No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02187","usgsCitation":"Duerr, A.D., 2002, Potentiometric surfaces of the intermediate aquifer system, west-central Florida, September 2001: U.S. Geological Survey Open-File Report 2002-187, 1 Plate: 28.47 × 31.54 inches, https://doi.org/10.3133/ofr02187.","productDescription":"1 Plate: 28.47 × 31.54 inches","costCenters":[],"links":[{"id":60879,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2002/0187/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":163259,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":407728,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51828.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -82.8222,\n 26.475\n ],\n [\n -81.1583,\n 26.475\n ],\n [\n -81.1583,\n 28.25\n ],\n [\n -82.8222,\n 28.25\n ],\n [\n -82.8222,\n 26.475\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad3e4b07f02db6821f9","contributors":{"authors":[{"text":"Duerr, A. D.","contributorId":29821,"corporation":false,"usgs":true,"family":"Duerr","given":"A.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":209672,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32982,"text":"wri024055 - 2002 - Evapotranspiration from selected fallowed agricultural fields on the Tule Lake National Wildlife Refuge, California, during May to October 2000","interactions":[],"lastModifiedDate":"2012-02-02T00:09:17","indexId":"wri024055","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2002-4055","title":"Evapotranspiration from selected fallowed agricultural fields on the Tule Lake National Wildlife Refuge, California, during May to October 2000","docAbstract":"An investigation of evapotranspiration, vegetation quantity and composition, and depth to the water table below the land surface was made at three sites in two fallowed agricultural lots on the 15,800-hectare Tule Lake National Wildlife Refuge in northern California during the 2000 growing season. All three sites had been farmed during 1999, but were not irrigated since the 1999 growing season. Vegetation at the lot C1B and lot 6 stubble sites included weedy species and small grain plants. The lot 6 cover crop site supported a crop of cereal rye that had been planted during the previous winter. Percentage of coverage by live vegetation ranged from 0 to 43.2 percent at the lot C1B site, from approximately 0 to 63.2 percent at the lot 6 stubble site, and it was estimated to range from 0 to greater than 90 percent at the lot 6 cover crop site. Evapotranspiration was measured using the Bowen ratio energy balance technique and it was estimated using a model that was based on the Priestley-Taylor equation and a model that was based on reference evapotranspiration with grass as the reference crop. Total evapotranspiration during May to October varied little among the three evapotranspiration measurement sites, although the timing of evapotranspiration losses did vary among the sites. Total evapotranspiration from the lot C1B site was 426 millimeters, total evapotranspiration from the lot 6 stubble site was 444 millimeters, and total evapotranspiration from the lot 6 cover crop site was 435 millimeters. The months of May to July accounted for approximately 78 percent of the total evapotranspiration from the lot C1B site, approximately 63 percent of the evapotranspiration from the lot 6 stubble site, and approximately 86 percent of the total evapotranspiration from the lot 6 cover crop site. Estimated growing season precipitation accounted for 16 percent of the growing-season evapotranspiration at the lot C1B site and for 17 percent of the growing-season evapotranspiration at the lot 6 stubble and cover crop sites. The ratio of evapotranspiration rate to the reference evapotranspiration rate was strongly correlated with percentage of site coverage by vegetation at the lot C1B and lot 6 stubble sites (correlation coefficient = 0.95, sample size = 6), where percentage of site coverage was determined from quantitative vegetation surveys. It is concluded that evapotranspiration was mediated by the vegetation at all three sites, and that the differences in seasonal timing of evapotranspiration losses were caused by differences in timing of vegetation growth and development and senescence among the sites. Depth to the water table below the land surface at lot C1B ranged from 0.67 meters in early July to greater than 1.39 meters in late August. Depth to the water table at lot 6 ranged from 0.77 meter in late May to greater than 1.40 meters in late August.","language":"ENGLISH","doi":"10.3133/wri024055","usgsCitation":"Bidlake, W.R., 2002, Evapotranspiration from selected fallowed agricultural fields on the Tule Lake National Wildlife Refuge, California, during May to October 2000: U.S. Geological Survey Water-Resources Investigations Report 2002-4055, 59 p., https://doi.org/10.3133/wri024055.","productDescription":"59 p.","costCenters":[],"links":[{"id":163632,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3143,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri024055/ ","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e6e4b07f02db5e7316","contributors":{"authors":[{"text":"Bidlake, W. R.","contributorId":28953,"corporation":false,"usgs":true,"family":"Bidlake","given":"W.","middleInitial":"R.","affiliations":[],"preferred":false,"id":209609,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":50795,"text":"ofr02243 - 2002 - Results of the U. S. Geological Survey's Analytical Evaluation Program for Standard Reference Samples Distributed in March 2002","interactions":[],"lastModifiedDate":"2012-02-02T00:11:32","indexId":"ofr02243","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-243","title":"Results of the U. S. Geological Survey's Analytical Evaluation Program for Standard Reference Samples Distributed in March 2002","docAbstract":"This report presents the results of the U.S. Geological Survey's analytical evaluation program for six standard reference samples -- T- 169 (trace constituents), M- 162 (major constituents), N-73 (nutrient constituents), N-74 (nutrient constituents), P-38 (low ionic-strength constituents), and Hg-34 (mercury) -- that were distributed in March 2002 to laboratories enrolled in the U.S. Geological Survey sponsored intedaboratory testing program. Analytical data received from 93 laboratories were evaluated with respect to overall laboratory performance and relative laboratory performance for each analyte in the six reference samples. Results of these evaluations are presented in tabular form. Also presented are tables and graphs summarizing the analytical data provided by each laboratory for each analyte in the six standard reference samples. The most probable value for each analyte was determined using nonparametric statistics.","language":"ENGLISH","doi":"10.3133/ofr02243","usgsCitation":"Woodworth, M., and Conner, B., 2002, Results of the U. S. Geological Survey's Analytical Evaluation Program for Standard Reference Samples Distributed in March 2002: U.S. Geological Survey Open-File Report 2002-243, 108 p. (1 figure, 17 tables, 10 p. of text), https://doi.org/10.3133/ofr02243.","productDescription":"108 p. (1 figure, 17 tables, 10 p. of text)","costCenters":[{"id":576,"text":"Standard Reference Sample Project- Branch of Quality Systems","active":false,"usgs":true}],"links":[{"id":8431,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://bqs.usgs.gov/srs/Report_Spr02.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":178413,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2002/0243/report-thumb.jpg"},{"id":86349,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0243/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db6055c7","contributors":{"authors":[{"text":"Woodworth, M.T.","contributorId":19602,"corporation":false,"usgs":true,"family":"Woodworth","given":"M.T.","email":"","affiliations":[],"preferred":false,"id":242321,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conner, B.F.","contributorId":8928,"corporation":false,"usgs":true,"family":"Conner","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":242320,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":38169,"text":"fs02202 - 2002 - Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:09:50","indexId":"fs02202","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"022-02","title":"Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska","docAbstract":"The Cook Inlet Basin encompasses 39,325 square miles in south-central Alaska. Approximately 350,000 people, more than half of Alaska?s population, reside in the basin, mostly in the Anchorage area. However, rapid growth is occurring in the Matanuska?Susitna and Kenai Peninsula Boroughs to the north and south of Anchorage. Ground-water resources provide about one-third of the water used for domestic, commercial and industrial purposes in the Anchorage metropolitan area and are the sole sources of water for industries and residents outside Anchorage. In 1997, a study of the Cook Inlet Basin was begun as part of the U.S. Geological Survey?s National Water-Quality Assessment Program. Samples of ground water were collected from 35 existing wells in unconsolidated glacial and alluvial aquifers during 1999 to determine the regional quality of ground water beneath about 790 mi2 of developed land and to gain a better understanding of the natural and human factors that affect the water quality (Glass, 2001). Of the 35 wells sampled, 31 had water analyzed for atmospherically derived substances to determine the ground water?s travel time from its point of recharge to its point of use or discharge?also known as ground-water age.\r\n\r\nGround water moves slowly from its point of recharge to its point of use or discharge. This water starts as rain and melting snow that soak into the ground as recharge. In the Matanuska?Susitna, Anchorage, and Kenai Peninsula areas, ground water generally moves from near the mountain fronts toward Cook Inlet or the major rivers. Much of the water pumped by domestic and public-supply wells may have traveled less than 10 miles, and the trip may have taken as short a time as a few days or as long as several decades. This ground water is vulnerable to contamination from the land surface, and many contaminants in the water would follow the same paths and have similar travel times from recharge areas to points of use as the chemical substances analyzed in this study. The effects of contamination may not be seen for several years after a contaminant is introduced into the ground-water system. Many contaminants could make the water unsuitable for drinking for many years, even in concentrations too low to detect without expensive chemical tests. The travel time of a chemically conservative substance depends primarily on the velocity of ground water through the aquifer, which in turn depends on the hydrologic characteristics of the aquifer system.","language":"ENGLISH","doi":"10.3133/fs02202","usgsCitation":"Glass, R.L., 2002, Ground-Water Age and its Water-Management Implications, Cook Inlet Basin, Alaska: U.S. Geological Survey Fact Sheet 022-02, 1 folded sheet ([4] p.) : col. ill., col. maps ; 28 cm. , https://doi.org/10.3133/fs02202.","productDescription":"1 folded sheet ([4] p.) : col. ill., col. maps ; 28 cm. ","costCenters":[],"links":[{"id":124636,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_022_02.bmp"},{"id":3466,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/FS/fs-022-02/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d657","contributors":{"authors":[{"text":"Glass, Roy L.","contributorId":86813,"corporation":false,"usgs":true,"family":"Glass","given":"Roy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":219251,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":38183,"text":"fs01202 - 2002 - Instream gravel mining and related issues in southern Missouri","interactions":[],"lastModifiedDate":"2012-02-02T00:09:53","indexId":"fs01202","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"012-02","title":"Instream gravel mining and related issues in southern Missouri","language":"ENGLISH","doi":"10.3133/fs01202","usgsCitation":"Femmer, S.R., 2002, Instream gravel mining and related issues in southern Missouri: U.S. Geological Survey Fact Sheet 012-02, 4 p., https://doi.org/10.3133/fs01202.","productDescription":"4 p.","costCenters":[],"links":[{"id":3480,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://mo.water.usgs.gov/fact_sheets/wtrqual/Gravel/","linkFileType":{"id":5,"text":"html"}},{"id":119336,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2002/0012/report-thumb.jpg"},{"id":64476,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2002/0012/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e5e4b07f02db5e6da0","contributors":{"authors":[{"text":"Femmer, Suzanne R. sfemmer@usgs.gov","contributorId":2668,"corporation":false,"usgs":true,"family":"Femmer","given":"Suzanne","email":"sfemmer@usgs.gov","middleInitial":"R.","affiliations":[{"id":396,"text":"Missouri Water Science Center","active":true,"usgs":true}],"preferred":false,"id":219280,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":38171,"text":"fs01002 - 2002 - Sources and Concentrations of Phosphorus in the Cheney Reservoir Watershed, South-Central Kansas","interactions":[],"lastModifiedDate":"2012-02-02T00:09:50","indexId":"fs01002","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"010-02","title":"Sources and Concentrations of Phosphorus in the Cheney Reservoir Watershed, South-Central Kansas","language":"ENGLISH","doi":"10.3133/fs01002","usgsCitation":"Pope, L.M., and Milligan, C.R., 2002, Sources and Concentrations of Phosphorus in the Cheney Reservoir Watershed, South-Central Kansas: U.S. Geological Survey Fact Sheet 010-02, 4 p., https://doi.org/10.3133/fs01002.","productDescription":"4 p.","costCenters":[],"links":[{"id":126516,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_010_02.jpg"},{"id":3468,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://ks.water.usgs.gov/Kansas/pubs/fact-sheets/fs.010-02.html","linkFileType":{"id":5,"text":"html"}},{"id":13759,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://ks.water.usgs.gov/pubs/fact-sheets/fs.010-02.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e6e4b07f02db5e7734","contributors":{"authors":[{"text":"Pope, Larry M.","contributorId":93455,"corporation":false,"usgs":true,"family":"Pope","given":"Larry","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Milligan, Chad R.","contributorId":77504,"corporation":false,"usgs":true,"family":"Milligan","given":"Chad","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":219253,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":38187,"text":"fs04802 - 2002 - Results of test drilling in the Basalt aquifer near Fallon, Nevada","interactions":[],"lastModifiedDate":"2012-02-02T00:09:53","indexId":"fs04802","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"048-02","title":"Results of test drilling in the Basalt aquifer near Fallon, Nevada","docAbstract":"Drilling of two test holes into the Fallon basalt aquifer commenced August 14, 2001. The basalt aquifer is located beneath the Carson Desert, near Fallon, Nevada, and is the sole source of drinking water for the City of Fallon, the Naval Air Station (NAS) Fallon, and the Fallon Paiute-Shoshone Tribe. Basalt comprising the aquifer is exposed at Rattlesnake Hill, an eroded volcanic cone, about 1 mile northeast of Fallon, and the remainder is buried beneath sediments deposited by the Carson River and ancient Lake Lahontan to depths of 600 feet near its edges (fig. 1). The basalt-aquifer system is a mushroom-shaped body of highly permeable volcanic rock. Viewed from above, the lateral extent of the basalt body is oval-shaped, about 4-miles wide and 10-miles long (fig. 1).\r\n\r\nDrilling was part of a cooperative study between the U.S. Geological Survey (USGS), the Bureau of Reclamation, and NAS Fallon. The study was started because of concern about the continued viability of the basalt-aquifer system as a source of municipal water supply. Increased pumping from about 1,700 acre-feet per year (acre-ft/yr) in the 1970?s to over 3,000 acre-ft/yr in the late 1990?s has caused water levels in the basalt to decline as much as 12 feet (fig. 2). During this same time period, water pumped from the aquifer at NAS Fallon and the City of Fallon wells showed that concentrations of dissolved chloride increased, although chloride concentrations were well within the U.S. Environmental Protection Agency?s (EPA) drinking-water standards; at this rate of increase, it would take decades to exceed the present standard (Maurer and Welch, 2001, p. 46). Concentrations of arsenic in the aquifer are about 0.1 milligrams per liter (mg/L), exceeding the drinking-water standard of 0.01 mg/L, but show no apparent change over time (Maurer and Welch, 2001, p. 10 and 48; U. S. Environmental Protection Agency, 2001).\r\n\r\nIncreasing concentrations of chloride may be caused by increased pumping, that induces inflow of more saline water from aquifers surrounding or underlying the basalt, or from greater depths within the basalt itself. Prior to the drilling on August 14, 2001, few wells penetrated the basalt more than 70 feet below its upper surface (Maurer and Welch, 2001, p. 34). This prevented monitoring changes in water quality deeper in the aquifer that might be moving upward with continued pumping. Purposes of drilling were to fully penetrate the basalt, determine its hydrogeological character, the distribution of water quality in the basalt and in the underlying sedimentary aquifer, install monitoring wells.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/fs04802","usgsCitation":"Maurer, D.K., 2002, Results of test drilling in the Basalt aquifer near Fallon, Nevada: U.S. Geological Survey Fact Sheet 048-02, 4 p., https://doi.org/10.3133/fs04802.","productDescription":"4 p.","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":125199,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2002/0048/report-thumb.jpg"},{"id":64478,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2002/0048/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db6054f5","contributors":{"authors":[{"text":"Maurer, Douglas K. dkmaurer@usgs.gov","contributorId":2308,"corporation":false,"usgs":true,"family":"Maurer","given":"Douglas","email":"dkmaurer@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":219291,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":38173,"text":"fs03902 - 2002 - The Sea-Floor Mapping Facility at the U.S. Geological Survey Woods Hole Field Center, Woods Hole, Massachusetts","interactions":[],"lastModifiedDate":"2012-02-02T00:09:50","indexId":"fs03902","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"039-02","title":"The Sea-Floor Mapping Facility at the U.S. Geological Survey Woods Hole Field Center, Woods Hole, Massachusetts","docAbstract":"Researchers of the sea-floor mapping facility at the U.S. Geological Survey (USGS) Woods Hole Field Center in Woods Hole, Mass., use state-of-the-art technology to produce accurate geologic maps of the sea floor. In addition to basic bathymetry and morphology, sea-floor maps may contain information about the distribution of sand resources, patterns of coastal erosion, pathways of pollutant transport, and geologic controls on marine biological habitats. The maps may also show areas of human impacts, such as disturbance by bottom fishing and pollution caused by offshore waste disposal. The maps provide a framework for scientific research and provide critical information to decisionmakers who oversee resources in the coastal ocean.","language":"ENGLISH","doi":"10.3133/fs03902","usgsCitation":"Deusser, R.E., Schwab, W.C., and Denny, J.F., 2002, The Sea-Floor Mapping Facility at the U.S. Geological Survey Woods Hole Field Center, Woods Hole, Massachusetts: U.S. Geological Survey Fact Sheet 039-02, 2 p., https://doi.org/10.3133/fs03902.","productDescription":"2 p.","costCenters":[],"links":[{"id":124840,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_039_02.bmp"},{"id":3470,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/fs039-02/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac6e4b07f02db67aa72","contributors":{"authors":[{"text":"Deusser, Rebecca E.","contributorId":14875,"corporation":false,"usgs":true,"family":"Deusser","given":"Rebecca","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":219259,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schwab, William C. 0000-0001-9274-5154 bschwab@usgs.gov","orcid":"https://orcid.org/0000-0001-9274-5154","contributorId":417,"corporation":false,"usgs":true,"family":"Schwab","given":"William","email":"bschwab@usgs.gov","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":219257,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Denny, Jane F. 0000-0002-3472-618X jdenny@usgs.gov","orcid":"https://orcid.org/0000-0002-3472-618X","contributorId":418,"corporation":false,"usgs":true,"family":"Denny","given":"Jane","email":"jdenny@usgs.gov","middleInitial":"F.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":219258,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":50796,"text":"ofr02224 - 2002 - Toxic substances from coal combustion - A comprehensive assessment, phase II: Element modes of occurrence for the Ohio 5/6/7, Wyodak, and North Dakota coal samples","interactions":[],"lastModifiedDate":"2018-07-31T13:24:12","indexId":"ofr02224","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-224","title":"Toxic substances from coal combustion - A comprehensive assessment, phase II: Element modes of occurrence for the Ohio 5/6/7, Wyodak, and North Dakota coal samples","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02224","usgsCitation":"Kolker, A., Mroczkowski, S.J., Palmer, C., Dennen, K.O., Finkelman, R.B., and Bullock, J.H., 2002, Toxic substances from coal combustion - A comprehensive assessment, phase II: Element modes of occurrence for the Ohio 5/6/7, Wyodak, and North Dakota coal samples: U.S. Geological Survey Open-File Report 2002-224, 79 p., https://doi.org/10.3133/ofr02224.","productDescription":"79 p.","costCenters":[],"links":[{"id":178414,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2002/0224/report-thumb.jpg"},{"id":86350,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0224/report.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db6281d7","contributors":{"authors":[{"text":"Kolker, Allan 0000-0002-5768-4533 akolker@usgs.gov","orcid":"https://orcid.org/0000-0002-5768-4533","contributorId":643,"corporation":false,"usgs":true,"family":"Kolker","given":"Allan","email":"akolker@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":242322,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mroczkowski, Stanley J. 0000-0001-8026-6025 smroczko@usgs.gov","orcid":"https://orcid.org/0000-0001-8026-6025","contributorId":2628,"corporation":false,"usgs":true,"family":"Mroczkowski","given":"Stanley","email":"smroczko@usgs.gov","middleInitial":"J.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":242323,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Palmer, Curtis A.","contributorId":46967,"corporation":false,"usgs":true,"family":"Palmer","given":"Curtis A.","affiliations":[],"preferred":false,"id":242324,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dennen, Kristen O.","contributorId":80348,"corporation":false,"usgs":true,"family":"Dennen","given":"Kristen","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":242325,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Finkelman, Robert B.","contributorId":85951,"corporation":false,"usgs":true,"family":"Finkelman","given":"Robert","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":242326,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bullock, John H. Jr.","contributorId":105316,"corporation":false,"usgs":true,"family":"Bullock","given":"John","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":242327,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":69559,"text":"i2543 - 2002 - Geologic and isostatic gravity map of the Nenana basin area, central Alaska","interactions":[],"lastModifiedDate":"2021-11-29T11:32:25.43463","indexId":"i2543","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2543","subseriesTitle":"GIS","title":"Geologic and isostatic gravity map of the Nenana basin area, central Alaska","docAbstract":"The Nenana Basin area is a prospective petroleum province in central Alaska, and this geologic and isostatic gravity map is part of a petroleum resource assessment of the area.
The geology was compiled from published sources as shown on the index map (map sheet). Map units are organized and presented according to the scheme of lithotectonic terranes proposed by Jones and others (1987) and Silberling and Jones (1984); we recognize, however, that this terrane scheme is controversial and likely to be revised in the future. In some cases, we combined certain terranes because we were unable to match the terrane boundaries given by Jones and others (1987) and Silberling and Jones (1984) with specific faults shown on existing geologic maps. Postaccretion cover deposits represent overlap assemblages that depositionally overlie accreted terranes. Plutonic igneous rocks shown on this map include several plutons that are clearly postaccretionary, based on isotopic ages and (or) field relations. It is possible that some of the plutons predate accretion, but this has not been demonstrated. According to Jones and others (1982), the terranes in the area of our map were assembled during late Mesozoic or earliest Cenozoic time.
The gravity contours are derived from data used in earlier compilations that are supplemented by some National Oceanic and Atmospheric Administration data along the Alaska Pipeline level line. The earlier compilations were used for simple Bouguer maps, prepared primarily by non-digital methods, and are superseded by this map. The present map is the result of digital processing that includes the 1967 Geodetic Reference System, the IGSN-71 datum, digital terrain corrections, and conversion to isostatic gravity so that geologic structures on the margin of the Alaska Range are more clearly portrayed. Computation procedures are described in part by Barnes (1972, 1984), Jachens and Roberts (1981), and Barnes and others (1994). The calculations used a crustal density of 2.67 g/cm3 , a density contrast at the base of the isostatic root of 0.4 g/cm3 , and a root thickness at sea level of 25 km. The distribution of data within the map area is uneven and locally controls the shape of the computer-generated contours. Altimetry was used for most of the elevation control and its inconsistency is responsible for many of the small contour irregularities. Ninety percent of the measurements are estimated to have an accuracy of about 1.5 mgal or about a quarter of the 5 mgal contour interval. Data collection and analysis were assisted by R.V. Allen, R.C. Jachens, M.A. Fisher, T.R. Bruns, J.G. Blank, J.W. Bader, Z.C. Valin, J.W. Cady, R.L. Morin, and P.V. Woodward.
The most promising area for petroleum exploration is a prominent 25 mgal isostatic gravity low north of Nenana (T. 2 S., R. 8 W.). This gravity low probably corresponds to the deepest part of a sedimentary basin filled by Cenozoic strata that includes nonmarine fluvial and lacustrine deposits of the Eocene to Miocene Usibelli Group. Smaller gravity lows are associated with outcrops of these sedimentary rocks north of Suntrana (T. 12 S., R. 6-9 W.) and Sable Pass (T. 16 S., R. 11 W.). A broad low on the north flank of the Alaska Range east of the Wood River (T. 10 S., R. 1 E.) indicates another basin under the Tanana lowland that extends eastward off the map area towards Delta Junction, where its presence was confirmed by both gravity and seismic data.
Gravity modelling suggests that the base of the Usibelli Group in the area north of Nenana (T. 2 S., R. 8 W.) is about 3,000 to 3,350 m beneath the ground surface. Organic geochemical studies indicate that mudstones and coals in the Usibelli Group are potential sources of petroleum; calculations based on borehole temperatures suggest that, in the area of the gravity low, these rocks may have been buried deeply enough to generate oil and gas. Two exploratory wells, the Union Nenana No. 1 and the ARCO Totek Hills No. 11, were drilled some distance away from the gravity low in areas where the Usibelli Group is thin. Mudlogs show that both wells were dry holes that bottomed in schist and had gas shows associated with coal beds in the Usibelli Group, but no reported signs of oil.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i2543","usgsCitation":"Frost, G.M., Barnes, D., and Stanley, R., 2002, Geologic and isostatic gravity map of the Nenana basin area, central Alaska: U.S. Geological Survey IMAP 2543, Report: 17 p.; 1 Plate: 55.00 x 41.00 inches, https://doi.org/10.3133/i2543.","productDescription":"Report: 17 p.; 1 Plate: 55.00 x 41.00 inches","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":188610,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10441,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/i2543/","linkFileType":{"id":5,"text":"html"}},{"id":110339,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_52137.htm","linkFileType":{"id":5,"text":"html"},"description":"52137"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Nenana basin area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -152.05,\n 63.4583\n ],\n [\n -147.4572,\n 63.4583\n ],\n [\n -147.4572,\n 65.4167\n ],\n [\n -152.05,\n 65.4167\n ],\n [\n -152.05,\n 63.4583\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a8103","contributors":{"authors":[{"text":"Frost, G. M.","contributorId":27144,"corporation":false,"usgs":true,"family":"Frost","given":"G.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":280589,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barnes, D.F.","contributorId":48960,"corporation":false,"usgs":true,"family":"Barnes","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":280590,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stanley, R. G. 0000-0001-6192-8783","orcid":"https://orcid.org/0000-0001-6192-8783","contributorId":77123,"corporation":false,"usgs":true,"family":"Stanley","given":"R. G.","affiliations":[],"preferred":false,"id":280591,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":69114,"text":"mf2387 - 2002 - Geologic map of the Hidden Hills and vicinity, Mohave County, northwestern Arizona","interactions":[],"lastModifiedDate":"2022-01-11T22:09:45.264799","indexId":"mf2387","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2387","title":"Geologic map of the Hidden Hills and vicinity, Mohave County, northwestern Arizona","docAbstract":"This digital map database is compiled from unpublished data and new mapping by the authors and represents the general distribution of surficial and bedrock geology in the mapped area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the area. The database delineates map units that are identified by age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution of the database to 1:31,680 or smaller.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf2387","usgsCitation":"Billingsley, G.H., Wellmeyer, J., Harr, M., and Priest, S.S., 2002, Geologic map of the Hidden Hills and vicinity, Mohave County, northwestern Arizona: U.S. Geological Survey Miscellaneous Field Studies Map 2387, HTML Document, https://doi.org/10.3133/mf2387.","productDescription":"HTML Document","costCenters":[],"links":[{"id":394225,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51959.htm"},{"id":191847,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":6375,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/mf/2002/2387/","linkFileType":{"id":5,"text":"html"}}],"scale":"1","country":"United States","state":"Arizona","county":"Mohave County","otherGeospatial":"Hidden Hills and vicinity","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -113.75,36.25 ], [ -113.75,36.5 ], [ -113.5,36.5 ], [ -113.5,36.25 ], [ -113.75,36.25 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b13e4b07f02db6a30ce","contributors":{"authors":[{"text":"Billingsley, G. H.","contributorId":101265,"corporation":false,"usgs":true,"family":"Billingsley","given":"G.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":279670,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wellmeyer, J. L.","contributorId":77612,"corporation":false,"usgs":true,"family":"Wellmeyer","given":"J. L.","affiliations":[],"preferred":false,"id":279668,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harr, Michelle","contributorId":26768,"corporation":false,"usgs":true,"family":"Harr","given":"Michelle","affiliations":[],"preferred":false,"id":279667,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Priest, S. S.","contributorId":78318,"corporation":false,"usgs":true,"family":"Priest","given":"S.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":279669,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":69115,"text":"mf2394 - 2002 - Geologic map of Clayhole Wash and vicinity, Mohave County, northwestern Arizona","interactions":[],"lastModifiedDate":"2012-02-10T00:11:33","indexId":"mf2394","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2394","title":"Geologic map of Clayhole Wash and vicinity, Mohave County, northwestern Arizona","docAbstract":"This digital map database is compiled from unpublished data and new mapping by the authors and represents the general distribution of surficial and bedrock geology in the mapped area. Together with the accompanying pamphlet, it provides current information on the geologic structure and stratigraphy of the area. The database dilineates map units that are identified by age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution of the database to 1:31,680 or smaller.","language":"ENGLISH","doi":"10.3133/mf2394","usgsCitation":"Billingsley, G.H., Priest, S.S., and Dudash, S., 2002, Geologic map of Clayhole Wash and vicinity, Mohave County, northwestern Arizona: U.S. Geological Survey Miscellaneous Field Studies Map 2394, 21 p. and 1 sheet, https://doi.org/10.3133/mf2394.","productDescription":"21 p. and 1 sheet","costCenters":[],"links":[{"id":110330,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51969.htm","linkFileType":{"id":5,"text":"html"},"description":"51969"},{"id":191848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":6376,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/mf/2002/2394/","linkFileType":{"id":5,"text":"html"}}],"scale":"1","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -113.25,36.75 ], [ -113.25,37 ], [ -113,37 ], [ -113,36.75 ], [ -113.25,36.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b13e4b07f02db6a317f","contributors":{"authors":[{"text":"Billingsley, G. H.","contributorId":101265,"corporation":false,"usgs":true,"family":"Billingsley","given":"G.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":279673,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Priest, S. S.","contributorId":78318,"corporation":false,"usgs":true,"family":"Priest","given":"S.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":279671,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dudash, S.L.","contributorId":95572,"corporation":false,"usgs":true,"family":"Dudash","given":"S.L.","affiliations":[],"preferred":false,"id":279672,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":38170,"text":"fs00902 - 2002 - Significant finding of water-quality studies and implications for Cheney Reservoir watershed, south-central Kansas, 1996-2001","interactions":[],"lastModifiedDate":"2022-06-30T18:59:59.525673","indexId":"fs00902","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"009-02","title":"Significant finding of water-quality studies and implications for Cheney Reservoir watershed, south-central Kansas, 1996-2001","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/fs00902","usgsCitation":"Pope, L.M., 2002, Significant finding of water-quality studies and implications for Cheney Reservoir watershed, south-central Kansas, 1996-2001: U.S. Geological Survey Fact Sheet 009-02, 4 p., https://doi.org/10.3133/fs00902.","productDescription":"4 p.","costCenters":[],"links":[{"id":402777,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51433.htm","linkFileType":{"id":5,"text":"html"}},{"id":64470,"rank":298,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2002/0009/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":122209,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2002/0009/report-thumb.jpg"}],"country":"United States","state":"Kansas","otherGeospatial":"Cheney Reservoir","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -97.81539916992188,\n 37.7109857819458\n ],\n [\n -97.75909423828125,\n 37.74791482485267\n ],\n [\n -97.80372619628906,\n 37.78699608830537\n ],\n [\n -97.90397644042969,\n 37.82876846980744\n ],\n [\n -97.899169921875,\n 37.790794553924414\n ],\n [\n -97.88543701171875,\n 37.763115548102924\n ],\n [\n -97.81539916992188,\n 37.7109857819458\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fae4b07f02db5f3d54","contributors":{"authors":[{"text":"Pope, Larry M.","contributorId":93455,"corporation":false,"usgs":true,"family":"Pope","given":"Larry","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219252,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":33008,"text":"ofr02214 - 2002 - Analysis of magnetotelluric profile data from the Ruby Mountains metamorphic core complex and southern Carlin Trend region, Nevada","interactions":[],"lastModifiedDate":"2018-05-14T14:38:07","indexId":"ofr02214","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-214","title":"Analysis of magnetotelluric profile data from the Ruby Mountains metamorphic core complex and southern Carlin Trend region, Nevada","docAbstract":"We have collected about 150 magnetotelluric (MT) soundings in northeastern Nevada in the region of the Ruby Mountains metamorphic core complex uplift and southern Carlin mineral trend, in an effort to illuminate controls on core complex evolution and deposition of world-class gold deposits. The region has experienced a broad range of tectonic events including several periods of compressional and extensional deformation, which have contributed to the total expression of electrical resistivity. Most of the soundings are in three east-west profiles across increasing degrees of core uplift to the north (Bald Mountain, Harrison Pass and Secret Pass latitudes). Two shorter lines cross a prominent east-west structure to the north of the northern profile. MT impedance tensor and vertical magnetic field rotations imply a N-NNE average regional geoelectric strike, similar to surface geologic trends. Model resistivity cross sections were derived using a 2-D inversion algorithm, which damps departures of model parameters from an a priori structure, emphasizing the transverse magnetic (TM) mode and vertical magnetic field data. Geological interpretation of the resistivity combines previous seismic, potential field and isotope models, structural and petrological models for regional compression and extension, and detailed structural/stratigraphic interpretations incorporating drilling for petroleum and mineral exploration. To first order, the resistivity structure is one of a moderately conductive, Phanerozoic sedimentary section fundamentally disrupted by intrusion and uplift of resistive crystalline rocks. Late Devonian and early Mississippian shales of the Pilot and Chainman Formations together form an important conductive marker sequence in the stratigraphy and show pronounced increases in conductance (conductivity-thickness product) from east to west. These increases in conductance are attributed to graphitization caused by Elko-Sevier era compressional shear deformation and possibly by intrusive heating. The resistive crystalline central massifs adjoin the host stratigraphy across crustal-scale, subvertical fault zones. These zones provide electric current pathways to the lower crust for heterogeneous, upper crustal induced current flow. Resistive core complex crust may be steeply bounded under the middle of the neighboring grabens and not deepen at a shallow angle to arbitrary distances to the west. The numerous crustal breaks imaged with MT may contribute to the low effective elastic thickness estimated regionally for the Great Basin and exemplify the mid-crustal, steeply dipping slip zones in which major earthquakes nucleate. An east-west oriented conductor in the crystalline upper crust spans the East Humboldt Range and northern Ruby Mountains. The conductor may be related to an inferred ArcheanProterozoic suture or nearby graphitic metasediments, with possible alteration by middle Tertiary magmatic activity. Lower crustal resistivity everywhere under the profiles is low and appears quasi one-dimensional. It is consistent with a low rock porosity (
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr02214","usgsCitation":"Wannamaker, P.E., Doerner, W.M., Stodt, J.A., Sodergen, T.L., and Rodriguez, B.D., 2002, Analysis of magnetotelluric profile data from the Ruby Mountains metamorphic core complex and southern Carlin Trend region, Nevada: U.S. Geological Survey Open-File Report 2002-214, 50 p., https://doi.org/10.3133/ofr02214.","productDescription":"50 p.","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":3179,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0214/","linkFileType":{"id":5,"text":"html"}},{"id":163262,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2002/0214/report-thumb.jpg"},{"id":60881,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2002/0214/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acfe4b07f02db680442","contributors":{"authors":[{"text":"Wannamaker, Philip E.","contributorId":86398,"corporation":false,"usgs":true,"family":"Wannamaker","given":"Philip","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":209681,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doerner, William M.","contributorId":17662,"corporation":false,"usgs":true,"family":"Doerner","given":"William","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":209678,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stodt, John A.","contributorId":79533,"corporation":false,"usgs":true,"family":"Stodt","given":"John","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":209680,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sodergen, Timothy L.","contributorId":63071,"corporation":false,"usgs":true,"family":"Sodergen","given":"Timothy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":209679,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rodriguez, Brian D. 0000-0002-2263-611X brod@usgs.gov","orcid":"https://orcid.org/0000-0002-2263-611X","contributorId":836,"corporation":false,"usgs":true,"family":"Rodriguez","given":"Brian","email":"brod@usgs.gov","middleInitial":"D.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":209677,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":32986,"text":"wri024105 - 2002 - Preliminary hydrogeologic assessment and study plan for a regional ground-water resource investigation of the Blue Ridge and Piedmont provinces of North Carolina","interactions":[],"lastModifiedDate":"2018-05-08T13:31:02","indexId":"wri024105","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2002-4105","title":"Preliminary hydrogeologic assessment and study plan for a regional ground-water resource investigation of the Blue Ridge and Piedmont provinces of North Carolina","docAbstract":"Prolonged drought, allocation of surface-water flow, and increased demands on ground-water supplies resulting from population growth are focuses for the need to evaluate ground-water resources in the Blue Ridge and Piedmont Provinces of North Carolina. Urbanization and certain aspects of agricultural production also have caused increased concerns about protecting the quality of ground water in this region.
More than 75 percent of the State's population resides in the Blue Ridge and Piedmont Provinces in an area that covers 30,544 square miles and 65 counties. Between 1940 and 2000, the population in the Piedmont and Blue Ridge Provinces increased from 2.66 to 6.11 million; most of this increase occurred in the Piedmont. Of the total population, an estimated 1.97 million people, or 32.3 percent (based on the 1990 census), relied on ground water for a variety of uses, including commercial, industrial, and most importantly, potable supplies.
Ground water in the Blue Ridge and Piedmont traditionally has not been considered as a source for large supplies, primarily because of readily available and seemingly limitless surface-water supplies, and the perception that ground water in the Blue Ridge and Piedmont Provinces occurs in a complex, generally heterogeneous geologic environment. Some reluctance to use ground water for large supplies derives from the reputation of aquifers in these provinces for producing low yields to wells, and the few high-yield wells that are drilled seem to be scattered in areas distant from where they are needed. Because the aquifers in these provinces are shallow, they also are susceptible to contamination by activities on the land surface.
In response to these issues, the North Carolina Legislature supported the creation of a Resource Evaluation Program to ensure the long-term availability, sustainability, and quality of ground water in the State. As part of the Resource Evaluation Program, the North Carolina Division of Water Quality, Groundwater Section, in cooperation with the U.S. Geological Survey, initiated a multiyear study of ground water in the Blue Ridge and Piedmont Provinces. The study began in 1999.
Most of the study area is underlain by a complex, two-part, regolith-fractured crystalline rock aquifer system. Thickness of the regolith throughout the study area is highly variable and ranges from 0 to more than 150 feet. The regolith consists of an unconsolidated or semiconsolidated mixture of clay and fragmental material ranging in grain size from silt to boulders. Because porosities range from 35 to 55 percent, the regolith provides the bulk of the water storage within the Blue Ridge and Piedmont ground-water system. At the base of the regolith is the transition zone where saprolite grades into unweathered bedrock. The transition zone has been identified as a potential conduit for rapid ground-water flow. If this is the case, the transition zone also may serve as a conduit for rapid movement of contaminants to nearby wells or to streams with channels that cut into 1 U.S. Geological Survey, Raleigh, North Carolina. 2 North Carolina Department of Environment and Natural Resources, Division of Water Quality, Groundwater Section. or through the transition zone. How rapidly a contaminant moves through the system largely may be a function of the characteristics of the transition zone. The transition zone is one of several topics identified during the literature review and data synthesis, for which there is a deficiency in data and understanding of the processes involved in the movement of ground water to surface water.
Because the Blue Ridge and Piedmont study area is so large, and the hydrogeology diverse, it is not feasible to study all of the area in detail. A more feasible approach is to select areas that are most representative of the land use, geology, and hydrology to obtain an understanding of the hydrologic processes in the selected areas, and transfer the knowledge from these local \"type areas\" to similar regional hydrogeologic areas.
For the purpose of this study, the term \"type area\" applies to a 10- to 100-square mile area within a hydrogeologic terrane where information is sufficient to develop and test a concept of ground-water flow by using analytical or numerical methods that can be validated by field measurements. Ideally, these type areas are selected to be representative of the flow system that is present wherever a particular hydrogeologic terrane is present.
This report consists of two basic parts. The first part describes the results of a comprehensive review and synthesis of information and literature that provides the basic background for the study. This includes current (2002) knowledge regarding general geology and the hydrogeologic framework of the fractured-rock aquifer system that underlies the Blue Ridge and Piedmont Provinces. In spite of the quantity of information identified during the literature review and the amount of past work that has been documented, there are still research needs to be met.
The second part of the report describes State ground-water issues and problems, available data, and data deficiencies. It also describes the design and implementation of efforts to characterize ground-water quality and to quantify factors that influence the movement and availability of ground water in the hydrogeologic terranes characterized by (1) massive or foliated crystalline rocks overlain by thick regolith and (2) massive or foliated crystalline rocks overlain by thin regolith.
As of September 2001, seven sites had been identified as potential study sites to be used to characterize the hydrogeology and water quality of ype areas considered representative of the larger terranes. Detailed geologic mapping, core drilling, well installation, and surface and borehole geophysical surveys are in progress at four of the sites.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri024105","collaboration":"Prepared in cooperation with the Groundwater Section of the North Carolina Department of Environment and Natural Resources, Division of Water Quality","usgsCitation":"Daniel, C.C., and Dahlen, P.R., 2002, Preliminary hydrogeologic assessment and study plan for a regional ground-water resource investigation of the Blue Ridge and Piedmont provinces of North Carolina: U.S. Geological Survey Water-Resources Investigations Report 2002-4105, 60 p., https://doi.org/10.3133/wri024105.","productDescription":"60 p.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":3154,"rank":100,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2002/4105/wri20024105.pdf","text":"Report","size":"4.36 MB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 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U.S. Geological Survey
720 Gracern Road
Columbia, SC 29210
The U. S. Geological Survey (USGS) recently conducted a multi-disciplinary study of the Middle Rio Grande basin (Bartolino and Cole, 2002; Fig. 1). The main purpose of this study was to gain a better multi-dimensional understanding of the basin's hydrogeologic framework and use this new understanding to construct an improved regional ground-water flow model. The Middle Rio Grande basin fill serves as the primary water resource for Albuquerque and surrounding communities (Thorn and others, 1993). It is composed of poorly consolidated, Tertiary to Quaternary sediments, collectively called the Santa Fe Group. These sediments were deposited during the Tertiary to Quaternary development of the Rio Grande rift (Fig. 1, inset). The strata vary in thickness from 1,000 to more than 4,000 m and range from mudstone to conglomerate (Kelley, 1977; May and Russell, 1994).
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/ofr02205","usgsCitation":"Sweeney, R.E., Grauch, V.J., and Phillips, J.D., 2002, Merged digital aeromagnetic data for the middle Rio Grande and southern Espanola basins, New Mexico: U.S. Geological Survey Open-File Report 2002-205, https://doi.org/10.3133/ofr02205.","costCenters":[],"links":[{"id":163261,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3178,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2002/ofr-02-0205/","linkFileType":{"id":5,"text":"html"}}],"scale":"1","country":"United States","state":"New Mexico","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ae4b07f02db624eb1","contributors":{"authors":[{"text":"Sweeney, Ronald E.","contributorId":89564,"corporation":false,"usgs":true,"family":"Sweeney","given":"Ronald","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":209676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grauch, V. J. S. 0000-0002-0761-3489","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":34125,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"","middleInitial":"J. S.","affiliations":[],"preferred":false,"id":209675,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Phillips, Jeffrey D. 0000-0002-6459-2821 jeff@usgs.gov","orcid":"https://orcid.org/0000-0002-6459-2821","contributorId":1572,"corporation":false,"usgs":true,"family":"Phillips","given":"Jeffrey","email":"jeff@usgs.gov","middleInitial":"D.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":209674,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":33006,"text":"ofr02188 - 2002 - Potentiometric surface of the upper Floridan aquifer, west-central Florida, September 2001","interactions":[],"lastModifiedDate":"2021-10-13T19:13:00.160098","indexId":"ofr02188","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2002-188","title":"Potentiometric surface of the upper Floridan aquifer, west-central Florida, September 2001","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr02188","usgsCitation":"Duerr, A.D., 2002, Potentiometric surface of the upper Floridan aquifer, west-central Florida, September 2001: U.S. Geological Survey Open-File Report 2002-188, 1 Plate: 28.44 × 31.68 inches, https://doi.org/10.3133/ofr02188.","productDescription":"1 Plate: 28.44 × 31.68 inches","costCenters":[],"links":[{"id":163260,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":60880,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2002/0188/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":390487,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_51827.htm"}],"country":"United States","state":"Florida","otherGeospatial":"upper Floridan aquifer","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -82.85,\n 26.7692\n ],\n [\n -81.1417,\n 26.7692\n ],\n [\n -81.1417,\n 29.5\n ],\n [\n -82.85,\n 29.5\n ],\n [\n -82.85,\n 26.7692\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad3e4b07f02db6822f9","contributors":{"authors":[{"text":"Duerr, A. D.","contributorId":29821,"corporation":false,"usgs":true,"family":"Duerr","given":"A.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":209673,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32997,"text":"wri014246 - 2002 - Hydrogeologic framework, availability of water supplies, and saltwater intrusion, Cape May County, New Jersey","interactions":[],"lastModifiedDate":"2012-02-02T00:09:19","indexId":"wri014246","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2001-4246","title":"Hydrogeologic framework, availability of water supplies, and saltwater intrusion, Cape May County, New Jersey","docAbstract":"During 1960-90, saltwater intrusion forced the abandonment of at least 10 public-supply wells, 3 industrial-supply wells, and more than 100 domestic-supply wells in Cape May County, N.J. Actual or imminent ground-water contamination caused by land-use practices and human activities has forced the closure of at least six shallow public-supply wells and many domestic-supply wells. \r\n\r\nFreshwater in Cape May County flows in many small streams and is held in wetlands and natural and artificial ponds. More importantly, freshwater from precipitation passes through and is stored in five aquifers-- Holly Beach water-bearing zone, estuarine sand aquifer, Cohansey aquifer, Rio Grande water-bearing zone, and Atlantic City 800-foot sand. \r\n\r\nSurface-water discharges were measured at 14 stream sites. The Tuckahoe River is the largest stream in Cape May County. The mean annual discharge for the Tuckahoe River at Head of River was 43.8 ft3/s (cubic feet per second) or 10,800 Mgal/yr (million gallons per year) during the period of record (1969-93). Mean daily discharge ranged from 25 ft3/s or 16 Mgal/d in September to 73 ft3/s or 47 Mgal/d in April. Mean daily discharge at the eight largest streams wholly within the county ranged from 15.9 to 3.05 ft3/s (3,750 to 720 Mgal/yr). \r\n\r\nTotal water use in the county was about 8,600 Mgal/yr in 1990, including about 25 Mgal/yr of surface water, 3,000 Mgal/yr from the Holly Beach water-bearing zone, 1,000 Mgal/yr from the estuarine sand aquifer, 2,200 Mgal/yr from the Cohansey aquifer, 200 Mgal/yr from the Rio Grande water-bearing zone, and 2,200 Mgal/yr from the Atlantic City 800-foot sand. \r\n\r\nWater-level data collected during April 1991 for more than 200 wells show that in some locations ground-water flow directions and rates have changed when compared with those shown on historical potentiometric-surface maps. In 1991, water levels in the Holly Beach water-bearing zone were nearly identical to levels prior to development. A cone of depression has developed in the estuarine sand aquifer; the water-level altitude near the center of the cone was about -5 ft in 1991. An extensive cone of depression has developed in the Cohansey aquifer; the water-level altitude near the center of the cone was about -20 ft. A small cone of depression has developed in the Rio Grande water-bearing zone; the altitude near the center was -5 ft. An elongated cone of depression has developed in the Atlantic City 800-foot sand; the water-level altitude was about -70 ft in Ocean City and -20 ft in Stone Harbor. Waterlevel maps from predevelopment, 1958, 1978, 1983, and 1988 show that the cones of depression are getting deeper and are expanding in the Atlantic City 800-foot sand. \r\n\r\nThe 250-mg/L (milligram per liter) line of equal chloride concentration and 50 mg/L line of equal sodium concentration have moved inland, possibly since the early 1900's. Chloride concentrations have increased in many wells in the confined aquifers along the coastline in the southern part of the county. Nitrate concentrations greater than 1 mg/L were present in water samples collected from 10 wells that tap the Holly Beach water-bearing zone. Concentrations of nitrate greater than 10 mg/L in samples collected in Lower, Middle, Upper, and Dennis Townships may result from effluent from septic systems or from agricultural activities. \r\n\r\nA water budget shows that the mean annual precipitation is about 42 in., and about 119,000 Mgal falls each year on uplands and freshwater wetlands in the county. About 63,600 Mgal/yr is evapotranspired, 8,200 Mgal/yr becomes overland flow, and 47,200 Mgal/yr recharges the Holly Beach water-bearing zone. In northern Cape MayCounty, most recharge ultimately is discharged to streams. In southern Cape May County, about 20 percent of recharge is diverted to withdrawal wells. \r\n\r\nBecause saltwater intrusion has occurred in the confined aquifers along the Atlantic and Delaware Bay coastlines, new supply wells placed along th","language":"ENGLISH","doi":"10.3133/wri014246","usgsCitation":"Lacombe, P., and Carleton, G.B., 2002, Hydrogeologic framework, availability of water supplies, and saltwater intrusion, Cape May County, New Jersey: U.S. Geological Survey Water-Resources Investigations Report 2001-4246, ix, 151 p. : ill., maps ; 28 cm., https://doi.org/10.3133/wri014246.","productDescription":"ix, 151 p. : ill., maps ; 28 cm.","costCenters":[],"links":[{"id":3159,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri014246/","linkFileType":{"id":5,"text":"html"}},{"id":163089,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db62799c","contributors":{"authors":[{"text":"Lacombe, Pierre J. placombe@usgs.gov","contributorId":2486,"corporation":false,"usgs":true,"family":"Lacombe","given":"Pierre J.","email":"placombe@usgs.gov","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":false,"id":209646,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carleton, Glen B. 0000-0002-7666-4407 carleton@usgs.gov","orcid":"https://orcid.org/0000-0002-7666-4407","contributorId":3795,"corporation":false,"usgs":true,"family":"Carleton","given":"Glen","email":"carleton@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":209647,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":38193,"text":"fs11301 - 2002 - Natural gas production in the United States","interactions":[],"lastModifiedDate":"2012-02-02T00:10:00","indexId":"fs11301","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"113-01","title":"Natural gas production in the United States","language":"ENGLISH","doi":"10.3133/fs11301","usgsCitation":"Schenk, C.J., and Pollastro, R.M., 2002, Natural gas production in the United States: U.S. Geological Survey Fact Sheet 113-01, 2 p., https://doi.org/10.3133/fs11301.","productDescription":"2 p.","costCenters":[],"links":[{"id":119222,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_113_01.bmp"},{"id":3485,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/fs-0113-01/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db6981c7","contributors":{"authors":[{"text":"Schenk, Christopher J. 0000-0002-0248-7305 schenk@usgs.gov","orcid":"https://orcid.org/0000-0002-0248-7305","contributorId":826,"corporation":false,"usgs":true,"family":"Schenk","given":"Christopher","email":"schenk@usgs.gov","middleInitial":"J.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":219299,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pollastro, Richard M.","contributorId":25100,"corporation":false,"usgs":true,"family":"Pollastro","given":"Richard","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219300,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":32931,"text":"fs04502 - 2002 - U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","interactions":[{"subject":{"id":32931,"text":"fs04502 - 2002 - U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs04502","publicationYear":"2002","noYear":false,"title":"U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)"},"predicate":"SUPERSEDED_BY","object":{"id":98833,"text":"fs20103102 - 2010 - 2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs20103102","publicationYear":"2010","noYear":false,"title":"2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)"},"id":1}],"supersededBy":{"id":98833,"text":"fs20103102 - 2010 - 2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)","indexId":"fs20103102","publicationYear":"2010","noYear":false,"title":"2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)"},"lastModifiedDate":"2012-02-02T00:09:18","indexId":"fs04502","displayToPublicDate":"2002-07-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"045-02","title":"U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA)","docAbstract":"A new USGS assessment concludes that NPRA holds signicantly greater petroleum resources than previously estimated. Technically recoverable, undiscovered oil beneath the Federal part of NPRA likely ranges between 5.9 and 13.2 billion barrels, with a mean (expected) value of 9.3 billion barrels. An estimated 1.3 to 5.6 billion barrels of those technically recoverable oil resources is economically recoverable at market prices of $22 to $30 per barrel. Technically recoverable, undiscovered nonassociated natural gas for the same area likely ranges between 39.1 and 83.2 trillion cubic feet, with a mean (expected) value of 59.7 trillion cubic feet. The economic viability of this gas will depend on the availability of a natural-gas pipeline for transport to market.","language":"ENGLISH","doi":"10.3133/fs04502","usgsCitation":"Bird, K.J., and Houseknecht, D., 2002, U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): U.S. Geological Survey Fact Sheet 045-02, 6 p., https://doi.org/10.3133/fs04502.","productDescription":"6 p.","costCenters":[],"links":[{"id":3095,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2002/fs045-02/","linkFileType":{"id":5,"text":"html"}},{"id":121946,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_045_02.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a2ce4b07f02db613a18","contributors":{"authors":[{"text":"Bird, K. J.","contributorId":57824,"corporation":false,"usgs":false,"family":"Bird","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":209464,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":209463,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}