{"pageNumber":"150","pageRowStart":"3725","pageSize":"25","recordCount":4111,"records":[{"id":10271,"text":"ofr81730 - 1981 - Analytical results of 78 water samples from Domeland Wilderness and adjacent further planning areas (RARE II), California","interactions":[],"lastModifiedDate":"2012-02-02T00:06:22","indexId":"ofr81730","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-730","title":"Analytical results of 78 water samples from Domeland Wilderness and adjacent further planning areas (RARE II), California","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr81730","usgsCitation":"McHugh, J., Ficklin, W.H., and Miller, W.R., 1981, Analytical results of 78 water samples from Domeland Wilderness and adjacent further planning areas (RARE II), California: U.S. Geological Survey Open-File Report 81-730, i, 17 p.  :maps ;28 cm., https://doi.org/10.3133/ofr81730.","productDescription":"i, 17 p.  :maps ;28 cm.","costCenters":[],"links":[{"id":142594,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0730/report-thumb.jpg"},{"id":38128,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0730/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c71f","contributors":{"authors":[{"text":"McHugh, John B.","contributorId":64651,"corporation":false,"usgs":true,"family":"McHugh","given":"John B.","affiliations":[],"preferred":false,"id":161112,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ficklin, Walter H.","contributorId":52565,"corporation":false,"usgs":true,"family":"Ficklin","given":"Walter","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":161110,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, W. Roger","contributorId":60191,"corporation":false,"usgs":true,"family":"Miller","given":"W.","email":"","middleInitial":"Roger","affiliations":[],"preferred":false,"id":161111,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":60265,"text":"mf1201A - 1981 - Geologic map of the Mokelumne Wilderness and contiguous RARE II Further Planning Areas, central Sierra Nevada, California","interactions":[],"lastModifiedDate":"2012-02-10T00:10:33","indexId":"mf1201A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1201","chapter":"A","title":"Geologic map of the Mokelumne Wilderness and contiguous RARE II Further Planning Areas, central Sierra Nevada, California","language":"ENGLISH","doi":"10.3133/mf1201A","usgsCitation":"McKee, E., and Howe, R., 1981, Geologic map of the Mokelumne Wilderness and contiguous RARE II Further Planning Areas, central Sierra Nevada, California: U.S. Geological Survey Miscellaneous Field Studies Map 1201, 1 map ;69 x 69 cm., https://doi.org/10.3133/mf1201A.","productDescription":"1 map ;69 x 69 cm.","costCenters":[],"links":[{"id":180353,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":105568,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6627.htm","linkFileType":{"id":5,"text":"html"},"description":"6627"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.25,38.416666666666664 ], [ -120.25,38.75 ], [ -119.75,38.75 ], [ -119.75,38.416666666666664 ], [ -120.25,38.416666666666664 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db6968f3","contributors":{"authors":[{"text":"McKee, E.H.","contributorId":20736,"corporation":false,"usgs":true,"family":"McKee","given":"E.H.","email":"","affiliations":[],"preferred":false,"id":263412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Howe, R.A.","contributorId":44616,"corporation":false,"usgs":true,"family":"Howe","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":263413,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":7418,"text":"ofr81788 - 1981 - A potential resource target identified in the Hoover Wilderness and adjoining RARE II study areas, California","interactions":[],"lastModifiedDate":"2021-11-26T20:56:02.281291","indexId":"ofr81788","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-788","title":"A potential resource target identified in the Hoover Wilderness and adjoining RARE II study areas, California","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr81788","usgsCitation":"Tooker, E.W., Brem, G.F., Chaffee, M., and Plouff, D., 1981, A potential resource target identified in the Hoover Wilderness and adjoining RARE II study areas, California: U.S. Geological Survey Open-File Report 81-788, i, 8 p., https://doi.org/10.3133/ofr81788.","productDescription":"i, 8 p.","costCenters":[],"links":[{"id":392146,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_75539.htm"},{"id":34827,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0788/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":141518,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0788/report-thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Hoover Wilderness and adjoining RARE II study areas","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.5733,\n              38.365\n            ],\n            [\n              -119.3667,\n              38.365\n            ],\n            [\n              -119.3667,\n              38.2194\n            ],\n            [\n              -119.5733,\n              38.2194\n            ],\n            [\n              -119.5733,\n              38.365\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1fe4b07f02db6ab66e","contributors":{"authors":[{"text":"Tooker, Edwin Wilson","contributorId":33295,"corporation":false,"usgs":true,"family":"Tooker","given":"Edwin","email":"","middleInitial":"Wilson","affiliations":[],"preferred":false,"id":155529,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brem, G. F.","contributorId":94276,"corporation":false,"usgs":true,"family":"Brem","given":"G.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":155530,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chaffee, M.A.","contributorId":108049,"corporation":false,"usgs":true,"family":"Chaffee","given":"M.A.","affiliations":[],"preferred":false,"id":155532,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Plouff, Donald","contributorId":94657,"corporation":false,"usgs":true,"family":"Plouff","given":"Donald","email":"","affiliations":[],"preferred":false,"id":155531,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":58926,"text":"mf1271C - 1981 - Maps showing mines, quarries, prospects, and exposures in the Cheat Mountain Roadless Area, Randolph County, West Virginia","interactions":[],"lastModifiedDate":"2016-08-22T09:46:36","indexId":"mf1271C","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1271","chapter":"C","title":"Maps showing mines, quarries, prospects, and exposures in the Cheat Mountain Roadless Area, Randolph County, West Virginia","docAbstract":"<p>The Wilderness Act (Public Law 88-577, September 3, 1964) and related acts require the U.S. Geological Survey and the U.S. Bureau of Mines to survey certain areas on Federal lands to determine their mineral resource potential. Results must be made available to the public and be submitted to the President and the Congress. This report presents the results of a mineral survey of the&nbsp;Cheat Mountain Roadless Area in the Monongahela National Forest,&nbsp;Randolph County, West Virginia. The area was designated as a further planning area during the Second Roadless Area Review and Evaluation (RARE II) by the U.S. Forest Service, January 1979.</p>\n<p>The&nbsp;Cheat Mountain Roadless Area is in the Greenbrier Ranger District of the&nbsp;Monongahela National Forest, east-central West Virginia. It is located in Randolph County about 10 mi southeast of Elkins, W.Va., and is accessible there via U.S. 219-250 to Beverly, W.Va., and then southeastward along an improved country road. From the east, the study area can be reached via U.S. 33 and by a paved country road that extends from Alpena, W.Va. to the village of Bemis. Unimproved Forest service roads, abandoned logging railroad grades, and primitive trails provide access by foot or horseback into the interior of the study area.</p>\n<p>Physiographically, the&nbsp;Cheat Mountain Roadless Area is in the Allegheny Mountain section of the Appalachian Plateaus province and is situated at the eastern edge of the Appalachian coal region. Cheat Mountain, a northeast-trending ridge, is bordered on the west by the right fork of Files Creek and on the east by Shavers Fork and its tributaries. Most of the area occupies an elevated plateau capped by resistant sandstone and conglomerate. Altitudes range form 2,320 ft on Lime Kiln Run to more than 3,900 ft on Cheat Mountain. The topography ranges from relatively flat in the uplands to very steep in the canyons along tributaries of Shavers Fork. The area is heavily forested with vegetation varying from mixed hardwoods on the western slope of Cheat Mountain to thickets of conifers in the uplands. Hemlocks are sparsely interspersed and red spruce, the dominant tree at higher elevations prior to logging in the mid 1920's, is again reforesting upland areas. Rhododendron and laurel flourish in moist protected areas along drainage courses and in coves.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf1271C","usgsCitation":"Behum, P.T., and Hammack, R.W., 1981, Maps showing mines, quarries, prospects, and exposures in the Cheat Mountain Roadless Area, Randolph County, West Virginia: U.S. Geological Survey Miscellaneous Field Studies Map 1271, 32.93 x 39.62 inches, https://doi.org/10.3133/mf1271C.","productDescription":"32.93 x 39.62 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":183725,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/mf1271C.PNG"},{"id":327160,"rank":1,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1271-C/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"West Virginia","county":"Randolph County","otherGeospatial":"Cheat Mountain Roadless Area, Monongahela National Forest","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -79.86749999999999,38.700833333333335 ], [ -79.86749999999999,38.8675 ], [ -79.70083333333334,38.8675 ], [ -79.70083333333334,38.700833333333335 ], [ -79.86749999999999,38.700833333333335 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db605ce1","contributors":{"authors":[{"text":"Behum, Paul T.","contributorId":86894,"corporation":false,"usgs":true,"family":"Behum","given":"Paul","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":261107,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hammack, Richard W.","contributorId":150019,"corporation":false,"usgs":false,"family":"Hammack","given":"Richard","email":"","middleInitial":"W.","affiliations":[{"id":17887,"text":"National Energy Technology Laboratory, Department of Energy","active":true,"usgs":false}],"preferred":false,"id":261106,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":42527,"text":"ofr79576T - 1981 - Preliminary map of rare-earth provinces in the conterminous United States","interactions":[],"lastModifiedDate":"2012-02-02T00:11:06","indexId":"ofr79576T","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"79-576","chapter":"T","title":"Preliminary map of rare-earth provinces in the conterminous United States","language":"ENGLISH","doi":"10.3133/ofr79576T","usgsCitation":"Staatz, M.H., and Armbrustmacher, T.J., 1981, Preliminary map of rare-earth provinces in the conterminous United States: U.S. Geological Survey Open-File Report 79-576, 1 map ;63 x 98 cm., https://doi.org/10.3133/ofr79576T.","productDescription":"1 map ;63 x 98 cm.","costCenters":[],"links":[{"id":168869,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":80274,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1979/0576t/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db6969ff","contributors":{"authors":[{"text":"Staatz, Mortimer Hay","contributorId":39754,"corporation":false,"usgs":true,"family":"Staatz","given":"Mortimer","email":"","middleInitial":"Hay","affiliations":[],"preferred":false,"id":226647,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Armbrustmacher, Theodore J.","contributorId":31376,"corporation":false,"usgs":true,"family":"Armbrustmacher","given":"Theodore","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":226646,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":60117,"text":"mf1243C - 1981 - Complete Bouguer gravity map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana","interactions":[],"lastModifiedDate":"2019-06-17T11:14:17","indexId":"mf1243C","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1243","chapter":"C","title":"Complete Bouguer gravity map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/mf1243C","usgsCitation":"Long, C.L., 1981, Complete Bouguer gravity map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana: U.S. Geological Survey Miscellaneous Field Studies Map 1243, 1 Plate: 47.13 x 31.11 inches, https://doi.org/10.3133/mf1243C.","productDescription":"1 Plate: 47.13 x 31.11 inches","costCenters":[],"links":[{"id":364560,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1243-C/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":180599,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/1243-C/report-thumb.jpg"}],"scale":"0","country":"United States","state":"Montana","county":"Fergus County, Golden Valley County, Wheatland County","otherGeospatial":"Big Snowies Wilderness","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -109.75,46.5 ], [ -109.75,47 ], [ -109,47 ], [ -109,46.5 ], [ -109.75,46.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a83f2","contributors":{"authors":[{"text":"Long, C. L.","contributorId":98699,"corporation":false,"usgs":true,"family":"Long","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":263151,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":60116,"text":"mf1243B - 1981 - Aeromagnetic map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana","interactions":[],"lastModifiedDate":"2019-06-17T11:18:34","indexId":"mf1243B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1243","chapter":"B","title":"Aeromagnetic map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/mf1243B","usgsCitation":"Long, C.L., 1981, Aeromagnetic map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland counties, Montana: U.S. Geological Survey Miscellaneous Field Studies Map 1243, 1 Plate: 37.59 x 30.82 inches, https://doi.org/10.3133/mf1243B.","productDescription":"1 Plate: 37.59 x 30.82 inches","costCenters":[],"links":[{"id":364561,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1243-B/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":180542,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/1243-B/report-thumb.jpg"}],"scale":"0","country":"United States","state":"Montana","county":"Fergus County, Golden Valley County, Wheatland County","otherGeospatial":"Big Snowies Wilderness","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -109.75,46.5 ], [ -109.75,47 ], [ -109,47 ], [ -109,46.5 ], [ -109.75,46.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db69717a","contributors":{"authors":[{"text":"Long, C. L.","contributorId":98699,"corporation":false,"usgs":true,"family":"Long","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":263150,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":32602,"text":"pp1049C - 1981 - Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado","interactions":[],"lastModifiedDate":"2012-02-02T00:09:19","indexId":"pp1049C","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1049","chapter":"C","title":"Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado","docAbstract":"Alkalic igneous rocks and related concentrations of thorium, niobium, rare-earth elements, titanium, and other elements have long been known in the Powderhorn mining district and have been explored intermittently for several decades. The deposits formed chiefly about 570 m.y. (million years) ago in latest Precambrian or Early Cambrian time. They were emplaced in lower Proterozoic (Proterozoic X) metasedimentary, metavolcanic, and plutonic rocks. \r\n\r\nThe complex of alkalic rocks of Iron Hill occupies 31 km 2 (square kilometers) and is composed of pyroxenite, uncompahgrite, ijolite, nepheline syenite, and carbonatite, in order of generally decreasing age. Fenite occurs in a zone, in places more than 0.6 km (kilometer) wide, around a large part of the margin of the complex and adjacent to alkalic dikes intruding Precambrian host rock. The alkalic rocks have a radioactivity, chiefly due to thorium, greater than that of the surrounding Powderhorn Granite (Proterozoic X) and metamorphic rocks. The pyroxenite, uncompahgrite, ijolite, and nepheline syenite, which form more than 80 percent of the complex, have fairly uniform radioactivity. Radioactivity in the carbonatite stock, carbonatite dikes, and the carbonatite-pyroxenite mixed rock zone, however, generally exceeds that in the other rocks of the complex. \r\n\r\nThe thorium concentrations in the Powderhorn district occur in six types of deposits: thorite veins, a large massive carbonatite body, carbonatite dikes, trachyte dikes, magnetite-ilmeniteperovskite dikes or segregations, and disseminations in small, anomalously radioactive plutons chiefly of granite or quartz syenite that are older than rocks of the alkalic complex. \r\n\r\nThe highest grade thorium concentrations in the district are in veins that commonly occur in steeply dipping, crosscutting shear or breccia zones in the Precambrian rocks. They range in thickness from a centimeter or less to 5 m (meters) and are as much as 1 km long. The thorite veins are composed chiefly of potassic feldspar, white to smoky quartz, calcite, barite, goethite, and hematite, and also contain thorite, jasper, magnetite, pyrite, galena, chalcopyrite, sphalerite, synchysite, apatite, fluorite, biotite, sodic amphibole, rutile, monazite, bastnaesite, and vanadinite. The Th0 2 content of the thorite veins ranges from less than 0.01 percent to as much as 4.9 percent in high-grade samples. The Th0 2 content is generally less than 1 percent, however, and is only 0.05 to 0.1 percent in many of the veins examined in the district. \r\n\r\nSamples of the dolomitic carbonatite of Iron Hill mostly range from 3 to 145 ppm (parts per million) thorium. Thirty samples of the carbonatite dikes, the most radioactive rocks within the complex of Iron Hill, contain about 30 to 3,200 ppm thorium and a trace to about 1.5 percent rare-earth oxides. \r\n\r\nThe magnetite-ilmenite-perovskite rocks have a radioactivity of 2 to 12 times the background of Precambrian granite that is attributable chiefly to thorium substitution for calcium in the perovskite. In two analyses the perovskite contains 0.12 and 0.15 percent Th0 2 . \r\n\r\nTrachyte dikes as much as 25 m thick cut the Precambrian rocks; their radioactivity is generally about two to four times the background of typical Precambrian granite, is locally higher, but is low relative to other types of thorium concentrations. A finegrained granite that is anomalously radioactive occurs in thick, dikelike plutons as much as 1.2 km wide, or more. The thorium content varies widely within the granite bodies. Eight samples of the granite contain 32 to 281 ppm thorium (averaging 115 ppm). \r\n\r\nThe economic potential of thorium in the Powderhorn district is related in part to other elements such as niobium, titanium, iron, and rare earths. The proportions of niobium and rare earths to thorium vary in different parts of the district. Within the carbonatite body of Iron Hill, the Nb 2 0 5 content greatly exceeds Th0 2 , but the Th0 2 -Nb 2 0 5 ","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Geology and resources of thorium in the United States","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","doi":"10.3133/pp1049C","usgsCitation":"Olson, J.C., and Hedlund, D.C., 1981, Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado: U.S. Geological Survey Professional Paper 1049, p. C1-C34, https://doi.org/10.3133/pp1049C.","productDescription":"p. C1-C34","costCenters":[],"links":[{"id":164392,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1049c/report-thumb.jpg"},{"id":60459,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1049c/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae0e4b07f02db687f88","contributors":{"authors":[{"text":"Olson, J. C.","contributorId":55403,"corporation":false,"usgs":true,"family":"Olson","given":"J.","middleInitial":"C.","affiliations":[],"preferred":false,"id":208766,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hedlund, D. C.","contributorId":101624,"corporation":false,"usgs":true,"family":"Hedlund","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":208767,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":60263,"text":"mf1317A - 1981 - Geologic map of the Benton Range Further Planning (RARE II) Area, Mono County, California","interactions":[],"lastModifiedDate":"2012-02-10T00:10:33","indexId":"mf1317A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1317","chapter":"A","title":"Geologic map of the Benton Range Further Planning (RARE II) Area, Mono County, California","language":"ENGLISH","doi":"10.3133/mf1317A","usgsCitation":"McKee, E., and Donahoe, J.L., 1981, Geologic map of the Benton Range Further Planning (RARE II) Area, Mono County, California: U.S. Geological Survey Miscellaneous Field Studies Map 1317, 1 map ;44 x 37 cm. on sheet 61 x 81 cm., https://doi.org/10.3133/mf1317A.","productDescription":"1 map ;44 x 37 cm. on sheet 61 x 81 cm.","costCenters":[],"links":[{"id":105740,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6947.htm","linkFileType":{"id":5,"text":"html"},"description":"6947"},{"id":180351,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -118.66666666666667,37.583333333333336 ], [ -118.66666666666667,37.833333333333336 ], [ -118.41666666666667,37.833333333333336 ], [ -118.41666666666667,37.583333333333336 ], [ -118.66666666666667,37.583333333333336 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b0ee4b07f02db69fbd5","contributors":{"authors":[{"text":"McKee, E.H.","contributorId":20736,"corporation":false,"usgs":true,"family":"McKee","given":"E.H.","email":"","affiliations":[],"preferred":false,"id":263409,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Donahoe, J. L.","contributorId":20404,"corporation":false,"usgs":true,"family":"Donahoe","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":263408,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":60612,"text":"mf1201B - 1981 - Aeromagnetic map of the Mokelumne Wilderness and contiguous Rare II further planning areas, central Sierra Nevada, California","interactions":[],"lastModifiedDate":"2014-04-25T06:45:57","indexId":"mf1201B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1201","chapter":"B","title":"Aeromagnetic map of the Mokelumne Wilderness and contiguous Rare II further planning areas, central Sierra Nevada, California","docAbstract":"<p>The aeromagnetic map consists of parts of two surveys flown at an altitude of 300 m above the average ground surface. One survey (west park of the map_ centered over the Mokelumne Wilderness was flowing in a northeast-southwest direction along slight lines spaced at a horizontal interval of about 800 m (U>S> Geological Survey, 1979b). The survey to the east is part of a regional survey flown in an east-west direction along flight lines spaced at an interval of about 1,600 m (U.S. Geological Survey, 1979a). The join of the aeromagnetic contours along the border between the two surveys is generally conformable. The contour datum of the eastern regional survey, however, is about 650 nT (nanotesla) lower than the Mokelumne Wilderness survey because of difference in data reduction.</p>\n<br>\n<p>The aeromagnetic pattern reflects variations of magnetization within the underlying rocks, but the pattern is complicated by strong topographic effects. That is, magnetic anomaly maxima tend to occur over ridges and hilltops and minima over canyons and depressions. The topographic effect exists mostly because a constant ground clearance could not be maintained at normal aircraft speeds in this area of rugged topographic relief. The recorded flight altitude varied from 30 m to nearly 1,500 m above the ground with local changes that approard 1,000 m in distances of less than 5,000 m.</p>\n<br>\n<p>Four magnetic anomalies that can be related to geologic features are discusses., Magnetic highs or lows cause by topography are not discussed.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/mf1201B","usgsCitation":"Plouff, D., and McKee, E.H., 1981, Aeromagnetic map of the Mokelumne Wilderness and contiguous Rare II further planning areas, central Sierra Nevada, California: U.S. Geological Survey Miscellaneous Field Studies Map 1201, Map: 37.01 x 33.97 inches, https://doi.org/10.3133/mf1201B.","productDescription":"Map: 37.01 x 33.97 inches","costCenters":[],"links":[{"id":286554,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":286553,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1201-B/plate-1.pdf"}],"scale":"62500","datum":"National Geodetic Vertical Datum of 1929","country":"United States","state":"California","otherGeospatial":"Sierra Nevada","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.25,38.416667 ], [ -120.25,38.75 ], [ -119.75,38.75 ], [ -119.75,38.416667 ], [ -120.25,38.416667 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af4e4b07f02db691d73","contributors":{"authors":[{"text":"Plouff, Donald","contributorId":94657,"corporation":false,"usgs":true,"family":"Plouff","given":"Donald","email":"","affiliations":[],"preferred":false,"id":264079,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McKee, Edwin H. mckee@usgs.gov","contributorId":3728,"corporation":false,"usgs":true,"family":"McKee","given":"Edwin","email":"mckee@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":264078,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":7207,"text":"ofr82414 - 1981 - Gold placer and Quaternary stratigraphy of the Jabal Mokhyat area, southern Najd Province, Kingdom of Saudi Arabia","interactions":[],"lastModifiedDate":"2012-02-02T00:06:00","indexId":"ofr82414","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"82-414","title":"Gold placer and Quaternary stratigraphy of the Jabal Mokhyat area, southern Najd Province, Kingdom of Saudi Arabia","docAbstract":"An ancient gold placer at Jabal Mokhyat (lat 20?12.2'N., long 43?28'E.), about 90 km east of Qalat Bishah in the southern Najd Province, Kingdom of Saudi Arabia, was studied in 1973. Seven hundred and twenty-eight samples in 25 measured sections were collected along trenches and pits 2.5 m in depth and 2,600 m in total length. Alluvium was thicker than the excavation depth along about 50 percent of the trench length. The average gold content was 4.4 mg per m3, and the highest grade trench contained 40 mg gold per m 3. Because fine particulate gold is rare in the alluvium, a few large particles, 1 to 5 mm in diameter, greatly affected the sampling results. The ancient placer diggings are in small headwater wadis distributed over a 30-km 2 area, and the total dug area is about 1.2 km2. The placer produced an estimated 50 kg of gold and was worked about 2,600 + 250 years ago. The potential for a present-day placer operation is small. \r\n\r\nThe gold is sparsely distributed in locally derived, flood-deposited, immature gravels throughout a stratigraphic section that consists of 1) calichified, saprolitic bedrock of Precambrian age; 2) basal, intensely calichified, saprolitic gravel (0-3 m thick) of Pleistocene age; 3) disconformable, slightly consolidated gravel and sand (0-1 m thick) of late Pleistocene age containing sparse, disseminated caliche; 4) firm loessic silt (0-1 m thick) of early Holocene age; and 5) loose sand and gravel (0.3-1 m thick) of late Holocene age. The loessic silt accumulated during the Holocene pluvial. The top of the loessic silt unit is dated at about 6,000 years B.P. by using charcoal from hearths of ancient man. Following the Holocene pluvial, the climate became arid, and extreme desiccation resulted in abundant eolian sand that progressively diluted the late Holocene gravels. The remnants of the pre-Holocene stratigraphy suggest similar climatic cycles during the Pleistocene.\r\n\r\nAbundant, sparsely mineralized, gold-bearing quartz veins (0-1 m wide) were the source of the placer gold. These late Proterozoic veins have hydrothermally altered wall-rock zones (1-5 m wide). The veins are dispersed over an area of 50 km 2. Though many veins were prospected in ancient times and some were slightly worked, only the Mokhyat ancient mine, located on a quartz-vein zone 30 m wide by 200 m long, was extensively worked. The quartz contains chalcopyrite, galena, sphalerite, tetrahedrite, an unidentified bismuth mineral, and small amounts of dispersed gold. \r\n\r\nThe fissure quartz veins lie at the complexly splayed, terminal end of a small northwest-trending Najd fault that elsewhere along strike has ii km of left-lateral displacement. Most large veins are in north-trending vertical fractures where the stresses were distributed along an older, north-trending structural grain in andesitic greenstone terrane. Subhorizontal fracture sets contain conspicuous, well-developed gold-bearing quartz veins and associated alteration zones. These attest to the shallowness and youthfulness of mineralization during latest Precambrian time.\r\n\r\nLate Precambrian granitic plutons (625-600 m.y. old) had been deeply eroded before the gold minerals were emplaced; hence, the gold is not related to granitic plutonism. Abundant, widely distributed diabasic dikes associated with the Najd faulting event of latest Precambrian age were probably the heat source for the hydrothermal convection system and possibly the source of the gold.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr82414","usgsCitation":"Schmidt, D.L., Puffett, W., Campbell, W.L., and Al-Koulak, Z., 1981, Gold placer and Quaternary stratigraphy of the Jabal Mokhyat area, southern Najd Province, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 82-414, 76 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr82414.","productDescription":"76 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":140817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1982/0414/report-thumb.jpg"},{"id":34606,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1982/0414/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34607,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1982/0414/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34608,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1982/0414/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abde4b07f02db674032","contributors":{"authors":[{"text":"Schmidt, D. L.","contributorId":23934,"corporation":false,"usgs":true,"family":"Schmidt","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":154760,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Puffett, W.P.","contributorId":93919,"corporation":false,"usgs":true,"family":"Puffett","given":"W.P.","email":"","affiliations":[],"preferred":false,"id":154763,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Campbell, W. L.","contributorId":46939,"corporation":false,"usgs":true,"family":"Campbell","given":"W.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":154761,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Al-Koulak, Z. H.","contributorId":78981,"corporation":false,"usgs":true,"family":"Al-Koulak","given":"Z. H.","affiliations":[],"preferred":false,"id":154762,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":7313,"text":"ofr81661 - 1981 - Methodology, statistical analysis, and listing of the spectrographic analysis of geochemical samples, Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico","interactions":[],"lastModifiedDate":"2012-02-02T00:06:05","indexId":"ofr81661","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-661","title":"Methodology, statistical analysis, and listing of the spectrographic analysis of geochemical samples, Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr81661","usgsCitation":"Hassemer, J.R., Watts, K.C., Forn, C., and Mosier, E.L., 1981, Methodology, statistical analysis, and listing of the spectrographic analysis of geochemical samples, Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico: U.S. Geological Survey Open-File Report 81-661, i, 138 p.  :maps ;28 cm., https://doi.org/10.3133/ofr81661.","productDescription":"i, 138 p.  :maps ;28 cm.","costCenters":[],"links":[{"id":140494,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0661/report-thumb.jpg"},{"id":34703,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0661/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db62a030","contributors":{"authors":[{"text":"Hassemer, Jerry R.","contributorId":79448,"corporation":false,"usgs":true,"family":"Hassemer","given":"Jerry","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":155181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Watts, K. C.","contributorId":49344,"corporation":false,"usgs":true,"family":"Watts","given":"K.","middleInitial":"C.","affiliations":[],"preferred":false,"id":155179,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Forn, C.L.","contributorId":46935,"corporation":false,"usgs":true,"family":"Forn","given":"C.L.","affiliations":[],"preferred":false,"id":155178,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mosier, E. L.","contributorId":71537,"corporation":false,"usgs":true,"family":"Mosier","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":155180,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":10077,"text":"ofr81151 - 1981 - Principal facts for gravity stations in the Big Snowies Wilderness and contiguous RARE II Study Areas, Fergus, Golden Valley, and Wheatland counties, Montana","interactions":[],"lastModifiedDate":"2012-02-02T00:06:27","indexId":"ofr81151","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-151","title":"Principal facts for gravity stations in the Big Snowies Wilderness and contiguous RARE II Study Areas, Fergus, Golden Valley, and Wheatland counties, Montana","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr81151","usgsCitation":"Long, C.L., 1981, Principal facts for gravity stations in the Big Snowies Wilderness and contiguous RARE II Study Areas, Fergus, Golden Valley, and Wheatland counties, Montana: U.S. Geological Survey Open-File Report 81-151, 12 p. ;28 cm., https://doi.org/10.3133/ofr81151.","productDescription":"12 p. ;28 cm.","costCenters":[],"links":[{"id":143100,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0151/report-thumb.jpg"},{"id":37933,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0151/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db667c77","contributors":{"authors":[{"text":"Long, Carl L.","contributorId":32128,"corporation":false,"usgs":true,"family":"Long","given":"Carl","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":160781,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":60224,"text":"mf1344B - 1981 - Geophysical surveys of the Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico","interactions":[],"lastModifiedDate":"2012-02-10T00:10:21","indexId":"mf1344B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1344","chapter":"B","title":"Geophysical surveys of the Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico","language":"ENGLISH","doi":"10.3133/mf1344B","usgsCitation":"Martin, R., 1981, Geophysical surveys of the Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map 1344, 2 maps ;49 x 38 cm. on 1 sheet 86 x 102 cm., https://doi.org/10.3133/mf1344B.","productDescription":"2 maps ;49 x 38 cm. on 1 sheet 86 x 102 cm.","costCenters":[],"links":[{"id":105769,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6995.htm","linkFileType":{"id":5,"text":"html"},"description":"6995"},{"id":182617,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -109.16666666666667,32.8675 ], [ -109.16666666666667,33.15 ], [ -108.91666666666667,33.15 ], [ -108.91666666666667,32.8675 ], [ -109.16666666666667,32.8675 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac7e4b07f02db67b470","contributors":{"authors":[{"text":"Martin, R.A.","contributorId":53379,"corporation":false,"usgs":true,"family":"Martin","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":263345,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":60650,"text":"mf1344A - 1981 - Geologic map of the Hells Hole further planning area (RARE II) Greenlee County, Arizona, and Grant County, New Mexico","interactions":[],"lastModifiedDate":"2012-02-10T00:10:39","indexId":"mf1344A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1344","chapter":"A","title":"Geologic map of the Hells Hole further planning area (RARE II) Greenlee County, Arizona, and Grant County, New Mexico","language":"ENGLISH","doi":"10.3133/mf1344A","usgsCitation":"Ratte, J., and Hedlund, D.C., 1981, Geologic map of the Hells Hole further planning area (RARE II) Greenlee County, Arizona, and Grant County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map 1344, 1 map ;45 x 26 cm. on sheet 69 x 99 cm. folded in envelope 25 x 32 cm., https://doi.org/10.3133/mf1344A.","productDescription":"1 map ;45 x 26 cm. on sheet 69 x 99 cm. folded in envelope 25 x 32 cm.","costCenters":[],"links":[{"id":105768,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6994.htm","linkFileType":{"id":5,"text":"html"},"description":"6994"},{"id":180085,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -109.25,32.75 ], [ -109.25,33.25 ], [ -108.75,33.25 ], [ -108.75,32.75 ], [ -109.25,32.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db698087","contributors":{"authors":[{"text":"Ratte, J.C.","contributorId":10416,"corporation":false,"usgs":true,"family":"Ratte","given":"J.C.","affiliations":[],"preferred":false,"id":264135,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hedlund, D. C.","contributorId":101624,"corporation":false,"usgs":true,"family":"Hedlund","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":264136,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":5847,"text":"pp1205 - 1981 - The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont","interactions":[],"lastModifiedDate":"2021-09-14T19:06:43.500379","indexId":"pp1205","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1205","title":"The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont","docAbstract":"The newly named Accotink Schist and Lake Barcroft Metasandstone of the Eastern Fairfax sequence are the structurally lowest metamorphic rocks in the northernmost Piedmont of Virginia. The Accotink consists of beds of pelitic schist that have thin basal intervals containing graded, very fine grained metasiltstone, as well as interbeds of metasandstone like that in the overlying Lake Barcroft Metasandstone. The unit is characterized by the Bouma turbidite sequences Te and Tde and can be assigned to turbidite facies D and E. The thickness of the Accotink is not known because its base is not exposed. \r\n\r\nThe Accotink Schist grades up into the Lake Barcroft Metasandstone, which consists of two types of metasandstone. Type I metaarenite is quartzofeldspathic granofels which forms thick sequences of amalgamated beds that can best be described as belonging to the Bouma turbidite sequence Ta and to turbidite facies B 2 . Type II metagraywacke of the Lake Barcroft Metasandstone consists of micaceous metagraywacke in thin to medium beds, which can be described as belonging to the Buoma turbidite sequences Tabe and (or) Tae and to turbidite facies C. The Lake Barcroft Metasandstone appears to be about 400 m thick. It and the Accotink Schist are thought to represent a coarsening-upward sequence of an outer submarine-fan association of rocks. \r\n\r\nThe Eastern Fairfax sequence is overlain by the Sykesville Formation. We believe that this contact is a movement surface upon which the Sykesville was emplaced by subaqueous sliding. The Sykesville contains isoclinally folded fragments, thought to be rip-ups, of Accotink and Lake Barcroft rocks. The Eastern Fairfax sequence is intruded by rocks of the Occoquan Granite batholith, which contains pendants of isoclinally folded schist and metagraywacke. Mter intrusion, the metasedimentary and plutonic rocks were folded together. Gamet and chlorite porphyroblasts within the Eastern Fairfax sequence appear to be related to the emplacement of the batholith. The minimum age of the Eastern Fairfax sequence is that of the Occoquan Granite batholith, currently thought to be about 560 m.y. The sequence, then, is considered to be of Early Cambrian age or older. The Accotink Schist and Lake Barcroft Metasandstone have some lithic similarity to the Loch Raven Schist and Oella Formation of Crowley (1976) of the Baltimore area, but a correlation is very uncertain at this time. \r\n\r\nThe newly named Popes Head Formation overlies all other metasedimentary and transported meta-igneous rocks in northernmost Virginia west ofthe Occoquan Granite batholith and is intruded by the batholith. The Popes Head consists of a lower Old Mill Branch Metasiltstone Member and an upper Station Hills Phyllite Member. The Old Mill Branch consists largely of alternating coarser and finer grained strata that are mostly fine- to very fine grained, mineralogically quite mature graded metasiltstone, which can be described as belonging to Bouma turbidite sequence Tbde and (or) Tde, more rarely Tcde. The metasiltstone contains interbedded intervals in which both felsic and mafic metatuff contain pristine euhedral crystals of igneous minerals. We believe that the metatuff represents ash-fall deposits. The Old Mill Branch appears to be about 730 m thick. \r\n\r\nThe Old Mill Branch grades up into the Station Hills Phyllite Member, which consists of thin- to medium-bedded pelitic phyllite and smaller amounts of very fine grained metasiltstone. The metasiltstone beds are graded, and many phyllite beds appear to have basal in- tervals containing graded, very fine grained metasiltstone. These beds can be described as belonging to Bouma turbidite sequence Tde. The Station Hills has intervals containing chlorite-rich phyllite, which probably represents mafic metatuff. No felsic metatuff has been recognized. The top of the Station Hills is not known, neither therefore, is its thickness. This unit appears to have a maximum thickness of about 300 m in northern","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1205","usgsCitation":"Drake, A., and Lyttle, P.T., 1981, The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont: U.S. Geological Survey Professional Paper 1205, Report: iv, 16 p.; 12.50 × 26.00 inches, https://doi.org/10.3133/pp1205.","productDescription":"Report: iv, 16 p.; 12.50 × 26.00 inches","costCenters":[],"links":[{"id":104571,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_4752.htm","linkFileType":{"id":5,"text":"html"},"description":"4752"},{"id":32626,"rank":301,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1205/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":32625,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/pp/1205/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":121841,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1205/report-thumb.jpg"}],"country":"United States","state":"Virginia","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -77.46185302734375,\n              38.494443887725055\n            ],\n            [\n              -77.069091796875,\n              38.494443887725055\n            ],\n            [\n              -77.069091796875,\n              38.97862765746913\n            ],\n            [\n              -77.46185302734375,\n              38.97862765746913\n            ],\n            [\n              -77.46185302734375,\n              38.494443887725055\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad5e4b07f02db683669","contributors":{"authors":[{"text":"Drake, Avery Ala","contributorId":65460,"corporation":false,"usgs":true,"family":"Drake","given":"Avery Ala","affiliations":[],"preferred":false,"id":151676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lyttle, Peter T. plyttle@usgs.gov","contributorId":293,"corporation":false,"usgs":true,"family":"Lyttle","given":"Peter","email":"plyttle@usgs.gov","middleInitial":"T.","affiliations":[],"preferred":true,"id":151675,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":8504,"text":"ofr81539 - 1981 - Hydrology of the coal-resource areas in the upper drainages of Huntington and Cottonwood creeks, central Utah","interactions":[],"lastModifiedDate":"2022-08-15T18:16:56.208692","indexId":"ofr81539","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-539","title":"Hydrology of the coal-resource areas in the upper drainages of Huntington and Cottonwood creeks, central Utah","docAbstract":"<p>The hydrology of coal-resource areas in the upper drainages of Huntington and Cottonwood Creeks in central Utah was studied in order to better define the hydrologic system, to identify the hydrologic effects of underground coal mining, and to devise methods to detect the effects.</p><p>Discharge records from gaging stations in this mountainous area indicated that there are large differences in the annual discharge of streams per unit area of drainage. These differences are attributed to differences in precipitation, differences in evaporation and sublimation of the snowpack, and to subsurface movement of water out of some basins. Surface waters sampled during 1977-79 were of good chemical quality; dissolved-solids concentrations rarely exceeded 500 milligrams per liter.</p><p>The Star Point Sandstone and the lower coal-bearing part of the Blackhawk Formation, both of Cretaceous age, are saturated in some areas, and the aquifer yields water to underground coal mines. Most of the larger discharging springs in the study area issue from the Star Point-Blackhawk aquifer where faulted. Ground water also occurs in several water-bearing zones above the Star Point-Blackhawk aquifer. It is not known whether the water in these overlying units is part of a continuous zone of saturation or whether unsaturated zones occur between units and some water is perched.</p><p>Dissolved-solids concentrations in water from about 140 springs ranged from 50 to 750 milligrams per liter. The chemical characteristics of water from the water-bearing zones of different formations usually were very similar.</p><p>Dewatering of underground coal mines was the largest manmade discharge from the Star Point-Blackhawk aquifer in the study area during 1979. The dewatering of mines has decreased the amount of water in storage in the aquifer, but water-level data were not available to define the extent of the depletion. Other possible impacts due to mine dewatering include the diminution of spring flows and increases in ground-water recharge, both of which are more likely to occur where rocks have been fractured due to subsidence above mines. Also, the flows of streams that receive water discharged from mines probably have increased accordingly. The discharge of mine water into streams causes some degradation in surface-water quality, but the quality of ground water is probably not adversely affected by mining.</p><p>Some environmental changes associated with underground mining are difficult to detect without data collected over a long period. With respect to the ground-water system, the year-to-year similarity of spring-discharge recession curves may provide a method to detect some of these changes. Changes in the benthic-invertebrate population may help detect pollution of surface waters.</p><p>Comprehensive studies of the ground-water system are needed in conjunction with hydrologic monitoring in order to fully assess the hydrologic impacts of the underground coal mining.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr81539","collaboration":"Prepared in cooperation with the Utah Department of Natural Resources and Energy, Division of Oil, Gas, and Mining","usgsCitation":"Danielson, T.W., ReMillard, M.D., and Fuller, R.H., 1981, Hydrology of the coal-resource areas in the upper drainages of Huntington and Cottonwood creeks, central Utah: U.S. Geological Survey Open-File Report 81-539, Report: vi, 85 p.; 2 Plates: 24.71 x 37.66 inches and 24.58 x 37.93 inches, https://doi.org/10.3133/ofr81539.","productDescription":"Report: vi, 85 p.; 2 Plates: 24.71 x 37.66 inches and 24.58 x 37.93 inches","costCenters":[],"links":[{"id":405144,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1981/0539/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":405143,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1981/0539/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":405142,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0539/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":143564,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0539/report-thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"central Utah","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -111.39175415039062,\n              39.13645165015621\n            ],\n            [\n              -111.13014221191406,\n              39.13645165015621\n            ],\n            [\n              -111.13014221191406,\n              39.35022841846271\n            ],\n            [\n              -111.39175415039062,\n              39.35022841846271\n            ],\n            [\n              -111.39175415039062,\n              39.13645165015621\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ce4b07f02db5fc78b","contributors":{"authors":[{"text":"Danielson, T. W.","contributorId":48590,"corporation":false,"usgs":true,"family":"Danielson","given":"T.","middleInitial":"W.","affiliations":[],"preferred":false,"id":157825,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"ReMillard, Michael D.","contributorId":95748,"corporation":false,"usgs":true,"family":"ReMillard","given":"Michael","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":157827,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, Richard H.","contributorId":66236,"corporation":false,"usgs":true,"family":"Fuller","given":"Richard","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":157826,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":61120,"text":"mf1303A - 1981 - Geologic map of the Deschutes Canyon Further Planning Area (RARE II), Jefferson and Deschutes counties, Oregon","interactions":[],"lastModifiedDate":"2012-02-10T00:10:50","indexId":"mf1303A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1303","chapter":"A","title":"Geologic map of the Deschutes Canyon Further Planning Area (RARE II), Jefferson and Deschutes counties, Oregon","language":"ENGLISH","doi":"10.3133/mf1303A","usgsCitation":"Walker, G.W., 1981, Geologic map of the Deschutes Canyon Further Planning Area (RARE II), Jefferson and Deschutes counties, Oregon: U.S. Geological Survey Miscellaneous Field Studies Map 1303, 1 map ;48 x 42 cm., https://doi.org/10.3133/mf1303A.","productDescription":"1 map ;48 x 42 cm.","costCenters":[],"links":[{"id":105729,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6930.htm","linkFileType":{"id":5,"text":"html"},"description":"6930"},{"id":187419,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.5,44.3675 ], [ -121.5,44.583333333333336 ], [ -121.25,44.583333333333336 ], [ -121.25,44.3675 ], [ -121.5,44.3675 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db6995a5","contributors":{"authors":[{"text":"Walker, G. W.","contributorId":92661,"corporation":false,"usgs":true,"family":"Walker","given":"G.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":265021,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":10402,"text":"ofr801216 - 1981 - Potential flood and debris hazards at Cottonwood Cove, Lake Mead National Recreation Area, Clark County, Nevada","interactions":[],"lastModifiedDate":"2012-02-02T00:06:32","indexId":"ofr801216","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"80-1216","title":"Potential flood and debris hazards at Cottonwood Cove, Lake Mead National Recreation Area, Clark County, Nevada","docAbstract":"At Cottonwood Cove, Nevada, most of the existing dikes at the recreation sites are effective in diverting and routing floodflows, up to and including the 100-year flood, away from people and facilities. The dikes across Ranger Residence Wash and Access Road Wash at the mouth divert floods up to the 50-year recurrence interval away from residential areas. Flow and debris damage in protected areas will be relatively minor minor for floods including the 100-year flood, whereas damage caused by sediment deposition at the mouths of the washes near Lake Mohave could be significant for floods equal to or less than the 100-year flood. The extreme flood, a flood meteorologically and hydrologically possible but so rare as to preclude a frequency estimate, could cause great damage and possible loss of life. The present dikes would be topped or breached by such flooding. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr801216","usgsCitation":"Moosburner, O., 1981, Potential flood and debris hazards at Cottonwood Cove, Lake Mead National Recreation Area, Clark County, Nevada: U.S. Geological Survey Open-File Report 80-1216, iv, 14 p. ill., maps ;28 cm., https://doi.org/10.3133/ofr801216.","productDescription":"iv, 14 p. ill., maps ;28 cm.","costCenters":[],"links":[{"id":143814,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/1216/report-thumb.jpg"},{"id":38247,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1980/1216/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":38248,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/1216/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad5e4b07f02db683878","contributors":{"authors":[{"text":"Moosburner, Otto","contributorId":41822,"corporation":false,"usgs":true,"family":"Moosburner","given":"Otto","email":"","affiliations":[],"preferred":false,"id":161327,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":61158,"text":"mf1271B - 1981 - Oil and gas resources of the Cheat Mountain Further Planning Area (RARE II), Randolph County, West Virginia","interactions":[],"lastModifiedDate":"2016-08-23T10:09:28","indexId":"mf1271B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1271","chapter":"B","title":"Oil and gas resources of the Cheat Mountain Further Planning Area (RARE II), Randolph County, West Virginia","docAbstract":"<p><span>The Wilderness Act (Public Law 88-577, September 3, 1964) and related acts require the U.S. Geological Survey and the U.S. Bureau of Mines to survey certain areas on Federal lands to determine their mineral resource potential. Results must be made available to the public and be submitted to the President and the Congress. This map presents an analysis&nbsp;of the oil and gas resources&nbsp;of the&nbsp;Cheat Mountain Further Planning Area in the Monongahela National Forest,&nbsp;Randolph County, West Virginia. The area was classified&nbsp;as a further planning area during the Second Roadless Area Review and Evaluation (RARE II) by the U.S. Forest Service, January 1979.</span></p>\n<p><span>Cheat Mountain Further Planning Area comprises about 7,720 acres in the&nbsp;Monongahela National Forest in east-central West Virginia, southeast of Elkins. The study area lies on a northeast-trending linear ridge bordered on the west by the Right Fork of Tygart River and on the east by Shavers Fork. It averages about 2 mi in length and 1</span>&frac12; mi in width. Altitudes on Cheat Mountain range from about 2,550 to 3,900 ft.&nbsp;</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf1271B","usgsCitation":"Weed, E.G., 1981, Oil and gas resources of the Cheat Mountain Further Planning Area (RARE II), Randolph County, West Virginia: U.S. Geological Survey Miscellaneous Field Studies Map 1271, 32.75 x 42.23 inches, https://doi.org/10.3133/mf1271B.","productDescription":"32.75 x 42.23 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":183377,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/mf1271B.PNG"},{"id":327558,"rank":1,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1271-B/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"West Virginia","county":"Randolph County","otherGeospatial":"Monongahela National Forest","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -80,38.25 ], [ -80,39.25 ], [ -79.25,39.25 ], [ -79.25,38.25 ], [ -80,38.25 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af4e4b07f02db691d74","contributors":{"authors":[{"text":"Weed, E. G.","contributorId":55267,"corporation":false,"usgs":true,"family":"Weed","given":"E.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":265093,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":61165,"text":"mf1319A - 1981 - Geologic map of the Box-Death Hollow Further Planning Area (RARE II), Garfield County, Utah","interactions":[],"lastModifiedDate":"2012-02-10T00:10:30","indexId":"mf1319A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1319","chapter":"A","title":"Geologic map of the Box-Death Hollow Further Planning Area (RARE II), Garfield County, Utah","language":"ENGLISH","doi":"10.3133/mf1319A","usgsCitation":"Weir, G.W., and Beard, L.S., 1981, Geologic map of the Box-Death Hollow Further Planning Area (RARE II), Garfield County, Utah: U.S. Geological Survey Miscellaneous Field Studies Map 1319, 1 map ;39 x 69 cm. on sheet 85 x 76 cm., https://doi.org/10.3133/mf1319A.","productDescription":"1 map ;39 x 69 cm. on sheet 85 x 76 cm.","costCenters":[],"links":[{"id":105743,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6951.htm","linkFileType":{"id":5,"text":"html"},"description":"6951"},{"id":183474,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.75,37.833333333333336 ], [ -111.75,38 ], [ -111.36749999999999,38 ], [ -111.36749999999999,37.833333333333336 ], [ -111.75,37.833333333333336 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b0be4b07f02db69d996","contributors":{"authors":[{"text":"Weir, G. W.","contributorId":107290,"corporation":false,"usgs":true,"family":"Weir","given":"G.","middleInitial":"W.","affiliations":[],"preferred":false,"id":265109,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Beard, L. S.","contributorId":29410,"corporation":false,"usgs":true,"family":"Beard","given":"L.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":265108,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":7049,"text":"ofr81670 - 1981 - Chemical analyses of samples of rock, minus-0.25-mm stream sediment, and nonmagnetic heavy-mineral concentrate, Mokelumne Wilderness and adjacent RARE II further planning areas, California","interactions":[],"lastModifiedDate":"2021-11-22T20:37:55.996531","indexId":"ofr81670","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","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":"81-670","title":"Chemical analyses of samples of rock, minus-0.25-mm stream sediment, and nonmagnetic heavy-mineral concentrate, Mokelumne Wilderness and adjacent RARE II further planning areas, California","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr81670","usgsCitation":"Chaffee, M.A., McKee, E., Hill, R.H., Speckman, W.S., and Sutley, S.J., 1981, Chemical analyses of samples of rock, minus-0.25-mm stream sediment, and nonmagnetic heavy-mineral concentrate, Mokelumne Wilderness and adjacent RARE II further planning areas, California: U.S. Geological Survey Open-File Report 81-670, Report; 36 p.; 1 Plate: 29.88 × 31.94 inches, https://doi.org/10.3133/ofr81670.","productDescription":"Report; 36 p.; 1 Plate: 29.88 × 31.94 inches","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":140563,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0670/report-thumb.jpg"},{"id":34344,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1981/0670/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34345,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0670/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":392007,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_75520.htm"}],"country":"United States","state":"California","otherGeospatial":"Mokelumne Wilderness and adjacent RARE II further planning areas","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.2,\n              38.4833\n            ],\n            [\n              -119.95,\n              38.4833\n            ],\n            [\n              -119.95,\n              38.7667\n            ],\n            [\n              -120.2,\n              38.7667\n            ],\n            [\n              -120.2,\n              38.4833\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e2e4b07f02db5e4a79","contributors":{"authors":[{"text":"Chaffee, Maurice A. mchaffee@usgs.gov","contributorId":4047,"corporation":false,"usgs":true,"family":"Chaffee","given":"Maurice","email":"mchaffee@usgs.gov","middleInitial":"A.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":154077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McKee, E.H.","contributorId":20736,"corporation":false,"usgs":true,"family":"McKee","given":"E.H.","email":"","affiliations":[],"preferred":false,"id":154078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hill, R. H.","contributorId":57059,"corporation":false,"usgs":true,"family":"Hill","given":"R.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":154079,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Speckman, W. S.","contributorId":105296,"corporation":false,"usgs":true,"family":"Speckman","given":"W.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":154081,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sutley, S. J.","contributorId":91484,"corporation":false,"usgs":true,"family":"Sutley","given":"S.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":154080,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":61500,"text":"mf1214B - 1981 - Mineral resource potential of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning (RARE II) Areas, Modoc, Shasta, and Siskiyou Counties, California","interactions":[],"lastModifiedDate":"2018-12-06T15:26:34","indexId":"mf1214B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1214","chapter":"B","title":"Mineral resource potential of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning (RARE II) Areas, Modoc, Shasta, and Siskiyou Counties, California","docAbstract":"<p>In accordance with the provisions of the Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976), the Geological Survey and the Bureau of Mines have conducted mineral surveys on certain areas, which formally had been identified as \"natural\" and \"primitive\" areas prior to November 1, 1975.</p><p>The Wilderness Act (Public Law 88-577, September 3, 1964) and related Acts, r equire the Geological Survey and the Bureau of Mines to survey certain areas on Federal lands to determine their mineral resource potential. Results must be made available to the public and be submitted to the Administration and the Congress. These maps and reports present the results of a geological and mineral survey of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning (RARE II) areas.</p><p>The study areas have no potential for metallic commodities as determined from spectrographic analyses of rocks (Peterson, 1980). Several localities within the study areas, however, contain stone that can be used for decorative purposes in building construction . The study areas may also have geothermal potential, but at this time quantitative data are unavailable.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf1214B","usgsCitation":"Peterson, J.A., Martin, L., Esparza, L.E., and Cwick, G.J., 1981, Mineral resource potential of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning (RARE II) Areas, Modoc, Shasta, and Siskiyou Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map 1214, 24.73 x 28.50 inches, https://doi.org/10.3133/mf1214B.","productDescription":"24.73 x 28.50 inches","costCenters":[],"links":[{"id":180222,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/1214-B/report-thumb.jpg"},{"id":360000,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/1214-B/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"62500","country":"United States","state":"California","county":"Modoc County, Shasta County, Siskiyou County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.5,41.083333333333336 ], [ -121.5,41.25 ], [ -121.33333333333333,41.25 ], [ -121.33333333333333,41.083333333333336 ], [ -121.5,41.083333333333336 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db6275ae","contributors":{"authors":[{"text":"Peterson, Jocelyn A.","contributorId":13954,"corporation":false,"usgs":true,"family":"Peterson","given":"Jocelyn","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":265826,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, L.M.","contributorId":19224,"corporation":false,"usgs":true,"family":"Martin","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":265824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Esparza, L. E.","contributorId":72848,"corporation":false,"usgs":true,"family":"Esparza","given":"L.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":265825,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cwick, Gary J.","contributorId":86022,"corporation":false,"usgs":true,"family":"Cwick","given":"Gary","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":265827,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":27162,"text":"wri8131 - 1981 - Chemical, physical, and radiological quality of selected public water supplies in Florida, February-April 1980","interactions":[],"lastModifiedDate":"2019-11-07T11:22:18","indexId":"wri8131","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"81-31","title":"Chemical, physical, and radiological quality of selected public water supplies in Florida, February-April 1980","docAbstract":"Virtually all treated public water supplies in Florida meet the National Interim Primary and Secondary Drinking Water Regulations. These findings are based on a water-quality reconnaissance of 126 raw and treated public water supplies throughout the State during the period February through April 1980. Primary drinking water regulations maximum contaminant levels were rarely exceeded, although mercury (1 site), fluoride (2 sites), and radionuclides (3 sites) in water supplies were above established maximum contaminant levels. Dissolved solids, chloride, copper, manganese, iron, color, sulfate, and pH, were occasionally slightly in excess of the recommended maximum contaminant levels of the secondary drinking water regulation. The secondary regulations, however, pertain mainly to the esthetic quality of drinking water and not directly to public health aspects. (USGS)","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri8131","usgsCitation":"Franks, B.J., and Irwin, G.A., 1981, Chemical, physical, and radiological quality of selected public water supplies in Florida, February-April 1980: U.S. Geological Survey Water-Resources Investigations Report 81-31, iii, 59 p. , https://doi.org/10.3133/wri8131.","productDescription":"iii, 59 p. ","costCenters":[],"links":[{"id":369035,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1981/0031/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":158009,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1981/0031/report-thumb.jpg"}],"country":"United States","state":"Florida","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -87.62695312499999,\n              24.467150664739002\n            ],\n            [\n              -79.91455078125,\n              24.467150664739002\n            ],\n            [\n              -79.91455078125,\n              31.034108344903512\n            ],\n            [\n              -87.62695312499999,\n              31.034108344903512\n            ],\n            [\n              -87.62695312499999,\n              24.467150664739002\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67b7e4","contributors":{"authors":[{"text":"Franks, Bernard J.","contributorId":106088,"corporation":false,"usgs":true,"family":"Franks","given":"Bernard","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":197668,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Irwin, G. A.","contributorId":35733,"corporation":false,"usgs":true,"family":"Irwin","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":197667,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":59769,"text":"mf1244A - 1981 - Geologic map of the Mount Moriah Further Planning (RARE II) Area, eastern Nevada","interactions":[],"lastModifiedDate":"2012-02-10T00:10:24","indexId":"mf1244A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1244","chapter":"A","title":"Geologic map of the Mount Moriah Further Planning (RARE II) Area, eastern Nevada","language":"ENGLISH","doi":"10.3133/mf1244A","usgsCitation":"Hose, R.K., 1981, Geologic map of the Mount Moriah Further Planning (RARE II) Area, eastern Nevada: U.S. Geological Survey Miscellaneous Field Studies Map 1244, 1 map ;42 x 38 cm. on sheet 67 x 85 cm., https://doi.org/10.3133/mf1244A.","productDescription":"1 map ;42 x 38 cm. on sheet 67 x 85 cm.","costCenters":[],"links":[{"id":105598,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6694.htm","linkFileType":{"id":5,"text":"html"},"description":"6694"},{"id":183722,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.25,39 ], [ -114.25,39.5 ], [ -114,39.5 ], [ -114,39 ], [ -114.25,39 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db6965fc","contributors":{"authors":[{"text":"Hose, R. K.","contributorId":63388,"corporation":false,"usgs":true,"family":"Hose","given":"R.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":262549,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
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