{"pageNumber":"1580","pageRowStart":"39475","pageSize":"25","recordCount":40783,"records":[{"id":13459,"text":"ofr76252 - 1976 - 15/16 ips Operation of the Precision Instrument Company Model P15100 tape recorder to record the standard (30 Hz) NCER seismic data multiplex system","interactions":[],"lastModifiedDate":"2012-06-08T17:03:13","indexId":"ofr76252","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-252","title":"15/16 ips Operation of the Precision Instrument Company Model P15100 tape recorder to record the standard (30 Hz) NCER seismic data multiplex system","docAbstract":"In recent months the need has arisen to record special seismic networks consisting of a dozen or more standard NCER seismic systems telemetered to a central collection point on a reliable, portable, low-power tape recorder. Because of its simplicity and the ease with which it can be adapted for the purpose, the PI 5100 field recorder should be considered for such use. In the tests described here, a PI 5100 was speeded up to run at 15/16 inches per second (ips) and signals from the standard multiplex system test modulator bank were recorded on one tape track by means of a simple, improvised AM record amplifier. The results of these tests are extremely encouraging: the dynamic range of the system when played back on the Bell and Howell Model 3700 B reproduce machine, with subtractive compensation, is nearly as high as for the system employing the B&H 3700 B for recording. \r\n\r\nThese notes indicate the principle employed to speed up the recorder, outline the circuit required to drive the tape heads in the AM record mode, and describe the tests carried out to evaluate the system's performance.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA.","doi":"10.3133/ofr76252","usgsCitation":"Eaton, J.P., 1976, 15/16 ips Operation of the Precision Instrument Company Model P15100 tape recorder to record the standard (30 Hz) NCER seismic data multiplex system: U.S. Geological Survey Open-File Report 76-252, ii, 32 p., https://doi.org/10.3133/ofr76252.","productDescription":"ii, 32 p.","onlineOnly":"Y","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":379,"text":"Menlo Park Science Center","active":false,"usgs":true}],"links":[{"id":145444,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/OFR_76_252.gif"},{"id":257327,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1976/0252/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd490de4b0b290850eed6b","contributors":{"authors":[{"text":"Eaton, Jerry P.","contributorId":22341,"corporation":false,"usgs":true,"family":"Eaton","given":"Jerry","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":167837,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":48303,"text":"ofr76684 - 1976 - Digital-computer model of the sandstone aquifer in southeastern Wisconsin","interactions":[],"lastModifiedDate":"2014-07-15T10:30:22","indexId":"ofr76684","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-684","title":"Digital-computer model of the sandstone aquifer in southeastern Wisconsin","docAbstract":"No abstract available.","language":"English","publisher":"Southeastern Wisconsin Regional Planning Commission","publisherLocation":"Waukesha, WI","doi":"10.3133/ofr76684","usgsCitation":"Young, H.L., 1976, Digital-computer model of the sandstone aquifer in southeastern Wisconsin: U.S. Geological Survey Open-File Report 76-684, vi, 98 p., https://doi.org/10.3133/ofr76684.","productDescription":"vi, 98 p.","numberOfPages":"104","costCenters":[],"links":[{"id":171264,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64aed8","contributors":{"authors":[{"text":"Young, Harley L.","contributorId":31454,"corporation":false,"usgs":true,"family":"Young","given":"Harley","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":237148,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":10277,"text":"ofr76578 - 1976 - Documentation of programs that compute 1) static tilts for a spatially variable slip distribution, and 2) quasi-static tilts produced by an expanding dislocation loop with a spatially variable slip distribution","interactions":[],"lastModifiedDate":"2012-02-02T00:06:22","indexId":"ofr76578","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-578","title":"Documentation of programs that compute 1) static tilts for a spatially variable slip distribution, and 2) quasi-static tilts produced by an expanding dislocation loop with a spatially variable slip distribution","docAbstract":"The material in this report is concerned with the effects of a vertically oriented rectangular dislocation loop on the tilts observed at the free surface of an elastic half-space. Part I examines the effect of a spatially variable static strike-slip distribution across the slip surface. The tilt components as a function of distance parallel, or perpendicular, to the strike of the slip surface are displayed for different slip-versus-distance profiles. Part II examines the effect of spatially and temporally variable slip distributions across the dislocation loop on the quasi-static tilts at the free surface of an elastic half space. The model discussed in part II may be used to generate theoretical tilt versus time curves produced by creep events.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr76578","usgsCitation":"McHugh, S., 1976, Documentation of programs that compute 1) static tilts for a spatially variable slip distribution, and 2) quasi-static tilts produced by an expanding dislocation loop with a spatially variable slip distribution: U.S. Geological Survey Open-File Report 76-578, 1-43, 2-100 leaves :ill. ;28 cm.; (149 p. - PGS), https://doi.org/10.3133/ofr76578.","productDescription":"1-43, 2-100 leaves :ill. ;28 cm.; (149 p. - PGS)","costCenters":[],"links":[{"id":142612,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0578/report-thumb.jpg"},{"id":38133,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0578/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a61e4b07f02db636157","contributors":{"authors":[{"text":"McHugh, Stuart","contributorId":8852,"corporation":false,"usgs":true,"family":"McHugh","given":"Stuart","email":"","affiliations":[],"preferred":false,"id":161124,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":10278,"text":"ofr76750 - 1976 - Tilt changes of short duration","interactions":[],"lastModifiedDate":"2012-02-02T00:06:22","indexId":"ofr76750","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-750","title":"Tilt changes of short duration","docAbstract":"Section I of this report contains a classification scheme for short period tilt data. For convenience, all fluctuations in the local tilt field of less than 24 hours duration will be designated SP (i.e., short period) tilt events. Three basic categories of waveshape appearance are defined, and the rules for naming the waveforms are outlined. Examples from tilt observations at four central California sites are provided. \r\n\r\nSection II contains some coseismic tilt data. Fourteen earthquakes in central California, ranging in magnitude from 2.9 to 5.2, were chosen for study on four tiltmeters within 10 source dimensions of the epicenters. The raw records from each of the four tiltmeters at the times of the earthquakes were photographed and are presented in this section. \r\n\r\nSection III contains documentation of computer programs used in the analysis of the short period tilt data. Program VECTOR computes the difference vector of a tilt event and displays the sequence of events as a head-to-tail vector plot. Program ONSTSP 1) requires two component digitized tilt data as input, 2) scales and plots the data, and 3) computes and displays the amplitude, azimuth, and normalized derivative of the tilt amplitude. Program SHARPS computes the onset sharpness, (i.e., the normalized derivative of the tilt amplitude at the onset of the tilt event) as a function of source-station distance from a model of creep-related tilt changes. Program DSPLAY plots the digitized data.","language":"ENGLISH","publisher":"U.S. Geological Survey, National Center for Earthquake Research,","doi":"10.3133/ofr76750","usgsCitation":"McHugh, S., 1976, Tilt changes of short duration: U.S. Geological Survey Open-File Report 76-750, 210 leaves in various pagings :ill. ;29 cm., https://doi.org/10.3133/ofr76750.","productDescription":"210 leaves in various pagings :ill. ;29 cm.","costCenters":[],"links":[{"id":142613,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0750/report-thumb.jpg"},{"id":38134,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0750/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db699dd5","contributors":{"authors":[{"text":"McHugh, Stuart","contributorId":8852,"corporation":false,"usgs":true,"family":"McHugh","given":"Stuart","email":"","affiliations":[],"preferred":false,"id":161125,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":10522,"text":"ofr7621 - 1976 - Determining availability of LANDSAT imagery at the EROS Data Center: a slide-cassette training module","interactions":[],"lastModifiedDate":"2017-03-28T13:21:04","indexId":"ofr7621","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-21","title":"Determining availability of LANDSAT imagery at the EROS Data Center: a slide-cassette training module","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr7621","usgsCitation":"Nickerson, J.A., 1976, Determining availability of LANDSAT imagery at the EROS Data Center: a slide-cassette training module ([Rev. ed.].): U.S. Geological Survey Open-File Report 76-21, [3], 15, [29] leaves ;27 cm, & 90-minute cassette tape & slides (77 col. slides ; 2 x 2 in. in carousel); (41 p. - PGS), https://doi.org/10.3133/ofr7621.","productDescription":"[3], 15, [29] leaves ;27 cm, & 90-minute cassette tape & slides (77 col. slides ; 2 x 2 in. in carousel); (41 p. - PGS)","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":144249,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"edition":"[Rev. ed.].","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db66744b","contributors":{"authors":[{"text":"Nickerson, James A.","contributorId":25948,"corporation":false,"usgs":true,"family":"Nickerson","given":"James","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":161537,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":6147,"text":"pp574G - 1976 - Q-mode factor analysis of geochemical and petrologic data matrices with constant row-sums","interactions":[],"lastModifiedDate":"2012-02-02T00:05:55","indexId":"pp574G","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"574","chapter":"G","title":"Q-mode factor analysis of geochemical and petrologic data matrices with constant row-sums","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Statistical studies in field geochemistry","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","publisher":"U.S. Govt. Print. Off.,","doi":"10.3133/pp574G","usgsCitation":"Miesch, A., 1976, Q-mode factor analysis of geochemical and petrologic data matrices with constant row-sums: U.S. Geological Survey Professional Paper 574, 46 p., https://doi.org/10.3133/pp574G.","productDescription":"46 p.","costCenters":[],"links":[{"id":117848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/0574g/report-thumb.jpg"},{"id":33220,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/0574g/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4adee4b07f02db68746a","contributors":{"authors":[{"text":"Miesch, A.T.","contributorId":88726,"corporation":false,"usgs":true,"family":"Miesch","given":"A.T.","affiliations":[],"preferred":false,"id":152194,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":15750,"text":"ofr76373 - 1976 - Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska","interactions":[],"lastModifiedDate":"2024-01-24T20:27:37.655864","indexId":"ofr76373","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-373","title":"Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska","docAbstract":"<p>Bottom sediments of four lakes in South-Central Alaska were studied in the summer of 1975 for evidence of earthquake-induced deformation. The lakes are: Summit, Upper Trail, and Skilak, all on the Kenai Peninsula, and Eklutna, northeast of Anchorage (fig. 1). Interest in these lakes was stimulated by hypotheses developed from a study of sediments in Van Norman Reservoir, California, after the 1971 San Fernando earthquake (Sims, 1973). During that study three zones of deformational structures were found and correlated with moderate earthquakes that shook the San Fernando area in 1930, 1952, and 1971. Results of that study, coupled with the experimental formation of deformational structures similar to those from Van Norman Reservoir, led to a search for similar structures in Pleistocene and Holocene lakes and lake sediments in other seismically active areas. The lakes for this study were chosen specifically because of their location within the area affected by the 1964 Prince William Sound earthquake, and the probability of obtaining varved sediments which would allow counting of years between sedimentologic events.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr76373","usgsCitation":"Rymer, M.J., and Sims, J.D., 1976, Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska: U.S. Geological Survey Open-File Report 76-373, 20 p., https://doi.org/10.3133/ofr76373.","productDescription":"20 p.","costCenters":[],"links":[{"id":424897,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0373/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":148680,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0373/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"south-central Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -152.43345988424275,\n              61.66721907817728\n            ],\n            [\n              -152.43345988424275,\n              59.12721201961355\n            ],\n            [\n              -147.898929065904,\n              59.12721201961355\n            ],\n            [\n              -147.898929065904,\n              61.66721907817728\n            ],\n            [\n              -152.43345988424275,\n              61.66721907817728\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aabe4b07f02db669957","contributors":{"authors":[{"text":"Rymer, Michael J. mrymer@usgs.gov","contributorId":1522,"corporation":false,"usgs":true,"family":"Rymer","given":"Michael","email":"mrymer@usgs.gov","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":171641,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sims, John D.","contributorId":60202,"corporation":false,"usgs":true,"family":"Sims","given":"John","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":171642,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":15258,"text":"ofr76222 - 1976 - Uranium in the Cochetopa District, Colorado, in relation to the Oligocene erosion surface","interactions":[],"lastModifiedDate":"2012-02-02T00:06:54","indexId":"ofr76222","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-222","title":"Uranium in the Cochetopa District, Colorado, in relation to the Oligocene erosion surface","docAbstract":"In the Cochetopa district, Colorado, the sequence of Mesozoic and Cenozoic events is as follows: development of a relatively smooth, planar erosion surface in Jurassic time; deposition, on this surface, of the Junction Creek Sandstone and Morrison Formation of Jurassic age, followed by deposition of the Dakota Sandstone and Mancos Shale of Cretaceous age; Laramide tilting and faulting; erosion to form a terrane of moderate relief in Oligocene time; deposition of lava flows and volcanic breccia of intermediate composition and of ash-flow tuff, all of Oligocene age; and subsequent erosion and canyon-cutting by Cochetopa Creek, a superimposed stream, and its tributaries.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr76222","usgsCitation":"Olson, J.C., 1976, Uranium in the Cochetopa District, Colorado, in relation to the Oligocene erosion surface: U.S. Geological Survey Open-File Report 76-222, 13 leaves :ill., maps ;27 cm., https://doi.org/10.3133/ofr76222.","productDescription":"13 leaves :ill., maps ;27 cm.","costCenters":[],"links":[{"id":146723,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0222/report-thumb.jpg"},{"id":44194,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0222/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db605501","contributors":{"authors":[{"text":"Olson, Jerry Chipman","contributorId":57869,"corporation":false,"usgs":true,"family":"Olson","given":"Jerry","email":"","middleInitial":"Chipman","affiliations":[],"preferred":false,"id":170834,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":4199,"text":"cir737 - 1976 - Status of ground-water modeling in the U.S. Geological Survey","interactions":[],"lastModifiedDate":"2012-02-02T00:05:37","indexId":"cir737","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"737","title":"Status of ground-water modeling in the U.S. Geological Survey","docAbstract":"The U.S. Geological Survey is active in the development and use of models for the analysis of various types of ground-water problems. Types of problems for which models have been, or are being, developed include: (1) ground-water flow in saturated or partially unsaturated materials, (2) land subsidence resulting from ground-water extraction, (3) flow in coupled ground water-stream systems, (4) coupling of rainfall-runoff basin models with soil moisture accounting and aquifer flow models, (5) interaction of economic and hydrologic considerations, (6) predicting the transport of contaminants in an aquifer, and (7) estimating the effects of proposed development schemes for geothermal systems. The status of modeling activity for various models is reported as being in a developmental, verification, operational, or continued improvement phase. Recently published references that provide useful details on the characteristics of the models are identified. (Woodard-USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/cir737","usgsCitation":"Appel, C.A., and Bredehoeft, J., 1976, Status of ground-water modeling in the U.S. Geological Survey: U.S. Geological Survey Circular 737, iii, 9 p. ;26 cm. , https://doi.org/10.3133/cir737.","productDescription":"iii, 9 p. ;26 cm. ","costCenters":[],"links":[{"id":123802,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1976/0737/report-thumb.jpg"},{"id":31313,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1976/0737/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d8e4b07f02db5df2b1","contributors":{"authors":[{"text":"Appel, Charles A.","contributorId":14376,"corporation":false,"usgs":true,"family":"Appel","given":"Charles","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":148392,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bredehoeft, J.D.","contributorId":12836,"corporation":false,"usgs":true,"family":"Bredehoeft","given":"J.D.","affiliations":[],"preferred":false,"id":148391,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":12390,"text":"ofr76216 - 1976 - CABFAC/USGS, a FORTRAN program for Q-mode factor analysis of stratigraphically ordered samples","interactions":[],"lastModifiedDate":"2012-02-02T00:06:27","indexId":"ofr76216","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-216","title":"CABFAC/USGS, a FORTRAN program for Q-mode factor analysis of stratigraphically ordered samples","docAbstract":"This program is a revision of the CABFAC program of Kovan and Imbrie (1971) which incorporates the following improvements: each factor is plotted against depth on the printer; samples are ordered stratigraphically by the program, so that input data need not be ordered stratigraphically; an option has been added to transform all variables to zero means before calculating the cosine-theta matrix; and all subroutines are variable-dimensioned, so that the size of .the program may be changed by simply altering the main program.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr76216","usgsCitation":"Adams, D.P., 1976, CABFAC/USGS, a FORTRAN program for Q-mode factor analysis of stratigraphically ordered samples: U.S. Geological Survey Open-File Report 76-216, 28 leaves ;28 cm., https://doi.org/10.3133/ofr76216.","productDescription":"28 leaves ;28 cm.","costCenters":[],"links":[{"id":143301,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0216/report-thumb.jpg"},{"id":40625,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0216/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a07e4b07f02db5f98a3","contributors":{"authors":[{"text":"Adams, David P. 0000-0003-2679-2344 dladams@usgs.gov","orcid":"https://orcid.org/0000-0003-2679-2344","contributorId":100395,"corporation":false,"usgs":true,"family":"Adams","given":"David","email":"dladams@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":false,"id":166054,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":49297,"text":"ofr76795 - 1976 - Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers","interactions":[{"subject":{"id":49297,"text":"ofr76795 - 1976 - Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers","indexId":"ofr76795","publicationYear":"1976","noYear":false,"title":"Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers"},"predicate":"SUPERSEDED_BY","object":{"id":70046170,"text":"70046170 - 1977 - Combined use of digital aquifer models and field base-flow data to identify recharge-leakage areas of artesian aquifers","indexId":"70046170","publicationYear":"1977","noYear":false,"title":"Combined use of digital aquifer models and field base-flow data to identify recharge-leakage areas of artesian aquifers"},"id":1}],"supersededBy":{"id":70046170,"text":"70046170 - 1977 - Combined use of digital aquifer models and field base-flow data to identify recharge-leakage areas of artesian aquifers","indexId":"70046170","publicationYear":"1977","noYear":false,"title":"Combined use of digital aquifer models and field base-flow data to identify recharge-leakage areas of artesian aquifers"},"lastModifiedDate":"2013-05-29T13:27:51","indexId":"ofr76795","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-795","title":"Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers","language":"ENGLISH","doi":"10.3133/ofr76795","usgsCitation":"Johnston, R., and Leahy, P., 1976, Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers: U.S. Geological Survey Open-File Report 76-795, 28 p., illus., https://doi.org/10.3133/ofr76795.","productDescription":"28 p., illus.","costCenters":[],"links":[{"id":175406,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae70f","contributors":{"authors":[{"text":"Johnston, R.H.","contributorId":19536,"corporation":false,"usgs":true,"family":"Johnston","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":239456,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Leahy, P.P.","contributorId":104896,"corporation":false,"usgs":true,"family":"Leahy","given":"P.P.","email":"","affiliations":[],"preferred":false,"id":239457,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":28394,"text":"wri768 - 1976 - Digital model to predict effects of pumping from the Arikaree aquifer in the Dwyer area, southeastern Wyoming","interactions":[],"lastModifiedDate":"2012-02-02T00:08:49","indexId":"wri768","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"76-8","title":"Digital model to predict effects of pumping from the Arikaree aquifer in the Dwyer area, southeastern Wyoming","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/wri768","usgsCitation":"Lines, G.C., 1976, Digital model to predict effects of pumping from the Arikaree aquifer in the Dwyer area, southeastern Wyoming: U.S. Geological Survey Water-Resources Investigations Report 76-8, iv, 24 p. :ill., maps (some fold. in pocket) ;26 cm. --, https://doi.org/10.3133/wri768.","productDescription":"iv, 24 p. :ill., maps (some fold. in pocket) ;26 cm. --","costCenters":[],"links":[{"id":118921,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1976/0008/report-thumb.jpg"},{"id":57193,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57194,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57195,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57196,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57197,"rank":404,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57198,"rank":405,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-6.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57199,"rank":406,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1976/0008/plate-7.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57200,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1976/0008/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65a9b2","contributors":{"authors":[{"text":"Lines, G. C.","contributorId":30577,"corporation":false,"usgs":true,"family":"Lines","given":"G.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":199723,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":20075,"text":"ofr76484 - 1976 - Documentation of programs that compute 1) quasi-static tilts produced by an expanding dislocation loop in an elastic and viscoelastic material, and 2) surface shear stresses, strains, and shear displacements produced by screw dislocations in a vertical slab with modulus contrast","interactions":[],"lastModifiedDate":"2012-02-02T00:07:44","indexId":"ofr76484","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-484","title":"Documentation of programs that compute 1) quasi-static tilts produced by an expanding dislocation loop in an elastic and viscoelastic material, and 2) surface shear stresses, strains, and shear displacements produced by screw dislocations in a vertical slab with modulus contrast","docAbstract":"The material in this report can be grouped into two categories: 1) programs that compute tilts produced by a vertically oriented expanding rectangular dislocation loop in an elastic or viscoelastic material and 2) programs that compute the shear stresses, strains, and shear displacements in a three-phase half-space (i.e. a half-space containing a vertical slab). Each section describes the relevant theory, and provides a detailed guide to the operation of the programs. A series of examples is provided at the end of each section.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr76484","usgsCitation":"McHugh, S., 1976, Documentation of programs that compute 1) quasi-static tilts produced by an expanding dislocation loop in an elastic and viscoelastic material, and 2) surface shear stresses, strains, and shear displacements produced by screw dislocations in a vertical slab with modulus contrast: U.S. Geological Survey Open-File Report 76-484, 1 v. (various pagings) :ill. ;28 cm.; (227 p. - PGS), https://doi.org/10.3133/ofr76484.","productDescription":"1 v. (various pagings) :ill. ;28 cm.; (227 p. - PGS)","costCenters":[],"links":[{"id":153122,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0484/report-thumb.jpg"},{"id":49629,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0484/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a61e4b07f02db63618f","contributors":{"authors":[{"text":"McHugh, Stuart","contributorId":8852,"corporation":false,"usgs":true,"family":"McHugh","given":"Stuart","email":"","affiliations":[],"preferred":false,"id":182017,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":4724,"text":"twri07C1 - 1976 - Finite difference model for aquifer simulation in two dimensions with results of numerical experiments","interactions":[{"subject":{"id":56027,"text":"ofr70211 - 1970 - A program to simulate and aquifer using alternating direction implicit-iterative procedure","indexId":"ofr70211","publicationYear":"1970","noYear":false,"title":"A program to simulate and aquifer using alternating direction implicit-iterative procedure"},"predicate":"SUPERSEDED_BY","object":{"id":4724,"text":"twri07C1 - 1976 - Finite difference model for aquifer simulation in two dimensions with results of numerical experiments","indexId":"twri07C1","publicationYear":"1976","noYear":false,"title":"Finite difference model for aquifer simulation in two dimensions with results of numerical experiments"},"id":1}],"lastModifiedDate":"2021-04-05T15:32:12.694992","indexId":"twri07C1","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":336,"text":"Techniques of Water-Resources Investigations","code":"TWRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"07-C1","title":"Finite difference model for aquifer simulation in two dimensions with results of numerical experiments","docAbstract":"<p>The model will simulate ground-water flow in an artesian aquifer, a water-table aquifer, or a combined artesian and water-table aquifer. The aquifer may be heterogeneous and anisotropic and have irregular boundaries. The source term in the flow equation may include well discharge, constant recharge, leakage from confining beds in which the effects of storage are considered, and evapotranspiration as a linear function of depth to water. </p><p>The theoretical development includes presentation of the appropriate flow equations and derivation of the finite-difference approximations (written for a variable grid). The documentation emphasizes the numerical techniques that can be used for solving the simultaneous equations and describes the results of numerical experiments using these techniques. Of the three numerical techniques available in the model, the strongly implicit procedure, in general, requires less computer time and has fewer numerical difficulties than do the iterative alternating direction implicit procedure and line successive overrelaxation (which includes a two-dimensional correction procedure to accelerate convergence). </p><p>The documentation includes a flow chart, program listing, an example simulation, and sections on designing an aquifer model and requirements for data input. It illustrates how model results can be presented on the line printer and pen plotters with a program that utilizes the graphical display software available from the Geological Survey Computer Center Division. In addition the model includes options for reading input data from a disk and writing intermediate results on a disk.</p>","language":"English","publisher":"U.S. Government Printing Office","publisherLocation":"Washington, D.C.","doi":"10.3133/twri07C1","issn":"0565-596X","usgsCitation":"Trescott, P.C., Pinder, G.F., and Larson, S.P., 1976, Finite difference model for aquifer simulation in two dimensions with results of numerical experiments (Revision -1976): U.S. Geological Survey Techniques of Water-Resources Investigations 07-C1, vi, 116 p., https://doi.org/10.3133/twri07C1.","productDescription":"vi, 116 p.","costCenters":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"links":[{"id":384872,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/twri/twri7-c1/html/pdf/TWRI_7-C1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":139097,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":352,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/twri/twri7-c1/","linkFileType":{"id":5,"text":"html"}}],"edition":"Revision -1976","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fbe4b07f02db5f46b3","contributors":{"authors":[{"text":"Trescott, Peter C.","contributorId":21533,"corporation":false,"usgs":true,"family":"Trescott","given":"Peter","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":149685,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pinder, George Francis","contributorId":99964,"corporation":false,"usgs":true,"family":"Pinder","given":"George","email":"","middleInitial":"Francis","affiliations":[],"preferred":false,"id":149687,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Larson, S. P.","contributorId":34903,"corporation":false,"usgs":true,"family":"Larson","given":"S.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":149686,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":8991,"text":"ofr76613 - 1976 - Guide to your first use of the Image 100, a slide-cassette training module","interactions":[],"lastModifiedDate":"2017-03-28T11:49:23","indexId":"ofr76613","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"76-613","title":"Guide to your first use of the Image 100, a slide-cassette training module","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr76613","usgsCitation":"Gehring, D.G., 1976, Guide to your first use of the Image 100, a slide-cassette training module: U.S. Geological Survey Open-File Report 76-613, [16] leaves ;27 cm. & cassette & slides (53 slides: col. ; 2 x 2 in.) in carousel; (56  color slides and audio cassette recording - PGS), https://doi.org/10.3133/ofr76613.","productDescription":"[16] leaves ;27 cm. & cassette & slides (53 slides: col. ; 2 x 2 in.) in carousel; (56  color slides and audio cassette recording - PGS)","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":144279,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64af6b","contributors":{"authors":[{"text":"Gehring, Dale G.","contributorId":51750,"corporation":false,"usgs":true,"family":"Gehring","given":"Dale","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":158676,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":14782,"text":"ofr75642 - 1976 - Programmable calculators; modern instruments for analyzing hydrologic data","interactions":[],"lastModifiedDate":"2012-02-02T00:06:59","indexId":"ofr75642","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","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":"75-642","title":"Programmable calculators; modern instruments for analyzing hydrologic data","language":"ENGLISH","publisher":"United States Department of the Interior, Geological Survey,","doi":"10.3133/ofr75642","usgsCitation":"Maddy, D.V., 1976, Programmable calculators; modern instruments for analyzing hydrologic data: U.S. Geological Survey Open-File Report 75-642, 24 p. :ill. ;27 cm.; (28 p. - PGS), https://doi.org/10.3133/ofr75642.","productDescription":"24 p. :ill. ;27 cm.; (28 p. - PGS)","costCenters":[],"links":[{"id":148131,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db688983","contributors":{"authors":[{"text":"Maddy, David V.","contributorId":87559,"corporation":false,"usgs":true,"family":"Maddy","given":"David","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":169996,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70207189,"text":"70207189 - 1976 - Preseismic and coseismic deformation associated with the Hollister, California, earthquake of November 28, 1974","interactions":[],"lastModifiedDate":"2020-06-01T12:48:24.812536","indexId":"70207189","displayToPublicDate":"1976-12-11T13:37:35","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Preseismic and coseismic deformation associated with the Hollister, California, earthquake of November 28, 1974","docAbstract":"<p><span>The epicenter of the Hollister earthquake (</span><i>M<sub>L</sub></i><span>&nbsp;= 5.1) of November 28, 1974, is located near the center of an 81‐line trilateration network which has been surveyed annually since 1971. Five lines in the neighborhood of the epicenter were surveyed just 2 days before the earthquake, and two other lines nearby were surveyed 48 days earlier. Although some of these measurements suggest a possible preearthquake anomaly in line length, the anomaly is within the uncertainty in measurement. A comparison of the most recent preearthquake survey (June 1974) and the most immediate postearthquake survey (December 1974 to January 1975) of the entire network indicates a uniform linear contraction of about 0.8 ppm. This is most reasonably attributed to survey error even though a systematic error of that magnitude is unexpected. We conclude that no demonstrable preseismic or coseismic deformation was detected and suggest that an upper limit for these phenomena is less than 1 ppm in line length. A reasonable dislocation model for the Hollister earthquake yields coseismic changes in line length not greater than a few parts in 10</span><sup>7</sup><span>, well below the limit of detection in Geodolite surveys.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB081i020p03567","usgsCitation":"Savage, J.C., Spieth, M.A., and Prescott, W., 1976, Preseismic and coseismic deformation associated with the Hollister, California, earthquake of November 28, 1974: Journal of Geophysical Research, v. 81, no. 20, p. 3567-3574, https://doi.org/10.1029/JB081i020p03567.","productDescription":"8 p.","startPage":"3567","endPage":"3574","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":370170,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Hollister","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.6845703125,\n              36.65079252503471\n            ],\n            [\n              -121.09130859375,\n              36.65079252503471\n            ],\n            [\n              -121.09130859375,\n              37.142803443716836\n            ],\n            [\n              -121.6845703125,\n              37.142803443716836\n            ],\n            [\n              -121.6845703125,\n              36.65079252503471\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"20","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":777207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Spieth, Mary Ann","contributorId":38990,"corporation":false,"usgs":true,"family":"Spieth","given":"Mary","email":"","middleInitial":"Ann","affiliations":[],"preferred":false,"id":777208,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Prescott, W.H.","contributorId":96337,"corporation":false,"usgs":true,"family":"Prescott","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":777209,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70207186,"text":"70207186 - 1976 - Strain accumulation on the San Andreas Fault near Palmdale, California","interactions":[],"lastModifiedDate":"2020-06-01T12:46:50.176542","indexId":"70207186","displayToPublicDate":"1976-12-11T13:26:47","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Strain accumulation on the San Andreas Fault near Palmdale, California","docAbstract":"<p><span>Precise distance measurements of a 10×25 km 15‐station trilateration network that spans the San Andreas fault west of Palmdale, California, have been repeated annually in the period 1971–1975. The network appears to be deforming under simple uniform tensor shear of about 0.21±0.03 μstrain/yr with the direction of maximum right‐lateral shear parallel to the local strike of the San Andreas fault. Comparison of trilateration with triangulation surveys of the same network shows that the rate of strain accumulation has been constant over the past 40 yr. The strain accumulation can be explained by conventional dislocation models (i.e., slip at depth beneath a locked section) of the San Andreas fault with 30‐ to 50‐mm/yr slip. Leveling surveys along a 16‐km line that crosses the fault at Palmdale indicate significant changes in tilt but with frequent reversals, so that no net tilt has accumulated in the overall period 1935–1975.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB081i026p04901","usgsCitation":"Prescott, W., and Savage, J.C., 1976, Strain accumulation on the San Andreas Fault near Palmdale, California: Journal of Geophysical Research B: Solid Earth, v. 81, no. 26, p. 4901-4908, https://doi.org/10.1029/JB081i026p04901.","productDescription":"8 p.","startPage":"4901","endPage":"4908","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":370165,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.9375,\n              32.30570601389429\n            ],\n            [\n              -115.07080078125,\n              32.30570601389429\n            ],\n            [\n              -115.07080078125,\n              35.40696093270201\n            ],\n            [\n              -120.9375,\n              35.40696093270201\n            ],\n            [\n              -120.9375,\n              32.30570601389429\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"26","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Prescott, W.H.","contributorId":96337,"corporation":false,"usgs":true,"family":"Prescott","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":777205,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":777206,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010182,"text":"70010182 - 1976 - Numerical models of wind-driven circulation in lakes","interactions":[],"lastModifiedDate":"2023-02-28T17:00:13.027696","indexId":"70010182","displayToPublicDate":"1976-12-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":840,"text":"Applied Mathematical Modelling","active":true,"publicationSubtype":{"id":10}},"title":"Numerical models of wind-driven circulation in lakes","docAbstract":"<p><span>The state-of-the-art of numerical modelling of large-scale wind-driven circulation in lakes is presented. The governing equations which describe this motion are discussed along with the appropriate numerical techniques necessary to solve them in lakes. The numerical models are categorized into three large primary groups: the layered models, the Ekman-type models, and the other three-dimensional models. Discussions and comparison of models are given and future research directions are suggested.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0307-904X(76)90035-4","usgsCitation":"Cheng, R.T., Powell, T.M., and Dillon, T.M., 1976, Numerical models of wind-driven circulation in lakes: Applied Mathematical Modelling, v. 1, no. 3, p. 141-159, https://doi.org/10.1016/0307-904X(76)90035-4.","productDescription":"19 p.","startPage":"141","endPage":"159","numberOfPages":"19","costCenters":[],"links":[{"id":489736,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/0307-904x(76)90035-4","text":"Publisher Index Page"},{"id":218633,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6904e4b0c8380cd73b0f","contributors":{"authors":[{"text":"Cheng, Ralph T.","contributorId":69134,"corporation":false,"usgs":true,"family":"Cheng","given":"Ralph","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":358224,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, Thomas M.","contributorId":173317,"corporation":false,"usgs":false,"family":"Powell","given":"Thomas","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":358226,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dillon, T. M.","contributorId":30513,"corporation":false,"usgs":false,"family":"Dillon","given":"T.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":358225,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011158,"text":"70011158 - 1976 - Episodic strain accumulation in Southern California","interactions":[],"lastModifiedDate":"2026-01-16T16:49:39.723261","indexId":"70011158","displayToPublicDate":"1976-11-12T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Episodic strain accumulation in Southern California","docAbstract":"<p><span>Reexamination of horizontal geodetic data in the region of recently discovered aseismic uplift has demonstrated that equally unusual horizontal crustal deformation accompanied the development of the uplift. During this time interval compressive strains were oriented roughly normal to the San Andreas fault, suggesting that the uplift produced little shear strain accumulation across this fault. On the other hand, the orientation of the anomalous shear straining is consistent with strain accumulation across northdipping range-front thrusts like the San Fernando fault. Accordingly, the horizontal and vertical crustal deformation disclosed by geodetic observation is interpreted as a short epoch of rapid strain accumulation on these frontal faults. If this interpretation is correct, thrust-type earthquakes will eventually release the accumulated strains, but the geodetic data examined here cannot be used to estimate when these events might occur. However, observation of an unusual sequence of tilts prior to 1971 on a level line lying to the north of the magnitude 6.4 San Fernando earthquake offers some promise for precursor monitoring. The data are adequately explained by a simple model of up-dip aseismic slip propagation toward the 1971 epicentral region. These observations and the simple model that accounts for them suggest a conceptually straightforward monitoring scheme to search for similar uplift and tilt precursors within the uplifted region. Such premonitory effects could be detected by a combination of frequently repeated short (30 to 70 km in length) level line measurements, precise gravity traverses, and continuously recording gravimeters sited to the north of the active frontal thrust faults. Once identified, such precursors could be closely followed in space and time, and might then provide effective warnings of impending potentially destructive earthquakes.</span></p>","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.194.4266.691","issn":"00368075","usgsCitation":"Thatcher, W., 1976, Episodic strain accumulation in Southern California: Science, v. 194, no. 4266, p. 691-695, https://doi.org/10.1126/science.194.4266.691.","productDescription":"5 p.","startPage":"691","endPage":"695","costCenters":[],"links":[{"id":221024,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Southern California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -121.9804029819224,\n              36.30513645238112\n            ],\n            [\n              -120.96601429202806,\n              34.360346703747\n            ],\n            [\n              -119.17331019306403,\n              32.27556539094205\n            ],\n            [\n              -114.34970515576546,\n              32.86548144988561\n            ],\n            [\n              -114.08039140095518,\n              34.30260170922787\n            ],\n            [\n              -114.596289953596,\n              34.95052476022777\n            ],\n            [\n              -117.75432473596952,\n              37.47447472393604\n            ],\n            [\n              -121.9804029819224,\n              36.30513645238112\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"194","issue":"4266","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0a15e4b0c8380cd521c3","contributors":{"authors":[{"text":"Thatcher, W.","contributorId":32669,"corporation":false,"usgs":true,"family":"Thatcher","given":"W.","email":"","affiliations":[],"preferred":false,"id":360421,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70233430,"text":"70233430 - 1976 - Metagraywacke in the Salinian Block, central Coast Ranges, California: And a possible correlative across the San Andreas Fault","interactions":[],"lastModifiedDate":"2022-07-20T16:20:58.658521","indexId":"70233430","displayToPublicDate":"1976-11-01T11:14:47","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Metagraywacke in the Salinian Block, central Coast Ranges, California: And a possible correlative across the San Andreas Fault","docAbstract":"<p>The schist of Sierra de Salinas is a monotonously homogeneous biotite quartzofeldspathic schist with minor amounts of quartzite, amphibolite, and marble that forms a northwest-trending outcrop belt that strikes across parts of the Santa Lucia and Gabilan Ranges and is traceable further south in the subsurface to where it is presumably cut off by the San Andreas fault zone. Chemical composition of the schist is similar to that of \"average\" graywackes. This large and monotonous terrane of metagraywacke is anomalous in the Salinian block, where a great variety of metamorphic rocks is the general rule. The age of the schist is not known, but it has been intruded by granitic rocks of presumably mid-Cretaceous age. Although it contains somewhat greater amounts of admixed quartzite, amphibolite, and marble, the schist of Portal-Bitter Ridge (Pelona Schist?), on the east side of the San Andreas fault and west of Palmdale, is nevertheless modally and chemically similar to the schist (metagraywacke) of Sierra de Salinas, and I suggest that the two terranes are correlative and once were contiguous.</p>","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Ross, D.C., 1976, Metagraywacke in the Salinian Block, central Coast Ranges, California: And a possible correlative across the San Andreas Fault: Journal of Research of the U.S. Geological Survey, v. 4, no. 6, p. 683-696.","productDescription":"14 p.","startPage":"683","endPage":"696","costCenters":[],"links":[{"id":404128,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":404127,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1976/vol4issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"central Coast Ranges","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122,\n              36.45\n            ],\n            [\n              -120.75,\n              36.45\n            ],\n            [\n              -120.75,\n              36\n            ],\n            [\n              -122,\n              36\n            ],\n            [\n              -122,\n              36.45\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ross, Donald C.","contributorId":146987,"corporation":false,"usgs":true,"family":"Ross","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":847087,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70233429,"text":"70233429 - 1976 - Gravity studies in the Carolina slate belt near the Haile and Brewer mines, north-central South Carolina","interactions":[],"lastModifiedDate":"2022-07-20T16:06:24.710073","indexId":"70233429","displayToPublicDate":"1976-11-01T10:57:36","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Gravity studies in the Carolina slate belt near the Haile and Brewer mines, north-central South Carolina","docAbstract":"<p>The Bouguer gravity map of part of the Carolina slate belt near the Haile and Brewer mines in South Carolina shows anomalies related to rock units. The most conspicuous of the anomalies coincide with coarse-grained granitic plutons. Mathematically calculated models using an iterative three-dimensional solution of the gravity anomalies show that these plutons are steep-sided intrusive bodies that constrict at depth to small pipes or roots. The plutons are emplaced in and are probably largely confined to a unit of volcaniclastic rocks. The volcaniclastic rocks are probably 6,000 m to 10,000 m thick and similar in composition to those exposed in the vicinity of the plutons.</p>","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Bell, H., and Popenoe, P., 1976, Gravity studies in the Carolina slate belt near the Haile and Brewer mines, north-central South Carolina: Journal of Research of the U.S. Geological Survey, v. 4, no. 6, p. 667-682.","productDescription":"16 p.","startPage":"667","endPage":"682","costCenters":[],"links":[{"id":404126,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":404125,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1976/vol4issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"South Carolina","otherGeospatial":"Haile and Brewer mines","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -80.75,\n              34.75\n            ],\n            [\n              -81.25,\n              34.75\n            ],\n            [\n              -81.25,\n              35\n            ],\n            [\n              -80.75,\n              35\n            ],\n            [\n              -80.75,\n              34.75\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bell, Henry III","contributorId":37710,"corporation":false,"usgs":true,"family":"Bell","given":"Henry","suffix":"III","email":"","affiliations":[],"preferred":false,"id":847085,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Popenoe, Peter","contributorId":104078,"corporation":false,"usgs":true,"family":"Popenoe","given":"Peter","affiliations":[],"preferred":false,"id":847086,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70233427,"text":"70233427 - 1976 - Geothermal flux through palagonitized tephra, Surtsey, Iceland: The Surtsey temperature-data-relay experiment via Landsat-1","interactions":[],"lastModifiedDate":"2022-07-20T15:42:42.446929","indexId":"70233427","displayToPublicDate":"1976-11-01T10:34:11","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Geothermal flux through palagonitized tephra, Surtsey, Iceland: The Surtsey temperature-data-relay experiment via Landsat-1","docAbstract":"<p>The net geothermal flux through palagonitized basaltic tephra rims of the Surtur I and Surtur II craters at Surtsey, Iceland, in 1972, is estimated at 780 ±325 <i><span>μ</span></i>cal cm<sup>-2</sup>s<sup>-1</sup>, indicating a decline since 1969 when a flux of 1,500 <i><span>μ</span></i>cal cm<sup>-2</sup>s<sup>-1</sup> was estimated. Heat flux in this range characterizes the postvolcanic environment on Surtsey in which the subaerial palagonitization of basaltic tephra is associated with mass transfer of hydrothermal vapor, either of meteoric or sea-water origin, only a few years after cessation of eruptive activity. The flux estimation is the result of the Surtsey data-relay experiment via Landsat-1 which was carried. out in several phases. Successful field installation and test transmissions demonstrated the feasibility of repetitive long-distance (that is, 4,800-km) data transmission and reception from a volcanic environment in Iceland via the Landsat Data Collection System. Temperature data were transmitted for a 38-day period in November and December 1972. A near-surface vertical gradient of 69.4 °C/m was obtained, suggesting a mixed mechanism of heat transfer, partitioned between conduction and convection. Comparison of four methods for estimating fluxes between 500 and 1,500 <i><span>μ</span></i>cal cm<sup>-2</sup>s<sup>-1</sup>, using temperature data derived from the Data Collection Platform, suggests that, where the only temperature available are from the surface and a depth of 1 m, methods of estimating the net geothermal flux from examination of spectral radiance are superior to methods that assume dominant convection or conduction. A computerized thermal-modeling technique to construct parametric diurnal surface-temperature curves is particularly applicable. Flux-estimation methods that assume dominant convection or conduction are limited by the lack of temperature data at greater depths and lack of knowledge of the exact energy partition.</p>","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Friedman, J., Preble, D.M., and Jakobsson, S.P., 1976, Geothermal flux through palagonitized tephra, Surtsey, Iceland: The Surtsey temperature-data-relay experiment via Landsat-1: Journal of Research of the U.S. Geological Survey, v. 4, no. 6, p. 645-659.","productDescription":"15 p.","startPage":"645","endPage":"659","costCenters":[],"links":[{"id":404122,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":404121,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1976/vol4issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"Iceland","otherGeospatial":"Surtsey","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -20.622711181640625,\n              63.295099351960246\n            ],\n            [\n              -20.58614730834961,\n              63.295099351960246\n            ],\n            [\n              -20.58614730834961,\n              63.313685020999294\n            ],\n            [\n              -20.622711181640625,\n              63.313685020999294\n            ],\n            [\n              -20.622711181640625,\n              63.295099351960246\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Friedman, Jules D.","contributorId":76757,"corporation":false,"usgs":true,"family":"Friedman","given":"Jules D.","affiliations":[],"preferred":false,"id":847081,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Preble, Duane M.","contributorId":36560,"corporation":false,"usgs":true,"family":"Preble","given":"Duane","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":847082,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jakobsson, Sveinn P.","contributorId":40121,"corporation":false,"usgs":true,"family":"Jakobsson","given":"Sveinn","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":847083,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70156660,"text":"70156660 - 1976 - Pre-Eocene rocks of Java, Indonesia","interactions":[],"lastModifiedDate":"2015-08-25T14:55:52","indexId":"70156660","displayToPublicDate":"1976-10-26T17:15:00","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Pre-Eocene rocks of Java, Indonesia","docAbstract":"<p>The exposed pre-Eocene rocks of Java can be divided into two compound units for purposes of reconnaissance mapping and structural interpretation: a sedimentary sequence and melange. The sedimentary sequence consists of moderately deformed and little-metamorphosed conglomerate, sandstone, mudstone, claystone, chert, and limestone. The melange consists of a chaotic mechanical mixture of rocks identical to those of the sedimentary sequence and their metamorphic equivalents, such as schist, phyllite, quartzite, and marble. In addition, it contains a large proportion of quartz porphyry and smaller amounts of granite, basalt, gabbro, peridotite, pyroxenite, and serpentinite. The sedimentary sequence is at least partly of Early Cretaceous age and the melange is of Early Cretaceous to very early Paleocene age. They are overlain unconformably by Eocene rocks. The presence in the melange of blocks of quartz porphyry and granite is not easily reconcilable with current plate tectonic concepts in which the sites of formation of melange and plutonic rocks should be hundreds of kilometres apart.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Ketner, K.B., , K., Modjo, S., Naeser, C.W., Obradovich, J.D., Robinson, K., Suptandar, T., and , W., 1976, Pre-Eocene rocks of Java, Indonesia: Journal of Research of the U.S. Geological Survey, v. 4, no. 5, p. 605-614.","productDescription":"10 p.","startPage":"605","endPage":"614","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":307447,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":307444,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1976/vol4issue5/report.pdf","text":"Report","size":"29.18 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"Indonesia","otherGeospatial":"Java","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              106.962890625,\n              -8.49410453755187\n            ],\n            [\n              106.962890625,\n              -6.0968598188879355\n            ],\n            [\n              112.69775390625,\n              -6.0968598188879355\n            ],\n            [\n              112.69775390625,\n              -8.49410453755187\n            ],\n            [\n              106.962890625,\n              -8.49410453755187\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55dd91bde4b0518e354dd1aa","contributors":{"authors":[{"text":"Ketner, Keith B.","contributorId":957,"corporation":false,"usgs":true,"family":"Ketner","given":"Keith","email":"","middleInitial":"B.","affiliations":[],"preferred":true,"id":569841,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":" Kastowo","contributorId":147008,"corporation":false,"usgs":false,"given":"Kastowo","email":"","affiliations":[],"preferred":false,"id":569842,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Modjo, Subroto","contributorId":147009,"corporation":false,"usgs":false,"family":"Modjo","given":"Subroto","email":"","affiliations":[],"preferred":false,"id":569843,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Naeser, C. W.","contributorId":17582,"corporation":false,"usgs":true,"family":"Naeser","given":"C.","middleInitial":"W.","affiliations":[],"preferred":false,"id":569844,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Obradovich, J. D.","contributorId":48966,"corporation":false,"usgs":true,"family":"Obradovich","given":"J.","middleInitial":"D.","affiliations":[],"preferred":false,"id":569845,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":569846,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Suptandar, Tatan","contributorId":147010,"corporation":false,"usgs":false,"family":"Suptandar","given":"Tatan","email":"","affiliations":[],"preferred":false,"id":569847,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":" Wikarno","contributorId":147011,"corporation":false,"usgs":false,"given":"Wikarno","email":"","affiliations":[],"preferred":false,"id":569848,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70156663,"text":"70156663 - 1976 - Sedimentary depositional environments of uranium and petroleum host rocks of the Jackson Group, south Texas","interactions":[],"lastModifiedDate":"2015-08-25T15:16:20","indexId":"70156663","displayToPublicDate":"1976-10-26T17:15:00","publicationYear":"1976","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentary depositional environments of uranium and petroleum host rocks of the Jackson Group, south Texas","docAbstract":"<p>Determination of depositional environments in rocks of the Jackson Group of late Eocene age aids in the exploration for uranium and petroleum in south Texas. During deposition of the Jackson Group, conditions were similar to those existing along the modern Gulf Coast of Texas except for a less arid climate and a greater supply of volcanic sediment. Sedimentary depositional environments recognized in both the modern coast and the Jackson rocks, in order from sea toward land, are: shoreface, beach, lagoon and bay, and paludal. Sediment deposited in these environments in places is interbedded with or transected by fluvial sediment. Both uranium and petroleum are found in the shoreface, beach, and fluvial facies. These facies are characterized by permeable well-sorted sandstone, which is commonly overlain and underlain by less permeable mudstone. A typical vertical sequence in ascending order through a unit containing a beach sandstone facies is (1) lagoonal or paludal clay stone and siltstone, (2) crossbedded fine-grained beach sandstone which contains <i>Ophiomorpha</i> burrows and, which, in places, is locally interbedded with lacustrine or lagoonal mudstone, (3) weakly laminated beach sandstone which contains root impressions at the top and <i>Ophiomorpha</i>, and (4) lagoonal or paludal claystone and siltstone. Gulfward, the beach sandstone apparently grades into highly burrowed, generally finer grained, more poorly sorted, less porous shoreface rocks. The beach facies may include barrier island beaches and mainland beaches, some of which were probably cheniers. Beach facies sandstone units extend many miles along the depositional strike, which nearly parallels the present outcrop strike, but extend only a mile or two (2-3 km) normal to the depositional strike into the subsurface. Recognition of the various facies in outcrops and drill holes is necessary for determination of true stratigraphic relations and for aid in exploration for beach and fluvial sandstone favorable for uranium and petroleum accumulations.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Dickinson, K.A., 1976, Sedimentary depositional environments of uranium and petroleum host rocks of the Jackson Group, south Texas: Journal of Research of the U.S. Geological Survey, v. 4, no. 5, p. 615-629.","productDescription":"15 p.","startPage":"615","endPage":"629","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":307454,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":307453,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1976/vol4issue5/report.pdf","text":"Report","size":"29.18 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"United States","state":"Texas","county":"Karnes County, McMullen County, Duval County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -100,\n              31.541089879585808\n            ],\n            [\n              -94,\n              31.541089879585808\n            ],\n            [\n              -94,\n              29.649868677972304\n            ],\n            [\n              -94.482421875,\n              29.401319510041485\n            ],\n            [\n              -95.361328125,\n              28.844673680771795\n            ],\n            [\n              -96.240234375,\n              28.478348692223165\n            ],\n            [\n              -96.65771484375,\n              28.07198030177986\n            ],\n            [\n              -97.119140625,\n              27.254629577800088\n            ],\n            [\n              -97.22900390625,\n              26.43122806450644\n            ],\n            [\n              -96.9873046875,\n              25.859223554761407\n            ],\n            [\n              -97.42675781249999,\n              25.859223554761407\n            ],\n            [\n              -98.19580078125,\n              26.03704188651584\n            ],\n            [\n              -99.03076171875,\n              26.2145910237943\n            ],\n            [\n              -99.5361328125,\n              27.00040800352175\n            ],\n            [\n              -99.64599609375,\n              27.625140335093324\n            ],\n            [\n              -100,\n              28.130127737874005\n            ],\n            [\n              -100,\n              31.541089879585808\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55dd91bee4b0518e354dd1b9","contributors":{"authors":[{"text":"Dickinson, Kendell A.","contributorId":55430,"corporation":false,"usgs":true,"family":"Dickinson","given":"Kendell","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":569861,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
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