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","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69223","usgsCitation":"Richter, D.H., and Matson, N.A., 1969, Geochemical data from the Nabesna A-3 quadrangle, Alaska: U.S. Geological Survey Open-File Report 69-223, Report: 6 p.; 1 Plate: 18.24 × 24.94 inches, https://doi.org/10.3133/ofr69223.","productDescription":"Report: 6 p.; 1 Plate: 18.24 × 24.94 inches","costCenters":[],"links":[{"id":44611,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0223/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44612,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0223/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":146902,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0223/report-thumb.jpg"},{"id":106438,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8396.htm","linkFileType":{"id":5,"text":"html"},"description":"8396"}],"country":"United States","state":"Alaska","otherGeospatial":"Nabesna A-3 quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -142.5,\n 62\n ],\n [\n -142,\n 62\n ],\n [\n -142,\n 62.250\n ],\n [\n -142.5,\n 62.250\n ],\n [\n -142.5,\n 62\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6ae3ac","contributors":{"authors":[{"text":"Richter, Donald H.","contributorId":61021,"corporation":false,"usgs":true,"family":"Richter","given":"Donald","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":171488,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Matson, Neal A. Jr.","contributorId":18779,"corporation":false,"usgs":true,"family":"Matson","given":"Neal","suffix":"Jr.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":171487,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15484,"text":"ofr69211 - 1969 - Interpretation of the aeromagnetic pattern of the San Juan primitive area, Colorado","interactions":[],"lastModifiedDate":"2025-07-28T18:32:09.284449","indexId":"ofr69211","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-211","title":"Interpretation of the aeromagnetic pattern of the San Juan primitive area, Colorado","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69211","usgsCitation":"Popenoe, P., and Steven, T.A., 1969, Interpretation of the aeromagnetic pattern of the San Juan primitive area, Colorado: U.S. Geological Survey Open-File Report 69-211, Report: 7 p.; 1 Plate: 45.12 x 28.36 inches, https://doi.org/10.3133/ofr69211.","productDescription":"Report: 7 p.; 1 Plate: 45.12 x 28.36 inches","costCenters":[],"links":[{"id":147858,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0211/report-thumb.jpg"},{"id":44455,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0211/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44456,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0211/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":493037,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8392.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Colorado","otherGeospatial":"San Juan primitive area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -108,\n 37.8\n ],\n [\n -108,\n 37.25\n ],\n [\n -106.465,\n 37.25\n ],\n [\n -106.465,\n 37.8\n ],\n [\n -108,\n 37.8\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dae4b07f02db5e0276","contributors":{"authors":[{"text":"Popenoe, Peter","contributorId":62206,"corporation":false,"usgs":true,"family":"Popenoe","given":"Peter","email":"","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":171200,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Steven, Thomas August","contributorId":73174,"corporation":false,"usgs":true,"family":"Steven","given":"Thomas","email":"","middleInitial":"August","affiliations":[],"preferred":false,"id":171201,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15118,"text":"ofr69179 - 1969 - Preliminary geologic map of the Hommel quadrangle of the Moon","interactions":[{"subject":{"id":15118,"text":"ofr69179 - 1969 - Preliminary geologic map of the Hommel quadrangle of the Moon","indexId":"ofr69179","publicationYear":"1969","noYear":false,"title":"Preliminary geologic map of the Hommel quadrangle of the Moon"},"predicate":"SUPERSEDED_BY","object":{"id":66645,"text":"i702 - 1972 - Geologic map of the Hommel quadrangle of the Moon","indexId":"i702","publicationYear":"1972","noYear":false,"title":"Geologic map of the Hommel quadrangle of the Moon"},"id":1}],"supersededBy":{"id":66645,"text":"i702 - 1972 - Geologic map of the Hommel quadrangle of the Moon","indexId":"i702","publicationYear":"1972","noYear":false,"title":"Geologic map of the Hommel quadrangle of the Moon"},"lastModifiedDate":"2012-02-02T00:07:03","indexId":"ofr69179","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-179","title":"Preliminary geologic map of the Hommel quadrangle of the Moon","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr69179","usgsCitation":"Mutch, T.A., and Saunders, R.S., 1969, Preliminary geologic map of the Hommel quadrangle of the Moon: U.S. Geological Survey Open-File Report 69-179, 5 p. ill., folded map ;27 cm., https://doi.org/10.3133/ofr69179.","productDescription":"5 p. ill., folded map ;27 cm.","costCenters":[],"links":[{"id":147786,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db629df9","contributors":{"authors":[{"text":"Mutch, Thomas A.","contributorId":59461,"corporation":false,"usgs":true,"family":"Mutch","given":"Thomas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":170605,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saunders, Ronald Stephen","contributorId":69165,"corporation":false,"usgs":true,"family":"Saunders","given":"Ronald","email":"","middleInitial":"Stephen","affiliations":[],"preferred":false,"id":170606,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":14831,"text":"ofr69164 - 1969 - Metallic mineral resources map of the Nabesna quadrangle, Alaska","interactions":[{"subject":{"id":14831,"text":"ofr69164 - 1969 - Metallic mineral resources map of the Nabesna quadrangle, Alaska","indexId":"ofr69164","publicationYear":"1969","noYear":false,"title":"Metallic mineral resources map of the Nabesna quadrangle, Alaska"},"predicate":"SUPERSEDED_BY","object":{"id":60699,"text":"mf422 - 1972 - Metallic mineral resources map of the Nabesna Quadrangle, Alaska","indexId":"mf422","publicationYear":"1972","noYear":false,"title":"Metallic mineral resources map of the Nabesna Quadrangle, Alaska"},"id":1}],"supersededBy":{"id":60699,"text":"mf422 - 1972 - Metallic mineral resources map of the Nabesna Quadrangle, Alaska","indexId":"mf422","publicationYear":"1972","noYear":false,"title":"Metallic mineral resources map of the Nabesna Quadrangle, Alaska"},"lastModifiedDate":"2012-02-02T00:07:04","indexId":"ofr69164","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-164","title":"Metallic mineral resources map of the Nabesna quadrangle, Alaska","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69164","usgsCitation":"Matson, N.A., 1969, Metallic mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Open-File Report 69-164, 6 p.:maps ;27 cm., https://doi.org/10.3133/ofr69164.","productDescription":"6 p.:maps ;27 cm.","costCenters":[],"links":[{"id":108209,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_12277.htm","linkFileType":{"id":5,"text":"html"},"description":"12277"},{"id":148916,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db627a4c","contributors":{"authors":[{"text":"Matson, Neal A. Jr.,(compiler)","contributorId":79117,"corporation":false,"usgs":true,"family":"Matson","given":"Neal","suffix":"Jr.,(compiler)","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":170087,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":13490,"text":"ofr6988 - 1969 - Maps showing locations of holes drilled in 1953 and 1954 by U.S. Geological Survey, Beaver Mesa area, Mesa County, Colorado, Grand County, Utah","interactions":[],"lastModifiedDate":"2012-02-02T00:06:37","indexId":"ofr6988","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-88","title":"Maps showing locations of holes drilled in 1953 and 1954 by U.S. Geological Survey, Beaver Mesa area, Mesa County, Colorado, Grand County, Utah","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr6988","usgsCitation":"Eicher, L.J., and Myers, A., 1969, Maps showing locations of holes drilled in 1953 and 1954 by U.S. Geological Survey, Beaver Mesa area, Mesa County, Colorado, Grand County, Utah: U.S. Geological Survey Open-File Report 69-88, 5 p. :maps ;27 cm., https://doi.org/10.3133/ofr6988.","productDescription":"5 p. :maps ;27 cm.","costCenters":[],"links":[{"id":144728,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0088/report-thumb.jpg"},{"id":41965,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0088/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41966,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0088/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41967,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0088/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db605beb","contributors":{"authors":[{"text":"Eicher, Lee J.","contributorId":65470,"corporation":false,"usgs":true,"family":"Eicher","given":"Lee","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":167883,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Myers, A.R.","contributorId":11230,"corporation":false,"usgs":true,"family":"Myers","given":"A.R.","email":"","affiliations":[],"preferred":false,"id":167882,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":13274,"text":"ofr6969 - 1969 - Geophysical exploration in the Wadi Qatan area, Saudi Arabia","interactions":[],"lastModifiedDate":"2012-02-02T00:06:54","indexId":"ofr6969","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-69","title":"Geophysical exploration in the Wadi Qatan area, Saudi Arabia","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr6969","usgsCitation":"Davis, W.E., Akhrass, M.N., and Gazzaz, H., 1969, Geophysical exploration in the Wadi Qatan area, Saudi Arabia: U.S. Geological Survey Open-File Report 69-69, 9 p. ill., maps ;27 cm., https://doi.org/10.3133/ofr6969.","productDescription":"9 p. ill., maps ;27 cm.","costCenters":[],"links":[{"id":147409,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c15a","contributors":{"authors":[{"text":"Davis, W. E.","contributorId":100844,"corporation":false,"usgs":true,"family":"Davis","given":"W.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":167520,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Akhrass, Mohammed N.","contributorId":74014,"corporation":false,"usgs":true,"family":"Akhrass","given":"Mohammed","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":167518,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gazzaz, Hisham","contributorId":77943,"corporation":false,"usgs":true,"family":"Gazzaz","given":"Hisham","email":"","affiliations":[],"preferred":false,"id":167519,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":15190,"text":"ofr69181 - 1969 - Sedimentary processes and distribution of particulate gold in northern Bering Sea","interactions":[{"subject":{"id":15190,"text":"ofr69181 - 1969 - Sedimentary processes and distribution of particulate gold in northern Bering Sea","indexId":"ofr69181","publicationYear":"1969","noYear":false,"title":"Sedimentary processes and distribution of particulate gold in northern Bering Sea"},"predicate":"SUPERSEDED_BY","object":{"id":6223,"text":"pp689 - 1972 - Sedimentary processes and distribution of particulate gold in the northern Bering Sea","indexId":"pp689","publicationYear":"1972","noYear":false,"title":"Sedimentary processes and distribution of particulate gold in the northern Bering Sea"},"id":1}],"supersededBy":{"id":6223,"text":"pp689 - 1972 - Sedimentary processes and distribution of particulate gold in the northern Bering Sea","indexId":"pp689","publicationYear":"1972","noYear":false,"title":"Sedimentary processes and distribution of particulate gold in the northern Bering Sea"},"lastModifiedDate":"2012-02-02T00:07:06","indexId":"ofr69181","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-181","title":"Sedimentary processes and distribution of particulate gold in northern Bering Sea","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69181","usgsCitation":"Nelson, H., and Hopkins, D.M., 1969, Sedimentary processes and distribution of particulate gold in northern Bering Sea: U.S. Geological Survey Open-File Report 69-181, 59 p. ill., maps ;27 cm., https://doi.org/10.3133/ofr69181.","productDescription":"59 p. ill., maps ;27 cm.","costCenters":[],"links":[{"id":148976,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0be4b07f02db5fbd6a","contributors":{"authors":[{"text":"Nelson, Hans","contributorId":46942,"corporation":false,"usgs":true,"family":"Nelson","given":"Hans","email":"","affiliations":[],"preferred":false,"id":170716,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hopkins, David Moody","contributorId":39778,"corporation":false,"usgs":true,"family":"Hopkins","given":"David","email":"","middleInitial":"Moody","affiliations":[],"preferred":false,"id":170715,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":14277,"text":"ofr69131 - 1969 - Principal facts on electrical soundings near Anchorage, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:06:48","indexId":"ofr69131","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-131","title":"Principal facts on electrical soundings near Anchorage, Alaska","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69131","usgsCitation":"Jackson, D.B., and Zohdy, A.A., 1969, Principal facts on electrical soundings near Anchorage, Alaska: U.S. Geological Survey Open-File Report 69-131, 2 p. ill., map ;29 cm., https://doi.org/10.3133/ofr69131.","productDescription":"2 p. ill., map ;29 cm.","costCenters":[],"links":[{"id":106423,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8362.htm","linkFileType":{"id":5,"text":"html"},"description":"8362"},{"id":146022,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db68a179","contributors":{"authors":[{"text":"Jackson, Dallas B.","contributorId":19947,"corporation":false,"usgs":true,"family":"Jackson","given":"Dallas","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":169194,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zohdy, Adel A. R.","contributorId":61799,"corporation":false,"usgs":true,"family":"Zohdy","given":"Adel","email":"","middleInitial":"A. R.","affiliations":[],"preferred":false,"id":169195,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15192,"text":"ofr70242 - 1969 - Geology of the Mackay 30-minute quadrangle, Idaho","interactions":[],"lastModifiedDate":"2012-02-02T00:07:06","indexId":"ofr70242","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"70-242","title":"Geology of the Mackay 30-minute quadrangle, Idaho","docAbstract":"The Jefferson Dolomite, Grand View Dolomite, and Three Forks Limestone, all of Devonian age, are the oldest rocks exposed in the quadrangle. Rocks that range from Mississippian to Permian in age are widespread; they are represented by the White Knob Limestone in the eastern part of the quadrangle and the Copper Basin Formation in the western part. The Copper Basin Formation, which is composed of non-carbonate detrital rocks, is interlayered with the White Knob Limestone near the middle of the quadrangle. This interlayering is herein interpreted to be the result of depositional interbedding, but it could be in part due to juxtaposition by faulting. The Challis Volcanics, of Tertiary age, cover much of the quadrangle, and except for a conspicuous basal conglomerate, lack distinctive subdivisions similar to those in neighboring areas. Alluvial deposits which may be in part as old as Pliocene are scattered through the quadrangle. Glaciation affected all higher parts of the quadrangle, and locally glacial deposits of at least three ages can be distinguished The latest two of these are probably of late Wisconsin Bull Lake and Pinedale ages. Basalt flows of probable Recent age extend into the southernmost part of the quadrangle and originate in part from vents there. \r\n\r\nIntrusive rocks, including plutons and related dikes of Tertiary age, are scattered throughout the quadrangle. They range from granite to quartz diorite in composition. The intrusive rocks seem to be related to the Challis Volcanics. \r\n\r\nThe rocks of the quadrangle were strongly deformed and eroded prior to the deposition of the Challis Volcanics. No thrust faults have been recognized although such faults are plentiful in the adjacent region. Deformation has continued until recent times. \r\n\r\nAll or parts of five mining districts are included in the quadrangle, and the total production probably exceeded $10,000,000. Mining has been quiet since World War II but activity has been renewed at times in the past and possibilities for the discovery of substantial new deposits seem promising. The mineral deposits formed largely by replacement, partly in areas of contact metamorphism. The metals present are varied but copper has been the main product. All of the deposits are believed to be related to the intrusions of Tertiary age.","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr70242","usgsCitation":"Nelson, W.H., and Ross, C.P., 1969, Geology of the Mackay 30-minute quadrangle, Idaho: U.S. Geological Survey Open-File Report 70-242, 165 p. ;27 cm., https://doi.org/10.3133/ofr70242.","productDescription":"165 p. ;27 cm.","costCenters":[],"links":[{"id":148998,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1970/0242/report-thumb.jpg"},{"id":44106,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1970/0242/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44107,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1970/0242/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44108,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1970/0242/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acce4b07f02db67ea74","contributors":{"authors":[{"text":"Nelson, Willis H.","contributorId":84777,"corporation":false,"usgs":true,"family":"Nelson","given":"Willis","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":170719,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ross, Clyde Polhemus","contributorId":71954,"corporation":false,"usgs":true,"family":"Ross","given":"Clyde","email":"","middleInitial":"Polhemus","affiliations":[],"preferred":false,"id":170718,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15467,"text":"ofr69209 - 1969 - Lunar crater morphology and relative age determination of lunar geologic units - Part 1, Classification; Part 2, Applications","interactions":[],"lastModifiedDate":"2012-02-02T00:07:04","indexId":"ofr69209","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-209","title":"Lunar crater morphology and relative age determination of lunar geologic units - Part 1, Classification; Part 2, Applications","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69209","usgsCitation":"Pohn, H.A., and Offield, T.W., 1969, Lunar crater morphology and relative age determination of lunar geologic units - Part 1, Classification; Part 2, Applications: U.S. Geological Survey Open-File Report 69-209, 35 p. ill., map ;27 cm., https://doi.org/10.3133/ofr69209.","productDescription":"35 p. ill., map ;27 cm.","costCenters":[],"links":[{"id":148665,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db648a10","contributors":{"authors":[{"text":"Pohn, Howard A.","contributorId":66681,"corporation":false,"usgs":true,"family":"Pohn","given":"Howard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":171179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Offield, Terry W.","contributorId":15196,"corporation":false,"usgs":true,"family":"Offield","given":"Terry","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":171178,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":13721,"text":"ofr69102 - 1969 - Preliminary report on the engineering geology of the Eldorado Springs quadrangle, Boulder and Jefferson Counties, Colorado","interactions":[],"lastModifiedDate":"2025-07-28T16:39:44.944153","indexId":"ofr69102","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-102","title":"Preliminary report on the engineering geology of the Eldorado Springs quadrangle, Boulder and Jefferson Counties, Colorado","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69102","usgsCitation":"Gardner, M.E., 1969, Preliminary report on the engineering geology of the Eldorado Springs quadrangle, Boulder and Jefferson Counties, Colorado: U.S. Geological Survey Open-File Report 69-102, Report: 9 p.; 5 Plates: 18.15 x 33.68 inches or smaller, https://doi.org/10.3133/ofr69102.","productDescription":"Report: 9 p.; 5 Plates: 18.15 x 33.68 inches or smaller","costCenters":[],"links":[{"id":493027,"rank":8,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8354.htm","linkFileType":{"id":5,"text":"html"}},{"id":42286,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0102/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42285,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0102/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42290,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0102/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42289,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0102/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42288,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0102/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42287,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0102/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":147285,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0102/report-thumb.jpg"}],"country":"United States","state":"Colorado","county":"Boulder County, Jefferson County","otherGeospatial":"Eldorado Springs quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -105.25,\n 40\n ],\n [\n -105.375,\n 40\n ],\n [\n -105.375,\n 39.875\n ],\n [\n -105.25,\n 39.875\n ],\n [\n -105.25,\n 40\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aafe4b07f02db66c931","contributors":{"authors":[{"text":"Gardner, Maxwell E.","contributorId":55016,"corporation":false,"usgs":true,"family":"Gardner","given":"Maxwell","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":168290,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":15195,"text":"ofr69182 - 1969 - Mercury and silver in soils over the eastern half of the Caribou stock, Boulder County, Colorado","interactions":[{"subject":{"id":15195,"text":"ofr69182 - 1969 - Mercury and silver in soils over the eastern half of the Caribou stock, Boulder County, Colorado","indexId":"ofr69182","publicationYear":"1969","noYear":false,"title":"Mercury and silver in soils over the eastern half of the Caribou stock, Boulder County, Colorado"},"predicate":"SUPERSEDED_BY","object":{"id":66681,"text":"i634 - 1971 - Maps showing soil analyses of interest for prospecting the Montezuma stock, Summit County, Colorado","indexId":"i634","publicationYear":"1971","noYear":false,"title":"Maps showing soil analyses of interest for prospecting the Montezuma stock, Summit County, Colorado"},"id":1}],"supersededBy":{"id":66681,"text":"i634 - 1971 - Maps showing soil analyses of interest for prospecting the Montezuma stock, Summit County, Colorado","indexId":"i634","publicationYear":"1971","noYear":false,"title":"Maps showing soil analyses of interest for prospecting the Montezuma stock, Summit County, Colorado"},"lastModifiedDate":"2012-02-02T00:07:06","indexId":"ofr69182","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-182","title":"Mercury and silver in soils over the eastern half of the Caribou stock, Boulder County, Colorado","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69182","usgsCitation":"Neuerburg, G.J., 1969, Mercury and silver in soils over the eastern half of the Caribou stock, Boulder County, Colorado: U.S. Geological Survey Open-File Report 69-182, 1 p. :2 folded maps ;27 cm., https://doi.org/10.3133/ofr69182.","productDescription":"1 p. :2 folded maps ;27 cm.","costCenters":[],"links":[{"id":149001,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a2ce4b07f02db613f76","contributors":{"authors":[{"text":"Neuerburg, George Joseph","contributorId":107702,"corporation":false,"usgs":true,"family":"Neuerburg","given":"George","email":"","middleInitial":"Joseph","affiliations":[],"preferred":false,"id":170723,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":15658,"text":"ofr69225 - 1969 - Maps showing locations of holes drilled in 1951 to 1953 by U.S. Geological Survey, Spring Creek Mesa and San Miguel bench areas, Uravan district, Montrose County, Colorado","interactions":[],"lastModifiedDate":"2021-11-11T12:01:06.311179","indexId":"ofr69225","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-225","title":"Maps showing locations of holes drilled in 1951 to 1953 by U.S. Geological Survey, Spring Creek Mesa and San Miguel bench areas, Uravan district, Montrose County, Colorado","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69225","usgsCitation":"Roach, C.H., and Alvord, D.C., 1969, Maps showing locations of holes drilled in 1951 to 1953 by U.S. Geological Survey, Spring Creek Mesa and San Miguel bench areas, Uravan district, Montrose County, Colorado: U.S. Geological Survey Open-File Report 69-225, Report 2 p.; 3 Plates: 35.28 × 27.90 inches or smaller, https://doi.org/10.3133/ofr69225.","productDescription":"Report 2 p.; 3 Plates: 35.28 × 27.90 inches or smaller","costCenters":[],"links":[{"id":106440,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8398.htm","linkFileType":{"id":5,"text":"html"},"description":"8398"},{"id":146512,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0225/report-thumb.jpg"},{"id":44624,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0225/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44625,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0225/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44622,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0225/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":44623,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0225/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Colorado","county":"Montrose County","otherGeospatial":"Spring Creek Mesa and San Miguel bench areas","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -108.746,\n 38.363\n ],\n [\n -108.578,\n 38.363\n ],\n [\n -108.578,\n 38.458\n ],\n [\n -108.746,\n 38.458\n ],\n [\n -108.746,\n 38.363\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db605b70","contributors":{"authors":[{"text":"Roach, Carl Houston","contributorId":103295,"corporation":false,"usgs":true,"family":"Roach","given":"Carl","email":"","middleInitial":"Houston","affiliations":[],"preferred":false,"id":171508,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alvord, Donald Clayton","contributorId":49356,"corporation":false,"usgs":true,"family":"Alvord","given":"Donald","email":"","middleInitial":"Clayton","affiliations":[],"preferred":false,"id":171507,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":15453,"text":"ofr69208 - 1969 - Mafic and ultramafic rocks from a layered pluton at Mount Fairweather, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:07:04","indexId":"ofr69208","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-208","title":"Mafic and ultramafic rocks from a layered pluton at Mount Fairweather, Alaska","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr69208","usgsCitation":"Plafker, G., and MacKevett, E., 1969, Mafic and ultramafic rocks from a layered pluton at Mount Fairweather, Alaska: U.S. Geological Survey Open-File Report 69-208, 10 p. ill., maps ;27 cm., https://doi.org/10.3133/ofr69208.","productDescription":"10 p. ill., maps ;27 cm.","costCenters":[],"links":[{"id":111663,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://www.dggs.dnr.state.ak.us/pubs/id/10822","linkFileType":{"id":5,"text":"html"}},{"id":149014,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db6491eb","contributors":{"authors":[{"text":"Plafker, George","contributorId":3920,"corporation":false,"usgs":false,"family":"Plafker","given":"George","email":"","affiliations":[],"preferred":false,"id":171159,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"MacKevett, E.M. Jr.","contributorId":58613,"corporation":false,"usgs":true,"family":"MacKevett","given":"E.M.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":171160,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":13139,"text":"ofr6958 - 1969 - Map showing location of sand, gravel, and till pits and quarries in the Rockville quadrangle, Connecticut","interactions":[],"lastModifiedDate":"2012-02-02T00:06:44","indexId":"ofr6958","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-58","title":"Map showing location of sand, gravel, and till pits and quarries in the Rockville quadrangle, Connecticut","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr6958","usgsCitation":"Colton, R.B., and Mallory, M.J., 1969, Map showing location of sand, gravel, and till pits and quarries in the Rockville quadrangle, Connecticut: U.S. Geological Survey Open-File Report 69-58, 66 p. ill., folded map ;29 cm., https://doi.org/10.3133/ofr6958.","productDescription":"66 p. ill., folded map ;29 cm.","costCenters":[],"links":[{"id":145301,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0058/report-thumb.jpg"},{"id":41542,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0058/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41543,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0058/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4fe4b07f02db628758","contributors":{"authors":[{"text":"Colton, Roger B.","contributorId":17967,"corporation":false,"usgs":true,"family":"Colton","given":"Roger","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":167301,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mallory, Michael J.","contributorId":59408,"corporation":false,"usgs":true,"family":"Mallory","given":"Michael","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":167302,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":13486,"text":"ofr6987 - 1969 - Evaluation of core data, physical properties, and oil yield USBM/AEC Colorado Core Hole no. 3 (Bronco BR-1)","interactions":[],"lastModifiedDate":"2012-02-02T00:06:37","indexId":"ofr6987","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1969","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":"69-87","title":"Evaluation of core data, physical properties, and oil yield USBM/AEC Colorado Core Hole no. 3 (Bronco BR-1)","docAbstract":"USBM/AEC Colorado Core Hole No. 3 (Bronco BR-1) is located in the SW1/4SW1/4SW1/4 sec. 14, T. 1 N., R. 98 W., Rio Blanco County, Colorado. The collar is at a ground elevation of 6,356 feet. The hole was core drilled between depths of 964 and 3,325 feet with a total depth of 3,797 feet. The hole was drilled to investigate geologic, geophysical and hydrological conditions at a possible in situ oil-shale retorting experiment site. The drill hole passed through 1,157 feet of alluvium and the Evacuation Creek Member of the Green River Formation, 1,603 feet of the Parachute Creek Member and penetrated into the Garden Gulch Member of the Green River Formation. In-bole density log/oil yield ratio interpretation indicates that two oil-shale zones exist which yield more than 20 gallons of shale oil per ton of rock; an upper zone lying between 1,271 and 1,750 feet in depth and a lower zone lying between 1,900 and 2,964 feet. Halite (sodium chloride salt) is found between 2,140 and 2,185 feet and nahcolite (sodium bicarbonate salt) between 2,195 and 2,700 feet. Nahcolite was present at one time above 2,195 feet but has been subsequently dissolved out by ground water. The core can be divided into six structural units based upon degree of fracturing. A highly fractured interval is found between 1,646 and 1,899 feet, which coincides with the dissolution or leached nahcolite zone. Physical property tests made on core samples between 1,356 and 3,253 feet give average values of 11,988 psi for uniaxial compressive strength, 1.38 X 10[superscript]6[superscript] psi for static Young's modulus and 11,809 fps for compressional velocity.","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr6987","usgsCitation":"Ege, J.R., Carroll, R.D., Way, R., and Magner, J.E., 1969, Evaluation of core data, physical properties, and oil yield USBM/AEC Colorado Core Hole no. 3 (Bronco BR-1): U.S. Geological Survey Open-File Report 69-87, 25 p. ill. (some folded, col.), map ;29 cm., https://doi.org/10.3133/ofr6987.","productDescription":"25 p. ill. (some folded, col.), map ;29 cm.","costCenters":[],"links":[{"id":144724,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0087/report-thumb.jpg"},{"id":41955,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41956,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41960,"rank":405,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-6.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41961,"rank":406,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-7.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41962,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0087/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41957,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41958,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":41959,"rank":404,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0087/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a09e4b07f02db5fae72","contributors":{"authors":[{"text":"Ege, John R.","contributorId":69534,"corporation":false,"usgs":true,"family":"Ege","given":"John","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":167874,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carroll, R. D.","contributorId":53373,"corporation":false,"usgs":true,"family":"Carroll","given":"R.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":167873,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Way, R.J.","contributorId":17238,"corporation":false,"usgs":true,"family":"Way","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":167872,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Magner, J. 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Chart 8530, and over 750 km of additional sounding lines made in 1965 and in 1968. Continuous reflection seismic records made along the same tracks as the bathymetric profiles served as the basis for the Isopach map. For the determination of sediment thicknesses a sound velocity in sediment of 1.5 km/sec was used. Scale of both maps is 1:83, 074 at Latitude N59°20'.
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