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On August 8, 2002, twenty-one scientists from the federal, private and academic sectors met at a workshop in Denver, Co., to discuss the feasibility of collecting magnetic anomaly data on a Canberra aircraft (Figure 1). The need for this 1-day workshop arose because of an exciting and cost-effective opportunity to collect invaluable magnetic anomaly data during a Canberra mission over the U.S. in 2003 and 2004. High Altitude Mapping Missions (HAMM) is currently planning a mission to collect Interferometric Synthetic Aperture Radar (IFSAR) imagery at an altitude of about 15 km and with a flight-line spacing of about 18 km over the conterminous U.S. and Alaska. The additional collection of total and vector magnetic field data would represent a secondary mission objective (i.e., a \"piggy-back\" magnetometer system). Because HAMM would fund the main flight costs of the mission, the geomagnetic community would obtain invaluable magnetic data at a nominal cost. These unique data would provide new insights on fundamental tectonic and thermal processes and give a new view of the structural and lithologic framework of the crust and possibly the upper mantle.

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This document highlights: (1) the reasons to conduct this national survey and (2) a preliminary operational plan to collect high-altitude magnetic data of a desired quality and for the expected resources. Although some operational plan issues remain to be resolved, the important conclusions of the workshop are that the Canberra is a very suitable platform to measure the magnetic field and that the planned mission will result in quality high-altitude magnetic data to greatly expand the utility of our national magnetic database.

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Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-450","title":"Reconnaissance shallow seismic investigation of depth-to-bedrock and possible methane-bearing coalbeds, Galena, Alaska","docAbstract":"A reconnaissance shallow seismic reflection/refraction investigation in and around the city of Galena, Alaska suggests that Tertiary and/or Cretaceous bedrock, and possible coalbeds within the Cretaceous, is at least as deep as 550 feet in the immediate vicinity of town. Rock could be deeper than 1000 feet under alternate interpretations. Reflections recorded in these data are believed to be from the sediment/bedrock interface. Analysis of these reflections and associated refractions indicates that this interface, interpreted at most of the six profile locations, has a high seismic velocity, possibly indicating non-sedimentary rock (e.g. volcanic or igneous).","language":"ENGLISH","doi":"10.3133/ofr02450","usgsCitation":"Stephenson, W.J., Williams, R., Odum, J.K., Worley, D.M., Barker, C., Clark, A.C., and Clough, J.G., 2002, Reconnaissance shallow seismic investigation of depth-to-bedrock and possible methane-bearing coalbeds, Galena, Alaska (Version 1.0): U.S. Geological Survey Open-File Report 2002-450, 36 p., illus. incl. sects., 2 tables, sketch map, 7 refs, https://doi.org/10.3133/ofr02450.","productDescription":"36 p., illus. incl. sects., 2 tables, sketch map, 7 refs","costCenters":[],"links":[{"id":176731,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":4372,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-450/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a62e4b07f02db6367c4","contributors":{"authors":[{"text":"Stephenson, William J. 0000-0001-8699-0786 wstephens@usgs.gov","orcid":"https://orcid.org/0000-0001-8699-0786","contributorId":695,"corporation":false,"usgs":true,"family":"Stephenson","given":"William","email":"wstephens@usgs.gov","middleInitial":"J.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":241832,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, Robert A. rawilliams@usgs.gov","contributorId":1357,"corporation":false,"usgs":true,"family":"Williams","given":"Robert A.","email":"rawilliams@usgs.gov","affiliations":[{"id":301,"text":"Geologic Hazards Team","active":false,"usgs":true}],"preferred":false,"id":241834,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Odum, Jack K. 0000-0002-3162-0355","orcid":"https://orcid.org/0000-0002-3162-0355","contributorId":97900,"corporation":false,"usgs":true,"family":"Odum","given":"Jack","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":241838,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Worley, David M. worley@usgs.gov","contributorId":947,"corporation":false,"usgs":true,"family":"Worley","given":"David","email":"worley@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":241833,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Barker, Charles E.","contributorId":93070,"corporation":false,"usgs":true,"family":"Barker","given":"Charles E.","affiliations":[],"preferred":false,"id":241837,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Clark, Arthur C. aclark@usgs.gov","contributorId":2320,"corporation":false,"usgs":true,"family":"Clark","given":"Arthur","email":"aclark@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":true,"id":241835,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Clough, James G.","contributorId":67152,"corporation":false,"usgs":false,"family":"Clough","given":"James","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":241836,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":50510,"text":"ofr02322 - 2002 - Isostatic gravity map of Yukon Flats, east-central Alaska","interactions":[],"lastModifiedDate":"2023-06-27T14:26:47.754092","indexId":"ofr02322","displayToPublicDate":"2002-11-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-322","title":"Isostatic gravity map of Yukon Flats, east-central Alaska","docAbstract":"The gravity data used to make this map were collected between 1959 and 1984. The data were collected by automobile, aircraft, and watercraft. Most of the data were collected as part of a U.S. Geological Survey (USGS) regional gravity data collection project. Some of the data were collected as part of other USGS local projects. One data set was collected by the NGS (National Geodetic Survey). This map ranges from 65° to 68° N latitude and 141° to 152° W longitude. The names of the 12 1:250,000-scale U.S. Geological Survey quadrangle maps that make up this map are labeled on the map. The western edge of the map is 1 degree of longitude east of the edge of the three most western quadrangles.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr02322","usgsCitation":"Morin, R.L., 2002, Isostatic gravity map of Yukon Flats, east-central Alaska: U.S. Geological Survey Open-File Report 2002-322, Map: 50.69 inches x 38.89 inches; Tables: 3 .Doc files; Metadata, https://doi.org/10.3133/ofr02322.","productDescription":"Map: 50.69 inches x 38.89 inches; Tables: 3 .Doc files; Metadata","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":176762,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr02322.jpg"},{"id":4321,"rank":7,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/0322/","linkFileType":{"id":5,"text":"html"}},{"id":283779,"rank":4,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2002/0322/table2.doc"},{"id":283780,"rank":3,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2002/0322/table1.doc"},{"id":283781,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2002/0322/table3.doc"},{"id":283777,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2002/0322/pdf/of02-322.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":283778,"rank":5,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2002/0322/metadata.txt","linkFileType":{"id":2,"text":"txt"}}],"country":"United States","state":"Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -152.00,66.00 ], [ -152.00,68.00 ], [ -141.00,68.00 ], [ -141.00,66.00 ], [ -152.00,66.00 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa7e4b07f02db66706f","contributors":{"authors":[{"text":"Morin, Robert L.","contributorId":82671,"corporation":false,"usgs":true,"family":"Morin","given":"Robert","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":241644,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":50516,"text":"ofr02342 - 2002 - Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 2000 through December 31, 2001","interactions":[],"lastModifiedDate":"2016-09-07T15:08:43","indexId":"ofr02342","displayToPublicDate":"2002-11-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-342","title":"Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 2000 through December 31, 2001","docAbstract":"

The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at potentially active volcanoes in Alaska since 1988 (Power and others, 1993; Jolly and others, 1996; Jolly and others, 2001). The primary objectives of this program are the seismic surveillance of active, potentially hazardous, Alaskan volcanoes and the investigation of seismic processes associated with active volcanism. This catalog reflects the status and evolution of the seismic monitoring program, and presents the basic seismic data for the time period January 1, 2000, through December 31, 2001. For an interpretation of these data and previously recorded data, the reader should refer to several recent articles on volcano related seismicity on Alaskan volcanoes in Appendix G.

The AVO seismic network was used to monitor twenty-three volcanoes in real time in 2000-2001. These include Mount Wrangell, Mount Spurr, Redoubt Volcano, Iliamna Volcano, Augustine Volcano, Katmai Volcanic Group (Snowy Mountain, Mount Griggs, Mount Katmai, Novarupta, Trident Volcano, Mount Mageik, Mount Martin), Aniakchak Crater, Pavlof Volcano, Mount Dutton, Isanotski Peaks, Shishaldin Volcano, Fisher Caldera, Westdahl Peak, Akutan Peak, Makushin Volcano, Great Sitkin Volcano, and Kanaga Volcano (Figure 1). AVO located 1551 and 1428 earthquakes in 2000 and 2001, respectively, on and around these volcanoes.

Highlights of the catalog period (Table 1) include: volcanogenic seismic swarms at Shishaldin Volcano between January and February 2000 and between May and June 2000; an eruption at Mount Cleveland between February and May 2001; episodes of possible tremor at Makushin Volcano starting March 2001 and continuing through 2001, and two earthquake swarms at Great Sitkin Volcano in 2001.

This catalog includes: (1) earthquake origin times, hypocenters, and magnitudes with summary statistics describing the earthquake location quality; (2) a description of instruments deployed in the field and their locations; (3) a description of earthquake detection, recording, analysis, and data archival systems; (4) station parameters and velocity models used for earthquake locations; (5) a summary of daily station usage throughout the catalog period; and (6) all HYPOELLIPSE files used to determine the earthquake locations presented in this report.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02342","usgsCitation":"Dixon, J.P., Stihler, S.D., Power, J.A., Tytgat, G., Estes, S., Moran, S.C., Paskievitch, J., and McNutt, S.R., 2002, Catalog of earthquake hypocenters at Alaskan volcanoes: January 1, 2000 through December 31, 2001: U.S. Geological Survey Open-File Report 2002-342, Report: PDF, 56 p.; Report: TXT; Appendix F; Data, https://doi.org/10.3133/ofr02342.","productDescription":"Report: PDF, 56 p.; Report: TXT; Appendix F; Data","numberOfPages":"56","additionalOnlineFiles":"Y","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":176638,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr02342.jpg"},{"id":283822,"type":{"id":2,"text":"Additional Report Piece"},"url":"https://pubs.usgs.gov/of/2002/0342/catalogavo.txt"},{"id":283821,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0342/pdf/of02-342.pdf","text":"Report","size":"5 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":283823,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2002/0342/pdf/appendixf.pdf","text":"Appendix F","size":"3.7 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Appendix F"},{"id":283824,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2002/0342/avocatalog2000_2001.tar.z.Z","text":"Data Files","size":"2.7 MB","description":"Data Files"},{"id":4328,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/0342/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,51.21 ], [ -180.0,67.0 ], [ -140.0,67.0 ], [ -140.0,51.21 ], [ -180.0,51.21 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f3e4b07f02db5ef8a2","contributors":{"authors":[{"text":"Dixon, James P. 0000-0002-8478-9971 jpdixon@usgs.gov","orcid":"https://orcid.org/0000-0002-8478-9971","contributorId":3163,"corporation":false,"usgs":true,"family":"Dixon","given":"James","email":"jpdixon@usgs.gov","middleInitial":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":241658,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stihler, Scott D.","contributorId":31373,"corporation":false,"usgs":true,"family":"Stihler","given":"Scott","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":241659,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Power, John A. 0000-0002-7233-4398 jpower@usgs.gov","orcid":"https://orcid.org/0000-0002-7233-4398","contributorId":2768,"corporation":false,"usgs":true,"family":"Power","given":"John","email":"jpower@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":241657,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tytgat, Guy","contributorId":71152,"corporation":false,"usgs":true,"family":"Tytgat","given":"Guy","email":"","affiliations":[],"preferred":false,"id":241662,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Estes, Steve","contributorId":55881,"corporation":false,"usgs":true,"family":"Estes","given":"Steve","email":"","affiliations":[],"preferred":false,"id":241661,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Moran, Seth C. 0000-0001-7308-9649 smoran@usgs.gov","orcid":"https://orcid.org/0000-0001-7308-9649","contributorId":548,"corporation":false,"usgs":true,"family":"Moran","given":"Seth","email":"smoran@usgs.gov","middleInitial":"C.","affiliations":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":241656,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Paskievitch, John","contributorId":74050,"corporation":false,"usgs":true,"family":"Paskievitch","given":"John","affiliations":[],"preferred":false,"id":241663,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McNutt, Stephen R.","contributorId":38133,"corporation":false,"usgs":true,"family":"McNutt","given":"Stephen","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":241660,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":50535,"text":"ofr02391 - 2002 - Multibeam bathymetry and selected perspective views of main part of Glacier Bay, Alaska","interactions":[],"lastModifiedDate":"2014-03-12T13:16:02","indexId":"ofr02391","displayToPublicDate":"2002-11-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-391","title":"Multibeam bathymetry and selected perspective views of main part of Glacier Bay, Alaska","docAbstract":"Glacier Bay is a diverse fjord ecosystem with multiple tidewater glaciers and complex biological, geological, and oceanographic patterns that vary greatly along its length. The bay was completely glaciated prior to the 1700's, and subsequently experienced the fastest glacial retreat recorded in historical times. As a result, some of the highest rates of glacial sedimentation and uplift are observed here.\n\nGlacier Bay is the deepest silled fjord in Alaska, with depths of over 450 meters. The variety of physical processes and depths creates many diverse habitats within a relatively small area. Mapping benthic (seafloor) habitats is thus crucial to understanding and managing Glacier Bay's complex marine ecosystem and the marine species therein. High-resolution multibeam mapping of the bay, funded jointly by USGS and the National Park System, provides an unprecedented new baseline for resource and habitat assessment. Full integration of the new data set will require additional ground-truthing data (sampling) and analysis. The USGS goal is to develop integrated geological and oceanographic habitat models for the marine benthos in Glacier Bay, as a step toward determining the habitat relationships of critical species and resources within the Park.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr02391","usgsCitation":"Carlson, P.R., Hooge, P., Cochrane, G., Stevenson, A., Dartnell, P., and Lee, K., 2002, Multibeam bathymetry and selected perspective views of main part of Glacier Bay, Alaska: U.S. Geological Survey Open-File Report 2002-391, HTML page, https://doi.org/10.3133/ofr02391.","productDescription":"HTML page","additionalOnlineFiles":"Y","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":4347,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/0391/","linkFileType":{"id":5,"text":"html"}},{"id":178427,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr02391.jpg"},{"id":283892,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0391/intro.html"}],"country":"United States","state":"Alaska","otherGeospatial":"Glacier Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -137.0187,58.3049 ], [ -137.0187,59.0615 ], [ -135.3983,59.0615 ], [ -135.3983,58.3049 ], [ -137.0187,58.3049 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b485c","contributors":{"authors":[{"text":"Carlson, Paul R.","contributorId":81469,"corporation":false,"usgs":true,"family":"Carlson","given":"Paul","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":241727,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hooge, Philip","contributorId":51644,"corporation":false,"usgs":true,"family":"Hooge","given":"Philip","affiliations":[],"preferred":false,"id":241725,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cochrane, Guy","contributorId":104164,"corporation":false,"usgs":true,"family":"Cochrane","given":"Guy","affiliations":[],"preferred":false,"id":241729,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stevenson, Andrew","contributorId":102787,"corporation":false,"usgs":true,"family":"Stevenson","given":"Andrew","affiliations":[],"preferred":false,"id":241728,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dartnell, Pete","contributorId":33412,"corporation":false,"usgs":true,"family":"Dartnell","given":"Pete","email":"","affiliations":[],"preferred":false,"id":241724,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, Kristen","contributorId":78809,"corporation":false,"usgs":true,"family":"Lee","given":"Kristen","affiliations":[],"preferred":false,"id":241726,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70180946,"text":"70180946 - 2002 - Depositional sequences and facies in the Torok Formation, National Petroleum Reserve, Alaska (NPRA)","interactions":[],"lastModifiedDate":"2017-02-09T11:24:38","indexId":"70180946","displayToPublicDate":"2002-10-31T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Depositional sequences and facies in the Torok Formation, National Petroleum Reserve, Alaska (NPRA)","docAbstract":"

Brookian turbidites (Cretaceous through Tertiary) have become oil exploration objectives on the NorthSlope of Alaska during the past decade, and it is likely this focus will extend into the National Petroleum Reserve-Alaska (NPRA). A regional grid of 2-D seismic data, sparse well control, and field work in the Brooks Range foothills provide constraints for an ongoing effort to establish a sequence stratigraphic framework for Brookian turbidites in the Torok Formation across NPRA. The Torok Formation and overlying Nanushuk Formation (both mostly Albian) display the overall seismic geometry of bottomset-clinoform-topset strata indicating northeastward migration of a shelf margin. Within bottomset and clinoform strata of the Torok, depositional sequences have been identified that represent four distinct phases of shelf-margin sedimentation. (1) Regression, representing low relative sea level, is characterized by the development of an erosional surface on the shelf and upper slope, and the deposition of turbidite channel deposits on the middle to lower slope and submarine fan deposits at the base of slope. These deposits constitute a lowstand systems tract (LST). (2) Transgression, representing rising relative sea level, is characterized by the deposition of a mudstone drape on the basin floor, slope, and outer shelf. This drape comprises relatively condensed facies that constitute a transgressive systems tract (TST). (3) Aggradation, representing high relative sea level, is characterized by the deposition of relatively thick strata on the outer shelf and moderately thick mudstones on the slope. (4) Progradation, also representing high relative sea level, is characterized by the deposition of relatively thin strata on the outer shelf and very thick mudstones on the slope. Together, deposits of the aggradation and progradation phases constitute a highstand systems tract (HST). Large scale geometries of Torok strata vary across the Colville basin. In southern NPRA, high rates of subsidence accommodated the deposition of a \"foredeep clinoform wedge\" that contains a high proportion of sand-rich LST deposits. In northern NPRA, lower rates of subsidence favored the accumulation of mud-rich HST deposits. The most favorable stratigraphic trapping geometries in the Torok Formation occur where amalgamated sandstones deposited in turbidite channels incised on the mid- to lower-slope and on the proximal parts of submarine fans during regression (LSTs) are capped by relatively condensed mudstone facies deposited during transgression (TSTs). Common successions observed in Torok cores include a spectrum of slope and turbidite facies. Upper slope facies comprise laminated mudstones and siltstones that locally display evidence of slumping, sliding, and chaotic failure. Lower slope facies comprise heterolithic turbidites at some locations and interlaminated mudstones and thin, very fine-grained sandstones at others. Torok turbidites include amalgamated sandstones deposited in channel systems as well as thin-bedded, widespread sandstones deposited by unconfined flows on lobes or in channel overbank settings. These turbidite facies likely occur in both channel-lobe systems and slope apron systems within the Torok.

","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"SEPM core workshop","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"language":"English","publisher":"American Geosciences Institute ","issn":"0278-0720 ","usgsCitation":"Houseknecht, D.W., and Schenk, C.J., 2002, Depositional sequences and facies in the Torok Formation, National Petroleum Reserve, Alaska (NPRA), in SEPM core workshop, v. 21, p. 5-26.","productDescription":"12 p.","startPage":"5","endPage":"26","costCenters":[],"links":[{"id":335084,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","volume":"21","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"589d8dd7e4b0efcedb7ae5db","contributors":{"authors":[{"text":"Houseknecht, David W. 0000-0002-9633-6910 dhouse@usgs.gov","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":645,"corporation":false,"usgs":true,"family":"Houseknecht","given":"David","email":"dhouse@usgs.gov","middleInitial":"W.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":662932,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schenk, Christopher J. 0000-0002-0248-7305 schenk@usgs.gov","orcid":"https://orcid.org/0000-0002-0248-7305","contributorId":826,"corporation":false,"usgs":true,"family":"Schenk","given":"Christopher","email":"schenk@usgs.gov","middleInitial":"J.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":662933,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":39940,"text":"wri024163 - 2002 - Priority-pollutant trace elements in streambed sediments of the Cook Inlet basin, Alaska, 1998-2000","interactions":[],"lastModifiedDate":"2012-02-02T00:09:59","indexId":"wri024163","displayToPublicDate":"2002-10-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2002-4163","title":"Priority-pollutant trace elements in streambed sediments of the Cook Inlet basin, Alaska, 1998-2000","docAbstract":"Trace element concentrations in 48 streambed sediment samples collected at 47 sites in the Cook Inlet Basin, Alaska, were compared to concentrations from studies in the conterminous United States using identical methods and to Probable Effect Concentrations. Concentrations of arsenic, chromium, mercury, and nickel in the 0.063-mm size fraction of streambed sediments from the Cook Inlet Basin were elevated relative to reference sites in the conterminous United States. Concentrations of cadmium, lead, and zinc were highest at the most urbanized site in Anchorage and at two sites downstream from an ore body in Lake Clark National Park and Preserve. At least 35 percent of the 48 samples collected in the Cook Inlet Basin exceeded the Probable Effect Concentration for arsenic, chromium, or nickel. More than 50 percent of the samples were considered to have low potential toxicity for cadmium, lead, mercury, nickel, selenium, and zinc. A Probable Effect Concentration quotient that reflects the combined toxicity of arsenic, cadmium, chromium, copper, lead, mercury, nickel, and zinc was exceeded in 44 percent of the samples from the Cook Inlet Basin. The potential toxicity was high in the Denali and Lake Clark National Parks and Preserves where organic carbon concentrations in streambed sediments were low. However, potential toxicity results should be considered in context with the very small amounts of fine-grained sediment present in the streambed sediments of the Cook Inlet Basin.","language":"ENGLISH","doi":"10.3133/wri024163","usgsCitation":"Frenzel, S.A., 2002, Priority-pollutant trace elements in streambed sediments of the Cook Inlet basin, Alaska, 1998-2000: U.S. Geological Survey Water-Resources Investigations Report 2002-4163, 12 p.; 3 illus.; 4 tables, https://doi.org/10.3133/wri024163.","productDescription":"12 p.; 3 illus.; 4 tables","costCenters":[],"links":[{"id":3638,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri024163/","linkFileType":{"id":5,"text":"html"}},{"id":164935,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9fe4b07f02db660ef0","contributors":{"authors":[{"text":"Frenzel, Steven A. sfrenzel@usgs.gov","contributorId":688,"corporation":false,"usgs":true,"family":"Frenzel","given":"Steven","email":"sfrenzel@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":222655,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":39996,"text":"ofr2002198 - 2002 - Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178","interactions":[{"subject":{"id":21710,"text":"ofr9696 - 1996 - Data base for a national mineral-resource assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the conterminous United States","indexId":"ofr9696","publicationYear":"1996","noYear":false,"displayTitle":"Data Base for a National Mineral-Resource Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the Conterminous United States","title":"Data base for a national mineral-resource assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the conterminous United States"},"predicate":"SUPERSEDED_BY","object":{"id":39996,"text":"ofr2002198 - 2002 - Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178","indexId":"ofr2002198","publicationYear":"2002","noYear":false,"title":"Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178"},"id":1},{"subject":{"id":30775,"text":"cir1178 - 2000 - 1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States","indexId":"cir1178","publicationYear":"2000","noYear":false,"title":"1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States"},"predicate":"SUPERSEDED_BY","object":{"id":39996,"text":"ofr2002198 - 2002 - Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178","indexId":"ofr2002198","publicationYear":"2002","noYear":false,"title":"Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178"},"id":2}],"lastModifiedDate":"2022-06-09T18:23:00.116454","indexId":"ofr2002198","displayToPublicDate":"2002-10-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-198","displayTitle":"Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States: A Portable Document (PDF) Recompilation of USGS Open-File Report 96-96 and Circular 1178","title":"Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178","docAbstract":"This publication contains the results of a national mineral resource assessment study. The study (1) identifies regional tracts of ground believed to contain most of the nation's undiscovered resources of gold, silver, copper, lead, and zinc in conventional types of deposits; and (2) includes probabilistic estimates of the amounts of these undiscovered resources in most of the tracts. It also contains a table of the significant known deposits in the tracts, and includes descriptions of the mineral deposit models used for the assessment. \r\n\r\nThe assessment was previously released in two major publications. The conterminous United States assessment was published in 1996 as USGS Open-File Report 96-96. Subsequently, the Alaska assessment was combined with the conterminous assessment in 1998 and released as USGS Circular 1178. \r\n\r\nThis new recompilation was undertaken for several reasons. First, the graphical browser software used in Circular 1178 was ONLY compatible with the Microsoft Windows operating system. It was incompatible with the Macintosh operating system, Linux, and other types of Unix computers. Second, the browser on Circular 1178 is much less intuitive to operate, requiring most users to follow a tutorial to understand how to navigate the information on the CD. Third, this release corrects several errors and numbering inconsistencies in Circular 1178.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr2002198","usgsCitation":"The U.S. Geological Survey National Mineral Resource Assessment Team, 2002, Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178 (Supersedes OFR 96-96 & CIR 1178): U.S. Geological Survey Open-File Report 2002-198, HTML Document, https://doi.org/10.3133/ofr2002198.","productDescription":"HTML Document","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":165694,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":402013,"rank":3,"type":{"id":36,"text":"NGMDB Index 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Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2002-4127","title":"Water quality of the Tlikakila River and five major tributaries to Lake Clark, Lake Clark National Park and Preserve, Alaska, 1999-2001","docAbstract":"The Tlikakila River Basin, located in Lake Clark National Park and Preserve, drains an area of 622 square miles. This watershed comprises about 21 percent of the Lake Clark Basin, making it one of the major tributaries to Lake Clark. Due to a sharp decline in sockeye salmon population and the lack of hydrologic data, the Tlikakila River and five other major tributaries to Lake Clark were studied during the summer runoff months (May through September) from 1999 through 2001 as part of a cooperative study with the National Park Service.\r\n\r\nMeasurements of pH and dissolved oxygen concentrations of the Tlikakila River are within acceptable limits for fish survival. Water temperatures at the measurement site reach 0 ?C during the winter and this part of the Tlikakila River may not be suitable for fish. Water temperatures are within acceptable limits for fish during the summer months. The Tlikakila River is a calcium bicarbonate type water with a low buffering capacity. Concentrations of un-ionized ammonia are well below the recommended value of 0.02 mg/L for fish propagation. Annual transport of suspended sediment by the Tlikakila River into Lake Clark ranged from 0.4 to 1.5 million tons during 1999?2001. The fine sediment from the Tlikakila River disperses through the lake over the summer, affecting light transmissivity.\r\n\r\nMost runoff from the Tlikakila River occurs from mid-to-late May through September. Average discharge for these months during 1999?2001 was 6,600 ft?/s. Total annual inflow to Lake Clark from the Tlikakila River ranged from 32 to 45 percent of the total inflow. The relatively high proportion of inflow is due to the presence of glaciers, which comprise 36 percent of the watershed. \r\n\r\nMonthly measurements of flow, field water-quality parameters, alkalinity, and suspended sediment were collected on the remaining five tributaries to Lake Clark: the Chokotonk River, Currant Creek, the Kijik River, the Tanalian River and the Chulitna River. Similar to the Tlikakila River, pH and dissolved oxygen concentrations of these rivers are within acceptable limits for fish survival and the rivers have a low buffering capacity. Small amounts of suspended sediment are transported by the Kijik and Tanalian Rivers due to lakes acting as settling basins in their watersheds. The Chulitna River also transports small amounts of suspended sediment due to its flat topography and the presence of many lakes in the basin. Some suspended sediment is transported by the Chokotonk River and Currant Creek during the runoff season due to the presence of glaciers within their basins, but not as much as the Tlikakila River. The Chulitna River provides the most discharge into Lake Clark after the Tlikakila River and has the warmest water temperature of the major tributaries to Lake Clark. Water temperatures of Currant Creek and the Chokotonk River are similar to the Tlikakila River. The Kijik River and Tanalian River have similar temperatures that may be due to the presence of lakes in their basins and are characterize by slowly declining and rising temperatures. At all sites water temperature approaches 0 ?C during winter months which may not be suitable for fish survival.","language":"ENGLISH","doi":"10.3133/wri024127","usgsCitation":"Brabets, T.P., 2002, Water quality of the Tlikakila River and five major tributaries to Lake Clark, Lake Clark National Park and Preserve, Alaska, 1999-2001: U.S. Geological Survey Water-Resources Investigations Report 2002-4127, iv, 29 p. : b ill. (some col.), col. maps ; 28 cm.; 21 illus.; 18 tables, https://doi.org/10.3133/wri024127.","productDescription":"iv, 29 p. : b ill. (some col.), col. maps ; 28 cm.; 21 illus.; 18 tables","costCenters":[],"links":[{"id":3735,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri024127","linkFileType":{"id":5,"text":"html"}},{"id":168829,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48d3e4b07f02db548dd4","contributors":{"authors":[{"text":"Brabets, Timothy P. tbrabets@usgs.gov","contributorId":2087,"corporation":false,"usgs":true,"family":"Brabets","given":"Timothy","email":"tbrabets@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":230183,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":39914,"text":"ofr02127 - 2002 - Basement geology of the National Petroleum Reserve Alaska (NPRA), Northern Alaska","interactions":[],"lastModifiedDate":"2018-05-07T21:34:57","indexId":"ofr02127","displayToPublicDate":"2002-08-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-127","title":"Basement geology of the National Petroleum Reserve Alaska (NPRA), Northern Alaska","docAbstract":"Gravity, aeromagnetic, seismic, and borehole information enable mapping of crustal basement characteristics within the National Petroleum Reserve Alaska (NPRA). In general, the pre-Mississippian basement of the southern portion of the NPRA is different from that in the north in that it is deeper and thinner, is made up of dense magnetic rocks, is cut by more normal faults, and underlies thicker accumulations of Mississippian to Triassic Ellesmerian sequence sedimentary rocks. Mafic igneous rocks within the basement and locally within the deeper Ellesmerian sequence sedimentary section could explain the observed density and magnetic variations. Because these variations spatially overlap thicker Ellesmerian sequence sediment accumulations, they may have developed, at least in part, during Mississippian to Triassic extension and basin formation. If this period of extension, and postulated mafic magmatism, was accompanied by higher heat flow, then early Ellesmerian sequence clastic sediments may have become mature for hydrocarbon generation (Magoon and Bird, 1988). This could have produced an early petroleum system in the Colville basin.","language":"English","publisher":"U.S. Geographical Survey","doi":"10.3133/ofr02127","usgsCitation":"Saltus, R.W., Hudson, T.L., Phillips, J., Kulander, C., Dumoulin, J.A., and Potter, C., 2002, Basement geology of the National Petroleum Reserve Alaska (NPRA), Northern Alaska: U.S. Geological Survey Open-File Report 2002-127, 11 p., https://doi.org/10.3133/ofr02127.","productDescription":"11 p.","costCenters":[],"links":[{"id":3618,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0127/","linkFileType":{"id":5,"text":"html"}},{"id":173615,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"500000","country":"United States","state":"Alaska","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db6487ed","contributors":{"authors":[{"text":"Saltus, R. W.","contributorId":85588,"corporation":false,"usgs":true,"family":"Saltus","given":"R.","middleInitial":"W.","affiliations":[],"preferred":false,"id":222589,"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":222585,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Phillips, J. D. 0000-0002-6459-2821","orcid":"https://orcid.org/0000-0002-6459-2821","contributorId":22366,"corporation":false,"usgs":true,"family":"Phillips","given":"J. D.","affiliations":[],"preferred":false,"id":222586,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kulander, C.","contributorId":6932,"corporation":false,"usgs":true,"family":"Kulander","given":"C.","affiliations":[],"preferred":false,"id":222584,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dumoulin, Julie A. 0000-0003-1754-1287 dumoulin@usgs.gov","orcid":"https://orcid.org/0000-0003-1754-1287","contributorId":203209,"corporation":false,"usgs":true,"family":"Dumoulin","given":"Julie","email":"dumoulin@usgs.gov","middleInitial":"A.","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":222588,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Potter, C.","contributorId":58332,"corporation":false,"usgs":true,"family":"Potter","given":"C.","email":"","affiliations":[],"preferred":false,"id":222587,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":39913,"text":"ofr0272 - 2002 - Preliminary volcano-hazard assessment for Hayes Volcano, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:10:36","indexId":"ofr0272","displayToPublicDate":"2002-08-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-72","title":"Preliminary volcano-hazard assessment for Hayes Volcano, Alaska","language":"ENGLISH","doi":"10.3133/ofr0272","usgsCitation":"Waythomas, C.F., and Miller, T.P., 2002, Preliminary volcano-hazard assessment for Hayes Volcano, Alaska (Version 1.0): U.S. Geological Survey Open-File Report 2002-72, 33 p. and 1 sheet, https://doi.org/10.3133/ofr0272.","productDescription":"33 p. and 1 sheet","costCenters":[],"links":[{"id":173614,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3617,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/of02-072/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aaae4b07f02db6691a7","contributors":{"authors":[{"text":"Waythomas, C. F.","contributorId":10065,"corporation":false,"usgs":true,"family":"Waythomas","given":"C.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":222582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, T. P.","contributorId":49345,"corporation":false,"usgs":true,"family":"Miller","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":222583,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":39923,"text":"ofr02267 - 2002 - Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska: A website for the distribution of data","interactions":[],"lastModifiedDate":"2022-10-31T20:49:35.130052","indexId":"ofr02267","displayToPublicDate":"2002-08-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-267","title":"Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska: A website for the distribution of data","docAbstract":"

No abstract available. 

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02267","usgsCitation":"Water Resources Division, U.S. Geological Survey, 2002, Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska: A website for the distribution of data: U.S. Geological Survey Open-File Report 2002-267, HTML Document, https://doi.org/10.3133/ofr02267.","productDescription":"HTML Document","costCenters":[],"links":[{"id":172384,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3625,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0267/","linkFileType":{"id":5,"text":"html"}},{"id":408939,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51979.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Anchorage, Iliamna, and Tyonek quadrangles","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156,\n 59\n ],\n [\n -147,\n 59\n ],\n [\n -147,\n 62\n ],\n [\n -156,\n 62\n ],\n [\n -156,\n 59\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db689c0b","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":529930,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32931,"text":"fs04502 - 2002 - U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","interactions":[{"subject":{"id":32931,"text":"fs04502 - 2002 - U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs04502","publicationYear":"2002","noYear":false,"title":"U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)"},"predicate":"SUPERSEDED_BY","object":{"id":98833,"text":"fs20103102 - 2010 - 2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs20103102","publicationYear":"2010","noYear":false,"title":"2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)"},"id":1}],"supersededBy":{"id":98833,"text":"fs20103102 - 2010 - 2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs20103102","publicationYear":"2010","noYear":false,"title":"2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)"},"lastModifiedDate":"2012-02-02T00:09:18","indexId":"fs04502","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"045-02","title":"U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","docAbstract":"A new USGS assessment concludes that NPRA holds signicantly greater petroleum resources than previously estimated. Technically recoverable, undiscovered oil beneath the Federal part of NPRA likely ranges between 5.9 and 13.2 billion barrels, with a mean (expected) value of 9.3 billion barrels. An estimated 1.3 to 5.6 billion barrels of those technically recoverable oil resources is economically recoverable at market prices of $22 to $30 per barrel. Technically recoverable, undiscovered nonassociated natural gas for the same area likely ranges between 39.1 and 83.2 trillion cubic feet, with a mean (expected) value of 59.7 trillion cubic feet. The economic viability of this gas will depend on the availability of a natural-gas pipeline for transport to market.","language":"ENGLISH","doi":"10.3133/fs04502","usgsCitation":"Bird, K.J., and Houseknecht, D., 2002, U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): U.S. Geological Survey Fact Sheet 045-02, 6 p., https://doi.org/10.3133/fs04502.","productDescription":"6 p.","costCenters":[],"links":[{"id":3095,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2002/fs045-02/","linkFileType":{"id":5,"text":"html"}},{"id":121946,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_045_02.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a2ce4b07f02db613a18","contributors":{"authors":[{"text":"Bird, K. J.","contributorId":57824,"corporation":false,"usgs":false,"family":"Bird","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":209464,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":209463,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":38169,"text":"fs02202 - 2002 - Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:09:50","indexId":"fs02202","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"022-02","title":"Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska","docAbstract":"The Cook Inlet Basin encompasses 39,325 square miles in south-central Alaska. Approximately 350,000 people, more than half of Alaska?s population, reside in the basin, mostly in the Anchorage area. However, rapid growth is occurring in the Matanuska?Susitna and Kenai Peninsula Boroughs to the north and south of Anchorage. Ground-water resources provide about one-third of the water used for domestic, commercial and industrial purposes in the Anchorage metropolitan area and are the sole sources of water for industries and residents outside Anchorage. In 1997, a study of the Cook Inlet Basin was begun as part of the U.S. Geological Survey?s National Water-Quality Assessment Program. Samples of ground water were collected from 35 existing wells in unconsolidated glacial and alluvial aquifers during 1999 to determine the regional quality of ground water beneath about 790 mi2 of developed land and to gain a better understanding of the natural and human factors that affect the water quality (Glass, 2001). Of the 35 wells sampled, 31 had water analyzed for atmospherically derived substances to determine the ground water?s travel time from its point of recharge to its point of use or discharge?also known as ground-water age.\r\n\r\nGround water moves slowly from its point of recharge to its point of use or discharge. This water starts as rain and melting snow that soak into the ground as recharge. In the Matanuska?Susitna, Anchorage, and Kenai Peninsula areas, ground water generally moves from near the mountain fronts toward Cook Inlet or the major rivers. Much of the water pumped by domestic and public-supply wells may have traveled less than 10 miles, and the trip may have taken as short a time as a few days or as long as several decades. This ground water is vulnerable to contamination from the land surface, and many contaminants in the water would follow the same paths and have similar travel times from recharge areas to points of use as the chemical substances analyzed in this study. The effects of contamination may not be seen for several years after a contaminant is introduced into the ground-water system. Many contaminants could make the water unsuitable for drinking for many years, even in concentrations too low to detect without expensive chemical tests. The travel time of a chemically conservative substance depends primarily on the velocity of ground water through the aquifer, which in turn depends on the hydrologic characteristics of the aquifer system.","language":"ENGLISH","doi":"10.3133/fs02202","usgsCitation":"Glass, R.L., 2002, Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska: U.S. Geological Survey Fact Sheet 022-02, 1 folded sheet ([4] p.) : col. ill., col. maps ; 28 cm. , https://doi.org/10.3133/fs02202.","productDescription":"1 folded sheet ([4] p.) : col. ill., col. maps ; 28 cm. ","costCenters":[],"links":[{"id":124636,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_022_02.bmp"},{"id":3466,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/FS/fs-022-02/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d657","contributors":{"authors":[{"text":"Glass, Roy L.","contributorId":86813,"corporation":false,"usgs":true,"family":"Glass","given":"Roy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":219251,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":69559,"text":"i2543 - 2002 - Geologic and isostatic gravity map of the Nenana basin area, central Alaska","interactions":[],"lastModifiedDate":"2021-11-29T11:32:25.43463","indexId":"i2543","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2543","subseriesTitle":"GIS","title":"Geologic and isostatic gravity map of the Nenana basin area, central Alaska","docAbstract":"

The Nenana Basin area is a prospective petroleum province in central Alaska, and this geologic and isostatic gravity map is part of a petroleum resource assessment of the area.

The geology was compiled from published sources as shown on the index map (map sheet). Map units are organized and presented according to the scheme of lithotectonic terranes proposed by Jones and others (1987) and Silberling and Jones (1984); we recognize, however, that this terrane scheme is controversial and likely to be revised in the future. In some cases, we combined certain terranes because we were unable to match the terrane boundaries given by Jones and others (1987) and Silberling and Jones (1984) with specific faults shown on existing geologic maps. Postaccretion cover deposits represent overlap assemblages that depositionally overlie accreted terranes. Plutonic igneous rocks shown on this map include several plutons that are clearly postaccretionary, based on isotopic ages and (or) field relations. It is possible that some of the plutons predate accretion, but this has not been demonstrated. According to Jones and others (1982), the terranes in the area of our map were assembled during late Mesozoic or earliest Cenozoic time.

The gravity contours are derived from data used in earlier compilations that are supplemented by some National Oceanic and Atmospheric Administration data along the Alaska Pipeline level line. The earlier compilations were used for simple Bouguer maps, prepared primarily by non-digital methods, and are superseded by this map. The present map is the result of digital processing that includes the 1967 Geodetic Reference System, the IGSN-71 datum, digital terrain corrections, and conversion to isostatic gravity so that geologic structures on the margin of the Alaska Range are more clearly portrayed. Computation procedures are described in part by Barnes (1972, 1984), Jachens and Roberts (1981), and Barnes and others (1994). The calculations used a crustal density of 2.67 g/cm3 , a density contrast at the base of the isostatic root of 0.4 g/cm3 , and a root thickness at sea level of 25 km. The distribution of data within the map area is uneven and locally controls the shape of the computer-generated contours. Altimetry was used for most of the elevation control and its inconsistency is responsible for many of the small contour irregularities. Ninety percent of the measurements are estimated to have an accuracy of about 1.5 mgal or about a quarter of the 5 mgal contour interval. Data collection and analysis were assisted by R.V. Allen, R.C. Jachens, M.A. Fisher, T.R. Bruns, J.G. Blank, J.W. Bader, Z.C. Valin, J.W. Cady, R.L. Morin, and P.V. Woodward.

The most promising area for petroleum exploration is a prominent 25 mgal isostatic gravity low north of Nenana (T. 2 S., R. 8 W.). This gravity low probably corresponds to the deepest part of a sedimentary basin filled by Cenozoic strata that includes nonmarine fluvial and lacustrine deposits of the Eocene to Miocene Usibelli Group. Smaller gravity lows are associated with outcrops of these sedimentary rocks north of Suntrana (T. 12 S., R. 6-9 W.) and Sable Pass (T. 16 S., R. 11 W.). A broad low on the north flank of the Alaska Range east of the Wood River (T. 10 S., R. 1 E.) indicates another basin under the Tanana lowland that extends eastward off the map area towards Delta Junction, where its presence was confirmed by both gravity and seismic data.

Gravity modelling suggests that the base of the Usibelli Group in the area north of Nenana (T. 2 S., R. 8 W.) is about 3,000 to 3,350 m beneath the ground surface. Organic geochemical studies indicate that mudstones and coals in the Usibelli Group are potential sources of petroleum; calculations based on borehole temperatures suggest that, in the area of the gravity low, these rocks may have been buried deeply enough to generate oil and gas. Two exploratory wells, the Union Nenana No. 1 and the ARCO Totek Hills No. 11, were drilled some distance away from the gravity low in areas where the Usibelli Group is thin. Mudlogs show that both wells were dry holes that bottomed in schist and had gas shows associated with coal beds in the Usibelli Group, but no reported signs of oil.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i2543","usgsCitation":"Frost, G.M., Barnes, D., and Stanley, R., 2002, Geologic and isostatic gravity map of the Nenana basin area, central Alaska: U.S. Geological Survey IMAP 2543, Report: 17 p.; 1 Plate: 55.00 x 41.00 inches, https://doi.org/10.3133/i2543.","productDescription":"Report: 17 p.; 1 Plate: 55.00 x 41.00 inches","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":188610,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10441,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/i2543/","linkFileType":{"id":5,"text":"html"}},{"id":110339,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_52137.htm","linkFileType":{"id":5,"text":"html"},"description":"52137"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Nenana basin area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -152.05,\n 63.4583\n ],\n [\n -147.4572,\n 63.4583\n ],\n [\n -147.4572,\n 65.4167\n ],\n [\n -152.05,\n 65.4167\n ],\n [\n -152.05,\n 63.4583\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a8103","contributors":{"authors":[{"text":"Frost, G. M.","contributorId":27144,"corporation":false,"usgs":true,"family":"Frost","given":"G.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":280589,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barnes, D.F.","contributorId":48960,"corporation":false,"usgs":true,"family":"Barnes","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":280590,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stanley, R. G. 0000-0001-6192-8783","orcid":"https://orcid.org/0000-0001-6192-8783","contributorId":77123,"corporation":false,"usgs":true,"family":"Stanley","given":"R. G.","affiliations":[],"preferred":false,"id":280591,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70210583,"text":"70210583 - 2002 - Geographic information systems compilation of geophysical, geologic, and tectonic data for the Bering Shelf, Chukchi Sea, Arctic margin, and adjacent landmasses","interactions":[],"lastModifiedDate":"2020-06-11T14:42:31.027467","indexId":"70210583","displayToPublicDate":"2002-06-10T13:43:29","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1727,"text":"GSA Special Papers","active":true,"publicationSubtype":{"id":10}},"title":"Geographic information systems compilation of geophysical, geologic, and tectonic data for the Bering Shelf, Chukchi Sea, Arctic margin, and adjacent landmasses","docAbstract":"

The accompanying CD-ROM contains a compilation of geophysical, geologic, and tectonic data for the Bering Shelf, the Chukchi Sea, the Arctic margin, and adjacent landmasses. These data sets focus on Alaska, the Russian Far East, and the continental shelves that link these two landmasses. For compatibility with other available geographic information system (GIS) products, our GIS compilation extends from 120°E to 115°W, and from 40°N to 80°N. This area encompasses the region from the modern Paciµc plate boundary of the Japan, Kurile, and Aleutian subduction zones, the Queen Charlotte transform fault, and the Cascadia subduction zone (in the south) to the continent-ocean transition from the Eurasian and North American continents to the Arctic Ocean (in the north); and from the diffuse Eurasian–North American plate boundary, including the probable Okhotsk plate (in the west) to the Alaskan-Canadian Cordilleran fold belt (in the east). The CD-ROM comprises thematic layers of spatial data sets for topography, gravity µeld, magnetic µeld, earthquakes, volcanoes, geology, tectonostratigraphic terranes, and cultural reference features, and also includes metadata (data about the data) for all these data sets. The spatial data sets can be viewed, analyzed, and plotted with commercial GIS software (ArcView and ARC/Info) or through a freeware program (ArcExplorer) that is included on this CD-ROM. This GIS compilation provides data for studies of the Mesozoic and Cenozoic collisional and accretionary tectonics that assembled this continental crust and of the neotectonics of active and passive plate margins in this region, and for constructing and interpreting geophysical, geologic, and tectonic models of the region.

","language":"English","publisher":"GSA","doi":"10.1130/0-8137-2360-4.359","usgsCitation":"Klemperer, S.L., Greninger, M.L., and Nokleberg, W.J., 2002, Geographic information systems compilation of geophysical, geologic, and tectonic data for the Bering Shelf, Chukchi Sea, Arctic margin, and adjacent landmasses: GSA Special Papers, v. 360, p. 359-374, https://doi.org/10.1130/0-8137-2360-4.359.","productDescription":"16 p.","startPage":"359","endPage":"374","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":375500,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, United States","state":"Alaska","otherGeospatial":"Arctic margin, Bering Shelf, Chukchi Sea","volume":"360","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Klemperer, Simon L.","contributorId":106929,"corporation":false,"usgs":true,"family":"Klemperer","given":"Simon","email":"","middleInitial":"L.","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":790680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Greninger, Mark L.","contributorId":72816,"corporation":false,"usgs":true,"family":"Greninger","given":"Mark","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":790681,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nokleberg, Warren J. 0000-0002-1574-8869 wnokleberg@usgs.gov","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":2077,"corporation":false,"usgs":true,"family":"Nokleberg","given":"Warren","email":"wnokleberg@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":790682,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":32942,"text":"ofr02207 - 2002 - U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): play maps and technically recoverable resource estimates","interactions":[],"lastModifiedDate":"2014-03-10T15:02:46","indexId":"ofr02207","displayToPublicDate":"2002-06-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-207","title":"U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): play maps and technically recoverable resource estimates","docAbstract":"This report provides a summary of the estimated volume of technically recoverable undiscovered oil and nonassociated gas resources for each of the 24 plays evaluated in the U.S. Geological Survey 2002 petroleum resource assessment of the NPRA (Bird and Houseknecht, 2002). 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The volume is organized into six chapters, each of which contains images and well data (including a GIS project of public domain cores) pertinent to the geology and petroleum potential of NPRA. 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The 89 km long Tangle Lakes profile of 14 magnetotelluric (MT) stations begins 4 km south of the confluence of Augustana Creek and the Delta River in south central Alaska. The northernmost station, TLM13, is located just south of the Denali Fault in the rugged Clearwater Mountains. The north-south profile crosses the Ampitheater Mountains northwest of the Tangle Lakes area and continues until it terminates in the flatlands south of the Alphabet Hills. The profile intersects the Denali Highway 32km west of Paxson.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/ofr02177","usgsCitation":"Sampson, J.A., and Rodriguez, B.D., 2002, Magnetotelluric data along the Tangle Lakes profile, Alaska: U.S. Geological Survey Open-File Report 2002-177, 144 p., https://doi.org/10.3133/ofr02177.","productDescription":"144 p.","costCenters":[],"links":[{"id":163001,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":405727,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51835.htm","linkFileType":{"id":5,"text":"html"}},{"id":3099,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0177/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Tangle Lakes","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -145.6333,\n 62.5947\n ],\n [\n -146.5833,\n 62.5947\n ],\n [\n -146.5833,\n 63.45\n ],\n [\n -145.6333,\n 63.45\n ],\n [\n -145.6333,\n 62.5947\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a80e4b07f02db649436","contributors":{"authors":[{"text":"Sampson, Jay A.","contributorId":13939,"corporation":false,"usgs":true,"family":"Sampson","given":"Jay","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":209470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rodriguez, Brian D. 0000-0002-2263-611X brod@usgs.gov","orcid":"https://orcid.org/0000-0002-2263-611X","contributorId":836,"corporation":false,"usgs":true,"family":"Rodriguez","given":"Brian","email":"brod@usgs.gov","middleInitial":"D.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":209469,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70243114,"text":"70243114 - 2002 - Crustal structure across the Bering Strait, Alaska: Onshore recordings of a marine seismic survey","interactions":[],"lastModifiedDate":"2023-04-28T17:03:14.506487","indexId":"70243114","displayToPublicDate":"2002-05-01T11:55:57","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Crustal structure across the Bering Strait, Alaska: Onshore recordings of a marine seismic survey","docAbstract":"

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","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic margin and adjacent landmasses","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/0-8137-2360-4.25","usgsCitation":"Wolf, L.W., McCaleb, R.C., Stone, D., Brocher, T.M., Fujita, K., and Klemperer, S.L., 2002, Crustal structure across the Bering Strait, Alaska: Onshore recordings of a marine seismic survey, chap. of Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic margin and adjacent landmasses, v. 360, p. 25-37, https://doi.org/10.1130/0-8137-2360-4.25.","productDescription":"13 p.","startPage":"25","endPage":"37","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":416513,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, United States","otherGeospatial":"Bering Sea, Bering Strait region, Chukchi Sea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -145,\n 72\n ],\n [\n -179.9,\n 72\n ],\n [\n -179.9,\n 60\n ],\n [\n -145,\n 60\n ],\n [\n -145,\n 72\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"360","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Wolf, Lorraine W.","contributorId":72817,"corporation":false,"usgs":false,"family":"Wolf","given":"Lorraine","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":871092,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCaleb, Robert C.","contributorId":304593,"corporation":false,"usgs":false,"family":"McCaleb","given":"Robert","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":871093,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stone, David B.","contributorId":65324,"corporation":false,"usgs":true,"family":"Stone","given":"David B.","affiliations":[],"preferred":false,"id":871094,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brocher, Thomas M. 0000-0002-9740-839X brocher@usgs.gov","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":262,"corporation":false,"usgs":true,"family":"Brocher","given":"Thomas","email":"brocher@usgs.gov","middleInitial":"M.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":871095,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fujita, Kazuya","contributorId":15654,"corporation":false,"usgs":true,"family":"Fujita","given":"Kazuya","email":"","affiliations":[],"preferred":false,"id":871096,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Klemperer, Simon L.","contributorId":106929,"corporation":false,"usgs":true,"family":"Klemperer","given":"Simon","email":"","middleInitial":"L.","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":871097,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70243230,"text":"70243230 - 2002 - Constraints on the age of formation of seismically reflective middle and lower crust beneath the Bering Shelf: SHRIMP zircon dating of xenoliths from Saint Lawrence Island","interactions":[],"lastModifiedDate":"2023-05-04T15:14:46.497341","indexId":"70243230","displayToPublicDate":"2002-05-01T10:04:46","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Constraints on the age of formation of seismically reflective middle and lower crust beneath the Bering Shelf: SHRIMP zircon dating of xenoliths from Saint Lawrence Island","docAbstract":"

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\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6fe4b07f02db640a17","contributors":{"authors":[{"text":"Sass, John H.","contributorId":69596,"corporation":false,"usgs":true,"family":"Sass","given":"John","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":208444,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Priest, Susan S. spriest@usgs.gov","contributorId":30204,"corporation":false,"usgs":true,"family":"Priest","given":"Susan","email":"spriest@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":false,"id":208443,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":32373,"text":"ofr02139 - 2002 - Magnetic susceptibilities measured on rocks of the upper Cook Inlet, Alaska","interactions":[],"lastModifiedDate":"2018-05-20T17:03:08","indexId":"ofr02139","displayToPublicDate":"2002-05-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-139","title":"Magnetic susceptibilities measured on rocks of the upper Cook Inlet, Alaska","docAbstract":"We have measured magnetic susceptibility in the field on most of the geologic rock formations exposed in the upper Cook Inlet near Anchorage and Kenai, Alaska. Measured susceptibilities range from less than our detection limit of 0.01 x 10-3 (SI) to greater than 100 x 10-3 (SI). As expected, mafic igneous rocks have the highest susceptibilities and some sedimentary rocks the lowest. Rocks of the Tertiary Sterling Formation yielded some moderate to high susceptibility values. Although we do not have detailed information on the magnetic mineralogy of the rocks measured here, the higher susceptibilities are sufficient to explain the magnitudes of some short-wavelength aeromagnetic anomalies observed on recent surveys of the upper Cook Inlet.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02139","usgsCitation":"Alstatt, A., Saltus, R.W., Bruhn, R., and Haeussler, P.J., 2002, Magnetic susceptibilities measured on rocks of the upper Cook Inlet, Alaska: U.S. Geological Survey Open-File Report 2002-139, 18 p., https://doi.org/10.3133/ofr02139.","productDescription":"18 p.","costCenters":[],"links":[{"id":163482,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3359,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0139/","linkFileType":{"id":5,"text":"html"}}],"country":"United States ","state":"Alaska","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a80e4b07f02db649365","contributors":{"authors":[{"text":"Alstatt, A.A.","contributorId":36984,"corporation":false,"usgs":true,"family":"Alstatt","given":"A.A.","email":"","affiliations":[],"preferred":false,"id":208453,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saltus, R. W.","contributorId":85588,"corporation":false,"usgs":true,"family":"Saltus","given":"R.","middleInitial":"W.","affiliations":[],"preferred":false,"id":208456,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bruhn, R.L.","contributorId":46972,"corporation":false,"usgs":true,"family":"Bruhn","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":208454,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"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":208455,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":31583,"text":"ofr0254 - 2002 - Alaska resource data file: Nulato quadrangle","interactions":[],"lastModifiedDate":"2025-07-28T20:02:29.838903","indexId":"ofr0254","displayToPublicDate":"2002-04-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-54","title":"Alaska resource data file: Nulato quadrangle","docAbstract":"

No abstract available.

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No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr0275","usgsCitation":"Dashevsky, S., 2002, Alaska resource data file: Norton Bay quadrangle: U.S. Geological Survey Open-File Report 2002-75, 27 p., https://doi.org/10.3133/ofr0275.","productDescription":"27 p.","costCenters":[],"links":[{"id":160804,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":493046,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0075/ofr0275.pdf","text":"Report","size":"191 KB","linkFileType":{"id":1,"text":"pdf"}},{"id":389309,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_50927.htm","linkFileType":{"id":5,"text":"html"}},{"id":2861,"rank":4,"type":{"id":18,"text":"Project Site"},"url":"https://doi.org/10.5066/P96MMRFD","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Norton Bay quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -162,\n 64\n ],\n [\n -159,\n 64\n ],\n [\n -159,\n 65.0\n ],\n [\n -162,\n 65.0\n ],\n [\n -162,\n 64\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688e12","contributors":{"authors":[{"text":"Dashevsky, S.S.","contributorId":81955,"corporation":false,"usgs":true,"family":"Dashevsky","given":"S.S.","affiliations":[],"preferred":false,"id":206497,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}