{"pageNumber":"149","pageRowStart":"3700","pageSize":"25","recordCount":11371,"records":[{"id":70047600,"text":"sir20075289E - 2007 - Mapping known and potential mineral occurrences and host rocks in the Bonnifield Mining District using minimal cloud- and snow-cover ASTER data: Chapter E in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:12:20","indexId":"sir20075289E","displayToPublicDate":"2007-01-01T15:16:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"E","title":"Mapping known and potential mineral occurrences and host rocks in the Bonnifield Mining District using minimal cloud- and snow-cover ASTER data: Chapter E in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"On July 8, 2003, the Advanced Spaceborne Thermal \nEmission and Reflection Radiometer (ASTER) sensor \nacquired satellite imagery of a 60-kilometer-wide swath \ncovering a portion of the Bonnifield mining district within \nthe southernmost part of the Tintina Gold Province, Alaska, \nunder unusually favorable conditions of minimal cloud and \nsnow cover. Although rocks from more than eight different \nlithotectonic terranes are exposed within the extended swath of \ndata, we focus on volcanogenic massive sulfides (VMS) and \nporphyry deposits within the Yukon-Tanana terrane (YTT), \nthe largest Mesozoic accretionary terrane exposed between the \nDenali fault system to the south of Fairbanks and the Tintina \nfault system to the north of Fairbanks. \nComparison of thermal-infrared region (TIR) \ndecorrelation stretch data to available geologic maps indicates \nthat rocks from the YTT contain a wide range of rock types \nranging in composition from mafic metavolcanic rocks to \nfelsic rock types such as metarhyolites, pelitic schists, and \nquartzites. The nine-band ASTER visible-near-infrared \nregion--short-wave infrared region (VNIR-SWIR) reflectance \ndata and spectral matched-filter processing were used to map \nhydrothermal alteration patterns associated with VMS and \nporphyry deposit types. In particular, smectite, kaolinite, \nopaline silica, jarosite and (or) other ferric iron minerals \ndefined narrow (less than 250-meter diameter) zonal patterns \naround Red Mountain and other potential VMS targets. Using \nASTER we identified some of the known mineral deposits \nin the region, as well as mineralogically similar targets that \nmay represent potential undiscovered deposits. Some known \ndeposits were not identified and may have been obscured by \nvegetation or snow cover or were too small to be resolved.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289E","collaboration":"This report is Chapter E in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Hubbard, B.E., Dusel-Bacon, C., Rowan, L.C., and Eppinger, R.G., 2007, Mapping known and potential mineral occurrences and host rocks in the Bonnifield Mining District using minimal cloud- and snow-cover ASTER data: Chapter E in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 8 p., https://doi.org/10.3133/sir20075289E.","productDescription":"iii, 8 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276589,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289e.png"},{"id":276587,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-E.pdf"},{"id":276588,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520b822be4b0d6ca46067dd1","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509570,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509571,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Hubbard, Bernard E. 0000-0002-9315-2032 bhubbard@usgs.gov","orcid":"https://orcid.org/0000-0002-9315-2032","contributorId":2342,"corporation":false,"usgs":true,"family":"Hubbard","given":"Bernard","email":"bhubbard@usgs.gov","middleInitial":"E.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482486,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":482487,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rowan, Lawrence C.","contributorId":58629,"corporation":false,"usgs":true,"family":"Rowan","given":"Lawrence","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":482488,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Eppinger, Robert G. eppinger@usgs.gov","contributorId":849,"corporation":false,"usgs":true,"family":"Eppinger","given":"Robert","email":"eppinger@usgs.gov","middleInitial":"G.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482485,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120451,"text":"70120451 - 2007 - Submarine slope failures near Seward, Alaska, during the M9.2 1964 earthquake","interactions":[],"lastModifiedDate":"2023-11-09T16:34:55.41897","indexId":"70120451","displayToPublicDate":"2007-01-01T14:49:00","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Submarine slope failures near Seward, Alaska, during the M9.2 1964 earthquake","docAbstract":"<p>Following the 1964 M9.2 megathrust earthquake in southern Alaska, Seward was the only town hit by tsunamis generated from both submarine landslides and tectonic sources. Within 45 seconds of the start of the earthquake, a 1.2-km-long section of waterfront began sliding seaward, and soon after, ~6-8-m high waves inundated the town. Studies soon after the earthquake concluded that submarine landslides along the Seward waterfront generated the tsunamis that occurred immediately after the earthquake. We analyze pre- and post-earthquake bathymetry data to assess the location and extent of submarine mass failures and sediment transport. New NOAA multibeam bathymetry shows the morphology of the entire fjord at 15 m resolution. We also assembled all older soundings from smooth sheets for comparison to the multibeam dataset. We gridded the sounding data, applied corrections for coseismic subsidence, post-seismic rebound, unrecovered co-seismic subsidence, sea-level rise (vertical datum shift), and measurement errors. The difference grids show changes resulting from the 1964 earthquake. We estimate the total volume of slide material to be about 211 million m3. Most of this material was transported to a deep, flat area, which we refer to as &ldquo;the bathtub&rdquo;, about 6 to 13 km south of Seward. Sub-bottom profiling of the bathtub shows an acoustically transparent unit, which we interpret as a sediment flow deposit resulting from the submarine landslides. The scale of the submarine landslides and the distance over which sediment was transported is much larger than previously appreciated.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Submarine mass movements and their consequences","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Springer","doi":"10.1007/978-1-4020-6512-5_28","usgsCitation":"Haeussler, P.J., Lee, H., Ryan, H.F., Labay, K., Kayen, R.E., Hampton, M.A., and Suleimani, E., 2007, Submarine slope failures near Seward, Alaska, during the M9.2 1964 earthquake, chap. <i>of</i> Submarine mass movements and their consequences, v. 27, p. 269-278, https://doi.org/10.1007/978-1-4020-6512-5_28.","productDescription":"10 p.","startPage":"269","endPage":"278","numberOfPages":"10","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292219,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","city":"Seward","otherGeospatial":"Resurrection Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -149.50043577610558,\n              60.13841562583016\n            ],\n            [\n              -149.50043577610558,\n              59.9348510334695\n            ],\n            [\n              -149.27006326363548,\n              59.9348510334695\n            ],\n            [\n              -149.27006326363548,\n              60.13841562583016\n            ],\n            [\n              -149.50043577610558,\n              60.13841562583016\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"27","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53edcd52e4b0f61b386d2486","contributors":{"authors":[{"text":"Haeussler, Peter J. 0000-0002-1503-6247 pheuslr@usgs.gov","orcid":"https://orcid.org/0000-0002-1503-6247","contributorId":503,"corporation":false,"usgs":true,"family":"Haeussler","given":"Peter","email":"pheuslr@usgs.gov","middleInitial":"J.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":498252,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, H.J.","contributorId":96693,"corporation":false,"usgs":true,"family":"Lee","given":"H.J.","email":"","affiliations":[],"preferred":false,"id":498254,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryan, H. F.","contributorId":18002,"corporation":false,"usgs":true,"family":"Ryan","given":"H.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":498250,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Labay, Keith A. 0000-0002-6763-3190 klabay@usgs.gov","orcid":"https://orcid.org/0000-0002-6763-3190","contributorId":2097,"corporation":false,"usgs":true,"family":"Labay","given":"Keith A.","email":"klabay@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":false,"id":498251,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kayen, R. E.","contributorId":14424,"corporation":false,"usgs":true,"family":"Kayen","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":498249,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hampton, M. A.","contributorId":103271,"corporation":false,"usgs":true,"family":"Hampton","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":498255,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Suleimani, E.","contributorId":91713,"corporation":false,"usgs":true,"family":"Suleimani","given":"E.","affiliations":[],"preferred":false,"id":498253,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70047637,"text":"sir20075289J - 2007 - The biogeochemistry and occurrence of unusual plant species inhabiting acidic, metal-rich water, Red Mountain, Bonnifield district, Alaska Range: Chapter J in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:12:50","indexId":"sir20075289J","displayToPublicDate":"2007-01-01T14:44:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"J","title":"The biogeochemistry and occurrence of unusual plant species inhabiting acidic, metal-rich water, Red Mountain, Bonnifield district, Alaska Range: Chapter J in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"This report presents results on the occurrence and \nbiogeochemistry of unusual plant species, and of their \nsupporting sediment, in an undisturbed volcanogenic \nmassive sulfide deposit in the Tintina Gold Province (see \nfig. 1 of Editors’ Preface and Overview). The extraordinary \nplant assemblage found growing in the acidic metal-rich \nwaters that drain the area is composed predominantly of \nbryophytes (liverworts and mosses). Ferricrete-cemented \nsilty alluvial sediments within seeps and streams are covered \nwith the liverwort Gymnocolea inflata, whereas the mosses \nPolytrichum commune and P. juniperinum inhabit the area \nadjacent to the water and within the splash zone. Both the \nliverwort-encrusted sediment and Polytrichum thalli have high \nconcentrations of major- and trace-metal cations (for example, \nAl, As, Cu, Fe, Hg, La, Mn, Pb, and Zn). Soils in the area do \nnot reflect the geochemical signature of the mineral deposit, \nand we suspect that they are most influenced by the chemistry \nof airborne dust (aeolian material) derived from outside the \narea.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289J","collaboration":"This report is Chapter J in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Gough, L.P., Eppinger, R.G., and Briggs, P.H., 2007, The biogeochemistry and occurrence of unusual plant species inhabiting acidic, metal-rich water, Red Mountain, Bonnifield district, Alaska Range: Chapter J in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 6 p., https://doi.org/10.3133/sir20075289J.","productDescription":"iii, 6 p.","numberOfPages":"10","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276662,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289j.jpg"},{"id":276660,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276661,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-J.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df869e4b08494c3cb060c","contributors":{"authors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482605,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eppinger, Robert G. eppinger@usgs.gov","contributorId":849,"corporation":false,"usgs":true,"family":"Eppinger","given":"Robert","email":"eppinger@usgs.gov","middleInitial":"G.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482604,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Briggs, Paul H.","contributorId":30973,"corporation":false,"usgs":true,"family":"Briggs","given":"Paul","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":482606,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70047634,"text":"sir20075289I - 2007 - Environmental geochemical study of Red Mountain--an undisturbed volcanogenic massive sulfide deposit in the Bonnifield District, Alaska range, east-central Alaska: Chapter I in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:13:25","indexId":"sir20075289I","displayToPublicDate":"2007-01-01T14:28:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"I","title":"Environmental geochemical study of Red Mountain--an undisturbed volcanogenic massive sulfide deposit in the Bonnifield District, Alaska range, east-central Alaska: Chapter I in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"The Red Mountain volcanogenic massive sulfide (VMS) \ndeposit exhibits well-constrained examples of acid-generating, \nmetal-leaching, metal-precipitation, and self-mitigation (via \nco-precipitation, dilution, and neutralization) processes that \noccur in an undisturbed natural setting, a rare occurrence in \nNorth America. The unmined pyrite-rich deposit displays \na remarkable environmental footprint of natural acid \ngeneration, high metal concentrations, and exceedingly high \nrare-earth-element (REE) concentrations in surface waters. \nDissolution of pyrite and associated secondary reactions under \nnear-surface, oxidizing conditions are the primary causes for \nthe acid generation and metal leaching. The deposit is hosted \nin Devonian to Mississippian felsic metavolcanic rocks of the \nMystic Creek Member of the Totatlanika Schist.\nWater samples with the lowest pH values, highest \nspecific conductances, and highest major- and trace-element \nconcentrations are from springs and streams within the \nquartz-sericite-pyrite alteration zone. Aluminum, As, Cd, Co, \nCu, Fe, Mn, Ni, Pb, Y, and particularly Zn and the REEs are \nall found in high concentrations, ranging across four orders of \nmagnitude. Waters collected upstream from the alteration zone \nhave near-neutral pH values, lower specific conductances, \nlower metal concentrations, and measurable alkalinities. Water \nsamples collected downstream of the alteration zone have \npH values and metal concentrations intermediate between \nthese two extremes. Stream sediments are anomalous in \nZn, Pb, S, Fe, Cu, As, Co, Sb, and Cd relative to local and \nregional background abundances. Red Mountain Creek and its \ntributaries do not support, and probably never have supported, \nsignificant megascopic faunal aquatic life.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289I","collaboration":"This report is Chapter I in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Eppinger, R.G., Briggs, P.H., Dusel-Bacon, C., Giles, S.A., Gough, L.P., Hammarstrom, J.M., and Hubbard, B.E., 2007, Environmental geochemical study of Red Mountain--an undisturbed volcanogenic massive sulfide deposit in the Bonnifield District, Alaska range, east-central Alaska: Chapter I in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 9 p., https://doi.org/10.3133/sir20075289I.","productDescription":"iii, 9 p.","numberOfPages":"14","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276657,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276658,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-I.pdf"},{"id":276659,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289i.jpg"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df865e4b08494c3cb05d4","contributors":{"authors":[{"text":"Eppinger, Robert G. eppinger@usgs.gov","contributorId":849,"corporation":false,"usgs":true,"family":"Eppinger","given":"Robert","email":"eppinger@usgs.gov","middleInitial":"G.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Briggs, Paul H.","contributorId":30973,"corporation":false,"usgs":true,"family":"Briggs","given":"Paul","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":482599,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":482598,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giles, Stuart A. 0000-0002-8696-5078 sgiles@usgs.gov","orcid":"https://orcid.org/0000-0002-8696-5078","contributorId":1233,"corporation":false,"usgs":true,"family":"Giles","given":"Stuart","email":"sgiles@usgs.gov","middleInitial":"A.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482596,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482595,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hammarstrom, Jane M. 0000-0003-2742-3460 jhammars@usgs.gov","orcid":"https://orcid.org/0000-0003-2742-3460","contributorId":1226,"corporation":false,"usgs":true,"family":"Hammarstrom","given":"Jane","email":"jhammars@usgs.gov","middleInitial":"M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482594,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hubbard, Bernard E. 0000-0002-9315-2032 bhubbard@usgs.gov","orcid":"https://orcid.org/0000-0002-9315-2032","contributorId":2342,"corporation":false,"usgs":true,"family":"Hubbard","given":"Bernard","email":"bhubbard@usgs.gov","middleInitial":"E.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482597,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70047599,"text":"sir20075289D - 2007 - The Black Mountain tectonic zone--a reactivated northeast-trending crustal shear zone in the Yukon-Tanana Upland of east-central Alaska: Chapter D in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:14:03","indexId":"sir20075289D","displayToPublicDate":"2007-01-01T14:16:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"D","title":"The Black Mountain tectonic zone--a reactivated northeast-trending crustal shear zone in the Yukon-Tanana Upland of east-central Alaska: Chapter D in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"The Black Mountain tectonic zone in the YukonTanana terrane of east-central Alaska is a belt of diverse \nnortheast-trending geologic features that can been traced \nacross Black Mountain in the southeast corner of the Big Delta \n1&deg;×3&deg; degree quadrangle. Geologic mapping in the larger \nscale B1 quadrangle of the Big Delta quadrangle, in which \nBlack Mountain is the principal physiographic feature, has \nrevealed a continuous zone of normal and left-lateral strikeslip high-angle faults and shear zones, some of which have \nlate Tertiary to Quaternary displacement histories. The tectonic \nzone includes complexly intruded wall rocks and intermingled \napophyses of the contiguous mid-Cretaceous Goodpaster and \nMount Harper granodioritic plutons, mafic to intermediate \ncomposite dike swarms, precious metal mineralization, early \nTertiary volcanic activity and Quaternary fault scarps. These \nstructures define a zone as much as 6 to 13 kilometers (km) \nwide and more than 40 km long that can be traced diagonally across the B1 quadrangle into the adjacent Eagle 1&deg;×3&deg; \nquadrangle to the east. Recurrent activity along the tectonic \nzone, from at least mid-Cretaceous to Quaternary, suggests \nthe presence of a buried, fundamental tectonic feature beneath \nthe zone that has influenced the tectonic development of \nthis part of the Yukon-Tanana terrane. The tectonic zone, \ncentered on Black Mountain, lies directly above a profound \nnortheast-trending aeromagnetic anomaly between the Denali \nand Tintina fault systems. The anomaly separates moderate \nto strongly magnetic terrane on the northwest from a huge, \nweakly magnetic terrane on the southeast. The tectonic zone is \nparallel to the similarly oriented left-lateral, strike-slip Shaw \nCreek fault zone 85 km to the west.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289D","collaboration":"This report is Chapter D in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"O’Neill, J.M., Day, W.C., Alienikoff, J.N., and Saltus, R.W., 2007, The Black Mountain tectonic zone--a reactivated northeast-trending crustal shear zone in the Yukon-Tanana Upland of east-central Alaska: Chapter D in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 8 p., https://doi.org/10.3133/sir20075289D.","productDescription":"iii, 8 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276586,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289d.png"},{"id":276584,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276585,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-D.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520b822ce4b0d6ca46067de5","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509568,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509569,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"O’Neill, J. Michael jmoneill@usgs.gov","contributorId":99522,"corporation":false,"usgs":true,"family":"O’Neill","given":"J.","email":"jmoneill@usgs.gov","middleInitial":"Michael","affiliations":[],"preferred":false,"id":482484,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482482,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alienikoff, John N.","contributorId":85078,"corporation":false,"usgs":true,"family":"Alienikoff","given":"John","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":482483,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Saltus, Richard W. saltus@usgs.gov","contributorId":777,"corporation":false,"usgs":true,"family":"Saltus","given":"Richard","email":"saltus@usgs.gov","middleInitial":"W.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482481,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120691,"text":"70120691 - 2007 - Reassessment of seismically induced, tsunamigenic submarine slope failures in Port Valdez, Alaska, USA","interactions":[],"lastModifiedDate":"2023-11-08T17:25:21.664865","indexId":"70120691","displayToPublicDate":"2007-01-01T14:14:00","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Reassessment of seismically induced, tsunamigenic submarine slope failures in Port Valdez, Alaska, USA","docAbstract":"<p>The M9.2 Alaska earthquake of 1964 caused major damage to the port facilities and town of Valdez, most of it the result of submarine landslide and the consequent tsunamis. Recent bathymetric multibeam surveys, high-resolution subbottom profiles, and dated sediment cores in Port Valdez supply new information about the morphology and character of the landslide deposits. A comparison of pre- and post-earthquake bathymetry provides an estimate of the net volume of landslide debris deposited in the basin and the volume of sediment removed from the source region. Landslide features include (1) large blocks (up to 40-m high) near the location of the greatest tsunamiwave runup (~50 m), (2) two debris lobes associated with the blocks, (3) a series of gullies, channels and talus, near the fjord-head delta and badly damaged old town of Valdez, and (4) the front of a debris lobe that flowed half-way down the fjord from the east end.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Submarine mass movements and their consequences: 3rd international symposium (Advances in natural and technological hazards research volume 27)","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Springer","doi":"10.1007/978-1-4020-6512-5_37","usgsCitation":"Lee, H., Ryan, H.F., Haeussler, P.J., Kayen, R.E., Hampton, M.A., Locat, J., Suleimani, E., and Alexander, C.R., 2007, Reassessment of seismically induced, tsunamigenic submarine slope failures in Port Valdez, Alaska, USA, chap. <i>of</i> Submarine mass movements and their consequences: 3rd international symposium (Advances in natural and technological hazards research volume 27), v. 27, p. 357-365, https://doi.org/10.1007/978-1-4020-6512-5_37.","productDescription":"9 p.","startPage":"357","endPage":"365","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292319,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","city":"Valdez","otherGeospatial":"Port Valdez","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -146.17822335642776,\n              61.151338949545874\n            ],\n            [\n              -146.69724446768964,\n              61.151338949545874\n            ],\n            [\n              -146.69724446768964,\n              61.06874766783818\n            ],\n            [\n              -146.17822335642776,\n              61.06874766783818\n            ],\n            [\n              -146.17822335642776,\n              61.151338949545874\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"27","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ef1ed7e4b0bfa1f993eff7","contributors":{"editors":[{"text":"Lykousis, Vasilis","contributorId":190480,"corporation":false,"usgs":false,"family":"Lykousis","given":"Vasilis","email":"","affiliations":[],"preferred":false,"id":735938,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Sakellariou, Dimitris","contributorId":190483,"corporation":false,"usgs":false,"family":"Sakellariou","given":"Dimitris","email":"","affiliations":[],"preferred":false,"id":735939,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Locat, Jacques","contributorId":195011,"corporation":false,"usgs":false,"family":"Locat","given":"Jacques","email":"","affiliations":[],"preferred":false,"id":735940,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Lee, H.J.","contributorId":96693,"corporation":false,"usgs":true,"family":"Lee","given":"H.J.","email":"","affiliations":[],"preferred":false,"id":498397,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ryan, H. F.","contributorId":18002,"corporation":false,"usgs":true,"family":"Ryan","given":"H.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":498394,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haeussler, Peter J. 0000-0002-1503-6247 pheuslr@usgs.gov","orcid":"https://orcid.org/0000-0002-1503-6247","contributorId":503,"corporation":false,"usgs":true,"family":"Haeussler","given":"Peter","email":"pheuslr@usgs.gov","middleInitial":"J.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":498393,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kayen, R. E.","contributorId":14424,"corporation":false,"usgs":true,"family":"Kayen","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":498399,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hampton, M. A.","contributorId":103271,"corporation":false,"usgs":true,"family":"Hampton","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":498398,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Locat, Jacques","contributorId":101193,"corporation":false,"usgs":true,"family":"Locat","given":"Jacques","affiliations":[],"preferred":false,"id":498396,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Suleimani, E.","contributorId":91713,"corporation":false,"usgs":true,"family":"Suleimani","given":"E.","affiliations":[],"preferred":false,"id":498395,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Alexander, C. R.","contributorId":88855,"corporation":false,"usgs":false,"family":"Alexander","given":"C.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":735937,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70047597,"text":"sir20075289C - 2007 - Matching magnetic trends and patterns across the Tintina fault, Alaska and Canada--evidence for offset of about 490 kilometers: Chapter C in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:14:38","indexId":"sir20075289C","displayToPublicDate":"2007-01-01T13:50:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"C","title":"Matching magnetic trends and patterns across the Tintina fault, Alaska and Canada--evidence for offset of about 490 kilometers: Chapter C in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"Magnetic anomaly patterns on opposite sides of the \nmapped Tintina fault in eastern Alaska and western Canada \nshow an apparent offset of about 490 kilometers (km), \nprobably of Eocene age. This estimate is compared with \nprevious geologically based estimates of 400 to 430 km and \npaleomagnetically based estimates of more than 1,100 km. \nThe apparent geophysical alignments have geologic implications that deserve further study.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289C","collaboration":"This report is Chapter C in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Saltus, R.W., 2007, Matching magnetic trends and patterns across the Tintina fault, Alaska and Canada--evidence for offset of about 490 kilometers: Chapter C in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 7 p., https://doi.org/10.3133/sir20075289C.","productDescription":"iii, 7 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276583,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289c.png"},{"id":276581,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-C.pdf"},{"id":276582,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520b822ce4b0d6ca46067dd5","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509566,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509567,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Saltus, Richard W. saltus@usgs.gov","contributorId":777,"corporation":false,"usgs":true,"family":"Saltus","given":"Richard","email":"saltus@usgs.gov","middleInitial":"W.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482480,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70047632,"text":"sir20075289H - 2007 - Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:15:37","indexId":"sir20075289H","displayToPublicDate":"2007-01-01T13:30:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"H","title":"Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"The Pogo lode gold deposit was discovered in eastern \nAlaska in the early 1990s and provided the opportunity \nto study elemental distribution and mobility in the natural \nenvironment prior to mine development. Studying \nmineralized systems prior to mining allows us to compare \nthe natural biogeochemical signature in mineralized versus \nnonmineralized areas. The resultant data and interpretation \nalso provide a baseline for evaluating what, if any, changes in \nelemental distribution result from development. This report \ninvestigates the chemistry of stream water, streambed sediment, and soil in the context of regional bedrock geology. The \nmajor-ion chemistry of the waters reflects a rock-dominated \naqueous system, and the waters are classified as Ca<sup>2+</sup> and \nMg<sup>2+</sup> - HCO<sub>3</sub><sup>-</sup> to Ca<sup>2+</sup> and Mg<sup>2+</sup> - SO<sub>4</sub><sup>-2</sup> waters. Creeks draining \nthe gneissic lithologies tend to be more sulfate dominated \nthan those draining the intrusive units. Sulfate also dominated \ncreeks draining mineralized areas; however, the underlying \nparagneiss unit could be contributing substantially to the \nsulfate concentration, and the sulfate concentration in these \ncreeks may reflect a complex baltholith-paragneiss boundary rather than mineralization. Arsenic concentrations in \nbed sediments were elevated in mineralized areas relative \nto nonmineralized areas. Elevated concentrations of nickel, \nchromium, iron, manganese, and cobalt appear to reflect \nthe presence of ultramafic rocks in the drainage. In general, aqueous metal concentrations were below the State of \nAlaska’s Aquatic Life Criteria and Drinking Water Standards, \nwith the exception of arsenic in stream water, which ranged \nin concentration from less than 1 to 14 micrograms per liter \n(&mu;g/L) and exceeded the drinking water standard at one site. \nThe arsenic and antimony concentration in the A, B, and C \nsoil horizons ranged from 3 to 410 milligrams per kilogram \n(mg/kg), 6.1 to 440 mg/kg, and 2 to 300 mg/kg, respectively, for arsenic and 0.4 to 24 mg/kg, 0.6 to 25 mg/kg, and 0.2 to \n16 mg/kg, respectively, for antimony. The arsenic and antimony concentrations in stream waters correlate well with the \nconcentrations in soils. However, significantly less arsenic and \nantimony was extracted from C horizon soils in water leaching \nexperiments, indicating that the arsenic and antimony in the \nC horizon is present in a less available form than in the A or \nB horizons. Arsenic and antimony uptake by grayleaf willow \n(Salix glauca L.) appears minimal, with arsenic concentrations ranging from less than 0.01 to 0.14 mg/kg and antimony \nconcentrations ranging from less than 0.003 to 0.23 mg/kg \nin willow leaves. In general, the highest concentrations of \nboth arsenic and antimony in water and soils were found \nnear mineralized areas. Elevated arsenic concentrations were \nalso found in bed sediments from mineralized areas. In these \nsample matrices, the presence of arsenic and (or) antimony \nwas a good indicator of contact with mineralized rock units.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289H","collaboration":"This report is Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Wang, B., Gough, L.P., Wanty, R.B., Crock, J.G., Lee, G.K., Day, W.C., and Vohden, J., 2007, Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 8 p., https://doi.org/10.3133/sir20075289H.","productDescription":"iii, 8 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276648,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289h.jpg"},{"id":276646,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276647,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-H.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df867e4b08494c3cb05f1","contributors":{"authors":[{"text":"Wang, Bronwen 0000-0003-1044-2227 bwang@usgs.gov","orcid":"https://orcid.org/0000-0003-1044-2227","contributorId":2351,"corporation":false,"usgs":true,"family":"Wang","given":"Bronwen","email":"bwang@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":482591,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482589,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wanty, Richard B. 0000-0002-2063-6423 rwanty@usgs.gov","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":443,"corporation":false,"usgs":true,"family":"Wanty","given":"Richard","email":"rwanty@usgs.gov","middleInitial":"B.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482587,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Crock, James G. jcrock@usgs.gov","contributorId":200,"corporation":false,"usgs":true,"family":"Crock","given":"James","email":"jcrock@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":482586,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lee, Gregory K. glee@usgs.gov","contributorId":1220,"corporation":false,"usgs":true,"family":"Lee","given":"Gregory","email":"glee@usgs.gov","middleInitial":"K.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482588,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482590,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Vohden, Jim","contributorId":33350,"corporation":false,"usgs":true,"family":"Vohden","given":"Jim","email":"","affiliations":[],"preferred":false,"id":482592,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70047479,"text":"sir20075289A - 2007 - Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon","interactions":[{"subject":{"id":70047479,"text":"sir20075289A - 2007 - Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon","indexId":"sir20075289A","publicationYear":"2007","noYear":false,"chapter":"A","title":"Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon"},"predicate":"IS_PART_OF","object":{"id":98302,"text":"sir20075289 - 2010 - Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada-Results of a 5-Year Project","indexId":"sir20075289","publicationYear":"2010","noYear":false,"title":"Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada-Results of a 5-Year Project"},"id":1}],"isPartOf":{"id":98302,"text":"sir20075289 - 2010 - Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada-Results of a 5-Year Project","indexId":"sir20075289","publicationYear":"2010","noYear":false,"title":"Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada-Results of a 5-Year Project"},"lastModifiedDate":"2023-11-02T18:10:40.631344","indexId":"sir20075289A","displayToPublicDate":"2007-01-01T13:10:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"A","title":"Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon","docAbstract":"More than 50 million ounces of lode gold resources have \nbeen defined in the previous 15 years throughout accreted \nterranes of interior Alaska and in adjacent continental margin \nrocks of Yukon. The major deposits in this so-called Tintina \nGold Province formed around 105 to 90 million years ago in \neast-central Alaska and Yukon, and around 70 million years \nago in southwestern Alaska, late in the deformational history \nof their host rocks. All gold deposits studied to date formed \nfrom CO<sub>2</sub>\n-rich and <sup>18</sup>O-rich crustal fluids, most commonly of \nlow salinity. The older group of ores includes the low-grade \nintrusion-related gold systems at Fort Knox near Fairbanks \nand those in Yukon, with fluids exsolved from fractionating \nmelts at depths of 3 to 9 kilometers and forming a zoned \nsequence of auriferous mineralization styles extending \noutward to the surrounding metasedimentary country rocks. \nThe causative plutons are products of potassic mafic magmas generated in the subcontinental lithospheric mantle that \ninteracted with overlying lower to middle crust to generate \nthe more felsic ore-related intrusions. In addition, the older \nores include spatially associated, high-grade, shear-zonerelated orogenic gold deposits formed at the same depths from \nupward-migrating metamorphic fluids; the Pogo deposit is \na relatively deep-seated example of such. The younger gold \nores, restricted to southwestern Alaska, formed in unmetamorphosed sedimentary rocks of the Kuskokwim basin \nwithin 1 to 2 kilometers of the surface. Most of these deposits \nformed via fluid exsolution from shallowly emplaced, highly \nevolved igneous complexes generated mainly as mantle melts. \nHowever, the giant Donlin Creek orogenic gold deposit is a \nproduct of either metamorphic devolatilization deep in the \nbasin or of a gold-bearing fluid released from a flysch-melt \nigneous body.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada— Results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289A","usgsCitation":"Goldfarb, R.J., Marsh, E., Hart, C.J., Mair, J.L., Miller, M.L., and Johnson, C., 2007, Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 18 p., https://doi.org/10.3133/sir20075289A.","productDescription":"iii, 18 p.","numberOfPages":"22","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276165,"rank":3,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/sir20075289a.png"},{"id":276163,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276164,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-A.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":422348,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_92102.htm","linkFileType":{"id":5,"text":"html"}}],"country":"Canada, United States","state":"Alaska, Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5203a378e4b02bdb1bc63f9b","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509551,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509552,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Goldfarb, Richard J. goldfarb@usgs.gov","contributorId":1205,"corporation":false,"usgs":true,"family":"Goldfarb","given":"Richard","email":"goldfarb@usgs.gov","middleInitial":"J.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":482141,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Marsh, Erin E. 0000-0001-5245-9532","orcid":"https://orcid.org/0000-0001-5245-9532","contributorId":58765,"corporation":false,"usgs":true,"family":"Marsh","given":"Erin E.","affiliations":[],"preferred":false,"id":482143,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hart, Craig J. R.","contributorId":36811,"corporation":false,"usgs":false,"family":"Hart","given":"Craig","email":"","middleInitial":"J. R.","affiliations":[],"preferred":false,"id":482142,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mair, John L.","contributorId":61715,"corporation":false,"usgs":false,"family":"Mair","given":"John","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":482145,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Miller, Marti L. 0000-0003-0285-4942 mlmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-0285-4942","contributorId":561,"corporation":false,"usgs":true,"family":"Miller","given":"Marti","email":"mlmiller@usgs.gov","middleInitial":"L.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":482140,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johnson, Craig 0000-0002-1334-2996","orcid":"https://orcid.org/0000-0002-1334-2996","contributorId":59714,"corporation":false,"usgs":true,"family":"Johnson","given":"Craig","affiliations":[],"preferred":false,"id":482144,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70047630,"text":"sir20075289G - 2007 - Surface-water, ground-water, and sediment geochemistry of epizonal and shear-hosted mineral deposits in the Tintina Gold Province--arsenic and antimony distribution and mobility: Chapter G in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:16:32","indexId":"sir20075289G","displayToPublicDate":"2007-01-01T13:09:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"G","title":"Surface-water, ground-water, and sediment geochemistry of epizonal and shear-hosted mineral deposits in the Tintina Gold Province--arsenic and antimony distribution and mobility: Chapter G in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"Epigenetic mineral deposits in the Tintina Gold Province \nare generally characterized by high concentrations of arsenic \nand antimony in their mineral assemblage. A total of 347 samples (ground water, surface water, and stream sediment) were \ncollected to investigate the distribution and mobility of arsenic \nand antimony in the environment near known mineral deposits. Samples were collected from east to west at Keno Hill and \nBrewery Creek, Yukon, Canada; and Cleary Hill, True North, \nScrafford Mine, Fairbanks, Ryan Lode, Stampede Creek, \nSlate Creek, and Donlin Creek, all in Alaska. Surface- and \nground-water samples are all slightly acidic to near-neutral \nin pH (5-8), have a wide range in specific conductance \n(surface water 17-2,980 microsiemens per centimeter and \nground water 170-2,940 microsiemens per centimeter), and \nshow elevated dissolved arsenic and antimony concentrations \n(arsenic in surface water is less than 1 to 380 micrograms per \nliter and in ground water is less than 1 micrograms per liter to \n1.5 milligrams per liter; antimony in surface water is less than \n2 to 660 micrograms per liter and in ground water is less than \n2 to 60 micrograms per liter). Stream sediments downstream \nfrom these deposits have high concentrations of arsenic and \nantimony (arsenic median is 1,670 parts per million, maximum is 10,000 parts per million; antimony median is 192 \nparts per million, maximum is 7,200 parts per million). The \nmobility of arsenic and antimony is controlled by the local \nredox environment, with arsenic being less mobile in oxidized \nsurface waters relative to antimony, and arsenic more mobile \nin reduced ground water. These factors suggest that both antimony and arsenic may be useful pathfinder elements in water \nand sediment for targeting similar style deposits elsewhere in \nthe Tintina Gold Province.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289G","collaboration":"This report is Chapter G in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Mueller, S.H., Goldfarb, R.J., Verplanck, P.L., Trainor, T.P., Sanzolone, R.F., and Adams, M., 2007, Surface-water, ground-water, and sediment geochemistry of epizonal and shear-hosted mineral deposits in the Tintina Gold Province--arsenic and antimony distribution and mobility: Chapter G in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 9 p., https://doi.org/10.3133/sir20075289G.","productDescription":"iii, 9 p.","numberOfPages":"14","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276644,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289g.jpg"},{"id":276642,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276643,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-G.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df869e4b08494c3cb0605","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509574,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509575,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Mueller, Seth H.","contributorId":40306,"corporation":false,"usgs":true,"family":"Mueller","given":"Seth","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":482582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goldfarb, Richard J. goldfarb@usgs.gov","contributorId":1205,"corporation":false,"usgs":true,"family":"Goldfarb","given":"Richard","email":"goldfarb@usgs.gov","middleInitial":"J.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":482580,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Verplanck, Philip L. 0000-0002-3653-6419 plv@usgs.gov","orcid":"https://orcid.org/0000-0002-3653-6419","contributorId":728,"corporation":false,"usgs":true,"family":"Verplanck","given":"Philip","email":"plv@usgs.gov","middleInitial":"L.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482579,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Trainor, Thomas P.","contributorId":50072,"corporation":false,"usgs":true,"family":"Trainor","given":"Thomas","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":482583,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sanzolone, Richard F.","contributorId":88007,"corporation":false,"usgs":true,"family":"Sanzolone","given":"Richard","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":482584,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Adams, Monique madams@usgs.gov","contributorId":1231,"corporation":false,"usgs":true,"family":"Adams","given":"Monique","email":"madams@usgs.gov","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482581,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70047629,"text":"sir20075289F - 2007 - Aufeis accumulations in stream bottoms in arctic and subarctic environments as a possible indicator of geologic structure: Chapter F in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:17:12","indexId":"sir20075289F","displayToPublicDate":"2007-01-01T12:32:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"F","title":"Aufeis accumulations in stream bottoms in arctic and subarctic environments as a possible indicator of geologic structure: Chapter F in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"Thick accumulations of ice, called “aufeis,” form during \nwinter along stream and river valleys in arctic and subarctic \nregions. In high-gradient alpine streams, aufeis forms mostly \nas a result of ground-water discharge into the stream channel. \nThe ice occludes this discharge, perturbing the steady-state \ncondition, and causing an incremental rise in the local water \ntable until discharge occurs higher on the stream bank above \nthe previously formed ice. Successive freezing of onlapping \nice layers can lead to aufeis accumulations several meters \nthick.\nThe location and extent of aufeis in high-gradient streams \nmay be useful to relate local hydrology to geologic structure. \nIn the Goodpaster River basin study area, mineral deposits \nare known to occur, the location of which may be structurally \ncontrolled. Therefore, a more thorough understanding of \nregional geologic structures may facilitate a more detailed \nunderstanding of the genesis of the mineral deposits.\nExtensive aufeis was observed during visits to the \nGoodpaster River basin in east-central Alaska during 1999, \n2001, and 2002. Seeps from the sides of the valleys caused \nice to build up, giving the ice surface a concave-upward \nshape perpendicular to the stream direction. This concavity is \nevidence for ground-water discharge along the length of the \naufeis, as opposed to discharge from a single upstream point. \nDuring thaw, streamflow is commonly observed out of the \nnormal channel, evidence that occlusion of the channel (and \nshallow sediments) by ice is a viable mechanism for causing \nthe water table to rise.\nThe thickest (>3 meters) and most extensive aufeis \n(100’s of meters to kilometers along valleys) coincided with \nlocations of laterally extensive (>5 kilometers) mapped \nhigh-angle brittle fault zones, suggesting that the fault zones \nare hydraulically conductive. Additional evidence of water flow is provided by observed changes in stream-water chemistry in reaches in which aufeis forms, despite a lack of \nsurface tributaries. Minor or no aufeis was observed in many \nother drainage valleys where no laterally extensive structures \nhave been mapped, implying that aufeis formation results from \nmore than a topographic effect or discharge from bank storage. \nThus, the presence of thick, laterally extensive aufeis in highgradient streams may be a useful aid to geologic structural \nmapping in arctic and subarctic climates.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289F","collaboration":"This report is Chapter F in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Wanty, R.B., Wang, B., Vohden, J., Day, W.C., and Gough, L.P., 2007, Aufeis accumulations in stream bottoms in arctic and subarctic environments as a possible indicator of geologic structure: Chapter F in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 9 p., https://doi.org/10.3133/sir20075289F.","productDescription":"iii, 9 p.","numberOfPages":"14","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276641,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289f.jpg"},{"id":276639,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-F.pdf"},{"id":276640,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df863e4b08494c3cb05c2","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509572,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509573,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Wanty, Richard B. 0000-0002-2063-6423 rwanty@usgs.gov","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":443,"corporation":false,"usgs":true,"family":"Wanty","given":"Richard","email":"rwanty@usgs.gov","middleInitial":"B.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482574,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Bronwen 0000-0003-1044-2227 bwang@usgs.gov","orcid":"https://orcid.org/0000-0003-1044-2227","contributorId":2351,"corporation":false,"usgs":true,"family":"Wang","given":"Bronwen","email":"bwang@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":482577,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vohden, Jim","contributorId":33350,"corporation":false,"usgs":true,"family":"Vohden","given":"Jim","email":"","affiliations":[],"preferred":false,"id":482578,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482576,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482575,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70200684,"text":"70200684 - 2007 - Observatories, program in USA","interactions":[],"lastModifiedDate":"2018-10-29T11:29:12","indexId":"70200684","displayToPublicDate":"2007-01-01T11:29:05","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Observatories, program in USA","docAbstract":"<p><span>The Geomagnetism Program of the US Geological Survey has, for over a century now, monitored the Earth's magnetic field through a network of magnetic observatories and conducted scientific analysis on the data collected. The program traces its origins to the Reorganization Act of 1843, in which Congress authorized the creation of a coastal survey agency, as part of the Treasury Department, that was responsible for, among other things, geomagnetic surveys. The 19th century saw the establishment of relatively short‐lived magnetic stations, as well as the production of declination maps for the United States and territories. With the purchase of Alaska, coastal surveys became an increasingly higher priority, and in 1889 the Coast and Geodetic Survey, with a Division of Terrestrial Magnetism, was established. The first essentially permanent geomagnetic observatories were established under the Division's leadership of Dr.&nbsp;</span><i class=\"EmphasisTypeItalic \">Louis A. Bauer</i><span>&nbsp;and Dr. John A. Fleming: Cheltenham Maryland Observatory was established in 1900, subsequently moved to the Fredericksburg site in 1956; Sitka Alaska Observatory was established in 1901 and that of Honolulu Hawaii in 1902. Soon after these observatories became operational, it was found that the Sitka and Honolulu magnetometers were also sensitive to local earthquakes, and so seismometers were installed at the sites. In part, because of this colocation of instruments, the magnetic and seismological programs in the Coast and Geodetic Survey were united in 1925 under the Division of Geomagnetism and Seismology. Over the years, the Geomagnetism Program has evolved in response to the needs of the United States and in response to changes in the nation's various federal agencies. In 1903 the Coast and Geodetic Survey was transferred to the newly organized Department of Commerce, and in 1970 the survey became part of the National Oceanic and Atmospheric Administration (NOAA). In 1973, the US Geological Survey of the Department of the Interior assumed responsibility for the nation's Geomagnetism and Seismology programs.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Encyclopedia of geomagnetism and paleomagnetism","language":"English","publisher":"Springer","doi":"10.1007/978-1-4020-4423-6_231","usgsCitation":"Love, J.J., and Townshend, J., 2007, Observatories, program in USA, chap. <i>of</i> Encyclopedia of geomagnetism and paleomagnetism, https://doi.org/10.1007/978-1-4020-4423-6_231.","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":358882,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10da24e4b034bf6a7fc70f","contributors":{"authors":[{"text":"Love, Jeffrey J. 0000-0002-3324-0348 jlove@usgs.gov","orcid":"https://orcid.org/0000-0002-3324-0348","contributorId":760,"corporation":false,"usgs":true,"family":"Love","given":"Jeffrey","email":"jlove@usgs.gov","middleInitial":"J.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":750118,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Townshend, J.B.","contributorId":30623,"corporation":false,"usgs":true,"family":"Townshend","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":750119,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70047640,"text":"sir20075289K - 2007 - U.S. Geological Survey reports on the Tintina Gold Province--products of recent Mineral Resources Program studies: Chapter K in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:17:44","indexId":"sir20075289K","displayToPublicDate":"2007-01-01T08:50:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"K","title":"U.S. Geological Survey reports on the Tintina Gold Province--products of recent Mineral Resources Program studies: Chapter K in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289K","collaboration":"This report is Chapter K in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Gough, L.P., 2007, U.S. Geological Survey reports on the Tintina Gold Province--products of recent Mineral Resources Program studies: Chapter K in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, 4 p., https://doi.org/10.3133/sir20075289K.","productDescription":"4 p.","numberOfPages":"6","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276668,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289k.jpg"},{"id":276666,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276667,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-K.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520f49e9e4b0fc50304bc521","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509576,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509577,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482613,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70175701,"text":"70175701 - 2007 - Toward the next bedrock geology map of the circumpolar Arctic","interactions":[],"lastModifiedDate":"2017-06-07T16:52:41","indexId":"70175701","displayToPublicDate":"2007-01-01T04:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Toward the next bedrock geology map of the circumpolar Arctic","docAbstract":"<p>No abstract available.&nbsp;</p>","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"International Conference on Arctic Margins","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceDate":"2007","language":"English","usgsCitation":"Harrison, S., Bergmann, P., Gamble, B.M., Gordey, S.P., Jepson, H., Koren, T., Lopatin, B., Piepjohn, K., St-Onge, M.R., Shokalsky, S., Solli, K., Strelnikov, S., and Wilson, F.H., 2007, Toward the next bedrock geology map of the circumpolar Arctic, <i>in</i> International Conference on Arctic Margins, 2007.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":326810,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57b6dc71e4b03fd6b7d94ca1","contributors":{"authors":[{"text":"Harrison, S.","contributorId":16947,"corporation":false,"usgs":true,"family":"Harrison","given":"S.","affiliations":[],"preferred":false,"id":646112,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bergmann, P.J.","contributorId":76261,"corporation":false,"usgs":true,"family":"Bergmann","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":646113,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gamble, B. M.","contributorId":79485,"corporation":false,"usgs":true,"family":"Gamble","given":"B.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":646114,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gordey, Steven P.","contributorId":50042,"corporation":false,"usgs":true,"family":"Gordey","given":"Steven","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":646115,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jepson, H.","contributorId":173818,"corporation":false,"usgs":false,"family":"Jepson","given":"H.","email":"","affiliations":[],"preferred":false,"id":646116,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Koren, T.","contributorId":43608,"corporation":false,"usgs":true,"family":"Koren","given":"T.","email":"","affiliations":[],"preferred":false,"id":646117,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lopatin, B.G.","contributorId":173819,"corporation":false,"usgs":false,"family":"Lopatin","given":"B.G.","email":"","affiliations":[],"preferred":false,"id":646118,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Piepjohn, K.","contributorId":173820,"corporation":false,"usgs":false,"family":"Piepjohn","given":"K.","email":"","affiliations":[],"preferred":false,"id":646119,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"St-Onge, M. R.","contributorId":81368,"corporation":false,"usgs":true,"family":"St-Onge","given":"M.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":646120,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Shokalsky, S.P.","contributorId":173824,"corporation":false,"usgs":false,"family":"Shokalsky","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":646121,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Solli, K.","contributorId":26963,"corporation":false,"usgs":true,"family":"Solli","given":"K.","email":"","affiliations":[],"preferred":false,"id":646122,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Strelnikov, S.I.","contributorId":173825,"corporation":false,"usgs":false,"family":"Strelnikov","given":"S.I.","email":"","affiliations":[],"preferred":false,"id":646123,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":646124,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70030861,"text":"70030861 - 2007 - Environmental geochemistry at Red Mountain, an unmined volcanogenic massive sulphide deposit in the Bonnifield district, Alaska Range, east-central Alaska","interactions":[],"lastModifiedDate":"2019-12-19T09:53:27","indexId":"70030861","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1758,"text":"Geochemistry: Exploration, Environment, Analysis","active":true,"publicationSubtype":{"id":10}},"title":"Environmental geochemistry at Red Mountain, an unmined volcanogenic massive sulphide deposit in the Bonnifield district, Alaska Range, east-central Alaska","docAbstract":"<p>The unmined, pyrite-rich Red Mountain (Dry Creek) deposit displays a remarkable environmental footprint of natural acid generation, high metal and exceedingly high rare earth element (REE) concentrations in surface waters. The volcanogenic massive sulphide deposit exhibits well-constrained examples of acid-generating, metal-leaching, metal-precipitation and self-mitigation (via co-precipitation, dilution and neutralization) processes that occur in an undisturbed natural setting, a rare occurrence in North America. Oxidative dissolution of pyrite and associated secondary reactions under near-surface oxidizing conditions are the primary causes for the acid generation and metal leaching. The deposit is hosted in Devonian to Mississippian felsic metavolcanic rocks of the Mystic Creek Member of the Totatlanika Schist.</p><p>Water samples with the lowest pH (many below 3.5), highest specific conductance (commonly &gt;2500 μS/cm) and highest major- and trace-element concentrations are from springs and streams within the quartz–sericite–pyrite alteration zone. Aluminum, Cd, Co, Cu, Fe, Mn, Ni, Pb, Y, Zn and, particularly, the REEs are found in high concentrations, ranging across four orders of magnitude. Waters collected upstream from the alteration zone have near-neutral pH, lower specific conductance (370 to 830 μS/cm), lower metal concentrations and measurable alkalinities. Water samples collected downstream of the alteration zone have pH and metal concentrations intermediate between these two extremes. Stream sediments are anomalous in Zn, Pb, S, Fe, Cu, As, Co, Sb and Cd relative to local and regional background abundances. Red Mountain Creek and its tributaries do not, and probably never have, supported significant aquatic life.</p>","language":"English","publisher":"Geological Society of London","doi":"10.1144/1467-7873/07-136","issn":"14677873","usgsCitation":"Eppinger, R.G., Briggs, P., Dusel-Bacon, C., Giles, S.A., Gough, L.P., Hammarstrom, J.M., and Hubbard, B.E., 2007, Environmental geochemistry at Red Mountain, an unmined volcanogenic massive sulphide deposit in the Bonnifield district, Alaska Range, east-central Alaska: Geochemistry: Exploration, Environment, Analysis, v. 7, no. 3, p. 207-223, https://doi.org/10.1144/1467-7873/07-136.","productDescription":"17 p.","startPage":"207","endPage":"223","numberOfPages":"17","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"links":[{"id":238667,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Red Mountain","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -151.875,\n              63.39152174400882\n            ],\n            [\n              -146.1181640625,\n              63.39152174400882\n            ],\n            [\n              -146.1181640625,\n              65.45826097864811\n            ],\n            [\n              -151.875,\n              65.45826097864811\n            ],\n            [\n              -151.875,\n              63.39152174400882\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"7","issue":"3","noUsgsAuthors":false,"publicationDate":"2022-06-06","publicationStatus":"PW","scienceBaseUri":"505a09c5e4b0c8380cd5205f","contributors":{"authors":[{"text":"Eppinger, Robert G. eppinger@usgs.gov","contributorId":849,"corporation":false,"usgs":true,"family":"Eppinger","given":"Robert","email":"eppinger@usgs.gov","middleInitial":"G.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777756,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Briggs, Paul H.","contributorId":107691,"corporation":false,"usgs":true,"family":"Briggs","given":"Paul H.","affiliations":[],"preferred":false,"id":428987,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":777757,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giles, Stuart A. 0000-0002-8696-5078 sgiles@usgs.gov","orcid":"https://orcid.org/0000-0002-8696-5078","contributorId":1233,"corporation":false,"usgs":true,"family":"Giles","given":"Stuart","email":"sgiles@usgs.gov","middleInitial":"A.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777758,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":777759,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hammarstrom, Jane M. 0000-0003-2742-3460 jhammars@usgs.gov","orcid":"https://orcid.org/0000-0003-2742-3460","contributorId":1226,"corporation":false,"usgs":true,"family":"Hammarstrom","given":"Jane","email":"jhammars@usgs.gov","middleInitial":"M.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777760,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hubbard, Bernard E. 0000-0002-9315-2032 bhubbard@usgs.gov","orcid":"https://orcid.org/0000-0002-9315-2032","contributorId":2342,"corporation":false,"usgs":true,"family":"Hubbard","given":"Bernard","email":"bhubbard@usgs.gov","middleInitial":"E.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777761,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70035414,"text":"70035414 - 2007 - Metallogeny of the nikolai large igneous province (LIP) in southern alaska and its influence on the mineral potential of the talkeetna mountains","interactions":[],"lastModifiedDate":"2012-03-12T17:21:55","indexId":"70035414","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Metallogeny of the nikolai large igneous province (LIP) in southern alaska and its influence on the mineral potential of the talkeetna mountains","docAbstract":"Recent geologic mapping has identified areas of extrusive basalts of the Middle to Late Triassic Nikolai Greenstone within the Wrangellia terrane that extend at least 80 km southwest of their previously known extent. Abundant dolerite sills of similar composition intrude Paleozoic and Mesozoic stratigraphy below the Nikolai throughout the central Talkeetna Mountains. The Talkeetna Mountains, therefore, have newly identified potential for copper, nickel, and platinum-group elements (PGEs) as disseminated, net-textured, or massive magmatic sulfide deposits hosted in mafic and ultramafic sill-form complexes related to emplacement of the Nikolai. Because of their potential high grades, similar magmatic sulfide targets have been the focus of increasing mineral exploration activity over the last decade in the Amphitheater Mountains and central Alaska Range, 100-200 km to the northeast. The Nikolai Greenstone, associated intrusions, and their metamorphosed equivalents also have potential to host stratabound disseminated \"basaltic copper\" deposits. Sedimentary and metasedimentary rocks overlying the Nikolai have the potential to host stratabound, disseminated, or massive \"reduced-facies\" type Cu-Ag deposits. Ultramafic rocks have been identified only in the extreme northeastern Talkeetna Mountains to date. However, coincident gravity and magnetic highs along the leading (northwestern) edge of and within Wrangellia in the Talkeetna and Clearwater Mountains suggest several areas that are highly prospective for ultramafic rocks related to extrusion of Nikolai lavas. In particular, the distribution, geometry, and composition of sills within the pre-Nikolai stratigraphy and the structural and tectonic controls on intrusive versus extrusive rock distribution deserve serious examination. Copyright ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2007.2431(24)","issn":"00721077","usgsCitation":"Schmidt, J., and Rogers, R., 2007, Metallogeny of the nikolai large igneous province (LIP) in southern alaska and its influence on the mineral potential of the talkeetna mountains: Special Paper of the Geological Society of America, no. 431, p. 623-648, https://doi.org/10.1130/2007.2431(24).","startPage":"623","endPage":"648","numberOfPages":"26","costCenters":[],"links":[{"id":215347,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2431(24)"},{"id":243142,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a54f0e4b0c8380cd6d09e","contributors":{"authors":[{"text":"Schmidt, J.M.","contributorId":97916,"corporation":false,"usgs":true,"family":"Schmidt","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":450554,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rogers, R.K.","contributorId":93292,"corporation":false,"usgs":true,"family":"Rogers","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":450553,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035406,"text":"70035406 - 2007 - Origin of narrow terranes and adjacent major terranes occurring along the Denali fault in the Eastern and Central Alaska Range, Alaska","interactions":[],"lastModifiedDate":"2023-10-13T12:26:36.798963","indexId":"70035406","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Origin of narrow terranes and adjacent major terranes occurring along the Denali fault in the Eastern and Central Alaska Range, Alaska","docAbstract":"<div class=\"category-section content-section js-content-section\" data-statsid=\"4783916\"><p>Several narrow terranes occur along the Denali fault in the Eastern and Central Alaska Range in Southern Alaska. These terranes are the Aurora Peak, Cottonwood Creek, Maclaren, Pingston, and Windy terranes, and a terrane of ultramafic and associated rocks. Exterior to the narrow terranes to the south is the major Wrangellia island arc composite terrane, and to the north is the major Yukon-Tanana metamorphosed continental margin terrane. Overlying mainly the northern margin of the Wrangellia composite terrane are the Kahiltna overlap assemblage to the west, and the Gravina-Nutzotin-Gambier volcanic-plutonic-sedimentary belt to the east and southeast. The various narrow terranes are interpreted as the result of translation of fragments of larger terranes during two major tectonic events: (1) Late Jurassic to mid-Cretaceous accretion of the Wrangellia island arc composite terrane (or superterrane composed of the Wrangellia, Peninsular, and Alexander terranes) and associated subduction zone complexes; and (2) starting in about the Late Cretaceous, dextral transport of the Wrangellia composite terrane along the Denali fault. These two major tectonic events caused: (1) entrapment of a lens of oceanic lithosphere along the suture belt between the Wrangellia composite terrane and the North American Craton Margin and outboard accreted terranes to form the ultramafic and mafic part of the terrane of ultra-mafic and associated rocks, (2) subsequent dextral translation along the Denali fault of the terrane of ultramafic and associated rocks, (3) dextral translation along the Denali fault of the Aurora Peak, Cottonwood Creek, and Maclaren and continental margin arc terranes from part of the Coast plutonic-metamorphic complex (Coast-North Cascade plutonic belt) in the southwest Yukon Territory or Southeastern Alaska, (4) dextral translation along the Denali fault of the Pingston passive continental margin from a locus along the North American Continental Margin, and (5) formation and dextral transport along the Denali fault of the mélange of the Windy terrane from fragments of the Gravina-Nutzotin-Gambier volcanic-plutonic-sedimentary belt and from the North American Continental Margin.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/2007.2431(06)","issn":"00721077","usgsCitation":"Nokleberg, W., and Richter, D., 2007, Origin of narrow terranes and adjacent major terranes occurring along the Denali fault in the Eastern and Central Alaska Range, Alaska: Special Paper of the Geological Society of America, no. 431, p. 129-154, https://doi.org/10.1130/2007.2431(06).","productDescription":"26 p.","startPage":"129","endPage":"154","numberOfPages":"26","costCenters":[],"links":[{"id":243081,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a70e8e4b0c8380cd76325","contributors":{"authors":[{"text":"Nokleberg, W. J. 0000-0002-1574-8869","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":68312,"corporation":false,"usgs":true,"family":"Nokleberg","given":"W. J.","affiliations":[],"preferred":false,"id":450508,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Richter, D.H.","contributorId":43325,"corporation":false,"usgs":true,"family":"Richter","given":"D.H.","email":"","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":450507,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035203,"text":"70035203 - 2007 - Neogene transpressional foreland basin development on the north side of the central alaska range, usibelli group and nenana gravel, tanana basin","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035203","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Neogene transpressional foreland basin development on the north side of the central alaska range, usibelli group and nenana gravel, tanana basin","docAbstract":"Neogene strata of the Tanana basin provide a long-term record of a northwardpropagating, transpressional foreland-basin system related to regional shortening of the central Alaska Range and strike-slip displacement on the Denali fault system. These strata are ???2 km thick and have been deformed and exhumed in thrust faults that form the foothills on the north side of the Alaska Range. The lower part of the sedimentary package, the Usibelli Group, consists of 800 m of mainly Miocene strata that were deposited in fluvial, lacustrine, and peat bog environments of the foredeep depozone of the foreland-basin system. Compositional data from conglomerate and sandstone, as well as recycled Upper Cretaceous palynomorphs, indicate that the Miocene foreland-basin system was supplied increasing amounts of sediment from lithologies currently exposed in thrust sheets located south of the basin. The upper part of the sedimentary package, the Nenana Gravel, consists of 1200 m of mainly Pliocene strata that were deposited in alluvial-fan and braidplain environments in the wedge-top depozone of the foreland-basin system. Compositional data from conglomerate and sandstone, as well as <sup>40</sup>Ar/<sup>39</sup>Ar dating of detrital feldspars in sandstone and from granitic clasts in conglomerate, indicate that lithologies exposed in the central Alaska Range provided most of the detritus to the Pliocene foreland-basin system. 40Ar/39Ar dates from detrital feldspar grains also show that two main suites of plutons contributed sediment to the Nenana Gravel. Detrital feldspars with an average age of 56 Ma are interpreted to have been derived from the McKinley sequence of plutons located south of the Denali fault. Detrital feldspars with an average age of 34 Ma are interpreted to have been derived from plutons located north of the Denali fault. Plutons located south of the Denali fault provided detritus for the lower part of the Nenana Gravel, whereas plutons located north of the Denali fault began to contribute sediment during deposition of the upper part of the Nenana Gravel. This age distribution documented in detrital feldspars of the Nenana Gravel is interpreted as representing a progressive northward exhumation of plutons that were located south of the Pliocene Tanana basin. In contrast to previous studies, we interpret the Usibelli Group and Nenana Gravel to represent a continuum in the evolution of a transpressional foreland basin that began during Miocene time on the north side of the Alaska Range. Copyright ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2007.2431(20)","issn":"00721077","usgsCitation":"Ridgway, K., Thoms, E., Layer, P., Lesh, M., White, J.M., and Smith, S.V., 2007, Neogene transpressional foreland basin development on the north side of the central alaska range, usibelli group and nenana gravel, tanana basin: Special Paper of the Geological Society of America, no. 431, p. 507-547, https://doi.org/10.1130/2007.2431(20).","startPage":"507","endPage":"547","numberOfPages":"41","costCenters":[],"links":[{"id":215244,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2431(20)"},{"id":243034,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6454e4b0c8380cd7298c","contributors":{"authors":[{"text":"Ridgway, K.D.","contributorId":62792,"corporation":false,"usgs":true,"family":"Ridgway","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":449715,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thoms, E.E.","contributorId":88969,"corporation":false,"usgs":true,"family":"Thoms","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":449716,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Layer, P.W.","contributorId":42398,"corporation":false,"usgs":true,"family":"Layer","given":"P.W.","email":"","affiliations":[],"preferred":false,"id":449713,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lesh, M.E.","contributorId":53619,"corporation":false,"usgs":true,"family":"Lesh","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":449714,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"White, J. M.","contributorId":40268,"corporation":false,"usgs":true,"family":"White","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":449712,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smith, S. V.","contributorId":89284,"corporation":false,"usgs":true,"family":"Smith","given":"S.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":449717,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030863,"text":"70030863 - 2007 - Development of a murre (Uria spp.) egg control material","interactions":[],"lastModifiedDate":"2018-08-19T21:54:18","indexId":"70030863","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Development of a murre (Uria spp.) egg control material","docAbstract":"The Seabird Tissue Archival and Monitoring Project (STAMP) is a collaborative Alaska-wide effort by the US Fish and Wildlife Service's Alaska Maritime National Wildlife Refuge (USFWS/AMNWR), the US Geological Survey's Biological Resources Division (USGS/BRD), the Bureau of Indian Affairs Alaska Region Subsistence Branch (BIA/ARSB), and the National Institute of Standards and Technology (NIST) to monitor long-term (decadal) trends in environmental contaminants using seabird eggs. To support this effort, a matrix- (seabird egg) and concentration-specific control material was needed to ensure quality during analytical work. Although a herring gull egg quality assurance (HGQA) material is available from Environment Canada (EC), contaminant concentrations in this material tended to be higher than those observed in Alaskan murre (Uria spp.) eggs. Therefore, to prepare a more appropriate control material, a total of 12 common murre (U. aalge) and thick-billed murre (U. lomvia) eggs from four Bering Sea and Gulf of Alaska nesting locations were cryohomogenized to create 190 aliquots each containing approximately 6 g. This new control material was analyzed by different methods at NIST and EC facilities for the determination of concentrations and value assignment of 63 polychlorinated biphenyl (PCB) congeners, 20 organochlorine pesticides, and 11 polybrominated diphenyl ether (PBDE) congeners. The total PCB concentration is approximately 58 ng g -1 wet mass. Results obtained for analytes not listed on the certificates of analysis of the previously used control materials, HGQA and NIST's Standard Reference Material (SRM) 1946 Lake Superior Fish Tissue, are also presented. [Figure not available: see fulltext.]. ?? Springer-Verlag 2007.","largerWorkTitle":"Analytical and Bioanalytical Chemistry","language":"English","doi":"10.1007/s00216-006-0887-2","issn":"16182642","usgsCitation":"Vander Pol, S.S., Ellisor, M., Pugh, R.S., Becker, P., Poster, D., Schantz, M., Leigh, S., Wakeford, B., Roseneau, D.G., and Simac, K.S., 2007, Development of a murre (Uria spp.) egg control material, <i>in</i> Analytical and Bioanalytical Chemistry, v. 387, no. 7, p. 2357-2363, https://doi.org/10.1007/s00216-006-0887-2.","startPage":"2357","endPage":"2363","numberOfPages":"7","costCenters":[],"links":[{"id":238699,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211414,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00216-006-0887-2"}],"volume":"387","issue":"7","noUsgsAuthors":false,"publicationDate":"2006-11-14","publicationStatus":"PW","scienceBaseUri":"505a003ee4b0c8380cd4f674","contributors":{"authors":[{"text":"Vander Pol, Stacy S.","contributorId":38776,"corporation":false,"usgs":false,"family":"Vander Pol","given":"Stacy","email":"","middleInitial":"S.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428996,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ellisor, M.B.","contributorId":24166,"corporation":false,"usgs":true,"family":"Ellisor","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":428993,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pugh, Rebecca S.","contributorId":11826,"corporation":false,"usgs":false,"family":"Pugh","given":"Rebecca","email":"","middleInitial":"S.","affiliations":[{"id":25356,"text":"National Institute of Standards and Technology","active":true,"usgs":false}],"preferred":false,"id":428992,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Becker, P.R.","contributorId":101035,"corporation":false,"usgs":true,"family":"Becker","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":429000,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poster, D.L.","contributorId":10613,"corporation":false,"usgs":true,"family":"Poster","given":"D.L.","affiliations":[],"preferred":false,"id":428991,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schantz, M.M.","contributorId":83733,"corporation":false,"usgs":true,"family":"Schantz","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":428999,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Leigh, S.D.","contributorId":45510,"corporation":false,"usgs":true,"family":"Leigh","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":428997,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wakeford, B.J.","contributorId":35537,"corporation":false,"usgs":true,"family":"Wakeford","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":428995,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Roseneau, David G.","contributorId":73394,"corporation":false,"usgs":false,"family":"Roseneau","given":"David","email":"","middleInitial":"G.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":428998,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Simac, Kristin S. 0000-0002-4072-1940 ksimac@usgs.gov","orcid":"https://orcid.org/0000-0002-4072-1940","contributorId":131096,"corporation":false,"usgs":true,"family":"Simac","given":"Kristin","email":"ksimac@usgs.gov","middleInitial":"S.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":428994,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70035387,"text":"70035387 - 2007 - Detrital zircon geochronology of some neoproterozoic to triassic rocks in interior Alaska","interactions":[],"lastModifiedDate":"2023-10-13T12:23:41.724548","indexId":"70035387","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Detrital zircon geochronology of some neoproterozoic to triassic rocks in interior Alaska","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"Geolgical Society of America","doi":"10.1130/2007.2431(07)","usgsCitation":"Bradley, D.C., McClelland, W., Wooden, J.L., Till, A., Roeske, S.M., Miller, M.L., Karl, S.M., and Abbott, J., 2007, Detrital zircon geochronology of some neoproterozoic to triassic rocks in interior Alaska: Special Paper of the Geological Society of America, no. 431, p. 155-189, https://doi.org/10.1130/2007.2431(07).","productDescription":"35 p.","startPage":"155","endPage":"189","costCenters":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"links":[{"id":243337,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fffee4b0c8380cd4f50c","contributors":{"authors":[{"text":"Bradley, D. C.","contributorId":17634,"corporation":false,"usgs":true,"family":"Bradley","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":450411,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McClelland, W.C.","contributorId":66929,"corporation":false,"usgs":true,"family":"McClelland","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":450416,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":450415,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Till, A.B.","contributorId":37755,"corporation":false,"usgs":true,"family":"Till","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":450413,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Roeske, S. M.","contributorId":96865,"corporation":false,"usgs":false,"family":"Roeske","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":450418,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miller, Marti L. 0000-0003-0285-4942 mlmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-0285-4942","contributorId":561,"corporation":false,"usgs":true,"family":"Miller","given":"Marti","email":"mlmiller@usgs.gov","middleInitial":"L.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":450417,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Karl, Susan M. 0000-0003-1559-7826 skarl@usgs.gov","orcid":"https://orcid.org/0000-0003-1559-7826","contributorId":502,"corporation":false,"usgs":true,"family":"Karl","given":"Susan","email":"skarl@usgs.gov","middleInitial":"M.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":450412,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Abbott, J.G.","contributorId":47188,"corporation":false,"usgs":true,"family":"Abbott","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":450414,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70030915,"text":"70030915 - 2007 - Hazard assessment of the Tidal Inlet landslide and potential subsequent tsunami, Glacier Bay National Park, Alaska","interactions":[],"lastModifiedDate":"2023-07-26T12:08:19.693004","indexId":"70030915","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2604,"text":"Landslides","active":true,"publicationSubtype":{"id":10}},"title":"Hazard assessment of the Tidal Inlet landslide and potential subsequent tsunami, Glacier Bay National Park, Alaska","docAbstract":"<div id=\"Abs1-section\" class=\"c-article-section\"><div id=\"Abs1-content\" class=\"c-article-section__content\"><p>An unstable rock slump, estimated at 5 to 10 × 10<sup>6</sup>&nbsp;m<sup>3</sup>, lies perched above the northern shore of Tidal Inlet in Glacier Bay National Park, Alaska. This landslide mass has the potential to rapidly move into Tidal Inlet and generate large, long-period-impulse tsunami waves. Field and photographic examination revealed that the landslide moved between 1892 and 1919 after the retreat of the Little Ice Age glaciers from Tidal Inlet in 1890. Global positioning system measurements over a 2-year period show that the perched mass is presently moving at 3–4&nbsp;cm annually indicating the landslide remains unstable. Numerical simulations of landslide-generated waves suggest that in the western arm of Glacier Bay, wave amplitudes would be greatest near the mouth of Tidal Inlet and slightly decrease with water depth according to Green’s law. As a function of time, wave amplitude would be greatest within approximately 40&nbsp;min of the landslide entering water, with significant wave activity continuing for potentially several hours.</p></div></div>","language":"English","publisher":"Springer","doi":"10.1007/s10346-007-0084-1","issn":"1612510X","usgsCitation":"Wieczorek, G.F., Geist, E., Motyka, R., and Jakob, M., 2007, Hazard assessment of the Tidal Inlet landslide and potential subsequent tsunami, Glacier Bay National Park, Alaska: Landslides, v. 4, no. 3, p. 205-215, https://doi.org/10.1007/s10346-007-0084-1.","productDescription":"11 p.","startPage":"205","endPage":"215","numberOfPages":"11","costCenters":[],"links":[{"id":238964,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Glacier Bay National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -138.2661646509066,\n              60.084483896083896\n            ],\n            [\n              -138.2661646509066,\n              57.37268391158136\n            ],\n            [\n              -132.48983440780475,\n              57.37268391158136\n            ],\n            [\n              -132.48983440780475,\n              60.084483896083896\n            ],\n            [\n              -138.2661646509066,\n              60.084483896083896\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"4","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-05-08","publicationStatus":"PW","scienceBaseUri":"505a2fc4e4b0c8380cd5d080","contributors":{"authors":[{"text":"Wieczorek, G. F.","contributorId":50143,"corporation":false,"usgs":true,"family":"Wieczorek","given":"G.","middleInitial":"F.","affiliations":[],"preferred":false,"id":429213,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Geist, E.L. 0000-0003-0611-1150","orcid":"https://orcid.org/0000-0003-0611-1150","contributorId":71993,"corporation":false,"usgs":true,"family":"Geist","given":"E.L.","affiliations":[],"preferred":false,"id":429214,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Motyka, R.J.","contributorId":49594,"corporation":false,"usgs":true,"family":"Motyka","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":429212,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jakob, M.","contributorId":26513,"corporation":false,"usgs":true,"family":"Jakob","given":"M.","email":"","affiliations":[],"preferred":false,"id":429211,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030932,"text":"70030932 - 2007 - Genetic investigation of natural hybridization between rainbow and coastal cutthroat trout in the copper River Delta, Alaska","interactions":[],"lastModifiedDate":"2016-06-01T15:32:15","indexId":"70030932","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Genetic investigation of natural hybridization between rainbow and coastal cutthroat trout in the copper River Delta, Alaska","docAbstract":"<p><span>Molecular genetic methods were used to quantify natural hybridization between rainbow trout&nbsp;</span><i>Oncorhynchus mykiss</i><span>&nbsp;or steelhead (anadromous rainbow trout) and coastal cutthroat trout&nbsp;</span><i>O. clarkii clarkii</i><span>&nbsp;collected in the Copper River delta, Southeast Alaska. Eleven locations were sampled to determine the extent of hybridization and the distribution of hybrids. Four diagnostic nuclear microsatellite loci and four species-specific simple sequence repeat markers were used in combination with restriction fragment length polymorphism analyses of NADH dehydrogenase 5/6 (</span><i>ND5/6</i><span>) mitochondrial DNA (mtDNA) to investigate the genetic structure of trout from both species and identify putative interspecific hybrids. Hybrids were found in 7 of the 11 streams sampled in the Copper River delta, the extent of hybridization across all streams varying from 0% to 58%. Hybrid trout distribution appeared to be nonrandom, most individuals of mixed taxonomic ancestry being detected in streams containing rainbow trout rather than in streams containing coastal cutthroat trout. Genotypic disequilibrium was observed among microsatellite loci in populations with high levels of hybridization. We found no significant correlation between unique stream channel process groups and the number of hybrid fish sampled. Eighty-eight percent of fish identified as first-generation hybrids (F</span><sub>1</sub><span>) in two populations contained coastal cutthroat trout mtDNA, suggesting directionality in hybridization. However, dominance of coastal cutthroat trout mtDNA was not observed at a third location containing F</span><sub>1</sub><span>&nbsp;hybrids, indicating that interspecific mating behavior varied among locations. Backcrossed individuals were found in drainages lacking F</span><sub>1</sub><span>&nbsp;hybrids and in populations previously thought to contain a single species. The extent and distribution of backcrossed individuals suggested that at least some hybrids are reproductively viable and backcrossed hybrid offspring move throughout the system.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1577/T06-214.1","issn":"00028487","usgsCitation":"Williams, I., Reeves, G., Graziano, S., and Nielsen, J., 2007, Genetic investigation of natural hybridization between rainbow and coastal cutthroat trout in the copper River Delta, Alaska: Transactions of the American Fisheries Society, v. 136, no. 4, p. 926-942, https://doi.org/10.1577/T06-214.1.","productDescription":"17 p.","startPage":"926","endPage":"942","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":238703,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211418,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/T06-214.1"}],"volume":"136","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-01-09","publicationStatus":"PW","scienceBaseUri":"505a157ce4b0c8380cd54e36","contributors":{"authors":[{"text":"Williams, I.","contributorId":36343,"corporation":false,"usgs":true,"family":"Williams","given":"I.","email":"","affiliations":[],"preferred":false,"id":429274,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reeves, G.H.","contributorId":37287,"corporation":false,"usgs":true,"family":"Reeves","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":429275,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Graziano, S.L.","contributorId":56025,"corporation":false,"usgs":true,"family":"Graziano","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":429276,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nielsen, J.L.","contributorId":105665,"corporation":false,"usgs":true,"family":"Nielsen","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":429277,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70035256,"text":"70035256 - 2007 - Pre-, syn-, and postcollisional stratigraphic framework and provenance of upper triassic-upper cretaceous strata in the northwestern talkeetna mountains, alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:21:57","indexId":"70035256","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Pre-, syn-, and postcollisional stratigraphic framework and provenance of upper triassic-upper cretaceous strata in the northwestern talkeetna mountains, alaska","docAbstract":"Mesozoic strata of the northwestern Talkeetna Mountains are located in a regional suture zone between the allochthonous Wrangellia composite terrane and the former Mesozoic continental margin of North America (i.e., the Yukon-Tanana terrane). New geologic mapping, measured stratigraphic sections, and provenance data define a distinct three-part stratigraphy for these strata. The lowermost unit is greater than 290 m thick and consists of Upper Triassic-Lower Jurassic mafic lavas, fossiliferous limestone, and a volcaniclastic unit that collectively we informally refer to as the Honolulu Pass formation. The uppermost 75 m of the Honolulu Pass formation represent a condensed stratigraphic interval that records limited sedimentation over a period of up to ca. 25 m.y. during Early Jurassic time. The contact between the Honolulu Pass formation and the overlying Upper Jurassic-Lower Cretaceous clastic marine strata of the Kahiltna assemblage represents a ca. 20 m.y. depositional hiatus that spans the Middle Jurassic and part of Late Jurassic time. The Kahiltna assemblage may to be up to 3000 m thick and contains detrital zircons that have a robust U-Pb peak probability age of 119.2 Ma (i.e., minimum crystallization age/maximum depositional age). These data suggest that the upper age of the Kahiltna assemblage may be a minimum of 10-15 m.y. younger than the previously reported upper age of Valanginian. Sandstone composition (Q-43% F-30% L-27%-Lv-71% Lm-18% Ls-11%) and U-Pb detrital zircon ages suggest that the Kahiltna assemblage received igneous detritus mainly from the active Chisana arc, remnant Chitina and Talkeetna arcs, and Permian-Triassic plutons (Alexander terrane) of the Wrangellia composite terrane. Other sources of detritus for the Kahiltna assemblage were Upper Triassic-Lower Jurassic plutons of the Taylor Mountains batholith and Devonian-Mississippian plutons; both of these source areas are part of the Yukon-Tanana terrane. The Kahiltna assemblage is overlain by previously unrecognized nonmarine strata informally referred to here as the Caribou Pass formation. This unit is at least 250 m thick and has been tentatively assigned an Albian-Cenomanian-to-younger age based on limited palynomorphs and fossil leaves. Sandstone composition (Q-65% F-9% L-26%-Lv-28% Lm-52% Ls-20%) from this unit suggests a quartz-rich metamorphic source terrane that we interpret as having been the Yukon-Tanana terrane. Collectively, provenance data indicate that there was a fundamental shift from mainly arc-related sediment derivation from sources located south of the study area during Jurassic-Early Cretaceous (Aptian) time (Kahiltna assemblage) to mainly continental margin-derived sediment from sources located north and east of the study area by Albian-Cenomanian time (Caribou Pass formation). We interpret the threepart stratigraphy defined for the northwestern Talkeetna Mountains to represent pre- (the Honolulu Pass formation), syn- (the Kahiltna assemblage), and post- (the Caribou Pass formation) collision of the Wrangellia composite terrane with the Mesozoic continental margin. A similar Mesozoic stratigraphy appears to exist in other parts of south-central and southwestern Alaska along the suture zone based on previous regional mapping studies. New geologic mapping utilizing the three-part stratigraphy interprets the northwestern Talkeetna Mountains as consisting of two northwest-verging thrust sheets. Our structural interpretation is that of more localized thrust-fault imbrication of the three-part stratigraphy in contrast to previous interpretations of nappe emplacement or terrane translation that require large-scale displacements. Copyright ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2007.2431(16)","issn":"00721077","usgsCitation":"Hampton, B.A., Ridgway, K., O’Neill, J., Gehrels, G.E., Schmidt, J., and Blodgett, R.B., 2007, Pre-, syn-, and postcollisional stratigraphic framework and provenance of upper triassic-upper cretaceous strata in the northwestern talkeetna mountains, alaska: Special Paper of the Geological Society of America, no. 431, p. 401-438, https://doi.org/10.1130/2007.2431(16).","startPage":"401","endPage":"438","numberOfPages":"38","costCenters":[],"links":[{"id":215547,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2431(16)"},{"id":243359,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a80bee4b0c8380cd7b195","contributors":{"authors":[{"text":"Hampton, B. A.","contributorId":19798,"corporation":false,"usgs":false,"family":"Hampton","given":"B.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449925,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ridgway, K.D.","contributorId":62792,"corporation":false,"usgs":true,"family":"Ridgway","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":449927,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Neill, J.M.","contributorId":85562,"corporation":false,"usgs":true,"family":"O’Neill","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":449928,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gehrels, G. E.","contributorId":9660,"corporation":false,"usgs":true,"family":"Gehrels","given":"G.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":449924,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Schmidt, J.","contributorId":95713,"corporation":false,"usgs":true,"family":"Schmidt","given":"J.","affiliations":[],"preferred":false,"id":449929,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Blodgett, R. B.","contributorId":25176,"corporation":false,"usgs":true,"family":"Blodgett","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":449926,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70035386,"text":"70035386 - 2007 - The geophysical character of southern Alaska - Implications for crustal evolution","interactions":[],"lastModifiedDate":"2017-06-07T16:53:29","indexId":"70035386","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"The geophysical character of southern Alaska - Implications for crustal evolution","docAbstract":"<p><span>The southern Alaska continental margin has undergone a long and complicated history of plate convergence, subduction, accretion, and margin-parallel displacements. The crustal character of this continental margin is discernible through combined analysis of aeromagnetic and gravity data with key constraints from previous seismic interpretation. Regional magnetic data are particularly useful in defining broad geophysical domains. One of these domains, the south Alaska magnetic high, is the focus of this study. It is an intense and continuous magnetic high up to 200 km wide and &sim;1500 km long extending from the Canadian border in the Wrangell Mountains west and southwest through Cook Inlet to the Bering Sea shelf. Crustal thickness beneath the south Alaska magnetic high is commonly 40&ndash;50 km. Gravity analysis indicates that the south Alaska magnetic high crust is dense. The south Alaska magnetic high spatially coincides with the Peninsular and Wrangellia terranes. The thick, dense, and magnetic character of this domain requires significant amounts of mafic rocks at intermediate to deep crustal levels. In Wrangellia these mafic rocks are likely to have been emplaced during Middle and (or) Late Triassic Nikolai Greenstone volcanism. In the Peninsular terrane, the most extensive period of mafic magmatism now known was associated with the Early Jurassic Talkeetna Formation volcanic arc. Thus the thick, dense, and magnetic character of the south Alaska magnetic high crust apparently developed as the response to mafic magmatism in both extensional (Wrangellia) and subduction-related arc (Peninsular terrane) settings. The south Alaska magnetic high is therefore a composite crustal feature. At least in Wrangellia, the crust was probably of average thickness (30 km) or greater prior to Triassic mafic magmatism. Up to 20 km (40%) of its present thickness may be due to the addition of Triassic mafic magmas. Throughout the south Alaska magnetic high, significant crustal growth was caused by the addition of mafic magmas at intermediate to deep crustal levels.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/2007.2431(01)","issn":"00721077","usgsCitation":"Saltus, R.W., Hudson, T.L., and Wilson, F.H., 2007, The geophysical character of southern Alaska - Implications for crustal evolution: Special Paper of the Geological Society of America, v. 431, p. 1-20, https://doi.org/10.1130/2007.2431(01).","productDescription":"20 p.","startPage":"1","endPage":"20","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":243336,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215525,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2431(01)"}],"volume":"431","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bac81e4b08c986b32353d","contributors":{"authors":[{"text":"Saltus, R. W.","contributorId":85588,"corporation":false,"usgs":true,"family":"Saltus","given":"R.","middleInitial":"W.","affiliations":[],"preferred":false,"id":450410,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hudson, T. L.","contributorId":13992,"corporation":false,"usgs":true,"family":"Hudson","given":"T.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":450408,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":450409,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70035283,"text":"70035283 - 2007 - Early Tertiary transtension-related deformation and magmatism along the Tintina fault system, Alaska","interactions":[],"lastModifiedDate":"2016-06-02T14:02:08","indexId":"70035283","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Early Tertiary transtension-related deformation and magmatism along the Tintina fault system, Alaska","docAbstract":"<p>Transtensional deformation was concentrated in a zone adjacent to the Tintina strike-slip fault system in Alaska during the early Tertiary. The deformation occurred along the Victoria Creek fault, the trace of the Tintina system that connects it with the Kaltag fault; together the Tintina and Kaltag fault systems girdle Alaska from east to west. Over an area of ???25 by 70 km between the Victoria Creek and Tozitna faults, bimodal volcanics erupted; lacustrine and fluvial rocks were deposited; plutons were emplaced and deformed; and metamorphic rocks cooled, all at about the same time. Plutonic and volcanic rocks in this zone yield U-Pb zircon ages of ca. 60 Ma; <sup>40</sup>Ar/ <sup>39</sup>Ar cooling ages from those plutons and adjacent metamorphic rocks are also ca. 60 Ma. Although early Tertiary magmatism occurred over a broad area in central Alaska, meta- morphism and ductile deformation accompanied that magmatism in this one zone only. Within the zone of deformation, pluton aureoles and metamorphic rocks display consistent NE-SW-stretching lineations parallel to the Victoria Creek fault, suggesting that deformation processes involved subhorizontal elongation of the package. The most deeply buried metamorphic rocks, kyanite-bearing metapelites, occur as lenses adjacent to the fault, which cuts the crust to the Moho (Beaudoin et al., 1997). Geochronologic data and field relationships suggest that the amount of early Tertiary exhumation was greatest adjacent to the Victoria Creek fault. The early Tertiary crustal-scale events that may have operated to produce transtension in this area are (1) increased heat flux and related bimodal within-plate magmatism, (2) movement on a releasing stepover within the Tintina fault system or on a regional scale involving both the Tintina and the Kobuk fault systems, and (3) oroclinal bending of the Tintina-Kaltag fault system with counterclockwise rotation of western Alaska. ?? 2007 The Geological Society of America. All rights reserved.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/2007.2434(11)","issn":"00721077","usgsCitation":"Till, A., Roeske, S.M., Bradley, D.C., Friedman, R., and Layer, P., 2007, Early Tertiary transtension-related deformation and magmatism along the Tintina fault system, Alaska: Special Paper of the Geological Society of America, v. 434, p. 233-264, https://doi.org/10.1130/2007.2434(11).","productDescription":"32 p.","startPage":"233","endPage":"264","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":243268,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215460,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2007.2434(11)"}],"volume":"434","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a047fe4b0c8380cd50a05","contributors":{"authors":[{"text":"Till, A.B.","contributorId":37755,"corporation":false,"usgs":true,"family":"Till","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":450011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roeske, S. M.","contributorId":96865,"corporation":false,"usgs":false,"family":"Roeske","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":450013,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bradley, D. C.","contributorId":17634,"corporation":false,"usgs":true,"family":"Bradley","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":450009,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Friedman, R.","contributorId":22557,"corporation":false,"usgs":true,"family":"Friedman","given":"R.","affiliations":[],"preferred":false,"id":450010,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Layer, P.W.","contributorId":42398,"corporation":false,"usgs":true,"family":"Layer","given":"P.W.","email":"","affiliations":[],"preferred":false,"id":450012,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
]}