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","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp632","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1968, Aeromagnetic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut: U.S. Geological Survey Geophysical Investigations Map 632, 1 Plate: 22.07 x 32.24 inches, https://doi.org/10.3133/gp632.","productDescription":"1 Plate: 22.07 x 32.24 inches","costCenters":[],"links":[{"id":250047,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0632/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":490940,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_5999.htm","linkFileType":{"id":5,"text":"html"}},{"id":250046,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0632/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":253506,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0632/report-thumb.jpg"}],"scale":"24000","country":"United States","state":"Connecticut, Massachusetts","county":"Hampden County, Hartford County, Tolland County","otherGeospatial":"Springfield South quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -72.625,\n 42.125\n ],\n [\n -72.625,\n 42\n ],\n [\n -72.5,\n 42\n ],\n [\n -72.5,\n 42.125\n ],\n [\n -72.625,\n 42.125\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aeee4b07f02db69110a","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":533284,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":63783,"text":"gp634 - 1968 - Aeromagnetic map of the Webster quadrangle, Worcester County, Massachusetts and Windham County, Connecticut","interactions":[],"lastModifiedDate":"2025-06-18T18:46:31.911211","indexId":"gp634","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"634","title":"Aeromagnetic map of the Webster quadrangle, Worcester County, Massachusetts and Windham County, Connecticut","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp634","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1968, Aeromagnetic map of the Webster quadrangle, Worcester County, Massachusetts and Windham County, Connecticut: U.S. Geological Survey Geophysical Investigations Map 634, 1 Plate: 23.46 × 31.96 inches, https://doi.org/10.3133/gp634.","productDescription":"1 Plate: 23.46 × 31.96 inches","costCenters":[],"links":[{"id":249982,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0634/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":393561,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6001.htm"},{"id":253474,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0634/report-thumb.jpg"},{"id":249983,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0634/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"24000","country":"United States","state":"Connecticut, Massachusetts","county":"Windham County, Worcester County","otherGeospatial":"Webster quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -72,42 ], [ -72,42.125 ], [ -71.875,42.125 ], [ -71.875,42 ], [ -72,42 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae6e4b07f02db68baa7","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":533252,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":64473,"text":"i535A - 1968 - Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 74° to 87° W longitude","interactions":[],"lastModifiedDate":"2021-10-18T18:29:48.798065","indexId":"i535A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"535","chapter":"A","title":"Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 74° to 87° W longitude","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i535A","usgsCitation":"Zietz, I., Kirby, J., and Stockard, H.P., 1968, Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 74° to 87° W longitude: U.S. Geological Survey IMAP 535, 1 Plate: 50.81 × 26.08 inches, https://doi.org/10.3133/i535A.","productDescription":"1 Plate: 50.81 × 26.08 inches","costCenters":[],"links":[{"id":390615,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_1726.htm"},{"id":254950,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/0535a/report-thumb.jpg"},{"id":254949,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/imap/0535a/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":254948,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/0535a/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"1000000","country":"United States","state":"Delaware, Indiana Kentucky, Maryland, North Carolina, Ohio, Tennessee, Virginia, West Virginia","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -87,35 ], [ -87,39 ], [ -74,39 ], [ -74,35 ], [ -87,35 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db626f59","contributors":{"authors":[{"text":"Zietz, Isidore","contributorId":76708,"corporation":false,"usgs":true,"family":"Zietz","given":"Isidore","affiliations":[],"preferred":false,"id":271009,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirby, J.R.","contributorId":6428,"corporation":false,"usgs":true,"family":"Kirby","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":271008,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stockard, H. P.","contributorId":100077,"corporation":false,"usgs":true,"family":"Stockard","given":"H.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":271010,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":46267,"text":"ofr6833 - 1968 - Maps showing structure, overburden, and thickness for a rich oil-shale sequence in the Eocene Green River Formation, east-central Uinta Basin, Utah and Colorado","interactions":[],"lastModifiedDate":"2025-07-28T16:19:45.207486","indexId":"ofr6833","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","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":"68-33","title":"Maps showing structure, overburden, and thickness for a rich oil-shale sequence in the Eocene Green River Formation, east-central Uinta Basin, Utah and Colorado","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr6833","usgsCitation":"Cashion, W.B., 1968, Maps showing structure, overburden, and thickness for a rich oil-shale sequence in the Eocene Green River Formation, east-central Uinta Basin, Utah and Colorado: U.S. Geological Survey Open-File Report 68-33, 1 Plate: 37.48 x 22.66 inches, https://doi.org/10.3133/ofr6833.","productDescription":"1 Plate: 37.48 x 22.66 inches","costCenters":[],"links":[{"id":493021,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8309.htm","linkFileType":{"id":5,"text":"html"}},{"id":83250,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1968/0033/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":171576,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"250000","country":"United States","state":"Colorado, Utah","otherGeospatial":"east-central Uinta Basin, Eocene Green River Formation","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -109.9670,\n 40.101\n ],\n [\n -109.9670,\n 39.604\n ],\n [\n -108.882,\n 39.604\n ],\n [\n -108.882,\n 40.101\n ],\n [\n -109.9670,\n 40.101\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a19e4b07f02db6060f4","contributors":{"authors":[{"text":"Cashion, W. B.","contributorId":75525,"corporation":false,"usgs":true,"family":"Cashion","given":"W.","middleInitial":"B.","affiliations":[],"preferred":false,"id":232972,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":63806,"text":"gp620 - 1968 - Aeromagnetic map of the Warren quadrangle, Worcester, Hampden, and Hampshire Counties, Massachusetts","interactions":[],"lastModifiedDate":"2026-01-22T18:50:53.19875","indexId":"gp620","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"620","title":"Aeromagnetic map of the Warren quadrangle, Worcester, Hampden, and Hampshire Counties, Massachusetts","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp620","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1968, Aeromagnetic map of the Warren quadrangle, Worcester, Hampden, and Hampshire Counties, Massachusetts: U.S. Geological Survey Geophysical Investigations Map 620, 1 Plate: 23.51 x 29.18 inches, https://doi.org/10.3133/gp620.","productDescription":"1 Plate: 23.51 x 29.18 inches","costCenters":[],"links":[{"id":490886,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_5987.htm","linkFileType":{"id":5,"text":"html"}},{"id":250028,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0620/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":250029,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0620/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":253497,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0620/report-thumb.jpg"}],"scale":"24000","country":"United States","state":"Massachusetts","county":"Hampden County, Hampshire County, Worcester County","otherGeospatial":"Warren quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -72.25,\n 42.25\n ],\n [\n -72.25,\n 42.125\n ],\n [\n -72.125,\n 42.125\n ],\n [\n -72.125,\n 42.25\n ],\n [\n -72.25,\n 42.25\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae7e4b07f02db68c077","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":533275,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":63579,"text":"gp615 - 1968 - Bouguer gravity map of parts of Maricopa, Pima, Pinal, and Yuma Counties, Arizona","interactions":[],"lastModifiedDate":"2025-06-16T21:23:37.281461","indexId":"gp615","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"615","title":"Bouguer gravity map of parts of Maricopa, Pima, Pinal, and Yuma Counties, Arizona","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp615","usgsCitation":"Peterson, D.L., 1968, Bouguer gravity map of parts of Maricopa, Pima, Pinal, and Yuma Counties, Arizona: U.S. Geological Survey Geophysical Investigations Map 615, 1 Plate: 42.73 x 28.60 inches, https://doi.org/10.3133/gp615.","productDescription":"1 Plate: 42.73 x 28.60 inches","costCenters":[],"links":[{"id":490805,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_5982.htm","linkFileType":{"id":5,"text":"html"}},{"id":249766,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0615/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":249767,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0615/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":253298,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0615/report-thumb.jpg"}],"scale":"250000","country":"United States","state":"Arizona","county":"Maricopa County, Pima County, Pinal County, Yuma County","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.5,\n 33.7597\n ],\n [\n -113.5,\n 32.375\n ],\n [\n -111,\n 32.375\n ],\n [\n -111,\n 33.7597\n ],\n [\n -113.5,\n 33.7597\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0de4b07f02db5fcf3c","contributors":{"authors":[{"text":"Peterson, D. L.","contributorId":36484,"corporation":false,"usgs":true,"family":"Peterson","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":269171,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":14349,"text":"ofr68148 - 1968 - Mineral investigations in the Jabal Radwa quadrangle, northwest Hijaz, Saudi Arabia","interactions":[],"lastModifiedDate":"2012-02-02T00:07:07","indexId":"ofr68148","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","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":"68-148","title":"Mineral investigations in the Jabal Radwa quadrangle, northwest Hijaz, Saudi Arabia","docAbstract":"Wadi sediments in the Jabal Radwa quadrangle in the Northwest Hijaz were sampled for trace element analysis as part of a mineral reconnaissance of Western Saudi Arabia that is being made by the Ministry of Petroleum and Mineral Resources and the U.S. Geological Survey. The Jabal Radwa quadrangle lies between 24?30? and 25?N. latitude and between 38? and 39? longitude. A photomosaic base at a scale of 1:100,000 was used for map compilation.\r\n\r\nExcept for basalt flows of Tertiary or Quaternary age all the rocks of the area are believed to be of Precambrian age. An older group of slightly metamorphosed mafic and felsic volcanic rocks with interbedded metasedimentary rocks is unconformably overlain by argillite and slightly metamorphosed sandstone and conglomerate. The bedded rocks are cut by many intrusions that range in composition from olivine gabbro to syenite but are predominantly granite, granodiorite, and diorite.\r\n\r\nLittle is known of the structure of the rocks. The layered rocks are strongly folded and commonly dip at high angles. Faults are common and many appear to be large; some contacts have been offset several hundred meters. Most of the larger faults trend northeasterly or northwesterly but some trend east and others nearly north.","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr68148","usgsCitation":"Johnson, R.F., and Trent, V.A., 1968, Mineral investigations in the Jabal Radwa quadrangle, northwest Hijaz, Saudi Arabia: U.S. Geological Survey Open-File Report 68-148, 10 p. ill. (some folded, col.), folded col. map ;27 cm., https://doi.org/10.3133/ofr68148.","productDescription":"10 p. ill. (some folded, col.), folded col. map ;27 cm.","costCenters":[],"links":[{"id":148341,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1968/0148/report-thumb.jpg"},{"id":43021,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1968/0148/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":43022,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1968/0148/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a61e4b07f02db635ae6","contributors":{"authors":[{"text":"Johnson, Robert Francis","contributorId":8864,"corporation":false,"usgs":true,"family":"Johnson","given":"Robert","email":"","middleInitial":"Francis","affiliations":[],"preferred":false,"id":169303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Trent, Virgil A.","contributorId":47381,"corporation":false,"usgs":true,"family":"Trent","given":"Virgil","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":169304,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":63776,"text":"gp627 - 1968 - Aeromagnetic map of the Worthington quadrangle and parts of the Plainfield and Peru quadrangles, Berkshire and Hampshire Counties, Massachusetts","interactions":[],"lastModifiedDate":"2025-06-18T18:18:55.986911","indexId":"gp627","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"627","title":"Aeromagnetic map of the Worthington quadrangle and parts of the Plainfield and Peru quadrangles, Berkshire and Hampshire Counties, Massachusetts","docAbstract":"No abstract available.
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","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i533A","usgsCitation":"Zietz, I., and Kirby, J., 1968, Transcontinental geophysical survey (35°-39° N) magnetic map from 100° to 112° W longitude: U.S. Geological Survey IMAP 533, 1 Plate: 46.51 × 25.67 inches, https://doi.org/10.3133/i533A.","productDescription":"1 Plate: 46.51 × 25.67 inches","costCenters":[],"links":[{"id":390616,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22881.htm"},{"id":254958,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/imap/0533a/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":254957,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/0533a/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":254959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/0533a/report-thumb.jpg"}],"scale":"1000000","country":"United States","state":"Arizona, Colorado, Kansas, New Mexico, Oklahoma, Texas, Utah","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -112,35 ], [ -112,39 ], [ -100,39 ], [ -100,35 ], [ -112,35 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db626f74","contributors":{"authors":[{"text":"Zietz, Isidore","contributorId":76708,"corporation":false,"usgs":true,"family":"Zietz","given":"Isidore","affiliations":[],"preferred":false,"id":271020,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirby, J.R.","contributorId":6428,"corporation":false,"usgs":true,"family":"Kirby","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":271019,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":64475,"text":"i536 - 1968 - Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 63° to 74° W longitude","interactions":[],"lastModifiedDate":"2021-10-18T18:25:24.911815","indexId":"i536","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"536","title":"Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 63° to 74° W longitude","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i536","usgsCitation":"Zietz, I., Stockard, H.P., and Kirby, J., 1968, Transcontinental geophysical survey (35°-39° N) magnetic and bathymetric map from 63° to 74° W longitude: U.S. Geological Survey IMAP 536, 1 Plate: 43.33 × 23.53 inches, https://doi.org/10.3133/i536.","productDescription":"1 Plate: 43.33 × 23.53 inches","costCenters":[],"links":[{"id":390614,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_1725.htm"},{"id":254956,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/0536/report-thumb.jpg"},{"id":254955,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/imap/0536/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":254954,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/0536/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"1000000","otherGeospatial":"Atlantic Ocean","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -74,\n 35\n ],\n [\n -63,\n 35\n ],\n [\n -63,\n 39\n ],\n [\n -74,\n 39\n ],\n [\n -74,\n 35\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db627077","contributors":{"authors":[{"text":"Zietz, Isidore","contributorId":76708,"corporation":false,"usgs":true,"family":"Zietz","given":"Isidore","affiliations":[],"preferred":false,"id":271014,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stockard, H. P.","contributorId":100077,"corporation":false,"usgs":true,"family":"Stockard","given":"H.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":271015,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kirby, J.R.","contributorId":6428,"corporation":false,"usgs":true,"family":"Kirby","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":271013,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":15648,"text":"ofr68229 - 1968 - Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska","interactions":[{"subject":{"id":15648,"text":"ofr68229 - 1968 - Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska","indexId":"ofr68229","publicationYear":"1968","noYear":false,"title":"Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska"},"predicate":"SUPERSEDED_BY","object":{"id":39672,"text":"pp625B - 1970 - Geology and lode-gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska","indexId":"pp625B","publicationYear":"1970","noYear":false,"chapter":"B","title":"Geology and lode-gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska"},"id":1}],"supersededBy":{"id":39672,"text":"pp625B - 1970 - Geology and lode-gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska","indexId":"pp625B","publicationYear":"1970","noYear":false,"title":"Geology and lode-gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska"},"lastModifiedDate":"2023-07-24T20:55:05.501281","indexId":"ofr68229","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","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":"68-229","title":"Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska","docAbstract":"Nuka Bay is a deep, T-shaped fiord on the southeast coast of the Kenai Peninsula approximately 60 miles southwest of the port of Seward. Gold-bearing quartz veins were discovered in the area in 1918, and between 1920 and 1940 several small mines were in operation around the North and West Arms of the bay. Estimated total production may have been as much as $164,000.
Bedrock in the Nuka Bay area is a thick Cretaceous section of interbedded slate and graywacke that has been regionally deformed into a series of relatively open, but overturned, folds plunging at low angler to the north-northeast. Except at the folds, bedding and foliation (slaty cleavage) are parallel and dip steeply to the northwest. Small granodiorite dikes fill tensional cross joints in the folded sediments, and a few granodiorite sills are intruded along bedding and foliation planes.
Quartz veins are abundant throughout the region, but contain significant amounts of gold only in a relatively small area, 8 miles long and 6 miles wide, around North and West Arms. The veins are generally less than 5 feet wide and 300 feet long and consist chiefly of massive white quartz. Arsenopyrite with minor amounts of other sulfide and native gold occurs as irregular masses and pods in the quartz. The larger and more productive veins dip steeply and strike east-west, almost normal to the regional structure, and appear to be confined to competent graywacke beds or dikes. Random channel sampling of the quartz veins indicates gold values as high as 9 ounces per ton across zones as wide as 2 feet.
A study of the stream sediments throughout the area disclosed several drainages with detectable gold; one, Babcock Creek, contained 0.5 ppm gold, the others from 0.02 to 0.07 ppm. No base metal anomalies were detected. The area appears to warrant further investigation as a potential producer of small amounts of gold. Diligent smell-scale mining may be economically feasible.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr68229","usgsCitation":"Richter, D.H., 1968, Geology and lode gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska: U.S. Geological Survey Open-File Report 68-229, iv, 52 p., https://doi.org/10.3133/ofr68229.","productDescription":"iv, 52 p.","costCenters":[],"links":[{"id":419268,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1968/0229/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":146904,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1968/0229/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Kenai Peninsula, Nuka Bay area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -150.66230433486226,\n 59.562476930416636\n ],\n [\n -150.66230433486226,\n 59.302789270633326\n ],\n [\n -150.29991099261446,\n 59.302789270633326\n ],\n [\n -150.29991099261446,\n 59.562476930416636\n ],\n [\n -150.66230433486226,\n 59.562476930416636\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad9e4b07f02db685281","contributors":{"authors":[{"text":"Richter, Donald H.","contributorId":61021,"corporation":false,"usgs":true,"family":"Richter","given":"Donald","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":171491,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":15885,"text":"ofr68247 - 1968 - Availability of palynological material from Naval Petroleum Reserve No.4, XI: Meade Test Well No. 1","interactions":[],"lastModifiedDate":"2025-06-27T17:03:58.039713","indexId":"ofr68247","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","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":"68-247","title":"Availability of palynological material from Naval Petroleum Reserve No.4, XI: Meade Test Well No. 1","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr68247","usgsCitation":"Scott, R., 1968, Availability of palynological material from Naval Petroleum Reserve No.4, XI: Meade Test Well No. 1: U.S. Geological Survey Open-File Report 68-247, 3 p., https://doi.org/10.3133/ofr68247.","productDescription":"3 p.","costCenters":[],"links":[{"id":491548,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1968/0247/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":148405,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1968/0247/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d7b4","contributors":{"authors":[{"text":"Scott, Richard A.","contributorId":14414,"corporation":false,"usgs":true,"family":"Scott","given":"Richard A.","affiliations":[],"preferred":false,"id":171882,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":64474,"text":"i532A - 1968 - Transcontinental geophysical survey (35°–39° N) magnetic map from 112° W longitude to the coast of California","interactions":[],"lastModifiedDate":"2021-10-20T20:50:58.067109","indexId":"i532A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"532","chapter":"A","title":"Transcontinental geophysical survey (35°–39° N) magnetic map from 112° W longitude to the coast of California","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i532A","usgsCitation":"Zietz, I., and Kirby, J., 1968, Transcontinental geophysical survey (35°–39° N) magnetic map from 112° W longitude to the coast of California: U.S. Geological Survey IMAP 532, 1 Plate: 46.69 × 25.25 inches, https://doi.org/10.3133/i532A.","productDescription":"1 Plate: 46.69 × 25.25 inches","costCenters":[],"links":[{"id":254953,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/0532a/report-thumb.jpg"},{"id":254951,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/0532a/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":254952,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/imap/0532a/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":390704,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_1728.htm"}],"scale":"1000000","country":"United States","state":"Arizona, California, Nevada, Utah","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124,35 ], [ -124,39 ], [ -112,39 ], [ -112,35 ], [ -124,35 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db627131","contributors":{"authors":[{"text":"Zietz, Isidore","contributorId":76708,"corporation":false,"usgs":true,"family":"Zietz","given":"Isidore","affiliations":[],"preferred":false,"id":271012,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirby, J.R.","contributorId":6428,"corporation":false,"usgs":true,"family":"Kirby","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":271011,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":63814,"text":"gp618 - 1968 - Aeromagnetic map of the Springfield North quadrangle, Hampden and Hampshire Counties, Massachusetts","interactions":[],"lastModifiedDate":"2026-01-22T18:49:36.769551","indexId":"gp618","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"618","title":"Aeromagnetic map of the Springfield North quadrangle, Hampden and Hampshire Counties, Massachusetts","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp618","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1968, Aeromagnetic map of the Springfield North quadrangle, Hampden and Hampshire Counties, Massachusetts: U.S. Geological Survey Geophysical Investigations Map 618, 1 Plate: 24.14 x 29.48 inches, https://doi.org/10.3133/gp618.","productDescription":"1 Plate: 24.14 x 29.48 inches","costCenters":[],"links":[{"id":250045,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0618/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":250044,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0618/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":253505,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0618/report-thumb.jpg"},{"id":490885,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_5985.htm","linkFileType":{"id":5,"text":"html"}}],"scale":"24000","country":"United States","state":"Massachusetts","county":"Hampden County, Hampshire County","otherGeospatial":"Springfield North quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -72.625,\n 42.25\n ],\n [\n -72.625,\n 42.125\n ],\n [\n -72.5,\n 42.125\n ],\n [\n -72.5,\n 42.25\n ],\n [\n -72.625,\n 42.25\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aeee4b07f02db691187","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":533283,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":3289,"text":"cir548 - 1968 - Reports and maps of the Geological Survey released only in the open files, 1967","interactions":[],"lastModifiedDate":"2012-02-02T00:05:28","indexId":"cir548","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"548","title":"Reports and maps of the Geological Survey released only in the open files, 1967","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, Geological Survey,","doi":"10.3133/cir548","usgsCitation":"Weld, B., Griffin, M.S., and Brett, G.W., 1968, Reports and maps of the Geological Survey released only in the open files, 1967: U.S. Geological Survey Circular 548, 21 p. ;27 cm., https://doi.org/10.3133/cir548.","productDescription":"21 p. ;27 cm.","costCenters":[],"links":[{"id":117575,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1968/0548/report-thumb.jpg"},{"id":30285,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1968/0548/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a58e4b07f02db62f422","contributors":{"authors":[{"text":"Weld, Betsy A.","contributorId":68714,"corporation":false,"usgs":true,"family":"Weld","given":"Betsy A.","affiliations":[],"preferred":false,"id":146599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Griffin, Margaret S.","contributorId":101252,"corporation":false,"usgs":true,"family":"Griffin","given":"Margaret","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":146600,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brett, George W.","contributorId":58622,"corporation":false,"usgs":true,"family":"Brett","given":"George","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":146598,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":2616,"text":"wsp1663C - 1968 - Ground-water resources of the Acu Valley, Rio Grande Norte, Brazil","interactions":[],"lastModifiedDate":"2012-02-02T00:05:28","indexId":"wsp1663C","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1663","chapter":"C","title":"Ground-water resources of the Acu Valley, Rio Grande Norte, Brazil","docAbstract":"The Acu Valley is the lower part of the Rio Piranhas valley in the northwestern part of the State of Rio Grande do Norte, Brazil. It begins where the Rio Piranhas leaves the crystalline Precambrian rocks to flow across the outcrop of sedimentary rocks. The area considered in this report extends northward for about 45 kilometers; it is terminated arbitrarily where encroachment by sea water has contaminated the aquifer and imparted a disagreeable saline taste to the water in it. The boundary was not determined in the field, however, for lack of special equipment. Part of the extensive uplands on either side of the valley are included. This makes the total area approximately 2,500 square kilometers. The largest town, Acu, had a population of about 8,000 in 1960. \r\n\r\nThe area is considered to be part of the Drought Polygon of northeast Brazil because the precipitation, although averaging 448 millimeters annually at Acu, varies widely from year to year and often is deficient for many months. The precipitation has been supplemented by use of irrigation wells, but irrigated agriculture is not yet far advanced, and the quantities of water used in irrigation are small. \r\n\r\nGeologically, the area consists of basement crystalline rocks (Precambrian), a wedge of sedimentary rocks thickening northward (Cretaceous), and alluvial sediments constituting a narrow band in the bottom of the valley (Alluvium and terrace deposits). The crystalline rocks contain water mainly in fractures and, in general, are impermeable. The sedimentary rocks of Cretaceous age comprise two units: a thick but fine-grained sandstone grading upward into siltstone and shale (Acu Sandstone), and limestone and dolomite with an included shale zone (Jandaira Limestone). The sandstone especially and the limestone to a lesser degree are ground-water reservoirs of large capacity. The limestone has been tapped at several places, but the sandstone and its contained water are practically untested and, hence, imperfectly understood. \r\n\r\nThe alluvium of the first terrace is the aquifer supplying most of the ground water being used in the area. Wells in the alluvium yield as much as S0,000 liters per hour. Larger yields probably could be obtained from wells designated to take full advantage of the aquifer. There are in the valley about 300 dug wells which are used for irrigation. Half of these are equipped with pumps and engines. The rest, together with about 500 drive-point wells, are equipped with manual or windmill-driven pumps. In addition to irrigation, the water is used in homes and for cattle. The quantities of water currently used in irrigation are relatively small, both per hectare and in the area as a whole, but .this will probably increase substantially when intensive irrigation becomes a reality. The annual pumpage from the alluvium, nearly constant since 1959, was about 2.5 million cubic meters in 1964, which is only about 90 cubic meters from each hectare-meter of saturated alluvium. This amount would lower the water table about 1 meter in 11 years, if there were no recharge. Actually, no such decline is likely to occur, because the recharge from precipitation alone is estimated to be more than enough to replace the water currently being pumped. \r\n\r\nChemical analyses of eight samples show that the ground water in the alluvium is acceptable for most uses. The water in the Acu Sandstone and Jandazra Limestone is more mineralized than that in the alluvium and at some places, at least, is not acceptable for human consumption. The available chemical data on this water, however, are not adequate to judge fully the quality of the water in these formations. \r\n\r\nIt is estimated that about .'22 million cubic meters of water would be needed annually if irrigation were extended to all the bottom land, which totals about 25,000 hectares. This amount is only one-fourth to one-half the estimated recharge from precipitation alone. The present rate of application of water is very low ","language":"ENGLISH","publisher":"U.S. G.P.O.,","doi":"10.3133/wsp1663C","usgsCitation":"Rodis, H.G., and de Castro Araujo, J.M., 1968, Ground-water resources of the Acu Valley, Rio Grande Norte, Brazil: U.S. Geological Survey Water Supply Paper 1663, iv, 34 p. :ill. ;24 cm., https://doi.org/10.3133/wsp1663C.","productDescription":"iv, 34 p. :ill. ;24 cm.","costCenters":[],"links":[{"id":138848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/1663c/report-thumb.jpg"},{"id":28907,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wsp/1663c/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":28908,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/1663c/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d564","contributors":{"authors":[{"text":"Rodis, Harry G.","contributorId":25141,"corporation":false,"usgs":true,"family":"Rodis","given":"Harry","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":145500,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"de Castro Araujo, Jonas Maria.","contributorId":72648,"corporation":false,"usgs":true,"family":"de Castro Araujo","given":"Jonas","email":"","middleInitial":"Maria.","affiliations":[],"preferred":false,"id":145501,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}