{"pageNumber":"174","pageRowStart":"4325","pageSize":"25","recordCount":36989,"records":[{"id":70094223,"text":"ofr20071047SRP060 - 2007 - High-resolution airborne gravity imaging over James Ross Island (West Antarctica)","interactions":[],"lastModifiedDate":"2014-02-18T16:24:14","indexId":"ofr20071047SRP060","displayToPublicDate":"2007-02-01T16:06:00","publicationYear":"2007","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":"2007-1047-SRP-060","title":"High-resolution airborne gravity imaging over James Ross Island (West Antarctica)","docAbstract":"James Ross Island (JRI) exposes a Miocene-Recent alkaline basaltic volcanic complex that developed in a \nback-arc, east of the northern Antarctic Peninsula. JRI has been the focus of several geological studies because it \nprovides a window on Neogene magmatic processes and paleoenvironments. However, little is known about its internal \nstructure. New airborne gravity data were collected as part of the first high-resolution aerogeophysical survey flown over \nthe island and reveal a prominent negative Bouguer gravity anomaly over Mt Haddington. This is intriguing as basaltic \nvolcanoes are typically associated with positive Bouguer anomalies, linked to underlying mafic intrusions. The negative \nBouguer anomaly may be associated with a hitherto unrecognised low-density sub-surface body, such as a breccia-filled \ncaldera, or a partially molten magma chamber.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP060","usgsCitation":"Jordan, T., Ferraccioli, F., Jones, P., Smellie, J., Ghidella, M., Corr, H.F., and Zakrajsek, A., 2007, High-resolution airborne gravity imaging over James Ross Island (West Antarctica): U.S. Geological Survey Open-File Report 2007-1047-SRP-060, 4 p., https://doi.org/10.3133/ofr20071047SRP060.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":282511,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp060/of2007-1047srp060.pdf"},{"id":282512,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP060.JPG"}],"otherGeospatial":"Antarctica;James Ross Island","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -58.4696,-64.4716 ], [ -58.4696,-63.7787 ], [ -57.0355,-63.7787 ], [ -57.0355,-64.4716 ], [ -58.4696,-64.4716 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd608de4b0b290850fcfc1","contributors":{"authors":[{"text":"Jordan, T.A.","contributorId":101183,"corporation":false,"usgs":true,"family":"Jordan","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":490581,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ferraccioli, Fausto","contributorId":43591,"corporation":false,"usgs":true,"family":"Ferraccioli","given":"Fausto","email":"","affiliations":[],"preferred":false,"id":490575,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jones, P.C.","contributorId":70281,"corporation":false,"usgs":true,"family":"Jones","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":490578,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smellie, J.L.","contributorId":95385,"corporation":false,"usgs":true,"family":"Smellie","given":"J.L.","affiliations":[],"preferred":false,"id":490579,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ghidella, M.","contributorId":95794,"corporation":false,"usgs":true,"family":"Ghidella","given":"M.","affiliations":[],"preferred":false,"id":490580,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Corr, H. F. J.","contributorId":68214,"corporation":false,"usgs":true,"family":"Corr","given":"H.","email":"","middleInitial":"F. J.","affiliations":[],"preferred":false,"id":490577,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Zakrajsek, A.F.","contributorId":52483,"corporation":false,"usgs":true,"family":"Zakrajsek","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":490576,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70074785,"text":"ofr20071047SRP - 2007 - Main Andean sinistral shear along the Cooper Bay Dislocation Zone, South Georgia?","interactions":[],"lastModifiedDate":"2014-02-03T15:54:22","indexId":"ofr20071047SRP","displayToPublicDate":"2007-02-01T15:43:00","publicationYear":"2007","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":"2007-1047-SRP-034","title":"Main Andean sinistral shear along the Cooper Bay Dislocation Zone, South Georgia?","docAbstract":"The Cooper Bay Dislocation Zone (CBDZ) represents a major NW-SE trending tectonic boundary within\nthe island of South Georgia that juxtaposes components of a Middle Jurassic to mid-Cretaceous island-arc and back-arc-\nbasin system. New detailed structural data from the southern end of the dislocation zone reveal that earliest\ndisplacement along the boundary appears to have been associated with dip-slip reverse shear, characterised by\nwidespread proto- to meso-mylonitic granitic rocks within the basement assemblage exposed to the southwest of the\nshear zone. Along the northeast margin, highly sheared and mylonitised metasedimentary and metabasic rocks reveal\nsinistral strike-slip kinematics and a sub-horizontal mineral lineation. Narrow zones of sinistral shear are locally superimposed within the basement rocks along the SW margin, that together with the presence of brittle sinistral faults\nsuggest that the strike-slip component of deformation postdates the dip-slip. Comparison with the tectonic history of the\nRocas Verdas Marginal Basin, Fuegian Andes, suggests that the sinistral shear event preserved along the CBDZ maybe\nbe related to Late Cretaceous, main Andean orogenic transpression, although a Cenozoic event cannot to ruled out.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP","usgsCitation":"Curtis, M., 2007, Main Andean sinistral shear along the Cooper Bay Dislocation Zone, South Georgia?: U.S. Geological Survey Open-File Report 2007-1047-SRP-034, 4 p., https://doi.org/10.3133/ofr20071047SRP.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281934,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP.JPG"},{"id":281933,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp034/of2007-1047srp034.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd655be4b0b290851000aa","contributors":{"authors":[{"text":"Curtis, M.L.","contributorId":55335,"corporation":false,"usgs":true,"family":"Curtis","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":489880,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70074747,"text":"ofr20071047SRP026 - 2007 - Extensive debris flow deposits on the eastern Wilkes Land margin: a key to changing glacial regimes","interactions":[],"lastModifiedDate":"2014-02-03T13:26:19","indexId":"ofr20071047SRP026","displayToPublicDate":"2007-02-01T13:19:00","publicationYear":"2007","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":"2007-1047-SRP-026","title":"Extensive debris flow deposits on the eastern Wilkes Land margin: a key to changing glacial regimes","docAbstract":"Glacial sequences deposited on the base-of-slope and upper continental rise off the eastern Wilkes\nLand margin show that depositional systems vary with time. During the early Oligocene to middle-late\nMiocene times glacial sequences are dominated by extensive glacigenic debris flow deposits (GDFs) that\nhave lens or wedge shaped external geometries and internal chaotic seismic facies. Minimum runout\ndistances are between 15 and 50 km with lateral extent between 5 and 13 km. Thicknesses vary between 170\nand 380 m. We suggest that large volumes of melt-water production by a dynamic East Antarctic Ice Sheet\n(EAIS) define this glacial regime, which led to high sediment discharge onto the continental shelf and caused\nextensive sediment failures on the continental slope and rise. In contrast, during the Late Miocene-Pliocene\ntransition there was an evolution to a more persistent cold-based EAIS characterized by decrease rates of\nglacial erosion and decrease production of melt-water resulting in mixed turbidite and debris flow deposition.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP026","usgsCitation":"Escutia, C., Donda, F., Lobo, F., and Tanahashi, M., 2007, Extensive debris flow deposits on the eastern Wilkes Land margin: a key to changing glacial regimes: U.S. Geological Survey Open-File Report 2007-1047-SRP-026, 4 p., https://doi.org/10.3133/ofr20071047SRP026.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281894,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp026/of2007-1047srp026.pdf"},{"id":281896,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP026.JPG"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd58dae4b0b290850f85c5","contributors":{"authors":[{"text":"Escutia, C.","contributorId":88514,"corporation":false,"usgs":true,"family":"Escutia","given":"C.","affiliations":[],"preferred":false,"id":489791,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Donda, F.","contributorId":40792,"corporation":false,"usgs":true,"family":"Donda","given":"F.","email":"","affiliations":[],"preferred":false,"id":489790,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lobo, F.J.","contributorId":36848,"corporation":false,"usgs":true,"family":"Lobo","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":489789,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tanahashi, M.","contributorId":7174,"corporation":false,"usgs":true,"family":"Tanahashi","given":"M.","affiliations":[],"preferred":false,"id":489788,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70074331,"text":"ofr20071047SRP020 - 2007 - Antarctic ice-rafted detritus (IRD) in the South Atlantic: Indicators of iceshelf  dynamics or ocean surface conditions?","interactions":[],"lastModifiedDate":"2014-01-29T10:33:00","indexId":"ofr20071047SRP020","displayToPublicDate":"2007-01-30T08:45:00","publicationYear":"2007","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":"2007-1047-SRP-020","title":"Antarctic ice-rafted detritus (IRD) in the South Atlantic: Indicators of iceshelf  dynamics or ocean surface conditions?","docAbstract":"Ocean sediment core TN057-13PC4/ODP1094, from the Atlantic sector of the Southern Ocean, contains \nelevated lithogenic material in sections representing the last glacial period compared to the Holocene. This ice-rafted \ndetritus is mainly comprised of volcanic glass and ash, but has a significant input of what was previously interpreted as \nquartz during peak intervals (Kanfoush et al., 2000, 2002). Our analysis of these clear mineral grains indicates that most \nare plagioclase, and that South Sandwich Islands is the predominant source, similar to that inferred for the volcanic \nglass (Nielsen et al., in review). In addition, quartz and feldspar with possible Antarctic origin occur in conjunction with \npostulated episodes of Antarctic deglaciation. We conclude that while sea ice was the dominant ice rafting agent in the \nPolar Frontal Zone of the South Atlantic during the last glacial period, the Holocene IRD variability may reflect \nAntarctic ice sheet dynamics.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U,S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP020","usgsCitation":"Nielsen, S.H., and Hodell, D., 2007, Antarctic ice-rafted detritus (IRD) in the South Atlantic: Indicators of iceshelf  dynamics or ocean surface conditions?: U.S. Geological Survey Open-File Report 2007-1047-SRP-020, 5 p., https://doi.org/10.3133/ofr20071047SRP020.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281643,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP020.png"},{"id":281642,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp020/of2007-1047srp020.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4d6de4b0b290850f182c","contributors":{"authors":[{"text":"Nielsen, Simon H.H.","contributorId":18263,"corporation":false,"usgs":true,"family":"Nielsen","given":"Simon","email":"","middleInitial":"H.H.","affiliations":[],"preferred":false,"id":489498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hodell, D.A.","contributorId":13463,"corporation":false,"usgs":true,"family":"Hodell","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":489497,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":79603,"text":"ofr20071023 - 2007 - Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006","interactions":[],"lastModifiedDate":"2012-02-02T00:14:20","indexId":"ofr20071023","displayToPublicDate":"2007-01-30T00:00:00","publicationYear":"2007","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":"2007-1023","title":"Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006","docAbstract":"Little is known about the survival of ESA-listed juvenile coho salmon during their seaward migration in the lower Klamath River. In 2006, the Bureau of Reclamation funded a study to estimate the survival of radio-tagged juvenile coho salmon in the Klamath River downstream of Iron Gate Dam. A series of models were evaluated to determine if survival varied between hatchery and wild fish and among several river reaches between the dam river kilometer 33, a total distance of 276 kilometers. The results from 2006, the first year of study, indicated little support for differences in survival between hatchery and wild fish and lower survival in the most upstream reach than in those farther downstream. This document is a brief summary of survival results to date.","language":"ENGLISH","doi":"10.3133/ofr20071023","collaboration":"Prepared in cooperation with the Bureau of Reclamation","usgsCitation":"Beeman, J.W., 2007, Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006: U.S. Geological Survey Open-File Report 2007-1023, iv, 6 p., https://doi.org/10.3133/ofr20071023.","productDescription":"iv, 6 p.","numberOfPages":"10","temporalStart":"2006-01-01","temporalEnd":"2006-12-31","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":194644,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9225,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1023/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db6983d3","contributors":{"authors":[{"text":"Beeman, John W. jbeeman@usgs.gov","contributorId":2646,"corporation":false,"usgs":true,"family":"Beeman","given":"John","email":"jbeeman@usgs.gov","middleInitial":"W.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":290340,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70074354,"text":"ofr20071047SRP023 - 2007 - Zircon U-Pb Ages from an Ultra-High Temperature Metapelite, Rauer Group, East Antarctica: Implications for Overprints by Grenvillian and Pan-African Events","interactions":[],"lastModifiedDate":"2014-01-29T12:53:57","indexId":"ofr20071047SRP023","displayToPublicDate":"2007-01-29T12:16:00","publicationYear":"2007","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":"2007-1047-SRP-023","title":"Zircon U-Pb Ages from an Ultra-High Temperature Metapelite, Rauer Group, East Antarctica: Implications for Overprints by Grenvillian and Pan-African Events","docAbstract":"SHRIMP U-Pb dating of zircon from an ultra-high temperature (UHT, ~1000 °C) granulite-facies metapelite \nfrom the Rauer Group, Mather Peninsula, east Antarctica, has yielded evidence for two episodes of metamorphic zircon \ngrowth, at ~1.00 Ga and ~530 Ma, and two episodes of magmatism in the source region for the protolith sediment, at \n~2.53 and ~2.65 Ga, were identified from the zircon cores. Successive zircon growth at ~1.00 Ga and ~530 Ma records \na sequence of distinct, widely spaced high-temperature metamorphic and/or anatectic events related to Grenvillian and \nPan-African orogenesis. This study presents the first robust geochronological evidence for the timing of UHT \nmetamorphism of the Rauer Group, supporting arguments that the peak UHT metamorphic event occurred at ~1.00 Ga \nand was overprinted by a separate high-grade event at ~530 Ma. The new age data indicate that the UHT granulites of \nthe Rauer Group experienced a complex, multi-stage tectonothermal history, which cannot simply be explained via a \nsingle Pan-African (~500 Ma) high-grade tectonic event. This is critical in understanding the role of the eastern Prydz \nBay region during the assembly of the east Gondwana supercontinent, and the newly recognized inherited Archaean \nages (~2.53 and ~2.65 Ga) suggest a close tectonic relationship between the Rauer Group and the adjacent Archaean of \nthe Vestfold Hills","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP023","usgsCitation":"Wang, Y., Tong, L., and Liu, D., 2007, Zircon U-Pb Ages from an Ultra-High Temperature Metapelite, Rauer Group, East Antarctica: Implications for Overprints by Grenvillian and Pan-African Events: U.S. Geological Survey Open-File Report 2007-1047-SRP-023, 4 p., https://doi.org/10.3133/ofr20071047SRP023.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281656,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP023.png"},{"id":281655,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp023/of2007-1047srp023.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7defe4b0b2908510fb24","contributors":{"authors":[{"text":"Wang, Yanbin","contributorId":18678,"corporation":false,"usgs":true,"family":"Wang","given":"Yanbin","email":"","affiliations":[],"preferred":false,"id":489537,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tong, Laixi","contributorId":103965,"corporation":false,"usgs":true,"family":"Tong","given":"Laixi","email":"","affiliations":[],"preferred":false,"id":489539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, Dunyi","contributorId":92173,"corporation":false,"usgs":true,"family":"Liu","given":"Dunyi","email":"","affiliations":[],"preferred":false,"id":489538,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":79599,"text":"ofr20061368 - 2007 - U.S. Geological Survey Georgia Water Science Center and City of Brunswick–Glynn County Cooperative Water Program— Summary of activities, July 2005 through June 2006","interactions":[],"lastModifiedDate":"2021-09-29T20:47:02.580711","indexId":"ofr20061368","displayToPublicDate":"2007-01-29T00:00:00","publicationYear":"2007","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":"2006-1368","title":"U.S. Geological Survey Georgia Water Science Center and City of Brunswick–Glynn County Cooperative Water Program— Summary of activities, July 2005 through June 2006","docAbstract":"Since 1959, the U.S. Geological Survey has conducted a cooperative water resources program (CWP) with the City of Brunswick and Glynn County in the Brunswick, Georgia, area. Since the late 1950s, the salinity of ground water in the Upper Floridan aquifer near downtown Brunswick, Georgia, has been increasing, and its occurrence has been detected across an area of increasing size. Pumping of the Upper Floridan aquifer near downtown Brunswick has lowered water levels in the aquifer and resulted in an upward hydraulic gradient between the highly saline parts of the Lower Floridan aquifer and the normally fresh Upper Floridan aquifer. Saltwater likely enters the Upper Floridan aquifer through localized, vertically oriented conduits of relatively high permeability and moves laterally in response to the distribution of stresses within the aquifer.\r\n\r\nThe Brunswick-Glynn County CWP for fiscal year 2006 includes the operation and maintenance of 12 continuous water-level recorders. In addition, water-level data were collected from 52 wells and water from 70 wells was analyzed for chloride concentration during June 2005. Geophysical logs were obtained from one well to assess whether the cause of elevated chloride concentration could be due to leaky well casing. A summary of the Georgia Department of Natural Resources, Environmental Protection Division (GaEPD) Georgia Coastal Sound Science Initiative (CSSI) activities that directly benefit the CWP-Brunswick-Glynn County is included in this report. The GaEPD CSSI is a program of scientific and feasibility studies to support development of a final strategy to protect the Upper Floridan aquifer from saltwater contamination. These data presented in this report are needed by State and local authorities to manage water resources effectively in the coastal area of Georgia.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20061368","usgsCitation":"Cherry, G.S., 2007, U.S. Geological Survey Georgia Water Science Center and City of Brunswick–Glynn County Cooperative Water Program— Summary of activities, July 2005 through June 2006: U.S. Geological Survey Open-File Report 2006-1368, v, 58 p., https://doi.org/10.3133/ofr20061368.","productDescription":"v, 58 p.","numberOfPages":"70","onlineOnly":"Y","temporalStart":"2005-07-01","temporalEnd":"2006-06-30","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":389994,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_80641.htm"},{"id":192638,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9220,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1368/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Georgia","county":"Glynn County","city":"Brunswick","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.551513671875,\n              31.103509440594742\n            ],\n            [\n              -81.42105102539061,\n              31.103509440594742\n            ],\n            [\n              -81.42105102539061,\n              31.22219703210317\n            ],\n            [\n              -81.551513671875,\n              31.22219703210317\n            ],\n            [\n              -81.551513671875,\n              31.103509440594742\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e4e4b07f02db5e60b1","contributors":{"authors":[{"text":"Cherry, Gregory S. 0000-0002-5567-1587 gccherry@usgs.gov","orcid":"https://orcid.org/0000-0002-5567-1587","contributorId":1567,"corporation":false,"usgs":true,"family":"Cherry","given":"Gregory","email":"gccherry@usgs.gov","middleInitial":"S.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":316,"text":"Georgia Water Science Center","active":true,"usgs":true}],"preferred":true,"id":290331,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":79597,"text":"ofr20061378 - 2007 - Type region of the Ione Formation (Eocene), central California: Stratigraphy, paleogeography, and relation to auriferous gravels","interactions":[],"lastModifiedDate":"2022-06-29T19:11:23.630294","indexId":"ofr20061378","displayToPublicDate":"2007-01-26T00:00:00","publicationYear":"2007","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":"2006-1378","title":"Type region of the Ione Formation (Eocene), central California: Stratigraphy, paleogeography, and relation to auriferous gravels","docAbstract":"The middle Eocene Ione Formation extends over 200 miles (320 km) along the western edge of the Sierra Nevada. Our study was concentrated in the type region, 30 miles (48 km) along strike. There a bedrock ridge forms the seaward western side of the Ione depositional tract, defining a subbasin margin. The eastern limit of the type Ione is locally defined by high-angle faults. \r\n\r\nIone sediments were spread over Upper Mesozoic metamorphic and plutonic bedrock, fed by gold-bearing streams dissecting the western slope of the ancestral Sierra Nevada. By middle Eocene time, a tropical or subtropical climate prevailed, leading to deep chemical weathering (including laterization) and a distinctively mature mineral assemblage was fed to and generated within Ione deposits. The Ione is noted for its abundant kaolinitic clay, some of it coarsely crystalline; the clay is present as both detrital grains and authigenic cement. Quartz is abundant, mostly as angular grains. Heavy mineral fractions are dominated by altered ilmenite and zircon. Distribution of feldspar is irregular, both stratigraphically and areally. \r\n\r\nNon-marine facies are most voluminous, and include conglomerates, especially at the base and along the eastern margins of the formation where they pass into Sierran auriferous gravels. Clays, grading into lignites, and gritty sands are also common facies. Both braided and meandering fluvial facies have been recognized. \r\n\r\nShallow marine waters flooded the basin probably twice. Tongues of sediment exhibiting a variety of estuarine to marine indicators are underlain and overlain by fluvial deposits. Marine body fossils are found at only a few localities, but burrows identified as Ophiomorpha and cf. Thalassinoides are abundant in many places. Other clues to marginal marine deposition are the occurrence of glauconite in one bed, typical relations of lagoonal to beach (locally heavy-mineral-rich) lithofacies, closed-basin three-dimensional morphology of basinal facies, and high sulfur content of some marginal coals. \r\n\r\nThe Ione has been said to be deltaic; however the two transgressional-regressional cycles we propose imply that only the regressional parts were deltaic. At other times, much of the type Ione would better be termed an intertidal estuary. Because the lower marine sequence was deposited against a paleobasin margin on the west, deltaic morphology was constrained, but apparently progradation was from north to south despite drainage into the basin from the east. Relations to the south are unclear due to the Stockton arch. The eastern margin of the type-Ione basin, and to some extent even its marine facies, are poorly constrained. A surface on Sierran bedrock to the east may have been stripped of some Ione basinal facies, leaving only coeval entrenched fluvial channel deposits.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20061378","usgsCitation":"Creely, S., and Force, E.R., 2007, Type region of the Ione Formation (Eocene), central California: Stratigraphy, paleogeography, and relation to auriferous gravels (Version 1.0): U.S. Geological Survey Open-File Report 2006-1378, 65 p., https://doi.org/10.3133/ofr20061378.","productDescription":"65 p.","numberOfPages":"65","costCenters":[{"id":658,"text":"Western Mineral Resources","active":false,"usgs":true}],"links":[{"id":191981,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":402711,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_80590.htm","linkFileType":{"id":5,"text":"html"}},{"id":9218,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1378/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.1494,\n              38.1917\n            ],\n            [\n              -120.8281,\n              38.1917\n            ],\n            [\n              -120.8281,\n              38.6033\n            ],\n            [\n              -121.1494,\n              38.6033\n            ],\n            [\n              -121.1494,\n              38.1917\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a48e4b07f02db6234a9","contributors":{"authors":[{"text":"Creely, Scott","contributorId":16044,"corporation":false,"usgs":true,"family":"Creely","given":"Scott","email":"","affiliations":[],"preferred":false,"id":290325,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Force, Eric R.","contributorId":32916,"corporation":false,"usgs":true,"family":"Force","given":"Eric","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":290326,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70068874,"text":"ofr20071047SRP012 - 2007 - New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana","interactions":[],"lastModifiedDate":"2014-01-13T14:13:04","indexId":"ofr20071047SRP012","displayToPublicDate":"2007-01-24T14:04:00","publicationYear":"2007","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":"2007-1047-SRP-012","title":"New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana","docAbstract":"Five of six Rb-Sr muscovite mineral isochron ages from the Scotia Metamorphic Complex of the South \nOrkney Islands, West Antarctica, average 190 ± 4 Ma. The muscovite ages are interpreted to date foliation-formation \nand thus also accretion and subduction at the Gondwana margin. Coincident picrite and ferropicrite magmatism, \nindicative of melts from deep-seated depleted mantle, permits a causative link between accretion and the arrival of the \nKaroo – Ferrar – Chon Aike mantle plume in the Early Jurassic. Three biotite Rb-Sr mineral isochron ages are \nconsistently younger and average 176 ± 5 Ma. The biotite ages may record post-metamorphic cooling or more likely \nretrogressive metamorphic effects during uplift.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP012","usgsCitation":"Flowerdew, M., Daly, J., and Riley, T., 2007, New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana: U.S. Geological Survey Open-File Report 2007-1047-SRP-012, 4 p., https://doi.org/10.3133/ofr20071047SRP012.","productDescription":"4 p.","onlineOnly":"N","costCenters":[],"links":[{"id":280905,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP012.JPG"},{"id":280903,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp012/of2007-1047srp012.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd68eee4b0b290851025eb","contributors":{"authors":[{"text":"Flowerdew, M.J.","contributorId":105643,"corporation":false,"usgs":true,"family":"Flowerdew","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":488168,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Daly, J.S.","contributorId":7176,"corporation":false,"usgs":true,"family":"Daly","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":488167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Riley, T.R.","contributorId":107609,"corporation":false,"usgs":true,"family":"Riley","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":488169,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70098957,"text":"ofr20071047SRP078 - 2007 - Major, trace element and stable isotope geochemistry of synorogenic breccia bodies, Ellsworth Mountains, Antarctica","interactions":[],"lastModifiedDate":"2014-03-31T16:01:41","indexId":"ofr20071047SRP078","displayToPublicDate":"2007-01-24T13:36:00","publicationYear":"2007","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":"2007-1047-SRP-078","title":"Major, trace element and stable isotope geochemistry of synorogenic breccia bodies, Ellsworth Mountains, Antarctica","docAbstract":"Cambrian carbonates in the Heritage Range of the Ellsworth Mountains, West Antarctica host a series of \ncarbonate-rich breccia bodies that formed contemporaneously with the Permian Gondwanide orogen. The breccia \nbodies had a three-stage genesis, with the older breccias containing Cambrian limestone (and marble) clasts supported \nby calcite, whereas the younger breccias are nearly clast-free and composed entirely of matrix calcite. Breccia clasts, \ncalcite matrix and detrital matrix samples were analyzed using x-ray fluorescence (major and trace elements), x-ray \ndiffraction, and stable isotopes (C, O) and suggest that the breccias formed as part of a closed geochemical system, at \nconsiderable depth, within the Cambrian limestone host as the Ellsworth Mountains deformed into a fold-and-thrust belt \nalong the margin of Gondwana","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Society","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP078","usgsCitation":"Craddock, J., McGillion, M., and Webers, G., 2007, Major, trace element and stable isotope geochemistry of synorogenic breccia bodies, Ellsworth Mountains, Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-078, 3 p., https://doi.org/10.3133/ofr20071047SRP078.","productDescription":"3 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":285160,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP078.JPG"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"535594aee4b0120853e8c060","contributors":{"authors":[{"text":"Craddock, J.P.","contributorId":7621,"corporation":false,"usgs":true,"family":"Craddock","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":491798,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGillion, M.S.","contributorId":46418,"corporation":false,"usgs":true,"family":"McGillion","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":491800,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Webers, G.F.","contributorId":37651,"corporation":false,"usgs":true,"family":"Webers","given":"G.F.","affiliations":[],"preferred":false,"id":491799,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70072111,"text":"ofr20071047SRP018 - 2007 - Synthetic seismograms and spectral cycles on the Andvord and Schollaert Drifts:  Antarctic Peninsula","interactions":[],"lastModifiedDate":"2014-01-14T17:02:28","indexId":"ofr20071047SRP018","displayToPublicDate":"2007-01-23T16:45:00","publicationYear":"2007","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":"2007-1047-SRP-018","title":"Synthetic seismograms and spectral cycles on the Andvord and Schollaert Drifts:  Antarctic Peninsula","docAbstract":"The geological significance of seismic reflectors within large sediment deposits of the Gerlache Strait\n(Schollaert Drift) and the mouth of Andvord Bay (Andvord Drift) has been examined using synthetic seismograms. The \nseismograms generated from the physical properties in jumbo piston cores taken at each of these drifts (28JPC and \n18JPC respectively) show good agreement with the field seismic profiles when core disturbance is taken into \nconsideration. Both cores suggest an under-sampling of up to 30% (or compaction) during coring. This leads to \ninaccuracy in the evaluation of past sedimentation rates and thus interpretations on these rates may be biased.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP018","usgsCitation":"Manley, P., and Brachfeld, S., 2007, Synthetic seismograms and spectral cycles on the Andvord and Schollaert Drifts:  Antarctic Peninsula: U.S. Geological Survey Open-File Report 2007-1047-SRP-018, 5 p., https://doi.org/10.3133/ofr20071047SRP018.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281064,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP018.JPG"},{"id":281063,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp018/of2007-1047srp018.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7635e4b0b2908510abfe","contributors":{"authors":[{"text":"Manley, P.L.","contributorId":103477,"corporation":false,"usgs":true,"family":"Manley","given":"P.L.","email":"","affiliations":[],"preferred":false,"id":488501,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brachfeld, S.","contributorId":91256,"corporation":false,"usgs":true,"family":"Brachfeld","given":"S.","email":"","affiliations":[],"preferred":false,"id":488500,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70068817,"text":"ofr20071047SRP010 - 2007 - Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation","interactions":[],"lastModifiedDate":"2014-01-13T13:42:59","indexId":"ofr20071047SRP010","displayToPublicDate":"2007-01-23T13:34:00","publicationYear":"2007","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":"2007-1047-SRP-010","title":"Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation","docAbstract":"A sediment sequence recovered from the Vega Drift, Antarctica was analyzed for benthic foraminifera to \ndetermine Holocene oceanographic and climatic variability of the northern Antarctic Peninsula margin. Core \nNBP0003-JPC38, collected during cruise 00-03 of the R.V. Nathaniel B. Palmer recovered 20.53 meters of Holocene \nglacio-marine sediments. Samples were collected every 4 cm for foraminiferal analyses. The data were analyzed using \nprincipal component and cluster analyses. Results of these analyses show significant stratigraphic changes in the \nbenthic foraminiferal record of the Vega Drift. \nThree assemblages characterize the core, including the Miliammina arenacea, Textulariawiesneri, and Stainforthia\nfusiformis assemblages. Most agglutinated forms tend to decrease downcore, and comparisons to modern analogues \nimply post-depositional disintegration, while calcareous taxa indicate non-corrosive bottom waters. The lower to \nmiddle Holocene Vega Drift sediments are characterized by the calcareous S. fusiformis assemblage and glacial plume \nsediments. This assemblage is characterized by calcareous forms including Globocassidulina biora, G. subglobosa, and \nNonionella iridea. The planktic species Neogloboquadrina pachyderma is associated with the S. fusiformis assemblage. \nThe S. fusiformis assemblage is faunally similar to assemblages described in fjords of the western Antarctic Peninsula \nand indicates non-corrosive bottom water. Sediments of the mid to upper Holocene interval are characterized by the T. \nwiesneri and M. arenacea assemblages and indicate the presence of Hyper Saline Shelf Water. These assemblages are \nsimilar to modern assemblages directly to the south in the Prince Gustav Channel. The upper Holocene is marked by \nseveral small intervals with taxonomic characteristics similar to the S. fusiformis assemblage, indicating periodic \nintroduction of non-corrosive bottom water to the Vega Drift","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP010","usgsCitation":"Szymcek, P., Ishman, S.E., Domack, E.W., and Leventer, A., 2007, Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation: U.S. Geological Survey Open-File Report 2007-1047-SRP-010, Text: 4 p.; Plate: 36 p., https://doi.org/10.3133/ofr20071047SRP010.","productDescription":"Text: 4 p.; Plate: 36 p.","additionalOnlineFiles":"Y","costCenters":[],"links":[{"id":280898,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP010.JPG"},{"id":280896,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp010/of2007-1047srp010_text.pdf"},{"id":280897,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp010/of2007-1047srp010_plate1.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd60b2e4b0b290850fd180","contributors":{"authors":[{"text":"Szymcek, Phillip","contributorId":53693,"corporation":false,"usgs":true,"family":"Szymcek","given":"Phillip","email":"","affiliations":[],"preferred":false,"id":488147,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ishman, Scott E.","contributorId":102468,"corporation":false,"usgs":true,"family":"Ishman","given":"Scott","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":488149,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Domack, Eugene W.","contributorId":27783,"corporation":false,"usgs":true,"family":"Domack","given":"Eugene","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":488146,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leventer, Amy","contributorId":80580,"corporation":false,"usgs":true,"family":"Leventer","given":"Amy","email":"","affiliations":[],"preferred":false,"id":488148,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70068815,"text":"ofr20071047SRP009 - 2007 - The Cosmonaut Sea Wedge","interactions":[],"lastModifiedDate":"2014-01-13T13:28:29","indexId":"ofr20071047SRP009","displayToPublicDate":"2007-01-23T13:17:00","publicationYear":"2007","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":"2007-1047-SRP-009","title":"The Cosmonaut Sea Wedge","docAbstract":"A set of multi-channel seismic profiles (~15000 km) acquired by Russia, Norway and Australia has been used \nto investigate the depositional evolution of the Cosmonaut Sea margin of East Antarctica. We recognize a regional \nsediment wedge below the upper part of the continental rise. The wedge, herein termed the Cosmonaut Sea Wedge, is \npositioned stratigraphically underneath the inferred glaciomarine section and extends for at least 1200 km along the \ncontinental margin and from 80 to about 250 km seaward or to the north. Lateral variations in the growth pattern of the \nwedge indicate several overlapping depocentres, which at their distal northern end are flanked by elongated mounded \ndrifts and contourite sheets. The internal stratification of the mounded drift deposits suggests that westward flowing \nbottom currents reworked the marginal deposits. The action of these currents together with sea-level changes is \nconsidered to have controlled the growth of the wedge. We interpret the Cosmonaut Sea Wedge as a composite feature \ncomprising several bottom current reworked fan systems.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP009","usgsCitation":"Solli, K., Kuvaas, B., Kristoffersen, Y., Leitchenkov, G., Guseva, J., and Gandyukhin, V., 2007, The Cosmonaut Sea Wedge: U.S. Geological Survey Open-File Report 2007-1047-SRP-009, 4 p., https://doi.org/10.3133/ofr20071047SRP009.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280891,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP009.JPG"},{"id":280890,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp009/of2007-1047srp009.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd76dbe4b0b2908510b2d9","contributors":{"authors":[{"text":"Solli, K.","contributorId":26963,"corporation":false,"usgs":true,"family":"Solli","given":"K.","email":"","affiliations":[],"preferred":false,"id":488142,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kuvaas, B.","contributorId":17130,"corporation":false,"usgs":true,"family":"Kuvaas","given":"B.","email":"","affiliations":[],"preferred":false,"id":488140,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kristoffersen, Y.","contributorId":29986,"corporation":false,"usgs":true,"family":"Kristoffersen","given":"Y.","email":"","affiliations":[],"preferred":false,"id":488143,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leitchenkov, G.","contributorId":11108,"corporation":false,"usgs":true,"family":"Leitchenkov","given":"G.","email":"","affiliations":[],"preferred":false,"id":488139,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Guseva, J.","contributorId":54878,"corporation":false,"usgs":true,"family":"Guseva","given":"J.","email":"","affiliations":[],"preferred":false,"id":488144,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gandyukhin, V.","contributorId":19464,"corporation":false,"usgs":true,"family":"Gandyukhin","given":"V.","affiliations":[],"preferred":false,"id":488141,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70068782,"text":"ofr20071047SRP007 - 2007 - Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny","interactions":[],"lastModifiedDate":"2014-01-13T12:56:23","indexId":"ofr20071047SRP007","displayToPublicDate":"2007-01-23T12:45:00","publicationYear":"2007","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":"2007-1047-SRP-007","title":"Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny","docAbstract":"Recent post-750 Ma continental reconstructions constrain models for East African Orogeny formation and \nalso the scattered remnants of ~640 Ma granulites, whose genesis is controversial. One such Neoproterozoic granulite \nbelt is the Schirmacher Oasis in East Antarctica, isolated from the distinctly younger Pan-African orogen to the south in \nthe central Droning Maud Land. To ascertain the duration of granulite-facies events in these remnants, garnet Sm-Nd \nand monazite and titanite U-Pb IDTIMS geochronology was carried out on a range of metamorphic rocks. Garnet \nformation ages from a websterite enclave and gabbro were 660±48 Ma and 587±9 Ma respectively, and those from Stype granites were 598±4 Ma and 577±4 Ma. Monazites from metapelite and metaquartzite yielded lower intercept UPb ages of 629±3 Ma and 639±5 Ma, respectively. U-Pb titanite age from calcsilicate gneiss was 580±5 Ma. These \nindicate peak metamorphism to have occurred between 640 and 630 Ma, followed by near isobaric cooling to ~580 Ma. \nThough an origin as an exotic terrane from the East African Orogen cannot be discounted, from the present data there is \na greater likelihood that Mesoproterozoic microplate collision between Maud orogen and a northerly Lurio-Nampula \nblock resulted in formation of these granulite belt(s).","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP007","usgsCitation":"Ravikant, V., Laux, J., and Pimentel, M., 2007, Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny: U.S. Geological Survey Open-File Report 2007-1047-SRP-007, 5 p., https://doi.org/10.3133/ofr20071047SRP007.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280882,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP007.JPG"},{"id":280881,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp007/of2007-1047srp007.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7312e4b0b29085108b87","contributors":{"authors":[{"text":"Ravikant, V.","contributorId":6367,"corporation":false,"usgs":true,"family":"Ravikant","given":"V.","email":"","affiliations":[],"preferred":false,"id":488126,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Laux, J.H.","contributorId":79013,"corporation":false,"usgs":true,"family":"Laux","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":488127,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pimentel, M.M.","contributorId":99460,"corporation":false,"usgs":true,"family":"Pimentel","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":488128,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70059586,"text":"ofr20071047KP05 - 2007 - Landscape evolution of Antarctica","interactions":[],"lastModifiedDate":"2013-12-23T11:51:08","indexId":"ofr20071047KP05","displayToPublicDate":"2007-01-23T11:32:00","publicationYear":"2007","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":"2007-1047-KP-05","title":"Landscape evolution of Antarctica","docAbstract":"The relative roles of fluvial versus glacial processes in shaping the landscape of Antarctica have been debated since the \nexpeditions of Robert Scott and Ernest Shackleton in the \nearly years of the 20th century. Here we build a synthesis of \nAntarctic landscape evolution based on the geomorphology of \npassive continental margins and former northern mid-latitude \nPleistocene ice sheets. What makes Antarctica so interesting \nis that the terrestrial landscape retains elements of a record of \nchange that extends back to the Oligocene. Thus there is the \npotential to link conditions on land with those in the oceans \nand atmosphere as the world switched from a greenhouse \nto a glacial world and the Antarctic ice sheet evolved to its \npresent state. In common with other continental fragments of \nGondwana there is a fluvial signature to the landscape in the \nform of the coastal erosion surfaces and escarpments, incised \nriver valleys, and a continent-wide network of river basins. \nA selective superimposed glacial signature reflects the presence or absence of ice at the pressure melting point. Earliest \ncontinental-scale ice sheets formed around 34 Ma, growing \nfrom local ice caps centered on mountain massifs, and featured phases of ice-sheet expansion and contraction. These \nice masses were most likely cold-based over uplands and \nwarm-based across lowlands and near their margins. For 20 \nmillion years ice sheets fluctuated on Croll-Milankovitch frequencies. At ~14 Ma the ice sheet expanded to its maximum \nand deepened a preexisting radial array of troughs selectively \nthrough the coastal mountains and eroded the continental\nshelf before retreating to its present dimensions at ~13.5 Ma. \nSubsequent changes in ice extent have been forced mainly by \nsea-level change. Weathering rates of exposed bedrock have \nbeen remarkably slow at high elevations around the margin of \nEast Antarctica under the hyperarid polar climate of the last \n~13.5 Ma, offering potential for a long quantitative record \nof ice-sheet evolution with techniques such as cosmogenic \nisotope analysis","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"The National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP05","usgsCitation":"Jamieson, S., and Sugden, D., 2007, Landscape evolution of Antarctica: U.S. Geological Survey Open-File Report 2007-1047-KP-05, 16 p., https://doi.org/10.3133/ofr20071047KP05.","productDescription":"16 p.","startPage":"39","endPage":"54","costCenters":[],"links":[{"id":280509,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP05.JPG"},{"id":280508,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/kp/kp05/of2007-1047kp05.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6402e4b0b290850ff2ef","contributors":{"authors":[{"text":"Jamieson, S.S.R.","contributorId":9953,"corporation":false,"usgs":true,"family":"Jamieson","given":"S.S.R.","email":"","affiliations":[],"preferred":false,"id":487703,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sugden, D.E.","contributorId":80072,"corporation":false,"usgs":true,"family":"Sugden","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":487704,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":79587,"text":"ofr20061390 - 2007 - Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada","interactions":[{"subject":{"id":79587,"text":"ofr20061390 - 2007 - Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada","indexId":"ofr20061390","publicationYear":"2007","noYear":false,"title":"Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada"},"predicate":"SUPERSEDED_BY","object":{"id":80141,"text":"sir20075062 - 2007 - Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill-Hole Data in Yucca Flat, Nye County, Nevada","indexId":"sir20075062","publicationYear":"2007","noYear":false,"title":"Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill-Hole Data in Yucca Flat, Nye County, Nevada"},"id":1}],"supersededBy":{"id":80141,"text":"sir20075062 - 2007 - Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill-Hole Data in Yucca Flat, Nye County, Nevada","indexId":"sir20075062","publicationYear":"2007","noYear":false,"title":"Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill-Hole Data in Yucca Flat, Nye County, Nevada"},"lastModifiedDate":"2012-02-02T00:14:12","indexId":"ofr20061390","displayToPublicDate":"2007-01-20T00:00:00","publicationYear":"2007","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":"2006-1390","title":"Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada","docAbstract":"Yucca Flat is a topographic and structural basin in the northeastern part of the Nevada Test Site (NTS) in Nye County, Nevada, that has been the site of numerous underground nuclear tests; many of these tests occurred within the young alluvial basin-fill deposits. The migration of radionuclides to the Paleozoic carbonate aquifer involves passage through this thick, heterogeneous section of Tertiary and Quaternary rock. An understanding of the lateral and vertical changes in the material properties of young alluvial basin-fill deposits will aid in the further development of the hydrogeologic framework and the delineation of hydrostratigraphic units and hydraulic properties required for simulating ground-water flow in the Yucca Flat area. This report by the U.S. Geological Survey, in cooperation with the U.S. Department of Energy, presents data and interpretation regarding the three-dimensional variability of the shallow alluvial aquifers in areas of testing at Yucca Flat, data that are potentially useful in the understanding of the subsurface flow system. This report includes a summary and interpretation of alluvial basin-fill stratigraphy in the Yucca Flat area based on drill hole data from 285 selected drill holes. Spatial variations in lithology and grain size of the Neogene basin-fill sediments can be established when data from numerous drill holes are considered together. Lithologic variations are related to different depositional environments within the basin including alluvial fan, channel, basin axis, and playa deposits.\r\n","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr20061390","collaboration":"Prepared in cooperation with the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office under Interagency Agreement DE-AI52-01NV13944","usgsCitation":"Sweetkind, D., and Drake, R.M., 2007, Geologic Characterization of Young Alluvial Basin-Fill Deposits from Drill Hole Data in Yucca Flat, Nye County, Nevada (Superseded by SIR 2007-5062): U.S. Geological Survey Open-File Report 2006-1390, iv, 17 p., https://doi.org/10.3133/ofr20061390.","productDescription":"iv, 17 p.","numberOfPages":"21","onlineOnly":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":190899,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9206,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1390/","linkFileType":{"id":5,"text":"html"}}],"edition":"Superseded by SIR 2007-5062","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a870d","contributors":{"authors":[{"text":"Sweetkind, Donald S.","contributorId":18732,"corporation":false,"usgs":true,"family":"Sweetkind","given":"Donald S.","affiliations":[],"preferred":false,"id":290303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Drake, Ronald M. II 0000-0002-1770-4667 rmdrake@usgs.gov","orcid":"https://orcid.org/0000-0002-1770-4667","contributorId":1353,"corporation":false,"usgs":true,"family":"Drake","given":"Ronald","suffix":"II","email":"rmdrake@usgs.gov","middleInitial":"M.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":290302,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70074344,"text":"ofr20071047SRP022 - 2007 - Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure","interactions":[],"lastModifiedDate":"2014-01-29T11:50:41","indexId":"ofr20071047SRP022","displayToPublicDate":"2007-01-18T11:14:00","publicationYear":"2007","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":"2007-1047-SRP-022","title":"Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure","docAbstract":"The Transantarctic Mountains demarcate the boundary between the highly extended lithosphere of the West\nAntarctic Rift System and the Proterozoic East Antarctic Craton. Although the last stage of relief development was in\nthe Eocene, the TAM retain peak elevations in excess of 4500 m. This combination of old age and high relief are\ndifficult to reconcile, and the mechanism(s) responsible for uplift and support of this mountain range remain elusive and\ncontroversial. Recent seismic studies provide key constraints on the crustal structure. Here we constrain the lithospheric\nstructure across this boundary by forward modeling of the gravity based on a density structure that reflects the thermal\nstructure. Our results show that the observed very-long wavelength (>500km) gravity anomaly can be modeled by a\nWest Antarctic lithosphere ~60 km thick, and an East Antarctic lithosphere ~250 km thick. In addition, the gravity\nanomaly associated with the TAM can be modeled by including the thermal effects of heat producing elements\nconcentrated in the crust.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP022","usgsCitation":"Huerta, A.D., 2007, Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure: U.S. Geological Survey Open-File Report 2007-1047-SRP-022, 4 p., https://doi.org/10.3133/ofr20071047SRP022.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281653,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP022.png"},{"id":281652,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp022/of2007-1047srp022.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd64cfe4b0b290850ffb0d","contributors":{"authors":[{"text":"Huerta, Audrey D.","contributorId":72300,"corporation":false,"usgs":true,"family":"Huerta","given":"Audrey","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":489536,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70059624,"text":"ofr20071047KP07 - 2007 - Late Cenozoic Climate History of the Ross Embayment from the AND-1B Drill Hole: Culmination of Three Decades of Antarctic Margin Drilling","interactions":[],"lastModifiedDate":"2013-12-23T16:24:22","indexId":"ofr20071047KP07","displayToPublicDate":"2007-01-17T16:00:00","publicationYear":"2007","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":"2007-1047-KP-07","title":"Late Cenozoic Climate History of the Ross Embayment from the AND-1B Drill Hole: Culmination of Three Decades of Antarctic Margin Drilling","docAbstract":"Because of the paucity of exposed rock, the direct physical \nrecord of Antarctic Cenozoic glacial history has become \nknown only recently and then largely from offshore shelf \nbasins through seismic surveys and drilling. The number \nof holes on the continental shelf has been small and largely \nconfined to three areas (McMurdo Sound, Prydz Bay, and \nAntarctic Peninsula), but even in McMurdo Sound, where \nOligocene and early Miocene strata are well cored, the late Cenozoic is poorly known and dated. The latest Antarctic \ngeological drilling program, ANDRILL, successfully cored \na 1285-m-long record of climate history spanning the last 13 \nm.y. from subsea-floor sediment beneath the McMurdo Ice \nShelf (MIS), using drilling systems specially developed for \noperating through ice shelves. The cores provide the most \ncomplete Antarctic record to date of ice-sheet and climate \nfluctuations for this period of Earth’s history. The >60 cycles \nof advance and retreat of the grounded ice margin preserved \nin the AND-1B record the evolution of the Antarctic ice sheet \nsince a profound global cooling step in deep-sea oxygen \nisotope records ~14 m.y.a. A feature of particular interest is a \n~90-m-thick interval of diatomite deposited during the warm \nPliocene and representing an extended period (~200,000 \nyears) of locally open water, high phytoplankton productivity, and retreat of the glaciers on land.","language":"English","publisher":"National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP07","usgsCitation":"Naish, T., Powell, R., Barrett, P.J., Levy, R., Henrys, S., Wilson, G., Krissek, L., Niessen, F., Pompilio, M., Ross, J., Scherer, R., Talarico, F., Pyne, A., and ANDRILL-MIS Science team, 2007, Late Cenozoic Climate History of the Ross Embayment from the AND-1B Drill Hole: Culmination of Three Decades of Antarctic Margin Drilling: U.S. Geological Survey Open-File Report 2007-1047-KP-07, 12 p., https://doi.org/10.3133/ofr20071047KP07.","productDescription":"12 p.","startPage":"71","endPage":"82","numberOfPages":"12","costCenters":[],"links":[{"id":280529,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP07.JPG"},{"id":280528,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/kp/kp07/of2007-1047kp07.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6422e4b0b290850ff42b","contributors":{"authors":[{"text":"Naish, T.R.","contributorId":9168,"corporation":false,"usgs":true,"family":"Naish","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":487741,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, R.D.","contributorId":74015,"corporation":false,"usgs":true,"family":"Powell","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":487749,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barrett, P. J.","contributorId":96347,"corporation":false,"usgs":false,"family":"Barrett","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":487752,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Levy, R.H.","contributorId":100278,"corporation":false,"usgs":true,"family":"Levy","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":487753,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Henrys, S.","contributorId":27632,"corporation":false,"usgs":true,"family":"Henrys","given":"S.","email":"","affiliations":[],"preferred":false,"id":487744,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wilson, G.S.","contributorId":16603,"corporation":false,"usgs":true,"family":"Wilson","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":487743,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Krissek, L.A.","contributorId":63712,"corporation":false,"usgs":true,"family":"Krissek","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":487748,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Niessen, F.","contributorId":56063,"corporation":false,"usgs":true,"family":"Niessen","given":"F.","email":"","affiliations":[],"preferred":false,"id":487745,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Pompilio, M.","contributorId":61261,"corporation":false,"usgs":true,"family":"Pompilio","given":"M.","email":"","affiliations":[],"preferred":false,"id":487746,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Ross, J.","contributorId":9076,"corporation":false,"usgs":true,"family":"Ross","given":"J.","email":"","affiliations":[],"preferred":false,"id":487740,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Scherer, R.","contributorId":10752,"corporation":false,"usgs":true,"family":"Scherer","given":"R.","email":"","affiliations":[],"preferred":false,"id":487742,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Talarico, F.","contributorId":84585,"corporation":false,"usgs":true,"family":"Talarico","given":"F.","email":"","affiliations":[],"preferred":false,"id":487751,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Pyne, A.","contributorId":61332,"corporation":false,"usgs":true,"family":"Pyne","given":"A.","email":"","affiliations":[],"preferred":false,"id":487747,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"ANDRILL-MIS Science team","contributorId":128178,"corporation":true,"usgs":false,"organization":"ANDRILL-MIS Science team","id":535615,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}}
,{"id":70065939,"text":"ofr20071047SRP001 - 2007 - Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS)","interactions":[],"lastModifiedDate":"2014-01-07T14:09:02","indexId":"ofr20071047SRP001","displayToPublicDate":"2007-01-17T13:44:00","publicationYear":"2007","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":"2007-1047-SRP-001","title":"Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS)","docAbstract":"The Antarctic Seismic Data Library System for Cooperative Research (SDLS) has served for the past 16 \nyears under the auspices of the Antarctic Treaty (ATCM Recommendation XVI-12) as a role model for collaboration \nand equitable sharing of Antarctic multichannel seismic reflection (MCS) data for geoscience studies. During this \nperiod, collaboration in MCS studies has advanced deciphering the seismic stratigraphy and structure of Antarctica’s \ncontinental margin more rapidly than previously. MCS data compilations provided the geologic framework for scientific \ndrilling at several Antarctic locations and for high-resolution seismic and sampling studies to decipher Cenozoic \ndepositional paleoenvironments. The SDLS successes come from cooperation of National Antarctic Programs and \nindividual investigators in “on-time” submissions of their MCS data. Most do, but some do not. The SDLS \ncommunity has an International Polar Year (IPY) goal of all overdue MCS data being sent to the SDLS by end of IPY. \nThe community science objective is to compile all Antarctic MCS data to derive a unified seismic stratigraphy for the \ncontinental margin – a stratigraphy to be used with drilling data to derive Cenozoic circum-Antarctic paleobathymetry \nmaps and local-to-regional scale paleoenvironmental histories.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP001","usgsCitation":"Wardell, N., Childs, J., and Cooper, A.K., 2007, Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS): U.S. Geological Survey Open-File Report 2007-1047-SRP-001, Text: 4 p.; Plate: 1 PDF poster, https://doi.org/10.3133/ofr20071047SRP001.","productDescription":"Text: 4 p.; Plate: 1 PDF poster","additionalOnlineFiles":"Y","costCenters":[],"links":[{"id":280663,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP001.JPG"},{"id":280660,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp001/of2007-1047srp001_text.pdf"},{"id":280659,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp001/of2007-1047srp001_plate1.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4b3ae4b0b290850f03ed","contributors":{"authors":[{"text":"Wardell, N.","contributorId":71093,"corporation":false,"usgs":true,"family":"Wardell","given":"N.","email":"","affiliations":[],"preferred":false,"id":487937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Childs, J.R.","contributorId":63011,"corporation":false,"usgs":true,"family":"Childs","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":487936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cooper, A. K.","contributorId":50149,"corporation":false,"usgs":true,"family":"Cooper","given":"A.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":487935,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70074265,"text":"ofr20071047SRP019 - 2007 - Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica","interactions":[],"lastModifiedDate":"2014-01-29T08:24:34","indexId":"ofr20071047SRP019","displayToPublicDate":"2007-01-17T11:18:00","publicationYear":"2007","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":"2007-1047-SRP-019","title":"Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica","docAbstract":"Site NBP0602A-9, drilled during the SHALDRIL II cruise of the RV/IB Nathaniel B. Palmer, includes two \nholes located in the northern James Ross Basin in the western Weddell Sea, very close to the eastern margin of the \nAntarctic Peninsula. Sediment from both holes consists of very dark grey, pebbly, sandy mud, grading to very dark \ngreenish grey, pebbly, silty mud in the lower 2.5 m of the second hole. In addition to abundant pebbles found \nthroughout the cores, both holes contain numerous sedimentary clasts. Biostratigraphic analysis of diatom assemblages \nfrom the glaciomarine muds yields rare to few, poorly preserved diatoms. The mixed assemblage consists mostly of \nextant species, but also includes reworked taxa that range to the Miocene. The absence of Rouxia spp., however, \nsuggests the sediment is late Pleistocene in age. The sedimentary clasts, on the other hand, are nearly barren of diatoms, \nbut contain rare, moderately to well-preserved calcareous nannofossils. The clasts contain three distinct assemblages. \nTwo clasts are assigned an early Maastrichtian age based on the presence of Biscutum magnum and Nephrolithus \ncorystus, while one clast yields a late Maastrichtian age based on the presence of Nephrolithus frequens. These samples \nalso contain other characteristic Late Cretaceous species, including Biscutum notaculum, Cribrosphaerella daniae, \nEiffellithus gorkae, Kamptnerius magnificus, and Prediscosphaera bukryi. Two samples yield an early Paleocene \nassemblage dominated by Hornibrookina teuriensis. The Maastrichtian assemblages are similar to those found in the \nLópez de Bertodano Formation on Seymour and Snow Hill Islands, making it the likely source area for the Cretaceous \nclast material. Although no calcareous nannofossils have been reported from Paleocene formations on these islands, the \noccurrence of calcareous foraminifers suggests other calcareous plankton may be present; thus the Paleocene clasts \nlikely also originated from the Seymour Island area.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP019","usgsCitation":"Kulhanek, D., 2007, Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-019, 5 p., https://doi.org/10.3133/ofr20071047SRP019.","productDescription":"5 p.","costCenters":[],"links":[{"id":281634,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP019.png"},{"id":281605,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp019/of2007-1047srp019.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6a76e4b0b2908510344f","contributors":{"authors":[{"text":"Kulhanek, D.K.","contributorId":66172,"corporation":false,"usgs":true,"family":"Kulhanek","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":489461,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70059156,"text":"ofr20071047KP04 - 2007 - Antarctica‘s continent-ocean transitions: consequences for tectonic reconstructions","interactions":[],"lastModifiedDate":"2013-12-18T15:45:40","indexId":"ofr20071047KP04","displayToPublicDate":"2007-01-16T15:10:00","publicationYear":"2007","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":"2007-1047-KP-04","title":"Antarctica‘s continent-ocean transitions: consequences for tectonic reconstructions","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP04","usgsCitation":"Gohl, K., 2007, Antarctica‘s continent-ocean transitions: consequences for tectonic reconstructions: U.S. Geological Survey Open-File Report 2007-1047-KP-04, 10 p., https://doi.org/10.3133/ofr20071047KP04.","productDescription":"10 p.","startPage":"29","endPage":"38","numberOfPages":"10","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280416,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP04.png"},{"id":280415,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/kp/kp04/of2007-1047kp04.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4d74e4b0b290850f1834","contributors":{"authors":[{"text":"Gohl, K.","contributorId":53285,"corporation":false,"usgs":true,"family":"Gohl","given":"K.","email":"","affiliations":[],"preferred":false,"id":487508,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70059150,"text":"ofr20071047KP03 - 2007 - 100 Million Years of Antarctic Climate Evolution: Evidence from Fossil Plants","interactions":[],"lastModifiedDate":"2013-12-18T14:45:45","indexId":"ofr20071047KP03","displayToPublicDate":"2007-01-16T13:56:00","publicationYear":"2007","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":"2007-1047-KP-03","title":"100 Million Years of Antarctic Climate Evolution: Evidence from Fossil Plants","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP03","usgsCitation":"Francis, J., Ashworth, A., Cantrill, D., Crame, J., Howe, J., Stephens, J., Tosolini, A., and Thorn, V., 2007, 100 Million Years of Antarctic Climate Evolution: Evidence from Fossil Plants: U.S. Geological Survey Open-File Report 2007-1047-KP-03, 10 p., https://doi.org/10.3133/ofr20071047KP03.","productDescription":"10 p.","startPage":"19","endPage":"28","numberOfPages":"10","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280414,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP03.png"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4907e4b0b290850eed3b","contributors":{"authors":[{"text":"Francis, J.E.","contributorId":61249,"corporation":false,"usgs":true,"family":"Francis","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":487505,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ashworth, A.","contributorId":7988,"corporation":false,"usgs":true,"family":"Ashworth","given":"A.","email":"","affiliations":[],"preferred":false,"id":487501,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cantrill, D.J.","contributorId":41321,"corporation":false,"usgs":true,"family":"Cantrill","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":487502,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Crame, J.A.","contributorId":50438,"corporation":false,"usgs":true,"family":"Crame","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":487504,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Howe, J.","contributorId":98679,"corporation":false,"usgs":true,"family":"Howe","given":"J.","email":"","affiliations":[],"preferred":false,"id":487507,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stephens, J.","contributorId":46403,"corporation":false,"usgs":true,"family":"Stephens","given":"J.","affiliations":[],"preferred":false,"id":487503,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Tosolini, A.-M.","contributorId":6752,"corporation":false,"usgs":true,"family":"Tosolini","given":"A.-M.","email":"","affiliations":[],"preferred":false,"id":487500,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Thorn, V.","contributorId":75428,"corporation":false,"usgs":true,"family":"Thorn","given":"V.","email":"","affiliations":[],"preferred":false,"id":487506,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70059145,"text":"ofr20071047KP02 - 2007 - Antarctica Earth System Science in the International Polar Year 2007-2008","interactions":[],"lastModifiedDate":"2013-12-18T13:50:30","indexId":"ofr20071047KP02","displayToPublicDate":"2007-01-16T13:20:00","publicationYear":"2007","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":"2007-1047-KP-02","title":"Antarctica Earth System Science in the International Polar Year 2007-2008","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP02","usgsCitation":"Bell, R., 2007, Antarctica Earth System Science in the International Polar Year 2007-2008: U.S. Geological Survey Open-File Report 2007-1047-KP-02, 12 p, https://doi.org/10.3133/ofr20071047KP02.","productDescription":"12 p","startPage":"7","endPage":"18","numberOfPages":"12","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280412,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/kp/kp02/of2007-1047kp02.pdf"},{"id":280413,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP02.png"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4d6ee4b0b290850f182e","contributors":{"authors":[{"text":"Bell, R.E.","contributorId":70010,"corporation":false,"usgs":true,"family":"Bell","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":487494,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70068783,"text":"ofr20071047SRP008 - 2007 - IGY to IPY, the U.S. Antarctic oversnow and airborne geophysical-glaciological research program from 1957 to 1964 from the view of a young graduate student","interactions":[],"lastModifiedDate":"2018-03-15T14:17:37","indexId":"ofr20071047SRP008","displayToPublicDate":"2007-01-16T13:00:00","publicationYear":"2007","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":"2007-1047-SRP-008","title":"IGY to IPY, the U.S. Antarctic oversnow and airborne geophysical-glaciological research program from 1957 to 1964 from the view of a young graduate student","docAbstract":"When 12 countries established scientific stations in Antarctica for the 1957-58 (IGY), the Cold War was at \nits height, seven countries had made claims in Antarctica, and the Antarctic Treaty was in the future. The only major \nfield project of the U.S. IGY Antarctic program was series of oversnow traverses, starting in 1957, making seismic \nreflection ice soundings (and other geophysical measurements) and glaciological studies. The U.S.S.R. and France made \nsimilar traverses coordinated through the IGY. Although geology and topographic mapping were not part of the IGY \nprogram because of the claims issue and the possibility of mineral resources, the oversnow traverse parties did geologic \nwork, during which unknown mountains were discovered. The oversnow traverses continued through 1966 and resulted \nin an excellent first approximation of the snow surface elevation, ice thickness and bed topography of Antarctica, as \nwell as the mean annual temperature of that era and snow accumulation.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP008","usgsCitation":"Behrendt, J.C., 2007, IGY to IPY, the U.S. Antarctic oversnow and airborne geophysical-glaciological research program from 1957 to 1964 from the view of a young graduate student: U.S. Geological Survey Open-File Report 2007-1047-SRP-008, 4 p., https://doi.org/10.3133/ofr20071047SRP008.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280885,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP008.JPG"},{"id":280884,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp008/of2007-1047srp008.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd61dfe4b0b290850fdcf1","contributors":{"authors":[{"text":"Behrendt, John C. jbehrendt@usgs.gov","contributorId":25945,"corporation":false,"usgs":true,"family":"Behrendt","given":"John","email":"jbehrendt@usgs.gov","middleInitial":"C.","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true},{"id":213,"text":"Crustal Imaging and Characterization Team","active":false,"usgs":true}],"preferred":false,"id":488129,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70068750,"text":"ofr20071047SRP004 - 2007 - The Ellsworth Mountains: critical and enduringly enigmatic","interactions":[],"lastModifiedDate":"2014-01-13T11:48:59","indexId":"ofr20071047SRP004","displayToPublicDate":"2007-01-16T11:22:00","publicationYear":"2007","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":"2007-1047-SRP-004","title":"The Ellsworth Mountains: critical and enduringly enigmatic","docAbstract":"The Ellsworth Mountains, first mapped under the leadership of Campbell Craddock, pose critical geological \nenigmas, solved and unsolved. The isolation of the mountains, their abrupt structural terminations and Paleozoic \nstratigraphic affinities are explained by rotation from the cratonic margin during Gondwanaland breakup. The \nmechanism remains obscure. The absence of intense folding associated with the Cambro-Ordovician Ross orogeny can \nbe ascribed to local extension along a subducting margin. Yet tantalizing questions regarding possible Precambrian \nconnections to Laurentia remain, and the cause of the post-Permian Gondwanide folding is controversial.\nThe elevation (~5000m) is high for an early Mesozoic fold belt. Thermal uplift could have been initiated during \nJurassic-Cretaceous block rotation and Weddell Sea opening and continued into the Cenozoic. The history of glaciation \nprovides input for models of ice loading and unloading. Measurements of present-day uplift test these models and help \nassess change in the mass of the ice sheet and hence in global sea level.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP004","usgsCitation":"Dalziel, I., 2007, The Ellsworth Mountains: critical and enduringly enigmatic: U.S. Geological Survey Open-File Report 2007-1047-SRP-004, 5 p., https://doi.org/10.3133/ofr20071047SRP004.","productDescription":"5 p.","costCenters":[],"links":[{"id":280869,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP004.JPG"},{"id":280867,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp004/of2007-1047srp004.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd76e8e4b0b2908510b33d","contributors":{"authors":[{"text":"Dalziel, I.W.D.","contributorId":44070,"corporation":false,"usgs":true,"family":"Dalziel","given":"I.W.D.","email":"","affiliations":[],"preferred":false,"id":488110,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
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