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1968 - Computer technique for tracing seismic rays in two-dimensional geological models","interactions":[{"subject":{"id":16658,"text":"ofr68334 - 1968 - Computer technique for tracing seismic rays in two-dimensional geological models","indexId":"ofr68334","publicationYear":"1968","noYear":false,"title":"Computer technique for tracing seismic rays in two-dimensional geological models"},"predicate":"SUPERSEDED_BY","object":{"id":70042621,"text":"70042621 - 1970 - A computer program to trace seismic ray distribution in complex two-dimensional geological models","indexId":"70042621","publicationYear":"1970","noYear":false,"title":"A computer program to trace seismic ray distribution in complex two-dimensional geological models"},"id":1}],"supersededBy":{"id":70042621,"text":"70042621 - 1970 - A computer program to trace seismic ray distribution in complex two-dimensional geological models","indexId":"70042621","publicationYear":"1970","noYear":false,"title":"A computer program to trace seismic ray distribution in complex two-dimensional geological models"},"lastModifiedDate":"2013-01-14T16:20:41","indexId":"ofr68334","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":"68-334","title":"Computer technique for tracing seismic rays in two-dimensional geological models","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr68334","usgsCitation":"Yacoub, N.K., Scott, J.H., and McKeown, F.A., 1968, Computer technique for tracing seismic rays in two-dimensional geological models: U.S. Geological Survey Open-File Report 68-334, 65 p. ill., maps ;27 cm., https://doi.org/10.3133/ofr68334.","productDescription":"65 p. ill., maps ;27 cm.","costCenters":[],"links":[{"id":149544,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b17e4b07f02db6a651d","contributors":{"authors":[{"text":"Yacoub, Nazieh K.","contributorId":84389,"corporation":false,"usgs":true,"family":"Yacoub","given":"Nazieh","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":173233,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scott, James Henry","contributorId":60211,"corporation":false,"usgs":true,"family":"Scott","given":"James","email":"","middleInitial":"Henry","affiliations":[],"preferred":false,"id":173232,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McKeown, F. A.","contributorId":106100,"corporation":false,"usgs":true,"family":"McKeown","given":"F.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":173234,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":16487,"text":"ofr68318 - 1968 - Generation of housing quality data from multiband aerial photographs","interactions":[],"lastModifiedDate":"2012-02-02T00:07:05","indexId":"ofr68318","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":"68-318","title":"Generation of housing quality data from multiband aerial photographs","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr68318","usgsCitation":"Wellar, B.S., 1968, Generation of housing quality data from multiband aerial photographs: U.S. Geological Survey Open-File Report 68-318, 104 p. ill. ;27 cm., https://doi.org/10.3133/ofr68318.","productDescription":"104 p. ill. ;27 cm.","costCenters":[],"links":[{"id":148787,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6aebde","contributors":{"authors":[{"text":"Wellar, Barry S.","contributorId":105321,"corporation":false,"usgs":true,"family":"Wellar","given":"Barry","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":172932,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":16488,"text":"ofr68319 - 1968 - Thermal infrared imagery in urban studies","interactions":[],"lastModifiedDate":"2012-02-02T00:07:05","indexId":"ofr68319","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":"68-319","title":"Thermal infrared imagery in urban studies","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr68319","usgsCitation":"Wellar, B.S., 1968, Thermal infrared imagery in urban studies: U.S. Geological Survey Open-File Report 68-319, 30 p. ill., maps ;27 cm., https://doi.org/10.3133/ofr68319.","productDescription":"30 p. ill., maps ;27 cm.","costCenters":[],"links":[{"id":95389,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1968/0319/report.pdf","size":"2456","linkFileType":{"id":1,"text":"pdf"}},{"id":148788,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1968/0319/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a57e4b07f02db62e15b","contributors":{"authors":[{"text":"Wellar, Barry S.","contributorId":105321,"corporation":false,"usgs":true,"family":"Wellar","given":"Barry","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":172933,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":33966,"text":"b1251J - 1968 - Upper Cretaceous and lower Tertiary rocks, Berkeley and San Leandro Hills, California","interactions":[],"lastModifiedDate":"2012-02-02T00:09:29","indexId":"b1251J","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":306,"text":"Bulletin","code":"B","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1251","chapter":"J","title":"Upper Cretaceous and lower Tertiary rocks, Berkeley and San Leandro Hills, California","language":"ENGLISH","publisher":"U.S. Govt. 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Off.,","doi":"10.3133/b1251J","usgsCitation":"Case, J.E., 1968, Upper Cretaceous and lower Tertiary rocks, Berkeley and San Leandro Hills, California: U.S. Geological Survey Bulletin 1251, 29 p, https://doi.org/10.3133/b1251J.","productDescription":"29 p","costCenters":[],"links":[{"id":109673,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_21335.htm","linkFileType":{"id":5,"text":"html"},"description":"21335"},{"id":167493,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/1251j/report-thumb.jpg"},{"id":61885,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/bul/1251j/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":61886,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/1251j/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a25e4b07f02db60e6be","contributors":{"authors":[{"text":"Case, James E.","contributorId":68702,"corporation":false,"usgs":true,"family":"Case","given":"James","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":212245,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":37442,"text":"ssrw119 - 1968 - Organochlorine pesticides in the environment","interactions":[],"lastModifiedDate":"2020-02-24T06:40:01","indexId":"ssrw119","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":83,"text":"Special Scientific Report - Wildlife","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"119","title":"Organochlorine pesticides in the environment","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Fish and Wildlife Service","usgsCitation":"Stickel, L.F., 1968, Organochlorine pesticides in the environment: Special Scientific Report - Wildlife 119, iv, 32 p.","productDescription":"iv, 32 p.","costCenters":[],"links":[{"id":167829,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a7d4","contributors":{"authors":[{"text":"Stickel, Lucille F.","contributorId":76598,"corporation":false,"usgs":true,"family":"Stickel","given":"Lucille","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":218086,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2316,"text":"wsp1757I - 1968 - Ground-water hydrology of the Chad Basin in Bornu and Dikwa Emirates, northeastern Nigeria, with special emphasis on the flow life of the artesian system","interactions":[],"lastModifiedDate":"2012-02-02T00:05:19","indexId":"wsp1757I","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":"1757","chapter":"I","title":"Ground-water hydrology of the Chad Basin in Bornu and Dikwa Emirates, northeastern Nigeria, with special emphasis on the flow life of the artesian system","docAbstract":"Bornu and Dikwa Emirates lie in the Nigerian sector of the Chad Basin, a vast region of interior drainage encompassing about 600,000 square miles of north-central Africa. The report area includes about 25,000 square miles of the basin that lie in Nigeria. Most of the area is a featureless plain that slopes gently northeast and east from the uplands of central Nigeria towards Lake Chad. On its eastern side the lake has one surface outlet which overflows only during exceptionally high stages of the lake. This outlet spills into the channel of Bahr al Ghazal, which in turn drains into the Bod616 depression. Because the lake is shallow, the shoreline fluctuates markedly with high and low stages corresponding to the wet and dry seasons. The semiarid climate of Bornu and Dikwa Emirates is characterized by a long dry season and a short wet season that correspond to seasonal winds. Annual rainfall ranges from 15 inches in the northern part of the area to 32 inches in the southern. \r\n\r\nThe Chad Basin in Dikwa and Bornu Emirates is underlain by interbedded sand and clay, collectively termed the Chad Formation. These alluvial and lactustrine sediments were deposited in or near Lake Chad whet it occupied a much greater area during Pliocene and Pleistocene time. The Chad Formation has a very slight primary dip in the direction of Lake Chad and conforms to the gentle slope of land surface. The known thickness of the formation ranges from a few feet where it overlies bedrock on the periphery of the basin to at least 1,800 feet at Maiduguri; however, its total thickness probably exceeds 2,000 feet in the central part of the basin. \r\n\r\nThree water-bearing units termed upper, middle, and lower zones occur within the Chad Formation. The upper zone yields water to numerous dug wells throughout the rural areas and also is .the major source of the Maiduguri municipal water .supply. The middle zone yields water from flowing artesian boreholes that have heads ranging from a few feet to 70 feet above land surface throughout a 13,000 square-mile area of the basin in Nigeria. The lower zone also yields water from flowing boreholes ; however, its areal extent has not been proved beyond the environs of Maiduguri. \r\n\r\nThe present investigation is concerned primarily with the middle zone, which is the source of water for some 190 flowing boreholes used as little-watering points in the Nigerian sector of the Chad Basin. The thickness of loads of waterbearing sand in the middle zone ranges from less than 1 foot to 200 feet, and the artesian head ranges from land surface at Maiduguri to 70 feet above land surface at Lake Chad. The depth to the top of the middle zone in the area of flowing boreholes ranges from 500 to 1,250 feet below land surface. The waterbearing properties of the middle zone differ greatly from place to place. Also, the yields of individual flowing boreholes generally range from 50 to 20,000 imperial gallons per hour (gph). On the basis of water availability, the middle zone can be divided as follows : Areas of high-, moderate-, and low-yield artesian aquifer ; areas of low- and moderate-yield subartesian aquifer ; and an area where the yields from boreholes are insignificant or the aquifer is missing. Recommended maximum rates of long-term withdrawal from individual boreholes for the three artesian areas range from 100 to 5,000 gph with boreholes spaced 5 to 10 miles apart. By limiting flows to the recommended maximum rates, the boreholes should continue to flow for at least 30 years. The present average use per borehole (265 gph in 1965) is considerably less than the recommended maximum rates. \r\n\r\nRecharge to the upper zone occurs in significant but as yet unmeasured quantities, mostly in the vicinity of the major streams. Apparently, however, no significant amount of recharge reaches the middle zone from the Upper zone. Although the middle zone is, in effect, being 'mined' by existing flowing wells, the present (1965) rate of withdrawal i","language":"ENGLISH","publisher":"U.S. Govt. Print. 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1968 - Geologic map of the Riverside quadrangle, Butler and Warren Counties, Kentucky","interactions":[],"lastModifiedDate":"2012-02-10T00:10:30","indexId":"gq736","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":316,"text":"Geologic Quadrangle","code":"GQ","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"736","title":"Geologic map of the Riverside quadrangle, Butler and Warren Counties, Kentucky","language":"ENGLISH","doi":"10.3133/gq736","usgsCitation":"Shawe, F.R., 1968, Geologic map of the Riverside quadrangle, Butler and Warren Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle 736, 1 map :col. ;79 x 90 cm., https://doi.org/10.3133/gq736.","productDescription":"1 map :col. ;79 x 90 cm.","costCenters":[],"links":[{"id":103457,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_2043.htm","linkFileType":{"id":5,"text":"html"},"description":"2043"},{"id":182977,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"24000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -86.61749999999999,37.1175 ], [ -86.61749999999999,37.25 ], [ -86.5,37.25 ], [ -86.5,37.1175 ], [ -86.61749999999999,37.1175 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aeee4b07f02db6912ab","contributors":{"authors":[{"text":"Shawe, Fred R.","contributorId":91516,"corporation":false,"usgs":true,"family":"Shawe","given":"Fred","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":266250,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":61758,"text":"gq729 - 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1968 - Geologic map of the Fish Lake quadrangle, Fremont County, Wyoming","interactions":[],"lastModifiedDate":"2012-02-10T00:10:51","indexId":"gq724","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":316,"text":"Geologic Quadrangle","code":"GQ","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"724","title":"Geologic map of the Fish Lake quadrangle, Fremont County, Wyoming","language":"ENGLISH","doi":"10.3133/gq724","usgsCitation":"Rohrer, W.L., 1968, Geologic map of the Fish Lake quadrangle, Fremont County, Wyoming: U.S. Geological Survey Geologic Quadrangle 724, 1 map., https://doi.org/10.3133/gq724.","productDescription":"1 map.","costCenters":[],"links":[{"id":103446,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_2032.htm","linkFileType":{"id":5,"text":"html"},"description":"2032"},{"id":247925,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gq/0724/report.pdf","size":"28","linkFileType":{"id":1,"text":"pdf"}},{"id":252350,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gq/0724/report-thumb.jpg"}],"scale":"24000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -110,43.5 ], [ -110,43.6175 ], [ -109.86749999999999,43.6175 ], [ -109.86749999999999,43.5 ], [ -110,43.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db69948e","contributors":{"authors":[{"text":"Rohrer, Willis L.","contributorId":93958,"corporation":false,"usgs":true,"family":"Rohrer","given":"Willis","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":266147,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":3952,"text":"cir592 - 1968 - Interpreting pan-concentrate analysis of stream sediments in geochemical exploration for gold","interactions":[],"lastModifiedDate":"2017-06-25T13:10:19","indexId":"cir592","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":"592","title":"Interpreting pan-concentrate analysis of stream sediments in geochemical exploration for gold","docAbstract":"A study of methods of collecting and processing samples to determine whether or not gold is present in areas of moderate size was undertaken in the northwestern part of the San Juan Mountains, Colo. As part of this study, 57 samples of pan concentrates were taken from streams draining three types of areas: (1)'barren' areas, where gold mineralization might be geologically possible but no deposits are known, (2) slightly mineralized areas that contain only a few known veins and prospects and small mines, and (3) well-mineralized areas that contain numerous veins and some very productive mines. The concentrate samples were analyzed by the fire-assay-atomic-absorption method. Replicate analyses of large samples gave results consistent enough to permit placing considerable confidence in the results obtained for smaller samples on which only one analysis was made. For general field practice, it is necessary to pan only enough sand and gravel to yield about 15 grams of concentrate. The analytical r6sults are also quantitatively compatible with known geologic relations and indicate that a few samples from a stream are adequate to distinguish between 'barren' and mineralized areas and to determine the relative amount of gold in mineralized areas. In other areas of similar gold deposits, data of this type should help decide whether more intensive search for gold deposits is justified.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/cir592","usgsCitation":"Fischer, R.P., and Fisher, F.S., 1968, Interpreting pan-concentrate analysis of stream sediments in geochemical exploration for gold: U.S. Geological Survey Circular 592, iii, 9 p. :illus., map. ;26 cm., https://doi.org/10.3133/cir592.","productDescription":"iii, 9 p. :illus., map. ;26 cm.","costCenters":[],"links":[{"id":31039,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1968/0592/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":124627,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1968/0592/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d9e4b07f02db5dfc29","contributors":{"authors":[{"text":"Fischer, Richard Philip","contributorId":94283,"corporation":false,"usgs":true,"family":"Fischer","given":"Richard","email":"","middleInitial":"Philip","affiliations":[],"preferred":false,"id":147887,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, Frederick S.","contributorId":17979,"corporation":false,"usgs":true,"family":"Fisher","given":"Frederick","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":147886,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}