The U. S. Geological Survey, at the request of the Director of Naval Petroleum Reserves, undertook a geologic investigation of San Nicolas Island, Ventura County California, in the spring of 1955. This preliminary report summarizes present knowledge concerning the general stratigraphy and structure of the island. Additional surface and underwater geologic studies are needed to further differentiate lithologic units within the complexly faulted Eocene sequence and to obtain additional data concerning the northwestward extension of the general anticlinal structure of the island.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr56126","collaboration":"Prepared in cooperation with the Office of Naval Petroleum Reserves, Department of the Navy","usgsCitation":"Vedder, J.G., Schoelhamer, J., and Israelsky, M., 1956, Preliminary report on the geology of San Nicolas Island, California: U.S. Geological Survey Open-File Report 56-126, 15 p., https://doi.org/10.3133/ofr56126.","productDescription":"15 p.","costCenters":[],"links":[{"id":431279,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0126/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":147823,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0126/report-thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Nicolas Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -119.58573792836644,\n 33.30759417992911\n ],\n [\n -119.58573792836644,\n 33.20165400149669\n ],\n [\n -119.42994005214368,\n 33.20165400149669\n ],\n [\n -119.42994005214368,\n 33.30759417992911\n ],\n [\n -119.58573792836644,\n 33.30759417992911\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aafe4b07f02db66c930","contributors":{"authors":[{"text":"Vedder, J. G.","contributorId":97873,"corporation":false,"usgs":true,"family":"Vedder","given":"J.","middleInitial":"G.","affiliations":[],"preferred":false,"id":172745,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoelhamer, J.E.","contributorId":32932,"corporation":false,"usgs":true,"family":"Schoelhamer","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":172744,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Israelsky, M.C.","contributorId":21623,"corporation":false,"usgs":true,"family":"Israelsky","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":906675,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":15433,"text":"ofr5694 - 1956 - Uranium-bearing coal in the central part of the Great Divide Basin, Sweetwater County, Wyoming","interactions":[{"subject":{"id":15433,"text":"ofr5694 - 1956 - Uranium-bearing coal in the central part of the Great Divide Basin, Sweetwater County, Wyoming","indexId":"ofr5694","publicationYear":"1956","noYear":false,"title":"Uranium-bearing coal in the central part of the Great Divide Basin, Sweetwater County, Wyoming"},"predicate":"SUPERSEDED_BY","object":{"id":35529,"text":"b1099A - 1961 - Uranium-bearing coal in the central part of the Great Divide Basin","indexId":"b1099A","publicationYear":"1961","noYear":false,"chapter":"A","title":"Uranium-bearing coal in the central part of the Great Divide Basin"},"id":1}],"supersededBy":{"id":35529,"text":"b1099A - 1961 - Uranium-bearing coal in the central part of the Great Divide Basin","indexId":"b1099A","publicationYear":"1961","noYear":false,"title":"Uranium-bearing coal in the central part of the Great Divide Basin"},"lastModifiedDate":"2012-02-02T00:07:08","indexId":"ofr5694","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-94","title":"Uranium-bearing coal in the central part of the Great Divide Basin, Sweetwater County, Wyoming","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr5694","usgsCitation":"Pipiringos, G., 1956, Uranium-bearing coal in the central part of the Great Divide Basin, Sweetwater County, Wyoming: U.S. Geological Survey Open-File Report 56-94, 138 p. ill., maps ;29 cm., https://doi.org/10.3133/ofr5694.","productDescription":"138 p. ill., maps ;29 cm.","costCenters":[],"links":[{"id":148419,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db6053ad","contributors":{"authors":[{"text":"Pipiringos, G. N.","contributorId":11210,"corporation":false,"usgs":true,"family":"Pipiringos","given":"G. N.","affiliations":[],"preferred":false,"id":171132,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":14304,"text":"ofr5659 - 1956 - Johnny Gulch talc deposit, Madison County, Montana","interactions":[],"lastModifiedDate":"2012-02-02T00:06:59","indexId":"ofr5659","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-59","title":"Johnny Gulch talc deposit, Madison County, Montana","language":"ENGLISH","publisher":"s.n.,","doi":"10.3133/ofr5659","usgsCitation":"James, H.L., 1956, Johnny Gulch talc deposit, Madison County, Montana: U.S. Geological Survey Open-File Report 56-59, 8 p. ill., 3 maps (1 folded) ;27 cm., https://doi.org/10.3133/ofr5659.","productDescription":"8 p. ill., 3 maps (1 folded) ;27 cm.","costCenters":[],"links":[{"id":147905,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0059/report-thumb.jpg"},{"id":42971,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0059/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42972,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0059/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9fe4b07f02db661756","contributors":{"authors":[{"text":"James, Harold Lloyd","contributorId":64631,"corporation":false,"usgs":true,"family":"James","given":"Harold","email":"","middleInitial":"Lloyd","affiliations":[],"preferred":false,"id":169233,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":46329,"text":"ofr5619 - 1956 - Map of Redlands-Beaumont area, California, showing well locations and water-level contours for March 1955","interactions":[],"lastModifiedDate":"2012-02-02T00:10:45","indexId":"ofr5619","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-19","title":"Map of Redlands-Beaumont area, California, showing well locations and water-level contours for March 1955","language":"ENGLISH","doi":"10.3133/ofr5619","usgsCitation":"Burnham, W.L., and Dutcher, L., 1956, Map of Redlands-Beaumont area, California, showing well locations and water-level contours for March 1955: U.S. Geological Survey Open-File Report 56-19, 1 map., https://doi.org/10.3133/ofr5619.","productDescription":"1 map.","costCenters":[],"links":[{"id":171274,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a91e4b07f02db656add","contributors":{"authors":[{"text":"Burnham, Willis L.","contributorId":31762,"corporation":false,"usgs":true,"family":"Burnham","given":"Willis","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":233104,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dutcher, L.C.","contributorId":42191,"corporation":false,"usgs":true,"family":"Dutcher","given":"L.C.","email":"","affiliations":[],"preferred":false,"id":233105,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15449,"text":"ofr5695 - 1956 - Geologic investigations of proposed Sheep Creek, Carlson Creek, and Turner Lake power sites, Alaska","interactions":[{"subject":{"id":15449,"text":"ofr5695 - 1956 - Geologic investigations of proposed Sheep Creek, Carlson Creek, and Turner Lake power sites, Alaska","indexId":"ofr5695","publicationYear":"1956","noYear":false,"title":"Geologic investigations of proposed Sheep Creek, Carlson Creek, and Turner Lake power sites, Alaska"},"predicate":"SUPERSEDED_BY","object":{"id":35492,"text":"b1031F - 1962 - Geologic investigations of proposed powersites at Sheep Creek, Carlson Creek, and Turner Lake, Alaska","indexId":"b1031F","publicationYear":"1962","noYear":false,"chapter":"F","title":"Geologic investigations of proposed powersites at Sheep Creek, Carlson Creek, and Turner Lake, Alaska"},"id":1}],"supersededBy":{"id":35492,"text":"b1031F - 1962 - Geologic investigations of proposed powersites at Sheep Creek, Carlson Creek, and Turner Lake, Alaska","indexId":"b1031F","publicationYear":"1962","noYear":false,"title":"Geologic investigations of proposed powersites at Sheep Creek, Carlson Creek, and Turner Lake, Alaska"},"lastModifiedDate":"2024-01-31T20:49:19.712777","indexId":"ofr5695","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-95","title":"Geologic investigations of proposed Sheep Creek, Carlson Creek, and Turner Lake power sites, Alaska","docAbstract":"Geologic conditions at Sheep Creek, Carlson Creek, and Turner Lake are discussed in relation to possible plans for hydroeletric power development. The proposed sites are on the rugged mainland of Southeastern Alaska along Gastineau Channel and Taku Inlet near Juneau. Bedrock in the area consists of a coastal strip of northwestward-trending foliated metamorphic rocks with steep northeasterly dips. This belt of rocks is adjacent to the Coast Range batholith on the northeast, with a 2 to 3 mile wide zone of injection gneiss between the main batholith and the metamorphic rocks. Unconsolidated glacial and post-glacial deposits of Quaternary age mantle the bedrock over large parts of the area. The valleys of Sheep and Carlson Creeks have been modified by glaciers of Pleistocene age and Turner Lake occupies a rock basin formed by glacial scour.
There is an excellent site in greenstone bedrock at Sheep Creek for either a concrete or a rock fill dam. A conduit from the dam to a powerhouse along Gastineau Channel would be on bedrock for most of the distance. Slate bedrock suitable for a powerhouse site is exposed near the mouth of Sheep Creek. To the northwest along Gastineau Channel, bedrock is concealed by a mantle of glacial deposits of unknown thickness. The reservoir is in essentially impermeable bedrock; however, a main haulage adit of the Alaska-Juneau gold mine would probably have to be sealed off to prevent flooding of the mine workings or possible loss of water from the reservoir.
The dam, diversion tunnel, and powerhouse at Carlson Creek are all in bedrock consisting of fresh injection gneiss. This rock is well suited as the foundation of a concrete or rock fill dam, but foundation treatment would be required to seal off closely spaced open joints trending perpendicular to the proposed dam axis. The diversion tunnel would stand unsupported except possibly where it would intersect two zones of closely spaced joints. The reservoir would be in essentially impermeable bedrock.
Both the main dam and auxiliary structure at Turner Lake would be on an excellent foundation of granitic rock (granodiorite). Loose landslide debris would have to be removed at the dam site to expose fresh, sound bedrock. There is a powerhouse site in bedrock along Turner Creek at a stream elevation of 16 feet. Foundation conditions for a powerhouse at tidewater, near the mouth of Turner Creek were not studied. The conduit would be on sound granitic rock throughout its length, and the reservoir is entirely in relatively tight granitic bedrock.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr5695","usgsCitation":"Plafker, G., 1956, Geologic investigations of proposed Sheep Creek, Carlson Creek, and Turner Lake power sites, Alaska: U.S. Geological Survey Open-File Report 56-95, Report: 37 p.; 3 Plates: 21.80 x 26.79 inches or smaller, https://doi.org/10.3133/ofr5695.","productDescription":"Report: 37 p.; 3 Plates: 21.80 x 26.79 inches or smaller","costCenters":[],"links":[{"id":148778,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0095/report-thumb.jpg"},{"id":425179,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0095/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":425178,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0095/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":425177,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0095/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":425176,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0095/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"Carlson Creek, Sheep Creek, Turner Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -134.55931309956082,\n 58.53883347149653\n ],\n [\n -134.55931309956082,\n 58.1955967884052\n ],\n [\n -133.88300839367312,\n 58.1955967884052\n ],\n [\n -133.88300839367312,\n 58.53883347149653\n ],\n [\n -134.55931309956082,\n 58.53883347149653\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a5008","contributors":{"authors":[{"text":"Plafker, George","contributorId":3920,"corporation":false,"usgs":false,"family":"Plafker","given":"George","email":"","affiliations":[],"preferred":false,"id":171151,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":16190,"text":"ofr56113 - 1956 - A magnetic survey of the southern part of Georgia","interactions":[],"lastModifiedDate":"2012-02-02T00:07:09","indexId":"ofr56113","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-113","title":"A magnetic survey of the southern part of Georgia","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr56113","usgsCitation":"Swartz, J.H., MacCarthy, G., and Shuler, R., 1956, A magnetic survey of the southern part of Georgia: U.S. Geological Survey Open-File Report 56-113, 123 p. :maps ;30 cm., https://doi.org/10.3133/ofr56113.","productDescription":"123 p. :maps ;30 cm.","costCenters":[],"links":[{"id":148589,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0113/report-thumb.jpg"},{"id":45124,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0113/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":45125,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0113/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":45126,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0113/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":45127,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0113/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":45128,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0113/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6ae1e2","contributors":{"authors":[{"text":"Swartz, Joel Howard","contributorId":65481,"corporation":false,"usgs":true,"family":"Swartz","given":"Joel","email":"","middleInitial":"Howard","affiliations":[],"preferred":false,"id":172393,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"MacCarthy, G.R.","contributorId":23153,"corporation":false,"usgs":true,"family":"MacCarthy","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":172392,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shuler, R.M.","contributorId":104910,"corporation":false,"usgs":true,"family":"Shuler","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":172394,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":16084,"text":"ofr56110 - 1956 - Annotated list of plants of Arctic Slope of Alaska","interactions":[{"subject":{"id":16084,"text":"ofr56110 - 1956 - Annotated list of plants of Arctic Slope of Alaska","indexId":"ofr56110","publicationYear":"1956","noYear":false,"title":"Annotated list of plants of Arctic Slope of Alaska"},"predicate":"SUPERSEDED_BY","object":{"id":39094,"text":"pp302B - 1959 - Vegetation of the Arctic Slope of Alaska","indexId":"pp302B","publicationYear":"1959","noYear":false,"chapter":"B","title":"Vegetation of the Arctic Slope of Alaska"},"id":1}],"supersededBy":{"id":39094,"text":"pp302B - 1959 - Vegetation of the Arctic Slope of Alaska","indexId":"pp302B","publicationYear":"1959","noYear":false,"title":"Vegetation of the Arctic Slope of Alaska"},"lastModifiedDate":"2024-01-26T21:30:31.719722","indexId":"ofr56110","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-110","title":"Annotated list of plants of Arctic Slope of Alaska","docAbstract":"The accompanying 5-page list of 439 higher plants was compiled as part of a manuscript to be included in a series of professional papers on Naval Petroleum Reserve No. 4 and adjoining areas.
This check list describing the distribution, abundance, flowering period, plant growth on various rook types, and other habitat relationships, is based primarily on extensive collections of arctic plants by the author and other members of the Survey.
In 1948 and 1949 the Arctic Institute of North America sponsored these studies, which were done primarily out of Survey field camps. Analysis of these collections which are probably the most extensive and complete of any from northern Alaska, was done at the University of Minnesota.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr56110","usgsCitation":"Spetzman, L.A., 1956, Annotated list of plants of Arctic Slope of Alaska: U.S. Geological Survey Open-File Report 56-110, 6 p., https://doi.org/10.3133/ofr56110.","productDescription":"6 p.","costCenters":[],"links":[{"id":425062,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0110/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":150335,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0110/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Arctic Slope","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -173.97106311876843,\n 70.94366795399895\n ],\n [\n -173.97106311876843,\n 67.6762275998912\n ],\n [\n -141.49294585565158,\n 67.6762275998912\n ],\n [\n -141.49294585565158,\n 70.94366795399895\n ],\n [\n -173.97106311876843,\n 70.94366795399895\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67bd24","contributors":{"authors":[{"text":"Spetzman, Lloyd Anthony","contributorId":83141,"corporation":false,"usgs":true,"family":"Spetzman","given":"Lloyd","email":"","middleInitial":"Anthony","affiliations":[],"preferred":false,"id":172209,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":15056,"text":"ofr5682 - 1956 - Zinc and copper mineralization of the Vazante area, Minas Gerais, Brazil","interactions":[],"lastModifiedDate":"2012-02-02T00:07:03","indexId":"ofr5682","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-82","title":"Zinc and copper mineralization of the Vazante area, Minas Gerais, Brazil","docAbstract":"A large body of zinc and copper mineralization is exposed in a line of low hills about 5 kilometers east of the small village of Vazante in the northwestern part of the state of Minas Gerais, Brazil. The Vazante area can be reached by roads leading north from the State of Sao Paulo, via Araxa; west from Balo Horizonte, Minas Gerais; and south from Paracatu, Minas Gerais.\r\n\r\nThe deposit is in branching, sub-parallel fault breccia zones. Calamine (H2Zn2SiO5), and willomite (ZnSiO4), along with small quantities of smithsonite (ZnCO3), form the matrix of the fault breccia. The zinc mineralization is cut by narrow veins of chalcocite in platy crystal aggregate thought to be pseudomorphous after covellite. The chalcocite veins contain small quantities of sphalterite, galena, covellite and calamine.\r\n\r\nFaults that contain breccia zones displace shale and dolomite. The sedimentary rocks are thought to be Silurian in age. The fault breccia zones have a regional trend of N 40 degrees E and crop out over a strike length of more than four kilometers. The mineralization of the fault zones was observed to continue to the north for an additional four kilometers. The mineralized fault breccia zones range from a few meters to 60 meters in width. A large ore body is indicated that from available samples may average 35 percent zinc.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr5682","usgsCitation":"Moore, S.L., 1956, Zinc and copper mineralization of the Vazante area, Minas Gerais, Brazil: U.S. Geological Survey Open-File Report 56-82, 23 p. :maps (some folded) ;27 cm., https://doi.org/10.3133/ofr5682.","productDescription":"23 p. :maps (some folded) ;27 cm.","costCenters":[],"links":[{"id":147753,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1956/0082/report-thumb.jpg"},{"id":43971,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0082/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":43972,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0082/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":43973,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0082/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":43974,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1956/0082/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":43975,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1956/0082/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4794e4b07f02db48d06c","contributors":{"authors":[{"text":"Moore, Samuel L.","contributorId":88727,"corporation":false,"usgs":true,"family":"Moore","given":"Samuel","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":170496,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":42794,"text":"ofr5652 - 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1956 - Low-flow investigation of the Pedernales River, Texas","interactions":[],"lastModifiedDate":"2012-02-02T00:08:13","indexId":"ofr5656","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-56","title":"Low-flow investigation of the Pedernales River, Texas","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr5656","issn":"0094-9140","usgsCitation":"Holland, P.H., and Lee, F.C., 1956, Low-flow investigation of the Pedernales River, Texas: U.S. Geological Survey Open-File Report 56-56, 20 p. ill., col. map ;27 cm., https://doi.org/10.3133/ofr5656.","productDescription":"20 p. ill., col. map ;27 cm.","costCenters":[],"links":[{"id":157098,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db648792","contributors":{"authors":[{"text":"Holland, Pat H.","contributorId":64690,"corporation":false,"usgs":true,"family":"Holland","given":"Pat","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":189995,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, Frank C.","contributorId":70017,"corporation":false,"usgs":true,"family":"Lee","given":"Frank","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":189996,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":51812,"text":"ofr5525 - 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1956 - Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska","interactions":[{"subject":{"id":12691,"text":"ofr568 - 1956 - Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska","indexId":"ofr568","publicationYear":"1956","noYear":false,"title":"Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska"},"predicate":"SUPERSEDED_BY","object":{"id":64784,"text":"i249 - 1957 - Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska","indexId":"i249","publicationYear":"1957","noYear":false,"title":"Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska"},"id":1}],"supersededBy":{"id":64784,"text":"i249 - 1957 - Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska","indexId":"i249","publicationYear":"1957","noYear":false,"title":"Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska"},"lastModifiedDate":"2012-02-02T00:06:38","indexId":"ofr568","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-8","title":"Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr568","usgsCitation":"Bickel, R.S., and Patton, W.W., 1956, Preliminary geologic map of the Nulato and Kateel Rivers area, Alaska: U.S. Geological Survey Open-File Report 56-8, 2 maps ;190 x 109 and 63 x 114 cm., https://doi.org/10.3133/ofr568.","productDescription":"2 maps ;190 x 109 and 63 x 114 cm.","costCenters":[],"links":[{"id":144684,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac7e4b07f02db67af23","contributors":{"authors":[{"text":"Bickel, Robert Samuel","contributorId":93059,"corporation":false,"usgs":true,"family":"Bickel","given":"Robert","email":"","middleInitial":"Samuel","affiliations":[],"preferred":false,"id":166551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Patton, William Wallace Jr.","contributorId":72346,"corporation":false,"usgs":true,"family":"Patton","given":"William","suffix":"Jr.","email":"","middleInitial":"Wallace","affiliations":[],"preferred":false,"id":166550,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":12610,"text":"ofr565 - 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1956 - Memoranda reports on the geologic spot examinations of mines and prospects in Iran, February 1954, through June, 1955","interactions":[],"lastModifiedDate":"2017-09-19T11:08:05","indexId":"ofr5647","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1956","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":"56-47","title":"Memoranda reports on the geologic spot examinations of mines and prospects in Iran, February 1954, through June, 1955","docAbstract":"A series of twenty-nine geological spot examinations of mines and prospects in Iran were carried out by Dr. Russell Gibson, Geologist, U.S. Geological Survey between February 1954 and June 1955. These studies were under the joint auspices of the U.S. Operation Mission of the International Cooperation Administration and the Iranian Ministry of National Economy. Dr. Gibson acted as Advisor in economic geology to both the Mission and the Government of Iran during this period. All mine or prospect visits including those two properties owned by private operators were made at the request of the agencies of the Government of Iran.
No abstract available.
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