Samples from the Lake Anne watershed were collected and analyzed to assess the water quality from December 1997 through January 1999. Lake Anne is a stream impoundment in suburban Northern Virginia and its outflow is a sub-tributary of the Potomac River. Samples of wet deposition (precipitation), lake water, and streamwater that drain into and from Lake Anne were collected and analyzed. Trace-element clean sampling and analysis protocols were followed throughout the project. This report is a compilation of the precipitation, lake-water, and streamwater data collected in the Lake Anne watershed and the associated quality assurance/quality control data. Concentrations of the trace elements arsenic, barium, cadmium, chromium, copper, lead, manganese, nickel, strontium, vanadium, and zinc, and of the major inorganic ions, aluminum, bicarbonate, calcium, chloride, hydrogen ion, iron, magnesium, potassium, nitrate, sodium, and sulfate are reported.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00481","issn":"0094-9140","usgsCitation":"Conko, K.M., Kennedy, M.M., and Rice, K.C., 2000, Water-quality data collected at Lake Anne, Reston, Virginia, 1997-1999: U.S. Geological Survey Open-File Report 2000-481, 49 p., https://doi.org/10.3133/ofr00481.","productDescription":"49 p.","numberOfPages":"53","costCenters":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true}],"links":[{"id":157060,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0481/report-thumb.jpg"},{"id":52203,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0481/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Virginia","county":"Fairfax","city":"Reston","otherGeospatial":"Lake Anne","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.3337721824646,\n 38.963947050281696\n ],\n [\n -77.33282804489136,\n 38.96556540279207\n ],\n [\n -77.33327865600586,\n 38.965748924969596\n ],\n [\n -77.33527421951294,\n 38.966249437582796\n ],\n [\n -77.33750581741332,\n 38.96633285600784\n ],\n [\n -77.33995199203491,\n 38.96713366789038\n ],\n [\n -77.3403811454773,\n 38.968785313806805\n ],\n [\n -77.34123945236206,\n 38.96858511635288\n ],\n [\n -77.3412823677063,\n 38.96748402024227\n ],\n [\n -77.34304189682007,\n 38.96786773749657\n ],\n [\n -77.34317064285278,\n 38.96730050255978\n ],\n [\n -77.34100341796875,\n 38.96648300892541\n ],\n [\n -77.34106779098511,\n 38.9656988735138\n ],\n [\n -77.33827829360962,\n 38.96436415498044\n ],\n [\n -77.3361325263977,\n 38.96349657444878\n ],\n [\n -77.3337721824646,\n 38.963947050281696\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e4e4b07f02db5e62f4","contributors":{"authors":[{"text":"Conko, Kathryn M. 0000-0001-6361-4921 kmconko@usgs.gov","orcid":"https://orcid.org/0000-0001-6361-4921","contributorId":2930,"corporation":false,"usgs":true,"family":"Conko","given":"Kathryn","email":"kmconko@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":188838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kennedy, Margaret M.","contributorId":178170,"corporation":false,"usgs":true,"family":"Kennedy","given":"Margaret","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":188839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rice, Karen C. 0000-0002-9356-5443 kcrice@usgs.gov","orcid":"https://orcid.org/0000-0002-9356-5443","contributorId":1998,"corporation":false,"usgs":true,"family":"Rice","given":"Karen","email":"kcrice@usgs.gov","middleInitial":"C.","affiliations":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true}],"preferred":false,"id":188837,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":23947,"text":"ofr00485 - 2000 - Estimation of hydraulic parameters from an unconfined aquifer test conducted in a glacial outwash deposit, Cape Cod, Massachusetts","interactions":[],"lastModifiedDate":"2020-02-23T17:09:25","indexId":"ofr00485","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"2000-485","title":"Estimation of hydraulic parameters from an unconfined aquifer test conducted in a glacial outwash deposit, Cape Cod, Massachusetts","docAbstract":"An aquifer test conducted in a sand and gravel, glacial outwash deposit on Cape Cod, Massachusetts was analyzed by means of a model for flow to a partially penetrating well in a homogeneous, anisotropic unconfined aquifer. The model is designed to account for all significant mechanisms expected to influence drawdown in observation piezometers and in the pumped well. In addition to the usual fluid-flow and storage processes, additional processes include effects of storage in the pumped well, storage in observation piezometers, effects of skin at the pumped-well screen, and effects of drainage from the zone above the water table. The aquifer was pumped at a rate of 320 gallons per minute for 72-hours and drawdown measurements were made in the pumped well and in 20 piezometers located at various distances from the pumped well and depths below the land surface. To facilitate the analysis, an automatic parameter estimation algorithm was used to obtain relevant unconfined aquifer parameters, including the saturated thickness and a set of empirical parameters that relate to gradual drainage from the unsaturated zone. \rDrainage from the unsaturated zone is treated in this paper as a finite series of exponential terms, each of which contains one empirical parameter that is to be determined. It was necessary to account for effects of gradual drainage from the unsaturated zone to obtain satisfactory agreement between measured and simulated drawdown, particularly in piezometers located near the water table. The commonly used assumption of instantaneous drainage from the unsaturated zone gives rise to large discrepancies between measured and predicted drawdown in the intermediate-time range and can result in inaccurate estimates of aquifer parameters when automatic parameter estimation procedures are used. \rThe values of the estimated hydraulic parameters are consistent with estimates from prior studies and from what is known about the aquifer at the site. Effects of heterogeneity at the site were small as measured drawdowns in all piezometers and wells were very close to the simulated values for a homogeneous porous medium. The estimated values are: specific yield, 0.26; saturated thickness, 170 feet; horizontal hydraulic conductivity, 0.23 feet per minute; vertical hydraulic conductivity, 0.14 feet per minute; and specific storage, 1.3x10-5 per foot. \rIt was found that drawdown in only a few piezometers strategically located at depth near the pumped well yielded parameter estimates close to the estimates obtained for the entire data set analyzed simultaneously. If the influence of gradual drainage from the unsaturated zone is not taken into account, specific yield is significantly underestimated even in these deep-seated piezometers. This helps to explain the low values of specific yield often reported for granular aquifers in the literature. If either the entire data set or only the drawdown in selected deep-seated piezometers was used, it was found unnecessary to conduct the test for the full 72-hours to obtain accurate estimates of the hydraulic parameters. For some piezometer groups, practically identical results would be obtained for an aquifer test conducted for only 8-hours. Drawdowns measured in the pumped well and piezometers at distant locations were diagnostic only of aquifer transmissivity.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00485","issn":"0094-9140","usgsCitation":"Moench, A., Garabedian, S.P., and LeBlanc, D.R., 2000, Estimation of hydraulic parameters from an unconfined aquifer test conducted in a glacial outwash deposit, Cape Cod, Massachusetts: U.S. Geological Survey Open-File Report 2000-485, 132 p., https://doi.org/10.3133/ofr00485.","productDescription":"132 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":154947,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1651,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/ofr00-485/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Massachusetts ","otherGeospatial":"Cape Cod","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.68603515625,\n 41.566141964768384\n ],\n [\n -69.873046875,\n 41.566141964768384\n ],\n [\n -69.873046875,\n 42.09007006868398\n ],\n [\n -70.68603515625,\n 42.09007006868398\n ],\n [\n -70.68603515625,\n 41.566141964768384\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ae4b07f02db5fb291","contributors":{"authors":[{"text":"Moench, A.F.","contributorId":91495,"corporation":false,"usgs":true,"family":"Moench","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":191025,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garabedian, Stephen P.","contributorId":91090,"corporation":false,"usgs":true,"family":"Garabedian","given":"Stephen","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":191024,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LeBlanc, Denis R. 0000-0002-4646-2628 dleblanc@usgs.gov","orcid":"https://orcid.org/0000-0002-4646-2628","contributorId":1696,"corporation":false,"usgs":true,"family":"LeBlanc","given":"Denis","email":"dleblanc@usgs.gov","middleInitial":"R.","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":191023,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":24828,"text":"ofr00484 - 2000 - Preliminary estimate of the amplification of possible earthquake ground motion at a site in Charleston County, South Carolina","interactions":[],"lastModifiedDate":"2012-02-02T00:08:14","indexId":"ofr00484","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"2000-484","title":"Preliminary estimate of the amplification of possible earthquake ground motion at a site in Charleston County, South Carolina","docAbstract":"We estimate site amplification at the location of a proposed bridge near Charleston, South\r\nCarolina. Model calculations indicate that amplification at periods of 1 s and longer is likely to be\r\nstrongly influenced by the effects of a large contrast in shear-wave velocity at a depth of\r\napproximately 1 km (3,000 ft). On-site borehole data, regional geological and geophysical\r\ninformation, and data from a geologically similar setting near Memphis, Tennessee allowed us to\r\nestimate profiles of shear-wave velocity, shear-wave attenuation, and density from ground level\r\ndown to metamorphic and igneous rocks that are approximately 3 km (9,500 ft) beneath the site.\r\nWe modeled amplifications that would be produced at the surface and at the top and bottom of\r\nthe Cooper Marl. Amplification estimates that are based only on the shallow shear-wave\r\nstructure, for example in the upper 100 m (300 ft), can severely underestimate long-period\r\namplification at the site. Additional modeling could help determine whether new data should be\r\ncollected, to resolve remaining uncertainties about likely amplification.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr00484","issn":"0094-9140","usgsCitation":"Wheeler, R.L., and Cramer, C.H., 2000, Preliminary estimate of the amplification of possible earthquake ground motion at a site in Charleston County, South Carolina (Version 1.0.): U.S. Geological Survey Open-File Report 2000-484, 33 p., https://doi.org/10.3133/ofr00484.","productDescription":"33 p.","costCenters":[],"links":[{"id":157118,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1847,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0484/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c453","contributors":{"authors":[{"text":"Wheeler, Russell L. wheeler@usgs.gov","contributorId":858,"corporation":false,"usgs":true,"family":"Wheeler","given":"Russell","email":"wheeler@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":false,"id":192638,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cramer, Chris H.","contributorId":32196,"corporation":false,"usgs":true,"family":"Cramer","given":"Chris","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":192639,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":22725,"text":"ofr00472 - 2000 - Transport of suspended and bedload sediment at eight stations in the Coeur d'Alene River basin, Idaho","interactions":[],"lastModifiedDate":"2012-11-25T21:45:08","indexId":"ofr00472","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"2000-472","title":"Transport of suspended and bedload sediment at eight stations in the Coeur d'Alene River basin, Idaho","docAbstract":"The Remedial Investigation/Feasibility Study conducted by the U.S. Environmental Protection Agency within the Spokane River Basin of northern Idaho and eastern Washington included extensive data-collection activities to determine the nature and extent of trace-element contamination within the basin. As part of the investigation, the U.S. Geological Survey designed and implemented a sampling program to assess sediment transport in the Coeur d’Alene River Basin. Suspended and bedload sediments were sampled at four stations at or near base flow and at eight stations during low, moderate, and high discharge conditions between February 1999 and April 2000.\nThe concentrations and loads of suspended and bedload sediment at all stations were directly related to stream discharge. To quantify these relationships, a power function was used to develop sediment-transport curves at all stations. Although the transport curves for most of the stations indicate a good log-log relationship between stream discharge and suspended- and bedload-sediment discharge, there was a fair amount of scatter about the best-fit regression at most stations. For suspended-sediment discharge, the scatter can be primarily attributed to a hysteresis effect in the concentration of suspended sediment as stream discharge rises and falls. The effects of hysteresis on bedload-sediment discharge were difficult to assess because of a paucity of samples collected over the stream hydrograph.\nAt most of the stations, and at the stream discharges sampled, the transport characteristics for fine- and sand-sized suspended sediment were similar. However, at the two main-stem Coeur d’Alene River stations, Rose Lake and Harrison, the suspended-sediment load was primarily composed of fine-grained sediment at stream discharges of less than 15,000 cubic feet per second. These two stations are characterized by relatively slow water velocities, which appear to be insufficient to transport sand-sized sediment at lower stream discharge.\nAt most of the stations, and at the stream discharges sampled, the bedload was primarily composed of material greater than 2 millimeters in diameter, the break between sand and gravel. A predominance of sand-sized bedload was noted at only a few stations, and generally only during low stream discharge. The particle-size distribution of bedload sediment at most stations became proportionately coarser as stream discharge increased. During the peak of snowmelt runoff for water years 1999 and 2000, gravel-sized material between 2 and 64 millimeters in diameter comprised more than 70 percent of the bedload transport at most stations. However, at the station on the Coeur d’Alene River at Rose Lake, the bedload was predominantly composed of fine-grained material of less than 1 millimeter in diameter for all measured stream discharges. The slow water velocities at Rose Lake accounted for the predominance of fine-grained sediment transport.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00472","isbn":"0094-9140","collaboration":"Prepared in cooperation with U.S. Environmental Protection Agency","usgsCitation":"Clark, G.M., and Woods, P.F., 2000, Transport of suspended and bedload sediment at eight stations in the Coeur d'Alene River basin, Idaho: U.S. Geological Survey Open-File Report 2000-472, iv, 26 p., https://doi.org/10.3133/ofr00472.","productDescription":"iv, 26 p.","numberOfPages":"33","costCenters":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"links":[{"id":262314,"rank":800,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0472/report.pdf"},{"id":262315,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0472/report-thumb.jpg"}],"country":"United States","state":"Idaho","city":"Harrison","otherGeospatial":"Rose Lake","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.9914,47.0794 ], [ -116.9914,47.9947 ], [ -115.493,47.9947 ], [ -115.493,47.0794 ], [ -116.9914,47.0794 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ce4b07f02db626b8b","contributors":{"authors":[{"text":"Clark, Greg M.","contributorId":75185,"corporation":false,"usgs":true,"family":"Clark","given":"Greg","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":188766,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Woods, Paul F.","contributorId":82273,"corporation":false,"usgs":true,"family":"Woods","given":"Paul","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":188767,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31189,"text":"ofr00474 - 2000 - Petrology of arkosic sandstones, Pennsylvanian Minturn Formation and Pennsylvanian and Permian Sangre de Cristo Formation, Sangre de Cristo Range, Colorado - data and preliminary interpretations","interactions":[],"lastModifiedDate":"2017-03-07T11:08:11","indexId":"ofr00474","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"2000-474","title":"Petrology of arkosic sandstones, Pennsylvanian Minturn Formation and Pennsylvanian and Permian Sangre de Cristo Formation, Sangre de Cristo Range, Colorado - data and preliminary interpretations","docAbstract":"This report describes the mineral and chemical composition of immature, arkosic sandstones of the Pennsylvanian Minturn and Pennsylvanian and Permian Sangre de Cristo Formations, which were derived from the Ancestral Rocky Mountains. Located in the Sangre de Cristo Range of southern Colorado, the Minturn and Sangre de Cristo Formations contain some of the most immature, sodic arkoses shed from the Ancestral Rocky Mountains. The Minturn Formation was deposited as fan deltas in marine and alluvial environments; the Sangre de Cristo Formation was deposited as alluvial fans.\r\n\r\nArkoses of the Minturn and Sangre de Cristo Formations are matrix-rich and thus may be properly considered arkosic wackes in the terminology of Gilbert (Williams and others, 1954). In general, potassium feldspar and plagioclase are subequal in abundance. Arkose of the Sangre de Cristo Formation is consistently plagioclase-rich; arkose from the Minturn Formation is more variable. Quartz and feldspar grains are accompanied by a few percent rock fragments, consisting mostly of intermediate to granitic plutonic rocks, gneiss, and schist. All of the rock fragments seen in sandstone are present in interbedded conglomerate, consistent with derivation from a Precambrian terrane of gneiss and plutonic rocks much like that exposed in the present Sangre de Cristo Range.\r\n\r\nComparison of mineral and major oxide abundances reveals a strong association of detrital quartz with SiO2, all other detrital minerals (totaled) with Al2O3, potassium feldspar plus mica with K2O, and plagioclase with Na2O. Thus, major oxide content is a good predictor of detrital mineralogy, although contributions from matrix and cement make these relationships less than perfect.\r\n\r\nDetrital minerals and major oxides tend to form inverse relationships that reflect mixtures of varying quantities of minerals; when one mineral is abundant, the abundance of others declines by dilution. In arkose of the Minturn and Sangre de Cristo Formations, the abundance of quartz (and SiO2) is enhanced by weathering and transport, which destroys feldspar and rock fragments. Weathering also preferentially destroys plagioclase (and removes Na2O) over potassium feldspar. Thus, as fresh sodic arkose detritus is weathered and transported in the fluvial environment, it becomes potassic and quartz-rich. Stratigraphic profiles of mineral and major oxide abundance reveal that weathering and transport, including reworking by marine currents, was most effective in reducing plagioclase and enhancing quartz content of arkosic sediment in the Minturn Formation near Marble Mountain. In general, the quartz-poor, sodic arkoses of the Sangre de Cristo Formation indicate little weathering in the source area or during transport.\r\n\r\nIron-titanium oxides and other heavy minerals, notably zircon and sphene, tend to be most abundant in the Sangre de Cristo Formation. Although concentrated locally as fluvial placers, the overall abundance of heavy minerals probably reflects lack of weathering and proximity to source.\r\n\r\nThe degree of weathering and destruction of unstable grains (feldspar and rock fragments) in the Minturn and Sangre de Cristo Formations of the Sangre de Cristo Range was dependent on rates of uplift and erosion as much as climate (wet versus dry). Reworking by marine currents further reduced the proportion of unstable grains during Minturn time. Sodic (plagioclase-rich), quartz-poor arkose in the coarse, conglomeratic Sangre de Cristo Formation is the product of rapid uplift and erosion.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00474","usgsCitation":"Lindsey, D.A., 2000, Petrology of arkosic sandstones, Pennsylvanian Minturn Formation and Pennsylvanian and Permian Sangre de Cristo Formation, Sangre de Cristo Range, Colorado - data and preliminary interpretations: U.S. Geological Survey Open-File Report 2000-474, 45 p., https://doi.org/10.3133/ofr00474.","productDescription":"45 p.","costCenters":[],"links":[{"id":160849,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2702,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0474/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a92e4b07f02db6576de","contributors":{"authors":[{"text":"Lindsey, D. A.","contributorId":49814,"corporation":false,"usgs":true,"family":"Lindsey","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":205278,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":40698,"text":"ofr99554C - 2000 - Digital isostatic gravity map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California","interactions":[],"lastModifiedDate":"2022-07-18T18:57:08.360077","indexId":"ofr99554C","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"99-554","chapter":"C","title":"Digital isostatic gravity map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California","docAbstract":"An isostatic gravity map of the Nevada Test Site area was prepared from publicly\r\navailable gravity data (Ponce, 1997) and from gravity data recently collected by the U.S. Geological Survey (Mankinen and others, 1999; Morin and Blakely, 1999). Gravity data were processed using standard gravity data reduction techniques. Southwest Nevada is characterized by gravity anomalies that reflect the distribution of pre-Cenozoic carbonate rocks, thick sequences of volcanic rocks, and thick alluvial basins. In addition, regional gravity data reveal the presence of linear features that reflect large-scale faults whereas detailed gravity data can indicate the presence of smaller-scale faults.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99554C","collaboration":"Prepared in cooperation with the Nevada Operations Office, U.S. Department of Energy","usgsCitation":"Ponce, D.A., Mankinen, E., Davidson, J.G., Morin, R.L., and Blakely, R., 2000, Digital isostatic gravity map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California (Online Version 1.1): U.S. Geological Survey Open-File Report 99-554, Report: 3 p.; 1 Plate: 36.00 x 45.30 inches, https://doi.org/10.3133/ofr99554C.","productDescription":"Report: 3 p.; 1 Plate: 36.00 x 45.30 inches","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":171338,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3676,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0554/","linkFileType":{"id":5,"text":"html"}},{"id":110074,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_25973.htm","linkFileType":{"id":5,"text":"html"},"description":"25973"}],"scale":"20000","projection":"Universal Transverse Mercator","country":"United States","state":"California, Nevada","county":"Clark County, Inyo County, Lincoln County, Nye County","otherGeospatial":"Nevada Test Site and vicinity","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117,\n 36.5\n ],\n [\n -115.875,\n 36.5\n ],\n [\n -115.875,\n 37.5\n ],\n [\n -117,\n 37.5\n ],\n [\n -117,\n 36.5\n ]\n ]\n ]\n }\n }\n ]\n}","edition":"Online Version 1.1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d605","contributors":{"authors":[{"text":"Ponce, David A. 0000-0003-4785-7354 ponce@usgs.gov","orcid":"https://orcid.org/0000-0003-4785-7354","contributorId":1049,"corporation":false,"usgs":true,"family":"Ponce","given":"David","email":"ponce@usgs.gov","middleInitial":"A.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":223802,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mankinen, E. A. 0000-0001-7496-2681","orcid":"https://orcid.org/0000-0001-7496-2681","contributorId":31786,"corporation":false,"usgs":true,"family":"Mankinen","given":"E. A.","affiliations":[],"preferred":false,"id":223804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davidson, J. G.","contributorId":11243,"corporation":false,"usgs":true,"family":"Davidson","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":223803,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Morin, R. L.","contributorId":95484,"corporation":false,"usgs":true,"family":"Morin","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":223806,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":223805,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":40742,"text":"ofr99554B - 2000 - Digital aeromagnetic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada and Inyo County, California","interactions":[],"lastModifiedDate":"2022-07-22T21:02:11.229336","indexId":"ofr99554B","displayToPublicDate":"2001-10-01T00:00:00","publicationYear":"2000","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":"99-554","chapter":"B","title":"Digital aeromagnetic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada and Inyo County, California","docAbstract":"An aeromagnetic map of the Nevada Test Site area was prepared from publicly available aeromagnetic data described by McCafferty and Grauch (1997). Magnetic surveys were processed using standard techniques. Southwest Nevada is characterized by magnetic anomalies that reflect the distribution of thick sequences of volcanic rocks, magnetic sedimentary rocks, and the occurrence of granitic rocks. In addition, aeromagnetic data reveal the presence of linear features that reflect faulting at both regional and local scales.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99554B","collaboration":"Prepared in cooperation with the Nevada Operations Office, U.S. Department of Energy","usgsCitation":"Ponce, D.A., 2000, Digital aeromagnetic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada and Inyo County, California (Online Version 1.1): U.S. Geological Survey Open-File Report 99-554, Report: 56 p.; Metadata; GIS Files, https://doi.org/10.3133/ofr99554B.","productDescription":"Report: 56 p.; Metadata; GIS Files","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":175898,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3681,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0554/","linkFileType":{"id":5,"text":"html"}},{"id":110073,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_25972.htm","linkFileType":{"id":5,"text":"html"},"description":"25972"}],"scale":"20000","projection":"Universal Transverse Mercator","country":"United States","state":"California, Nevada","county":"Clark County, Inyo County, Lincoln County, Nye County","otherGeospatial":"Nevada Test Site and vicinity","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117,\n 36.5\n ],\n [\n -115.875,\n 36.5\n ],\n [\n -115.875,\n 37.5\n ],\n [\n -117,\n 37.5\n ],\n [\n -117,\n 36.5\n ]\n ]\n ]\n }\n }\n ]\n}","edition":"Online Version 1.1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d67a","contributors":{"authors":[{"text":"Ponce, David A. 0000-0003-4785-7354 ponce@usgs.gov","orcid":"https://orcid.org/0000-0003-4785-7354","contributorId":1049,"corporation":false,"usgs":true,"family":"Ponce","given":"David","email":"ponce@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":223885,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23892,"text":"ofr00401 - 2000 - Towards policy relevant environmental modeling: contextual validity and pragmatic models","interactions":[],"lastModifiedDate":"2014-01-31T14:49:18","indexId":"ofr00401","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-401","title":"Towards policy relevant environmental modeling: contextual validity and pragmatic models","docAbstract":"\"What makes for a good model?\" In various forms, this question is a question that, undoubtedly, many people, businesses, and institutions ponder with regards to their particular domain of modeling. One particular domain that is wrestling with this question is the multidisciplinary field of environmental modeling. Examples of environmental models range from models of contaminated ground water flow to the economic impact of natural disasters, such as earthquakes. One of the distinguishing claims of the field is the relevancy of environmental modeling to policy and environment-related decision-making in general. A pervasive view by both scientists and decision-makers is that a \"good\" model is one that is an accurate predictor. Thus, determining whether a model is \"accurate\" or \"correct\" is done by comparing model output to empirical observations. The expected outcome of this process, usually referred to as \"validation\" or \"ground truthing,\" is a stamp on the model in question of \"valid\" or \"not valid\" that serves to indicate whether or not the model will be reliable before it is put into service in a decision-making context. In this paper, I begin by elaborating on the prevailing view of model validation and why this view must change. Drawing from concepts coming out of the studies of science and technology, I go on to propose a contextual view of validity that can overcome the problems associated with \"ground truthing\" models as an indicator of model goodness. The problem of how we talk about and determine model validity has much to do about how we perceive the utility of environmental models. In the remainder of the paper, I argue that we should adopt ideas of pragmatism in judging what makes for a good model and, in turn, developing good models. From such a perspective of model goodness, good environmental models should facilitate communication, convey—not bury or \"eliminate\"—uncertainties, and, thus, afford the active building of consensus decisions, instead of promoting passive or self-righteous decisions.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00401","issn":"0094-9140","usgsCitation":"Miles, S.B., 2000, Towards policy relevant environmental modeling: contextual validity and pragmatic models: U.S. Geological Survey Open-File Report 2000-401, 20 p., https://doi.org/10.3133/ofr00401.","productDescription":"20 p.","costCenters":[{"id":379,"text":"Menlo Park Science Center","active":false,"usgs":true}],"links":[{"id":281861,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr00401.PNG"},{"id":281860,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0401/pdf/of00-401.pdf"},{"id":281859,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0401/"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db6282ba","contributors":{"authors":[{"text":"Miles, Scott B.","contributorId":38600,"corporation":false,"usgs":true,"family":"Miles","given":"Scott","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":190918,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24017,"text":"ofr00354 - 2000 - Hawaiian Volcano Observatory: Summary 96; part 1, seismic data, January to December 1996, with a chronological summary","interactions":[],"lastModifiedDate":"2022-07-11T19:05:52.50726","indexId":"ofr00354","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-354","title":"Hawaiian Volcano Observatory: Summary 96; part 1, seismic data, January to December 1996, with a chronological summary","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00354","usgsCitation":"Nakata, J.S., Heliker, C., Thornber, C.R., and Sherrod, D.R., 2000, Hawaiian Volcano Observatory: Summary 96; part 1, seismic data, January to December 1996, with a chronological summary: U.S. Geological Survey Open-File Report 2000-354, i, 84 p., https://doi.org/10.3133/ofr00354.","productDescription":"i, 84 p.","costCenters":[],"links":[{"id":403427,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_32199.htm","linkFileType":{"id":5,"text":"html"}},{"id":53193,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0354/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":156720,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0354/report-thumb.jpg"}],"country":"United States","state":"Hawaii","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156.29150390625,\n 18.87510275035649\n ],\n [\n -154.70947265625,\n 18.87510275035649\n ],\n [\n -154.70947265625,\n 20.282808691330054\n ],\n [\n -156.29150390625,\n 20.282808691330054\n ],\n [\n -156.29150390625,\n 18.87510275035649\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6de4b07f02db63f0d6","contributors":{"authors":[{"text":"Nakata, Jennifer S.","contributorId":18364,"corporation":false,"usgs":true,"family":"Nakata","given":"Jennifer","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":191162,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heliker, C. C.","contributorId":70753,"corporation":false,"usgs":true,"family":"Heliker","given":"C. C.","affiliations":[],"preferred":false,"id":191163,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thornber, Carl R. cthornber@usgs.gov","contributorId":2016,"corporation":false,"usgs":true,"family":"Thornber","given":"Carl","email":"cthornber@usgs.gov","middleInitial":"R.","affiliations":[{"id":157,"text":"Cascades Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":191161,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sherrod, David R. 0000-0001-9460-0434 dsherrod@usgs.gov","orcid":"https://orcid.org/0000-0001-9460-0434","contributorId":527,"corporation":false,"usgs":true,"family":"Sherrod","given":"David","email":"dsherrod@usgs.gov","middleInitial":"R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":191160,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":23977,"text":"ofr0013 - 2000 - MORPH-II, a software package for the analysis of scanning-electron-micrograph images for the assessment of the fractal dimension of exposed stone surfaces","interactions":[{"subject":{"id":23976,"text":"ofr98248 - 1998 - MORPH-I (Ver 1.0) a software package for the analysis of scanning electron micrograph (binary formatted) images for the assessment of the fractal dimension of enclosed pore surfaces","indexId":"ofr98248","publicationYear":"1998","noYear":false,"title":"MORPH-I (Ver 1.0) a software package for the analysis of scanning electron micrograph (binary formatted) images for the assessment of the fractal dimension of enclosed pore surfaces"},"predicate":"SUPERSEDED_BY","object":{"id":23977,"text":"ofr0013 - 2000 - MORPH-II, a software package for the analysis of scanning-electron-micrograph images for the assessment of the fractal dimension of exposed stone surfaces","indexId":"ofr0013","publicationYear":"2000","noYear":false,"title":"MORPH-II, a software package for the analysis of scanning-electron-micrograph images for the assessment of the fractal dimension of exposed stone surfaces"},"id":1}],"lastModifiedDate":"2023-06-22T13:30:01.227675","indexId":"ofr0013","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-13","title":"MORPH-II, a software package for the analysis of scanning-electron-micrograph images for the assessment of the fractal dimension of exposed stone surfaces","docAbstract":"Turcotte, 1997, and Barton and La Pointe, 1995, have identified many potential uses for the fractal dimension in physicochemical models of surface properties. The image-analysis program described in this report is an extension of the program set MORPH-I (Mossotti and others, 1998), which provided the fractal analysis of electron-microscope images of pore profiles (Mossotti and Eldeeb, 1992). MORPH-II, an integration of the modified kernel of the program MORPH-I with image calibration and editing facilities, was designed to measure the fractal dimension of the exposed surfaces of stone specimens as imaged in cross section in an electron microscope.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr0013","issn":"0094-9140","usgsCitation":"Mossotti, V.G., and Eldeeb, A.R., 2000, MORPH-II, a software package for the analysis of scanning-electron-micrograph images for the assessment of the fractal dimension of exposed stone surfaces: U.S. Geological Survey Open-File Report 2000-13, Report: i, 42 p.; EDGE: source code, https://doi.org/10.3133/ofr0013.","productDescription":"Report: i, 42 p.; EDGE: source code","numberOfPages":"44","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":156231,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":280598,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0013/EDGE.EXE"},{"id":280599,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0013/pdf/of00-013.pdf"},{"id":1686,"rank":4,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0013/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db648d6f","contributors":{"authors":[{"text":"Mossotti, Victor G. mossotti@usgs.gov","contributorId":3494,"corporation":false,"usgs":true,"family":"Mossotti","given":"Victor","email":"mossotti@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":191077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eldeeb, A. Raouf","contributorId":64283,"corporation":false,"usgs":true,"family":"Eldeeb","given":"A.","email":"","middleInitial":"Raouf","affiliations":[],"preferred":false,"id":191078,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":24016,"text":"ofr00353 - 2000 - Hawaiian Volcano Observatory summary 95; Part 1, seismic data, January to December 1995, with a chronological summary","interactions":[],"lastModifiedDate":"2021-08-25T19:21:46.04469","indexId":"ofr00353","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-353","title":"Hawaiian Volcano Observatory summary 95; Part 1, seismic data, January to December 1995, with a chronological summary","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Department of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr00353","issn":"0094-9140","usgsCitation":"Nakata, J.S., Thornber, C.R., Reynolds, J., and Heliker, C., 2000, Hawaiian Volcano Observatory summary 95; Part 1, seismic data, January to December 1995, with a chronological summary: U.S. Geological Survey Open-File Report 2000-353, i, 69 p., https://doi.org/10.3133/ofr00353.","productDescription":"i, 69 p.","costCenters":[],"links":[{"id":157216,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0353/report-thumb.jpg"},{"id":53192,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0353/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":388496,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_32198.htm"}],"country":"United States","state":"Hawaii","otherGeospatial":"Hawaii Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156.24755859375,\n 18.885497977462876\n ],\n [\n -154.7589111328125,\n 18.885497977462876\n ],\n [\n -154.7589111328125,\n 20.2725032501349\n ],\n [\n -156.24755859375,\n 20.2725032501349\n ],\n [\n -156.24755859375,\n 18.885497977462876\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6de4b07f02db63f27d","contributors":{"authors":[{"text":"Nakata, Jennifer S.","contributorId":18364,"corporation":false,"usgs":true,"family":"Nakata","given":"Jennifer","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":191157,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thornber, Carl R. cthornber@usgs.gov","contributorId":2016,"corporation":false,"usgs":true,"family":"Thornber","given":"Carl","email":"cthornber@usgs.gov","middleInitial":"R.","affiliations":[{"id":157,"text":"Cascades Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":191156,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reynolds, Jennifer","contributorId":56683,"corporation":false,"usgs":true,"family":"Reynolds","given":"Jennifer","affiliations":[],"preferred":false,"id":191158,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Heliker, C. C.","contributorId":70753,"corporation":false,"usgs":true,"family":"Heliker","given":"C. C.","affiliations":[],"preferred":false,"id":191159,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":22053,"text":"ofr00403 - 2000 - Preliminary report on geophysics of the Verde River headwaters region, Arizona","interactions":[],"lastModifiedDate":"2023-06-22T13:29:21.339322","indexId":"ofr00403","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-403","title":"Preliminary report on geophysics of the Verde River headwaters region, Arizona","docAbstract":"This report summarizes the acquisition, data processing, and preliminary interpretation of a high-resolution aeromagnetic and radiometric survey near the confluence of the Big and Little Chino basins in the headwaters of the Verde River, Arizona. The goal of the aeromagnetic study is to improve understanding of the geologic framework as it affects groundwater flow, particularly in relation to the occurrence of springs in the upper Verde River headwaters region. Radiometric data were also collected to map surficial rocks and soils, thus aiding geologic mapping of the basin fill. Additional gravity data were collected to enhance existing coverage. \n\nBoth aeromagnetic and gravity data indicate a large gradient along the Big Chino fault, a fault with Quaternary movement. Filtered aeromagnetic data show other possible faults within the basin fill and areas where volcanic rocks are shallowly buried. Gravity lows associated with Big Chino and Williamson Valleys indicate potentially significant accumulations of low-density basin fill. The absence of a gravity low associated with Little Chino Valley indicates that high-density rocks are shallow. \n\nThe radiometric maps show higher radioactivity associated with the Tertiary latites and with the sediments derived from them. The surficial materials on the eastern side of the Big Chino Valley are significantly lower in radioactivity and reflect the materials derived from the limestone and basalt east of the valley. The dividing line between the low radioactivity materials to the east and the higher radioactiviy materials to the west coincides approximately with the major drainage system of the valley, locally known as Big Chino Wash. This feature is remarkably straight and is approximately parallel to the Big Chino Fault. The uranium map shows large areas with concentrations greater than 5 ppm eU, and we expect that these areas will have a significantly higher risk potential for indoor radon.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00403","issn":"0094-9140","usgsCitation":"Langenheim, V., Duval, J.S., Wirt, L., and DeWitt, E., 2000, Preliminary report on geophysics of the Verde River headwaters region, Arizona: U.S. Geological Survey Open-File Report 2000-403, 28 p., https://doi.org/10.3133/ofr00403.","productDescription":"28 p.","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":51510,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0403/pdf/of00-403n.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":153067,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0403/report-thumb.jpg"},{"id":1222,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0403/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Arizona","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -112.800407,34.606650 ], [ -112.800407,35.159775 ], [ -112.200279,35.159775 ], [ -112.200279,34.606650 ], [ -112.800407,34.606650 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aafe4b07f02db66cb58","contributors":{"authors":[{"text":"Langenheim, Victoria E. 0000-0003-2170-5213 zulanger@usgs.gov","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":1526,"corporation":false,"usgs":true,"family":"Langenheim","given":"Victoria E.","email":"zulanger@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":186872,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Duval, J. S.","contributorId":15200,"corporation":false,"usgs":true,"family":"Duval","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":186874,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wirt, Laurie","contributorId":13204,"corporation":false,"usgs":true,"family":"Wirt","given":"Laurie","affiliations":[],"preferred":false,"id":186873,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"DeWitt, Ed","contributorId":65081,"corporation":false,"usgs":true,"family":"DeWitt","given":"Ed","affiliations":[],"preferred":false,"id":186875,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":31155,"text":"ofr00222 - 2000 - Geologic map database of the El Mirage Lake area, San Bernardino and Los Angeles Counties, California","interactions":[],"lastModifiedDate":"2023-06-22T13:30:44.132683","indexId":"ofr00222","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-222","title":"Geologic map database of the El Mirage Lake area, San Bernardino and Los Angeles Counties, California","docAbstract":"This geologic map database for the El Mirage Lake area describes geologic materials for the dry lake, parts of the adjacent Shadow Mountains and Adobe Mountain, and much of the piedmont extending south from the lake upward toward the San Gabriel Mountains. This area lies within the western Mojave Desert of San Bernardino and Los Angeles Counties, southeastern California. The area is traversed by a few paved highways that service the community of El Mirage, and by numerous dirt roads that lead to outlying properties. An off-highway vehicle area established by the Bureau of Land Management encompasses the dry lake and much of the land north and east of the lake. The physiography of the area consists of the dry lake, flanking mud and sand flats and alluvial piedmonts, and a few sharp craggy mountains.\n\nThis digital geologic map database, intended for use at 1:24,000-scale, describes and portrays the rock units and surficial deposits of the El Mirage Lake area. The map database was prepared to aid in a water-resource assessment of the area by providing surface geologic information with which deepergroundwater-bearing units may be understood. The area mapped covers the Shadow Mountains SE and parts of the Shadow Mountains, Adobe Mountain, and El Mirage 7.5-minute quadrangles. The map includes detailed geology of surface and bedrock deposits, which represent a significant update from previous bedrock geologic maps by Dibblee (1960) and Troxel and Gunderson (1970), and the surficial geologic map of Ponti and Burke (1980); it incorporates a fringe of the detailed bedrock mapping in the Shadow Mountains by Martin (1992). The map data were assembled as a digital database using ARC/INFO to enable wider applications than traditional paper-product geologic maps and to provide for efficient meshing with other digital data bases prepared by the U.S. Geological Survey's Southern California Areal Mapping Project.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00222","usgsCitation":"Miller, D., and Bedford, D., 2000, Geologic map database of the El Mirage Lake area, San Bernardino and Los Angeles Counties, California: U.S. Geological Survey Open-File Report 2000-222, Report: PDF, 27 p., TXT file, EPS file; 6 Metadata files; Complete digital package; 3 Plates: 40.03 x 50.03 inches and smaller; 3 EPS.GZ files, https://doi.org/10.3133/ofr00222.","productDescription":"Report: PDF, 27 p., TXT file, EPS file; 6 Metadata files; Complete digital package; 3 Plates: 40.03 x 50.03 inches and smaller; 3 EPS.GZ files","numberOfPages":"27","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":160857,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr00222.gif"},{"id":281570,"rank":11,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0222/pdf/of00-222_5c.pdf"},{"id":281569,"rank":12,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0222/pdf/of00-222_5b.pdf"},{"id":281568,"rank":13,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0222/pdf/of00-222_5a.pdf"},{"id":281567,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_3i.tar.gz"},{"id":281566,"rank":5,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_4e.xml"},{"id":281565,"rank":6,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_4d.sgml"},{"id":281564,"rank":7,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_4b.html"},{"id":281563,"rank":8,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_4c.html"},{"id":281562,"rank":9,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222_4a.txt"},{"id":281561,"rank":10,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2000/0222/of00-222revs1.txt"},{"id":281560,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0222/pdf/of00-222_2c.pdf"},{"id":281559,"rank":4,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0222/"}],"country":"United States","state":"California","county":"San Bernardino County;Los Angeles County","otherGeospatial":"El Mirage Lake Area","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117.691,34.5 ], [ -117.691,34.734 ], [ -117.5,34.734 ], [ -117.5,34.5 ], [ -117.691,34.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b12e4b07f02db6a2f0e","contributors":{"authors":[{"text":"Miller, David M. 0000-0003-3711-0441 dmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-3711-0441","contributorId":1707,"corporation":false,"usgs":true,"family":"Miller","given":"David M.","email":"dmiller@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":205160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bedford, David R.","contributorId":26352,"corporation":false,"usgs":true,"family":"Bedford","given":"David R.","affiliations":[],"preferred":false,"id":205161,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":21600,"text":"ofr00274 - 2000 - Archive of Boomer subbottom data collected during USGS cruise MGNM 99023 southern Long Island, NY inner shelf and Hudson Shelf Valley 26-31 July, 1999","interactions":[],"lastModifiedDate":"2012-02-02T00:07:49","indexId":"ofr00274","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-274","title":"Archive of Boomer subbottom data collected during USGS cruise MGNM 99023 southern Long Island, NY inner shelf and Hudson Shelf Valley 26-31 July, 1999","language":"ENGLISH","publisher":"United States Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center,","doi":"10.3133/ofr00274","issn":"0566-8174","usgsCitation":"Thieler, E.R., Hill, J.C., Brooks, R., Gutierrez, B., Irwin, B., and Nichols, D., 2000, Archive of Boomer subbottom data collected during USGS cruise MGNM 99023 southern Long Island, NY inner shelf and Hudson Shelf Valley 26-31 July, 1999: U.S. Geological Survey Open-File Report 2000-274, 6 computer optical discs :col. ill., col. maps ;4 3/4 in., https://doi.org/10.3133/ofr00274.","productDescription":"6 computer optical discs :col. ill., col. maps ;4 3/4 in.","costCenters":[],"links":[{"id":153705,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679db0","contributors":{"authors":[{"text":"Thieler, E. Robert 0000-0003-4311-9717 rthieler@usgs.gov","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":2488,"corporation":false,"usgs":true,"family":"Thieler","given":"E.","email":"rthieler@usgs.gov","middleInitial":"Robert","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":184836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, J. C.","contributorId":100878,"corporation":false,"usgs":true,"family":"Hill","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":184839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brooks, Robert","contributorId":102099,"corporation":false,"usgs":true,"family":"Brooks","given":"Robert","affiliations":[],"preferred":false,"id":184840,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gutierrez, Benjamin","contributorId":82341,"corporation":false,"usgs":true,"family":"Gutierrez","given":"Benjamin","affiliations":[],"preferred":false,"id":184838,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Irwin, B.J.","contributorId":105684,"corporation":false,"usgs":true,"family":"Irwin","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":184841,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nichols, D.R.","contributorId":42979,"corporation":false,"usgs":true,"family":"Nichols","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":184837,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":21599,"text":"ofr00153 - 2000 - Archive of Boomer subbottom data collected during USGS cruise ATSV 99044, Myrtle Beach, South Carolina, 29 October - 12 November, 1999","interactions":[],"lastModifiedDate":"2012-02-02T00:07:49","indexId":"ofr00153","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-153","title":"Archive of Boomer subbottom data collected during USGS cruise ATSV 99044, Myrtle Beach, South Carolina, 29 October - 12 November, 1999","language":"ENGLISH","publisher":"United States Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center,","doi":"10.3133/ofr00153","issn":"0566-8174","usgsCitation":"Hill, J.C., Schwab, W.C., Dadisman, S.V., Danforth, W.W., Denny, J.F., O’Brien, T., and Parolski, K.F., 2000, Archive of Boomer subbottom data collected during USGS cruise ATSV 99044, Myrtle Beach, South Carolina, 29 October - 12 November, 1999: U.S. Geological Survey Open-File Report 2000-153, 18 computer optical discs :col. ill., col. maps ;4 3/4 in., in 18 plastic boxes 11 x 15 x 1 cm., https://doi.org/10.3133/ofr00153.","productDescription":"18 computer optical discs :col. ill., col. maps ;4 3/4 in., in 18 plastic boxes 11 x 15 x 1 cm.","costCenters":[],"links":[{"id":153704,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679e02","contributors":{"authors":[{"text":"Hill, Jenna C. 0000-0002-7475-357X","orcid":"https://orcid.org/0000-0002-7475-357X","contributorId":21987,"corporation":false,"usgs":true,"family":"Hill","given":"Jenna","email":"","middleInitial":"C.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":184831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schwab, W. C.","contributorId":78740,"corporation":false,"usgs":true,"family":"Schwab","given":"W.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":184832,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dadisman, S. V.","contributorId":98735,"corporation":false,"usgs":true,"family":"Dadisman","given":"S.","middleInitial":"V.","affiliations":[],"preferred":false,"id":184834,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Danforth, W. W.","contributorId":16386,"corporation":false,"usgs":true,"family":"Danforth","given":"W.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":184830,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Denny, J. F.","contributorId":13653,"corporation":false,"usgs":true,"family":"Denny","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":184829,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"O’Brien, T.F.","contributorId":86309,"corporation":false,"usgs":true,"family":"O’Brien","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":184833,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Parolski, K. F.","contributorId":99173,"corporation":false,"usgs":true,"family":"Parolski","given":"K.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":184835,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":21597,"text":"ofr00142 - 2000 - Archive of boomer and sparker subbottom data collected during USGS Cruise DIAN 97032, Long Island, NY inner shelf; Fire Island, NY 25 September-19 October, 1997","interactions":[],"lastModifiedDate":"2012-08-24T17:16:23","indexId":"ofr00142","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-142","title":"Archive of boomer and sparker subbottom data collected during USGS Cruise DIAN 97032, Long Island, NY inner shelf; Fire Island, NY 25 September-19 October, 1997","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr00142","issn":"0566-8174","usgsCitation":"Hill, J.C., Thieler, E., Foster, D., Swift, B., and O’Brien, T., 2000, Archive of boomer and sparker subbottom data collected during USGS Cruise DIAN 97032, Long Island, NY inner shelf; Fire Island, NY 25 September-19 October, 1997: U.S. Geological Survey Open-File Report 2000-142, 15 computer optical discs :col. ill., col. maps ;4 3/4 in., https://doi.org/10.3133/ofr00142.","productDescription":"15 computer optical discs :col. ill., col. maps ;4 3/4 in.","costCenters":[],"links":[{"id":153694,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":259833,"rank":9999,"type":{"id":23,"text":"Spatial Data"},"url":"https://woodshole.er.usgs.gov/publications/of00-142/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679d3c","contributors":{"authors":[{"text":"Hill, Jenna C. 0000-0002-7475-357X","orcid":"https://orcid.org/0000-0002-7475-357X","contributorId":21987,"corporation":false,"usgs":true,"family":"Hill","given":"Jenna","email":"","middleInitial":"C.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":184820,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thieler, E.R. 0000-0003-4311-9717","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":93082,"corporation":false,"usgs":true,"family":"Thieler","given":"E.R.","affiliations":[],"preferred":false,"id":184824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foster, D.S.","contributorId":30641,"corporation":false,"usgs":true,"family":"Foster","given":"D.S.","email":"","affiliations":[],"preferred":false,"id":184821,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swift, B.A.","contributorId":32937,"corporation":false,"usgs":true,"family":"Swift","given":"B.A.","affiliations":[],"preferred":false,"id":184822,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"O’Brien, T.F.","contributorId":86309,"corporation":false,"usgs":true,"family":"O’Brien","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":184823,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":21603,"text":"ofr00152 - 2000 - Archive of datasonic SIS-1000 CHIRP subbottom data collected during USGS Cruise DIAN 97032, Long Island, New York Inner Shelf; Fire Island, New York 25 September-19 October, 1997","interactions":[],"lastModifiedDate":"2012-08-24T17:16:23","indexId":"ofr00152","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-152","title":"Archive of datasonic SIS-1000 CHIRP subbottom data collected during USGS Cruise DIAN 97032, Long Island, New York Inner Shelf; Fire Island, New York 25 September-19 October, 1997","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr00152","issn":"0566-8174","usgsCitation":"Hill, J.C., Thieler, E., Foster, D., Swift, B., and O’Brien, T., 2000, Archive of datasonic SIS-1000 CHIRP subbottom data collected during USGS Cruise DIAN 97032, Long Island, New York Inner Shelf; Fire Island, New York 25 September-19 October, 1997: U.S. Geological Survey Open-File Report 2000-152, 11 computer optical discs :col. ill., col. maps ;4 3/4 in., https://doi.org/10.3133/ofr00152.","productDescription":"11 computer optical discs :col. ill., col. maps ;4 3/4 in.","costCenters":[],"links":[{"id":154090,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":259834,"rank":9999,"type":{"id":23,"text":"Spatial Data"},"url":"https://woodshole.er.usgs.gov/publications/of00-152/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679c3f","contributors":{"authors":[{"text":"Hill, Jenna C. 0000-0002-7475-357X","orcid":"https://orcid.org/0000-0002-7475-357X","contributorId":21987,"corporation":false,"usgs":true,"family":"Hill","given":"Jenna","email":"","middleInitial":"C.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":184853,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thieler, E.R. 0000-0003-4311-9717","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":93082,"corporation":false,"usgs":true,"family":"Thieler","given":"E.R.","affiliations":[],"preferred":false,"id":184857,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foster, D.S.","contributorId":30641,"corporation":false,"usgs":true,"family":"Foster","given":"D.S.","email":"","affiliations":[],"preferred":false,"id":184854,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swift, B.A.","contributorId":32937,"corporation":false,"usgs":true,"family":"Swift","given":"B.A.","affiliations":[],"preferred":false,"id":184855,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"O’Brien, T.F.","contributorId":86309,"corporation":false,"usgs":true,"family":"O’Brien","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":184856,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":23840,"text":"ofr00371 - 2000 - Ground geophysical study of the Buckeye mine tailings, Boulder watershed, Montana","interactions":[],"lastModifiedDate":"2020-02-26T19:21:15","indexId":"ofr00371","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-371","title":"Ground geophysical study of the Buckeye mine tailings, Boulder watershed, Montana","docAbstract":"The Buckeye mine site is located in the Boulder River watershed along Basin Creek, in northern Jefferson County, Montana. This project is part of the Boulder River watershed Abandoned Mine Lands Initiative, and is a collaborative effort between the U.S. Geological Survey and Bureau of Land Management in the U.S. Department of the Interior, and the U.S. Forest Service in the U.S. Department of Agriculture. The site includes a large flotation milltailing deposit, which extends to the stream and meadows below the mine. These tailings contain elevated levels of metals, such as silver, cadmium, copper, lead, and zinc. Metal-rich fluvial tailings containing these metals, are possible sources of ground and surface water contamination. Geophysical methods were used to characterize the sediments at the Buckeye mine site. Ground geophysical surveys, including electromagnetics, DC resistivity, and total field magnetic methods, were used to delineate anomalies that probably correlate with subsurface metal contamination. Subsurface conductivity was mapped using EM-31 and EM-34 terrain conductivity measuring systems. The conductivity maps represent variation of concentration of dissolved solids in the subsurface from a few meters, to an approximate depth of 30 meters. Conductive sulfides several centimeters thick were encountered in a shallow trench, dug in an area of very high conductivity, at a depth of approximately 1 to1.5 meters. Laboratory measurements of samples of the sulfide layers show the conductivity is on the order of 1000 millisiemens. DC resistivity soundings were used to quantify subsurface conductivity variations and to estimate the depth to bedrock. Total field magnetic measurements were used to identify magnetic metals in the subsurface. The EM surveys identified several areas of relatively high conductivity and detected a conductive plume extending to the southwest, toward the stream. This plume correlates well with the potentiometric surface and direction of ground water flow, and with water quality data from monitoring wells in and around the tailings. The electrical geophysical data suggests there has been vertical migration of high dissolved solids. A DC sounding made on a nearby granite outcrop to the north of the mine showed that the shallow conductivity is on the order of 5 millisiemens/m. Granite underlying the mine tailings, with similar electrical properties as the outcropping area, may be more than 30 meters deep.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00371","issn":"0094-9140","usgsCitation":"McDougal, R., and Smith, B.D., 2000, Ground geophysical study of the Buckeye mine tailings, Boulder watershed, Montana: U.S. Geological Survey Open-File Report 2000-371, 55 p., https://doi.org/10.3133/ofr00371.","productDescription":"55 p.","costCenters":[{"id":102,"text":"Abandoned Mine Lands Initiative","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":156569,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":341961,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0371/ofr-00-0371.pdf","text":"Report","size":"11 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":1574,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0371/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Montana","county":"Jefferson County","otherGeospatial":" Basin Creek, Boulder River watershed, Buckeye mine","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -112.4066162109375,\n 46.375\n ],\n [\n -112.25,\n 46.375\n ],\n [\n -112.25,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.375\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66dcdf","contributors":{"authors":[{"text":"McDougal, Robert R.","contributorId":53418,"corporation":false,"usgs":true,"family":"McDougal","given":"Robert R.","affiliations":[],"preferred":false,"id":190839,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Bruce D. 0000-0002-1643-2997 bsmith@usgs.gov","orcid":"https://orcid.org/0000-0002-1643-2997","contributorId":845,"corporation":false,"usgs":true,"family":"Smith","given":"Bruce","email":"bsmith@usgs.gov","middleInitial":"D.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":190838,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31172,"text":"ofr00366 - 2000 - Archive of datasonics SIS-1000 CHIRP subbottom data collected during USGS cruise DIAN 96040, Fire Island, New York, 4-24 September 1996","interactions":[],"lastModifiedDate":"2012-08-24T17:16:23","indexId":"ofr00366","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-366","title":"Archive of datasonics SIS-1000 CHIRP subbottom data collected during USGS cruise DIAN 96040, Fire Island, New York, 4-24 September 1996","language":"ENGLISH","doi":"10.3133/ofr00366","usgsCitation":"Hill, J.C., Schwab, W.C., and Foster, D., 2000, Archive of datasonics SIS-1000 CHIRP subbottom data collected during USGS cruise DIAN 96040, Fire Island, New York, 4-24 September 1996: U.S. Geological Survey Open-File Report 2000-366, Six discs. , https://doi.org/10.3133/ofr00366.","productDescription":"Six discs. ","costCenters":[],"links":[{"id":161053,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":259839,"rank":9999,"type":{"id":23,"text":"Spatial Data"},"url":"https://woodshole.er.usgs.gov/publications/of00-366/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679c39","contributors":{"authors":[{"text":"Hill, J. C.","contributorId":100878,"corporation":false,"usgs":true,"family":"Hill","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":205215,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schwab, W. 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Scientists of the United States Geological Survey (USGS) are attempting to ascertain life history, distribution, and abundance, and to determine the effects of commercial fishing in the park (Carlson et al., 1998). Statistical sampling studies suggest that seafloor characteristics and bathymetry affect the distribution, abundance and behavior of benthic species. Examples include the distribution of Dungeness crab which varies from 78 to 2012 crabs/ha in nearshore areas to depths of 18 m (O'Clair et al., 1995), and changes in halibut foraging behavior according to bottom type (Chilton et al., 1995).\n\nThis report discusses geophysical data collected within the park in 1998. The geophysical surveying done in this and previous studies will be combined with existing population and sonic-tracking data sets as well as future sediment sampling, scuba, submersible, and bottom video camera observations to better understand Dungeness crab and Pacific halibut habitat relationships.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr0032","usgsCitation":"Cochrane, G.R., Carlson, P.R., Boyle, M.E., Gabel, G.L., and Hooge, P.N., 2000, Physical characteristics of dungeness crab and halibut habitats in Whidbey Passage, Alaska: U.S. Geological Survey Open-File Report 2000-32, HTML document, https://doi.org/10.3133/ofr0032.","productDescription":"HTML document","onlineOnly":"Y","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":1156,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0032/","linkFileType":{"id":5,"text":"html"}},{"id":153890,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr0032.jpg"},{"id":280836,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0032/objectives.html"}],"country":"United States","state":"Alaska","otherGeospatial":"Glacier Bay;Whidbey Passage","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -136.5574,58.3528 ], [ -136.5574,58.7471 ], [ -135.7562,58.7471 ], [ -135.7562,58.3528 ], [ -136.5574,58.3528 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acfe4b07f02db680089","contributors":{"authors":[{"text":"Cochrane, Guy R. 0000-0002-8094-4583 gcochrane@usgs.gov","orcid":"https://orcid.org/0000-0002-8094-4583","contributorId":2870,"corporation":false,"usgs":true,"family":"Cochrane","given":"Guy","email":"gcochrane@usgs.gov","middleInitial":"R.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":185346,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carlson, Paul R.","contributorId":81469,"corporation":false,"usgs":true,"family":"Carlson","given":"Paul","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":185349,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Boyle, Michael E.","contributorId":7963,"corporation":false,"usgs":true,"family":"Boyle","given":"Michael","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":185347,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gabel, Gregory L.","contributorId":97763,"corporation":false,"usgs":true,"family":"Gabel","given":"Gregory","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":185350,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hooge, Philip N.","contributorId":52029,"corporation":false,"usgs":true,"family":"Hooge","given":"Philip","email":"","middleInitial":"N.","affiliations":[{"id":106,"text":"Alaska Biological Science Center","active":false,"usgs":true}],"preferred":false,"id":185348,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":22126,"text":"ofr00402 - 2000 - Rock geochemistry in the Tuscarora Mountains, northern Carlin Trend, Nevada","interactions":[],"lastModifiedDate":"2012-02-02T00:08:01","indexId":"ofr00402","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-402","title":"Rock geochemistry in the Tuscarora Mountains, northern Carlin Trend, Nevada","language":"ENGLISH","publisher":"U.S. Department of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr00402","issn":"0094-9140","usgsCitation":"Theodore, T.G., Kotlyar, B.B., Singer, D., Berger, V., Moring, B.C., and Cluer, J., 2000, Rock geochemistry in the Tuscarora Mountains, northern Carlin Trend, Nevada: U.S. Geological Survey Open-File Report 2000-402, iii, 125 p. :col. ill., maps (some col.) ;28 cm., https://doi.org/10.3133/ofr00402.","productDescription":"iii, 125 p. :col. ill., maps (some col.) ;28 cm.","costCenters":[],"links":[{"id":154941,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0402/report-thumb.jpg"},{"id":51575,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0402/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d687","contributors":{"authors":[{"text":"Theodore, T. 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The survey covers an area of approximately 7,700 km2 (2,970 mi2), extending from Beatty, Nevada, to south of Shoshone, California, and includes parts of the Nevada Test Site and Death Valley National Park. Aeromagnetic flight lines were oriented east-west, spaced 400 m (0.25 mi) apart, and flown at an altitude of 150 m (500 ft) above terrain, or as low as permitted by safety considerations. Characteristic magnetic anomalies occur over volcanic terranes, such as Yucca Mountain and the Greenwater Range, and over Proterozoic basement rocks, such as Bare Mountain and the Black Mountains. Linear magnetic anomalies caused by offsets of volcanic rocks permit detailed mapping of shallow faults in volcanic terranes. Of particular interest are subtle anomalies that overlie alluvial deposits at Devils Hole and Pahrump Valley. Alignments of springs along magnetic anomalies at these locales suggest that these anomalies are caused by faults that cut the alluvium, displace magnetic rocks at depth, and eventually influence ground-water flow. Linear magnetic anomalies over the Funeral Mountains appear to coincide with a prominent set of north-northeast-striking faults that cut the Precambrian Stirling Quartzite, rocks that are typically nonmagnetic. The position and orientation of these anomalies with respect to springs north of Furnace Creek suggest that the faults may act as conduits for the flow of water from the north into Death Valley, but the mineralogical cause of the anomalies is unknown.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr2000188","usgsCitation":"Blakely, R.J., Langenheim, V., Ponce, D.A., and Dixon, G.L., 2000, Aeromagnetic Survey of the Amargosa Desert, Nevada and California: A Tool for Understanding Near-Surface Geology and Hydrology (Online Version 1.0): U.S. Geological Survey Open-File Report 2000-188, Report: 39 p.; 2 Plates: each 21 x 27 inches; Data, https://doi.org/10.3133/ofr2000188.","productDescription":"Report: 39 p.; 2 Plates: each 21 x 27 inches; Data","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":314,"text":"Geophysics Unit of Menlo Park, CA (GUMP)","active":false,"usgs":true}],"links":[{"id":110101,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_29221.htm","linkFileType":{"id":5,"text":"html"},"description":"29221"},{"id":153527,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10723,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/of00-188/","linkFileType":{"id":5,"text":"html"}}],"scale":"250000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117,35.75 ], [ -117,37 ], [ -115.5,37 ], [ -115.5,35.75 ], [ -117,35.75 ] ] ] } } ] }","edition":"Online Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b02e4b07f02db698a19","contributors":{"authors":[{"text":"Blakely, Richard J. 0000-0003-1701-5236 blakely@usgs.gov","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":1540,"corporation":false,"usgs":true,"family":"Blakely","given":"Richard","email":"blakely@usgs.gov","middleInitial":"J.","affiliations":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":184715,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langenheim, Victoria E. 0000-0003-2170-5213 zulanger@usgs.gov","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":1526,"corporation":false,"usgs":true,"family":"Langenheim","given":"Victoria E.","email":"zulanger@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":184714,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ponce, David A. 0000-0003-4785-7354 ponce@usgs.gov","orcid":"https://orcid.org/0000-0003-4785-7354","contributorId":1049,"corporation":false,"usgs":true,"family":"Ponce","given":"David","email":"ponce@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":184713,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dixon, Gary L.","contributorId":23571,"corporation":false,"usgs":true,"family":"Dixon","given":"Gary","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":184716,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":22246,"text":"ofr00358 - 2000 - USGS East-Coast sediment analysis: Procedures, database, and georeferenced displays","interactions":[{"subject":{"id":22246,"text":"ofr00358 - 2000 - USGS East-Coast sediment analysis: Procedures, database, and georeferenced displays","indexId":"ofr00358","publicationYear":"2000","noYear":false,"title":"USGS East-Coast sediment analysis: Procedures, database, and georeferenced displays"},"predicate":"SUPERSEDED_BY","object":{"id":72791,"text":"ofr20051001 - 2005 - USGS east-coast sediment analysis: Procedures, database, and GIS data","indexId":"ofr20051001","publicationYear":"2005","noYear":false,"title":"USGS east-coast sediment analysis: Procedures, database, and GIS data"},"id":1}],"supersededBy":{"id":72791,"text":"ofr20051001 - 2005 - USGS east-coast sediment analysis: Procedures, database, and GIS data","indexId":"ofr20051001","publicationYear":"2005","noYear":false,"title":"USGS east-coast sediment analysis: Procedures, database, and GIS data"},"lastModifiedDate":"2024-05-28T13:50:11.733969","indexId":"ofr00358","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-358","title":"USGS East-Coast sediment analysis: Procedures, database, and georeferenced displays","docAbstract":"No abstract available.
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F.","contributorId":13618,"corporation":false,"usgs":true,"family":"Polloni","given":"C.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":187763,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":24918,"text":"ofr00360 - 2000 - A ground electromagnetic survey used to map sulfides and acid sulfate ground waters at the abandoned Cabin Branch Mine, Prince William Forest Park, northern Virginia gold-pyrite belt","interactions":[],"lastModifiedDate":"2023-09-13T15:37:47.955091","indexId":"ofr00360","displayToPublicDate":"2001-09-01T00:00:00","publicationYear":"2000","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":"2000-360","title":"A ground electromagnetic survey used to map sulfides and acid sulfate ground waters at the abandoned Cabin Branch Mine, Prince William Forest Park, northern Virginia gold-pyrite belt","docAbstract":"INTRODUCTION AND BACKGROUND: Prince William Forest Park is situated at the northeastern end of the Virginia Gold-Pyrite belt northwest of the town of Dumfries, VA. The U. S. Marine Corps Reservation at Quantico borders the park on the west and south, and occupies part of the same watershed. Two abandoned mines are found within the park: the Cabin Branch pyrite mine, a historic source of acid mine drainage, and the Greenwood gold mine, a source of mercury contamination. Both are within the watershed of Quantico Creek (Fig.1). The Cabin Branch mine (also known as the Dumfries mine) lies about 2.4 km northwest of the town of Dumfries. It exploited a 300 meter-long, lens-shaped body of massive sulfide ore hosted by metamorphosed volcanic rocks; during its history over 200,000 tons of ore were extracted and processed locally. The site became part of the National Capitol Region of the National Park Service in 1940 and is currently managed by the National Park Service. In 1995 the National Park Service, in cooperation with the Virginia Department of Mines, Minerals, and Energy reclaimed the Cabin Branch site. The Virginia Gold-Pyrite belt, also known as the central Virginia volcanic-plutonic belt, is host to numerous abandoned metal mines (Pavlides and others, 1982), including the Cabin Branch deposit. The belt itself extends from its northern terminus near Cabin Branch, about 50 km south of Washington, D.C., approximately 175 km to the southwest into central Virginia. It is underlain by metamorphosed volcanic and clastic (non-carbonate) sedimentary rocks, originally deposited approximately 460 million years ago during the Ordovician Period (Horton and others, 1998). Three kinds of deposits are found in the belt: volcanic-associated massive sulfide deposits, low-sulfide quartz-gold vein deposits, and gold placer deposits. The massive sulfide deposits such as Cabin Branch were historically mined for their sulfur, copper, zinc, and lead contents, but also yielded byproduct gold and silver. The environmental impact of massive sulfide deposits can be substantial. These deposits are characterized by high concentrations of heavy-metal sulfide minerals, hosted by silicate rocks. Thus, weathering of these deposits and their mine wastes has the potential to generate heavy-metal laden sulfuric acid that can have negative impacts on aquatic ecosystems. In addition, lead associated with solid mine wastes has the potential for human health impacts through ingestion. The heavy metals that are encountered in these deposits and are most likely to cause environmental impacts include copper, zinc, lead, cadmium, and arsenic. In addition, the weathering of pyrite releases large amounts of iron, and the acid generated attacks the country rocks and causes the release of large amounts of aluminum, which also can severely impact aquatic ecosystems. A reclamation attempt was made at the site in 1995, including construction of storm-water diversion trenches around the abandoned mine area, grading tailings away from the stream bank, addition of pulverized limestone and topsoil, and revegetation. The post-reclamation chemistry of shallow groundwaters (<3 meters deep) shows a neutral pH on the southwestern bank of the stream but pH of 4.1 to 4.5 on the northeastern bank. The dominant ions are Fe2+ and SO42- (Seal, Haffner, Meier, and Pollio, 1999) A ground electromagnetic survey was conducted over the site in 1999 as part of a wider study ( Seal, Haffner, and Meier, 1998a,b, 1999). It was hoped that a 3-D map of the soil conductivity derived from the survey could provide insight into the distribution of the mobilized sulfides present under the ground.
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