Broad continental shelf regions such as the New York Bight are the product of a complex geologic history and dynamic oceanographic processes, dominated by the Holocene marine transgression (>100 m sea-level rise) following the end of the last Pleistocene ice advance ~ 20,000 years ago. The area of the U.S. Exclusive Economic Zone (U.S. EEZ) territory, extending 200 nautical miles seaward from the coast, is larger than the continental U.S. and contains submerged landforms that provide a variety of natural functions and societal benefits, such as: critical habitats for fisheries, ship navigation and homeland security, and engineering activities (i.e. oil and gas platforms, pipeline and cable routes, potential wind-energy-generation sites).
\nSome parts of the continental margins, particularly inner-continental shelf regions, also contain unconsolidated hard-mineral deposits such as sand and gravel that are regarded as potential aggregate resources to meet or augment needs not met by onshore deposits (Williams, 1992). The present distribution of surficial sediment off the northeastern United States is shaped from the deposits left by the last glaciation and reflects the cumulative effects of sediment erosion, transport, sorting, and deposition by storm and tidal processes during the Holocene rise in sea level. As a result, the sediments on the sea floor represent both an historical record of former conditions and a guide to possible future sedimentary environments.
\nThe U.S. Geological Survey (USGS) through the Coastal and Marine Geology Program, in cooperation with the University of Colorado and other partners, has compiled extant sediment character and textural data as well as other geologic information on the sea floor from all regions around the U.S. into the usSEABED data system (Reid and others, 2005; Buczkowski and others, 2006; Reid and others, 2006). The usSEABED system, which contains information on sediment grain size and lithology for more than 340,500 stations within the U.S. EEZ. has been developed and populated with data as part of the USGS Marine Aggregate Resources and Processes and the National Benthic Habitats projects in order to provide the base-line data needed to update the current maps of offshore surficial geologic character and sediment distribution. The maps are also used to characterize benthic sea floor environments important for marine ecosystems.
\nU.S. Geological Survey, Data Series 118 (Reid and others, 2005), of the usSEABED data release series, represents the combined efforts of the USGS and several other government agencies to provide a unified resource for accessing and preserving records of U.S. east coast sea floor geologic information and sediment texture data.
\nFor this present report, we have chosen to focus on the New York-New Jersey region, an area that has been intensely studied by the USGS for many years to address many complex issues.
\nThis report illustrates the uses of the usSEABED database for GIS applications, while offering additional insight into the resources and data available from the USGS and its collaborative institutions.
\nThis report is based on data contained in U.S. Geological Survey Data Series 118 (Reid and others, 2005) and shows an assortment of example GIS products that are possible using usSEABED. All data are intended to be GIS-ready and should not require any additional cleanup, formatting, or renaming of fields in order to use the data in a Geographic Information System. This project employs the Environmental Systems Research Institute's (ESRI) ArcView™ software. Many of these maps were made as part of the ongoing USGS study to assess marine aggregate resources offshore New York and New Jersey, but these maps can serve many other purposes. The marine science community, educators, students and others are encouraged to use these data to generate GIS products for their own purposes.
\nThe objectives of the Marine Aggregate Resources and Processes project are to produce a series of new geologic maps and reports of the sea floor that will provide scientific insights into the character and geologic development of U.S. continental margins and to use these maps and information to assess the potential availability of offshore sand and gravel resources. The mapping and aggregate resource assessments are being conducted on a national scale using the usSEABED data base as described in Williams and others (2003). Potential uses for these data include: (1) defining the geological variability of the sea floor in relation to benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and benthic habitats; (3) locating aggregate resources for beach nourishment and industrial applications; and (4) providing a detailed geospatial framework for future marine science research, monitoring, and management activities. The initial assessments are in progress for the New York Bight and Louisiana offshore areas.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061046","usgsCitation":"Williams, S.J., Arsenault, M.A., Poppe, L., Reid, J.A., Reid, J.M., and Jenkins, C.J., 2007, Surficial sediment character of the New York-New Jersey offshore continental shelf region: A GIS compilation: U.S. Geological Survey Open-File Report 2006-1046, 74 p., https://doi.org/10.3133/ofr20061046.","productDescription":"74 p.","numberOfPages":"74","additionalOnlineFiles":"Y","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":195536,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20061046.PNG"},{"id":412051,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_80666.htm","linkFileType":{"id":5,"text":"html"}},{"id":295126,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2006/1046/htmldocs/images/pdf/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":9246,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1046/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"New Jersey, New York","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -75.48869077222176,\n 41.37104207310469\n ],\n [\n -75.48869077222176,\n 38.85910355852292\n ],\n [\n -71.10831522330642,\n 38.85910355852292\n ],\n [\n -71.10831522330642,\n 41.37104207310469\n ],\n [\n -75.48869077222176,\n 41.37104207310469\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae3e4b07f02db6893b6","contributors":{"authors":[{"text":"Williams, S. Jeffress 0000-0002-1326-7420 jwilliams@usgs.gov","orcid":"https://orcid.org/0000-0002-1326-7420","contributorId":2063,"corporation":false,"usgs":true,"family":"Williams","given":"S.","email":"jwilliams@usgs.gov","middleInitial":"Jeffress","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":290393,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arsenault, Matthew A.","contributorId":22872,"corporation":false,"usgs":true,"family":"Arsenault","given":"Matthew","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":290397,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Poppe, Lawrence J. lpoppe@usgs.gov","contributorId":2149,"corporation":false,"usgs":true,"family":"Poppe","given":"Lawrence J.","email":"lpoppe@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":290394,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reid, Jane A. 0000-0003-1771-3894 jareid@usgs.gov","orcid":"https://orcid.org/0000-0003-1771-3894","contributorId":2826,"corporation":false,"usgs":true,"family":"Reid","given":"Jane","email":"jareid@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":290395,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reid, Jamey M.","contributorId":68386,"corporation":false,"usgs":true,"family":"Reid","given":"Jamey","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":290398,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jenkins, Chris J.","contributorId":14066,"corporation":false,"usgs":false,"family":"Jenkins","given":"Chris","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":290396,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":79618,"text":"ofr20071029 - 2007 - Landsat ETM+ False-Color Image Mosaics of Afghanistan","interactions":[],"lastModifiedDate":"2012-02-02T00:14:19","indexId":"ofr20071029","displayToPublicDate":"2007-02-08T00:00:00","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":"2007-1029","title":"Landsat ETM+ False-Color Image Mosaics of Afghanistan","docAbstract":"In 2005, the U.S. Agency for International Development and the U.S. Trade and Development Agency contracted with the U.S. Geological Survey to perform assessments of the natural resources within Afghanistan. The assessments concentrate on the resources that are related to the economic development of that country. Therefore, assessments were initiated in oil and gas, coal, mineral resources, water resources, and earthquake hazards. All of these assessments require geologic, structural, and topographic information throughout the country at a finer scale and better accuracy than that provided by the existing maps, which were published in the 1970's by the Russians and Germans. The very rugged terrain in Afghanistan, the large scale of these assessments, and the terrorist threat in Afghanistan indicated that the best approach to provide the preliminary assessments was to use remotely sensed, satellite image data, although this may also apply to subsequent phases of the assessments. Therefore, the first step in the assessment process was to produce satellite image mosaics of Afghanistan that would be useful for these assessments. This report discusses the production of the Landsat false-color image database produced for these assessments, which was produced from the calibrated Landsat ETM+ image mosaics described by Davis (2006).","language":"ENGLISH","doi":"10.3133/ofr20071029","usgsCitation":"Davis, P.A., 2007, Landsat ETM+ False-Color Image Mosaics of Afghanistan (Version 1.0): U.S. Geological Survey Open-File Report 2007-1029, 22 p., https://doi.org/10.3133/ofr20071029.","productDescription":"22 p.","numberOfPages":"22","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":194640,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9243,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1029/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6adee4","contributors":{"authors":[{"text":"Davis, Philip A. pdavis@usgs.gov","contributorId":692,"corporation":false,"usgs":true,"family":"Davis","given":"Philip","email":"pdavis@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":290390,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":79616,"text":"ofr20071011 - 2007 - Circulation and physical processes within the San Gabriel River Estuary during summer 2005","interactions":[],"lastModifiedDate":"2014-09-11T13:58:43","indexId":"ofr20071011","displayToPublicDate":"2007-02-07T00:00:00","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":"2007-1011","title":"Circulation and physical processes within the San Gabriel River Estuary during summer 2005","docAbstract":"The Southern California Coastal Water Research Project (SCCWRP) is developing a hydrodynamic model of the SGR estuary, which is part of the comprehensive water-quality model of the SGR estuary and watershed investigated by SCCWRP and other local agencies. The hydrodynamic model will help understanding of 1) the exchange processes between the estuary and coastal ocean; 2) the circulation patterns in the estuary; 3) upstream natural runoff and the cooling discharge from PGS.
\nLike all models, the SGR hydrodynamic model is only useful after it is fully calibrated and validated. In May 2005, SCCWRP requested the assistance of the U.S. geological Survey (USGS) Coastal and Marine Geology team (CMG) in collecting data on the hydrodynamic conditions in the estuary during the summer dry season. The summer was chosen for field data collection as this was assumed to be the season with the greatest potential for chronic degraded water quality due to low river flow and high thermal stratification within the estuary (due to both higher average air temperature and PGS output). Water quality can be degraded in winter as well, when higher river discharge events bring large volumes of water from the Los Angeles basin into the estuary. The objectives of this project were to 1) collect hydrodynamic data along the SGR estuary; 2) study exchange processes within the estuary through analysis of the hydrodynamic data; and 3) provide field data for model calibration and validation. As the data only exist for the summer season, the results herein only apply to summer conditions.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071011","usgsCitation":"Rosenberger, K., Xu, J., Stein, E.D., Noble, M.A., and Gartner, A.L., 2007, Circulation and physical processes within the San Gabriel River Estuary during summer 2005 (Version 1.0): U.S. Geological Survey Open-File Report 2007-1011, Report: 48 p.; Appendix: 66 p., https://doi.org/10.3133/ofr20071011.","productDescription":"Report: 48 p.; Appendix: 66 p.","temporalStart":"2005-05-01","temporalEnd":"2005-10-31","costCenters":[{"id":645,"text":"Western Coastal and Marine Geology","active":false,"usgs":true}],"links":[{"id":190748,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071011.PNG"},{"id":9239,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1011/","linkFileType":{"id":5,"text":"html"}},{"id":293761,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2007/1011/of2007-1011Appendices.pdf"},{"id":293760,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1011/of2007-1011.pdf"}],"country":"United States","state":"California","otherGeospatial":"San Gabriel River Estuary","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -118.25,33.666667 ], [ -118.25,33.75 ], [ -118.0,33.75 ], [ -118.0,33.666667 ], [ -118.25,33.666667 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abce4b07f02db672cb4","contributors":{"authors":[{"text":"Rosenberger, Kurt J.","contributorId":12934,"corporation":false,"usgs":true,"family":"Rosenberger","given":"Kurt J.","affiliations":[],"preferred":false,"id":290386,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xu, Jingping jpx@usgs.gov","contributorId":2574,"corporation":false,"usgs":true,"family":"Xu","given":"Jingping","email":"jpx@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":290385,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stein, Eric D.","contributorId":20023,"corporation":false,"usgs":true,"family":"Stein","given":"Eric","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":290387,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Noble, Marlene A. mnoble@usgs.gov","contributorId":1429,"corporation":false,"usgs":true,"family":"Noble","given":"Marlene","email":"mnoble@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":290384,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gartner, Anne L.","contributorId":32620,"corporation":false,"usgs":true,"family":"Gartner","given":"Anne","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":290388,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":79614,"text":"ofr20061387 - 2007 - Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia","interactions":[],"lastModifiedDate":"2020-11-04T15:14:20.775367","indexId":"ofr20061387","displayToPublicDate":"2007-02-04T00:00:00","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":"2006-1387","displayTitle":"Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia","title":"Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia","docAbstract":"The Marbled Murrelet (Brachyramphus marmoratus) is a small, diving seabird inhabiting inshore waters of the Northeastern Pacific Ocean. This species feeds on small, schooling fishes and zooplankton, and nests primarily on the moss-covered branches of large, old-growth conifers, and also, in some parts of its range, on the ground. We reviewed existing information on this species to evaluate its current status in the northern part of its range—Alaska (U.S.) and British Columbia (Canada). Within the southern part of its range (Washington, Oregon, and California, U.S.), the Marbled Murrelet was listed as a threatened species under the Endangered Species Act (ESA) in 1993, and the U.S. Fish and Wildlife Service (USFWS) needed information on the species throughout its range for ESA deliberations. We compiled published information on the conservation status, population biology, foraging ecology, population genetics, population status and trends, demography, marine and nesting habitat characteristics, threats, and ongoing conservation efforts for Marbled Murrelets in Alaska and British Columbia. We conducted a new genetic study using samples from a segment of the range that had not been included in previous studies (Washington, Oregon) and additional nuclear intron and microsatellite markers. We also analyzed available at-sea survey data from several locations for trend. To understand the reasonableness of the empirical trend data, we developed demographic models incorporating stochasticity to discern what population trends were possible by chance. The genetic studies substantially confirmed previous findings on population structure in the Marbled Murrelet. Our present work finds three populations: (1) one comprising birds in the central and western Aleutian Islands; (2) one comprising birds in central California; and (3) one comprising birds within the center of the range from the eastern Aleutians to northern California. Our knowledge of genetic structure within this central population is limited and it requires additional study. Compiling available abundance information, we estimated that in the recent past, Marbled Murrelets in Alaska numbered on the order of 1 million birds. We were unable to generate a similar estimate for historical population size in British Columbia. Using trend information from at-sea surveys spanning a wide geographic range in Alaska, murrelet numbers declined significantly at five of eight trend sites at annual rates of -5.4 to -12.7 percent since the early 1990s. Applying these rates of decline to the historical population estimate, the current murrelet population in Alaska is projected to be on the order of 270,000 birds. This represents an overall population decline of about 70 percent during the past 25 years. In British Columbia, available trend data indicate that murrelet populations there have experienced similar declines. We updated a recent (2002) population estimate for British Columbia, concluding that there are now between 54,000 and 92,000 murrelets in British Columbia. The rates of decline we observed are within, but at the high end of, a range of rates expected by chance. Given that declines were estimated for sites over essentially the entire northern range of the species, there is cause for concern about the species’ status. In their marine habitats, Marbled Murrelets overlap with salmon (Oncorhynchus sp.) gillnetting operations in British Columbia and in Alaska (especially in Prince William Sound and Southeast Alaska), and annual bycatch mortality is likely in the low thousands per year, although bycatch rates are difficult to measure. The species’ inshore distribution coincides with high levels of vessel traffic and makes them especially vulnerable to both chronic oil pollution and to catastrophic spills (e.g., the 1989 Exxon Valdez oil spill [EVOS] in south-central Alaska, which is estimated to have killed 12,000 to 15,000 murrelets). In their forested nesting habitats, Marbled Murrelets have lost about 15 percent of their suitable nesting habitat in Southeast Alaska, and 33 to 49 percent in British Columbia, from industrial-scale logging within the past half century. Increased predation also may be a threat to murrelet populations, related to fragmentation and edge effects from logging and development, and recent population increases observed for some important murrelet predators, including Bald Eagles (Haliaeetus leucocephalus), Common Ravens (Corvus corax), and Steller’s Jays (Cyanocitta stelleri). Nesting habitat losses cannot explain the declines observed in areas where industrial logging has not occurred on a large scale (e.g., Prince William Sound) or at all (Glacier Bay). The apparent change in population size and rates of decline reported for the Marbled Murrelet are large, and we therefore considered alternative explanations and precedents for changes of similar magnitude in other marine wildlife populations in the Northeastern Pacific Ocean. The declines are likely real, and related to combined and cumulative effects from climate-related changes in the marine ecosystem (most likely the 1977 regime shift) and human activities (logging, gillnet bycatch, oil pollution). Much uncertainty about the decline could be alleviated by continuing to repeat boat surveys in Prince William Sound and lower Cook Inlet, and by repeating the boat survey of Southeast Alaska that was conducted in 1994. This survey used a statistically sound design and covered the region that has been and likely remains the center of the species’ abundance. Important questions remain to be addressed about methods for measuring population status and change, adult mortality (major sources, density dependence, seasonal concordance), and the movements of wintering populations.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061387","usgsCitation":"Piatt, J.F., Kuletz, K., Burger, A., Hatch, S.A., Friesen, V.L., Birt, T., Arimitsu, M.L., Drew, G., Harding, A., and Bixler, K., 2007, Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia: U.S. Geological Survey Open-File Report 2006-1387, xiv, 258 p., https://doi.org/10.3133/ofr20061387.","productDescription":"xiv, 258 p.","numberOfPages":"274","costCenters":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":194850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9237,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1387/","linkFileType":{"id":5,"text":"html"}}],"country":"Canada, United States","state":"Alaska, British Columbia","geographicExtents":"{\n \"type\": 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A.M.A.","contributorId":29088,"corporation":false,"usgs":true,"family":"Harding","given":"A.M.A.","email":"","affiliations":[],"preferred":false,"id":290374,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Bixler, K.S.","contributorId":72889,"corporation":false,"usgs":true,"family":"Bixler","given":"K.S.","email":"","affiliations":[],"preferred":false,"id":290378,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":79609,"text":"ofr20061376 - 2007 - Reconnaissance of arsenic concentrations in ground water from bedrock and unconsolidated aquifers in eight northern-tier counties of Pennsylvania","interactions":[],"lastModifiedDate":"2017-07-06T17:36:07","indexId":"ofr20061376","displayToPublicDate":"2007-02-03T00:00:00","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":"2006-1376","title":"Reconnaissance of arsenic concentrations in ground water from bedrock and unconsolidated aquifers in eight northern-tier counties of Pennsylvania","docAbstract":"Samples of ground water for analysis of total-arsenic concentrations were collected in eight counties--Potter, Tioga, Bradford, Susquehanna, Wayne, Pike, Sullivan, and Wyoming--and from eight bedrock formations (bedrock aquifers) and overlying glacial aquifers in the north-central and northeastern parts of Pennsylvania in July 2005 and from March through June 2006. The samples were collected from a total of 143 domestic wells, 2 stock wells, 4 non-community wells, 2 community water-system wells, and 3 domestic springs by well or spring owners using sampling kits provided by the U.S. Geological Survey (USGS). An additional 15 domestic wells were sampled by the USGS for analysis of total arsenic. These 15 samples were collected using the same methods and sampling kits provided to the homeowners.
Samples were analyzed for total arsenic by the Pennsylvania Department of Environmental Protection Laboratory using a minimum reporting level of 4.0 µg/L (micrograms per liter). Arsenic was detected in water from 18 domestic wells in four counties--Bradford (3 wells), Sullivan (1 well), Tioga (13 wells), and Wayne (1 well). The median concentration of total arsenic was less than 4.0 µg/L, and the maximum concentration was 188 µg/L. Water from 10 wells had concentrations of total arsenic greater than the U.S. Environmental Protection Agency Maximum Contaminant Level of 10 µg/L.
Detectable concentrations of total arsenic were measured in water from wells that ranged in depth from 29 to 400 feet, and that were completed in three aquifers--Lock Haven Formation, Catskill Formation, and unconsolidated glacial sediments; no springs had detectable concentrations of total arsenic. Water samples representing the Lock Haven Formation were collected from 60 wells; water from 12 of these wells had detectable concentrations of total arsenic. Water samples representing the Catskill Formation were collected from 57 wells; water from 4 wells had detectable concentrations of total arsenic. Water samples representing the unconsolidated glacial sediments were collected from 17 wells; 2 wells had water with detectable concentrations of total arsenic.
Contingency tables tested for significant differences in total arsenic between aquifers, topographic settings, and well depths. Concentrations of total arsenic were significantly greater (95-percent confidence level) in the Lock Haven Formation than in the other bedrock units. Concentrations of total arsenic also varied significantly by topographic setting. Wells completed in the Lock Haven Formation and located in valleys had significantly greater concentrations of total arsenic than similar wells located on hilltops or slopes. Concentrations of total arsenic did not vary significantly by topographic setting in the Catskill Formation. Concentrations of total arsenic did not vary significantly by well depth for any aquifer.
Iron staining, hydrogen-sulfide odor, or both were common complaints of well owners. Iron staining was a complaint of 44 well owners. Hydrogen-sulfide odor was a complaint of 35 well owners. Fourteen well owners complained of both iron staining and hydrogen sulfide. No correlation to the presence of arsenic in the wells sampled was found with iron staining, hydrogen-sulfide odor, or both.
Water from 8 of the 10 wells that contained concentrations of total arsenic greater than 10 µg/L were sampled by USGS personnel for the determination of concentrations of dissolved arsenic (minimum reporting level 0.3 µg/L) and arsenic species {arsenite [As (III)], arsenate [As (V)], monomethylarsonate (MMA), and dimethylarsinate (DMA)} at the USGS National Water Quality Laboratory. Analytical results from these samples showed a median concentration of 38.7 µg/L dissolved arsenic in water and a maximum of 178 µg/L. As (III) was the most common arsenic species present in the water for seven of the eight wells and was found in water characteristic of reducing environments [pH 8.2 to 9.1, dissolved oxygen 0.06 to 0.29 milligrams per liter (mg/L), and oxidation reduction potential -63 to -203 millivolts (mv)]. As (V) was the dominant arsenic species in water characteristic of an oxidizing environment (pH 4.8, dissolved oxygen 2.15 mg/L, oxidation reduction potential 265 mv). The arsenic species MMA and DMA were detected in the water from two wells. The arsenic species MMA was detected at an estimated concentration of 0.9 µg/L in water from one well; the concentration was less than 1.2 µg/L in water from seven wells. The arsenic species DMA was detected at concentrations of 1.0 and 1.5 µg/L in water from two wells; the concentration was less than 0.6 µg/L in water from six wells. Both wells that contained detectable concentrations of MMA and DMA produced water that was characteristic of reducing environments.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061376","collaboration":"In cooperation with the Pennsylvania Department of Health and the Pennsylvania Department of Environmental Protection","usgsCitation":"Low, D.J., and Galeone, D.G., 2007, Reconnaissance of arsenic concentrations in ground water from bedrock and unconsolidated aquifers in eight northern-tier counties of Pennsylvania: U.S. Geological Survey Open-File Report 2006-1376, iv, 35 p., https://doi.org/10.3133/ofr20061376.","productDescription":"iv, 35 p.","numberOfPages":"39","onlineOnly":"Y","temporalStart":"2005-07-01","temporalEnd":"2006-06-30","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":9232,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1376/","linkFileType":{"id":5,"text":"html"}},{"id":194904,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Pennsylvania","county":" Bradford County, Pike County, Potter County, Sullivan County, Susquehanna County, Tioga County, Wayne County, Wyoming 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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. 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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}]}} ]}