{"pageNumber":"3897","pageRowStart":"97400","pageSize":"25","recordCount":185169,"records":[{"id":35742,"text":"b2079 - 1995 - Imaging the sea floor","interactions":[],"lastModifiedDate":"2012-02-02T00:09:49","indexId":"b2079","displayToPublicDate":"1995-03-01T00:00:00","publicationYear":"1995","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":"2079","title":"Imaging the sea floor","language":"ENGLISH","publisher":"U.S. G.P.O. ; U.S. Geological Survey, Information Services [distributor],","doi":"10.3133/b2079","usgsCitation":"Schlee, J.S., Karl, H., and Torresan, M.E., 1995, Imaging the sea floor: U.S. Geological Survey Bulletin 2079, iii, 24 p. ill., maps ;28 cm., https://doi.org/10.3133/b2079.","productDescription":"iii, 24 p. ill., maps ;28 cm.","costCenters":[],"links":[{"id":164586,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/2079/report-thumb.jpg"},{"id":63660,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/2079/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c67b","contributors":{"authors":[{"text":"Schlee, John Stevens","contributorId":46501,"corporation":false,"usgs":true,"family":"Schlee","given":"John","email":"","middleInitial":"Stevens","affiliations":[],"preferred":false,"id":215144,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karl, Herman A.","contributorId":55796,"corporation":false,"usgs":true,"family":"Karl","given":"Herman A.","affiliations":[],"preferred":false,"id":215145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Torresan, Michael E. mtorresan@usgs.gov","contributorId":4392,"corporation":false,"usgs":true,"family":"Torresan","given":"Michael","email":"mtorresan@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":215143,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":66036,"text":"i2454 - 1995 - Geologic map of the southeastern Kofa Mountains and western Tank Mountains, southwestern Arizona","interactions":[],"lastModifiedDate":"2012-02-10T00:11:08","indexId":"i2454","displayToPublicDate":"1995-03-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2454","subseriesTitle":"NONE","title":"Geologic map of the southeastern Kofa Mountains and western Tank Mountains, southwestern Arizona","language":"ENGLISH","doi":"10.3133/i2454","usgsCitation":"Grubensky, M., Haxel, G.B., and Demsey, K., 1995, Geologic map of the southeastern Kofa Mountains and western Tank Mountains, southwestern Arizona: U.S. Geological Survey IMAP 2454, 1 map :col. ;67 x 62 cm., on sheet 97 x 140 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/i2454.","productDescription":"1 map :col. ;67 x 62 cm., on sheet 97 x 140 cm., folded in envelope 30 x 24 cm.","costCenters":[],"links":[{"id":107426,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_10284.htm","linkFileType":{"id":5,"text":"html"},"description":"10284"},{"id":189542,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"62500","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.16666666666667,33 ], [ -114.16666666666667,33.36666666666667 ], [ -113.75,33.36666666666667 ], [ -113.75,33 ], [ -114.16666666666667,33 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db6888cc","contributors":{"authors":[{"text":"Grubensky, M. J.","contributorId":77975,"corporation":false,"usgs":true,"family":"Grubensky","given":"M. J.","affiliations":[],"preferred":false,"id":273893,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haxel, G. B.","contributorId":71503,"corporation":false,"usgs":true,"family":"Haxel","given":"G.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":273892,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Demsey, K.A.","contributorId":31474,"corporation":false,"usgs":true,"family":"Demsey","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":273891,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":39627,"text":"pp1543AB - 1995 - The diatom genus Actinocyclus in the Western United States","interactions":[],"lastModifiedDate":"2018-02-08T15:59:25","indexId":"pp1543AB","displayToPublicDate":"1995-03-01T00:00:00","publicationYear":"1995","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":"1543","chapter":"A-B","displayTitle":"The diatom genus <i>Actinocyclus</i> in the Western United States","title":"The diatom genus Actinocyclus in the Western United States","docAbstract":"<p>Ten new and four known taxa of the diatom genus <i>Actinocyclus</i> are described, illustrated, and (or) noted from middle Miocene lake deposits in the Western United States. A key is presented to help separate the taxa based on morphological criteria visible in the light microscope. The geologic ranges of <i>Actinocyclus</i> species in the Western United States are discussed based on examination of over 100 localities of diatomaceous lacustrine deposits.</p>","language":"English","publisher":"U.S. Government Printing Office","publisherLocation":"Washington, D.C.","doi":"10.3133/pp1543AB","usgsCitation":"Bradbury, J.P., and Krebs, W.N., 1995, The diatom genus Actinocyclus in the Western United States: U.S. Geological Survey Professional Paper 1543, 73 p., https://doi.org/10.3133/pp1543AB.","productDescription":"73 p.","costCenters":[],"links":[{"id":67264,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1543a-b/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":165858,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1543a-b/report-thumb.jpg"}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a90e4b07f02db655e57","contributors":{"editors":[{"text":"Bradbury, J. Platt","contributorId":91106,"corporation":false,"usgs":true,"family":"Bradbury","given":"J.","email":"","middleInitial":"Platt","affiliations":[],"preferred":false,"id":727918,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Krebs, William N.","contributorId":64313,"corporation":false,"usgs":true,"family":"Krebs","given":"William","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":727919,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Bradbury, J. Platt","contributorId":91106,"corporation":false,"usgs":true,"family":"Bradbury","given":"J.","email":"","middleInitial":"Platt","affiliations":[],"preferred":false,"id":221836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krebs, William N.","contributorId":64313,"corporation":false,"usgs":true,"family":"Krebs","given":"William","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":221837,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70185719,"text":"70185719 - 1995 - XAS study of AsO43− and SeO42− substituted schwertmannites","interactions":[],"lastModifiedDate":"2017-03-28T11:33:49","indexId":"70185719","displayToPublicDate":"1995-03-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5343,"text":"Physica B: Condensed Matter","active":true,"publicationSubtype":{"id":10}},"title":"XAS study of AsO43− and SeO42− substituted schwertmannites","docAbstract":"<p><span>Synthetic schwertmannite samples with varying amounts of arsenate and selenate substituting for sulfate were examined by XAS methods in an attempt to characterize the location of the anion complexes. Selenate appears to both substitute directly for sulfate within tunnels in the structure, and sorb onto the outside of crystallites. No disruption of the basic structure appears with selenate substitution. However, arsenate appears mainly to sorb to the outside of crystallites, destabilizing the structure and poisoning growth.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0921-4526(94)00730-J","usgsCitation":"Waychunas, G., Xu, N., Fuller, C.C., Davis, J., and Bigham, J., 1995, XAS study of AsO43− and SeO42− substituted schwertmannites: Physica B: Condensed Matter, v. 208-209, p. 481-483, https://doi.org/10.1016/0921-4526(94)00730-J.","productDescription":"3 p. ","startPage":"481","endPage":"483","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338458,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"208-209","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58db7634e4b0ee37af29e4be","contributors":{"authors":[{"text":"Waychunas, G.A.","contributorId":90888,"corporation":false,"usgs":true,"family":"Waychunas","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":686526,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xu, Ning","contributorId":189937,"corporation":false,"usgs":false,"family":"Xu","given":"Ning","email":"","affiliations":[],"preferred":false,"id":686527,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, C. C.","contributorId":29858,"corporation":false,"usgs":true,"family":"Fuller","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":686528,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Davis, J.A.","contributorId":71694,"corporation":false,"usgs":true,"family":"Davis","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":686529,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bigham, J.M.","contributorId":28403,"corporation":false,"usgs":true,"family":"Bigham","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":686530,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70185326,"text":"70185326 - 1995 - Chlorofluorocarbons as tracers of groundwater transport processes in a shallow, silty sand aquifer","interactions":[],"lastModifiedDate":"2019-02-25T08:55:20","indexId":"70185326","displayToPublicDate":"1995-03-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Chlorofluorocarbons as tracers of groundwater transport processes in a shallow, silty sand aquifer","docAbstract":"<p><span>Detailed depth profiles of Chlorofluorocarbons CFC-11(CFCl</span><sub>3</sub><span>(, CFC-12 (CF</span><sub>2</sub><span>Cl</span><sub>2</sub><span>) and CFC-113 (C</span><sub>2</sub><span>F</span><sub>3</sub><span>Cl</span><sub>3</sub><span>) have been obtained from a well-characterized field site in central Ontario. Aquifer materials comprise predominantly silty sands, with a mean organic carbon content of 0.03%. Nearly one-dimensional flow exists at this site, and the vertical migration of a well-defined<span>&nbsp;</span></span><sup>3</sup><span>H peak has been tracked through time. Detailed vertical sampling has allowed CFC tracer velocities to be estimated to within 10%. Comparison with<span>&nbsp;</span></span><sup>3</sup><span>H profiles enables estimation of chlorofluorocarbon transport parameters. CFC-12 appears to be the most conservative of the CFCs measured. Sorption at this site is low (</span><i>K</i><sub><i>d</i></sub><span><span>&nbsp;</span>&lt; 0.03), and degradation does not appear to be important. CFC- 113 is retarded both with respect to CFC-12 and with respect to<span>&nbsp;</span></span><sup>3</sup><span>H (</span><i>K</i><sub><i>d</i></sub><span><span>&nbsp;</span>= 0.09−0.14). CFC-11 appears to be degraded both in the highly organic unsaturated zone and below 3.5 m depth in the aquifer, where dissolved oxygen concentrations decrease to below 0.5 mg L</span><sup>−1</sup><span>. The half-life for CFC-11 degradation below 3.5 m depth is less than 2 years. While apparent CFC-12 ages match hydraulic ages to within 20% (up to 30 years), apparent CFC-11 and CFC-113 ages significantly overestimate hydraulic ages at our field site.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94WR02528","usgsCitation":"Cook, P., Solomon, D.K., Plummer, N., Busenberg, E., and Schiff, S., 1995, Chlorofluorocarbons as tracers of groundwater transport processes in a shallow, silty sand aquifer: Water Resources Research, v. 31, no. 3, p. 425-434, https://doi.org/10.1029/94WR02528.","productDescription":"10 p.","startPage":"425","endPage":"434","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337867,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"58d0ea1fe4b0236b68f673a3","contributors":{"authors":[{"text":"Cook, P.G.","contributorId":103807,"corporation":false,"usgs":true,"family":"Cook","given":"P.G.","email":"","affiliations":[],"preferred":false,"id":685179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Solomon, D. K.","contributorId":98324,"corporation":false,"usgs":false,"family":"Solomon","given":"D.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":685180,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":685181,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Busenberg, E.","contributorId":56796,"corporation":false,"usgs":true,"family":"Busenberg","given":"E.","affiliations":[],"preferred":false,"id":685182,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Schiff, S.L.","contributorId":13001,"corporation":false,"usgs":true,"family":"Schiff","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":685183,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70208653,"text":"70208653 - 1995 - Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain","interactions":[],"lastModifiedDate":"2020-02-24T10:33:54","indexId":"70208653","displayToPublicDate":"1995-02-24T10:25:45","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain","docAbstract":"<p>Firm stratigraphic correlations are needed to evaluate the global significance of unconformity bounded units (sequences). We correlate the well-developed uppermost Campanian and Maestrichtian sequences of the New Jersey Coastal Plain to the geomagnetic polarity time scale (GPTS) by integrating Sr-isotopic stratigraphy and biostratigraphy. To do this, we developed a Maestrichtian (ca. 73–65 Ma) Sr-isotopic reference section at Deep Sea Drilling Project Hole 525A in the southeastern Atlantic Ocean. Maestrichtian strata can then be dated by measuring their<span>&nbsp;</span><sup>87</sup>Sr/<sup>86</sup>Sr composition, calibrating to the GPTS of S. C. Cande and D. V. Kent (1993, personal commun.), and using the equation Age (Ma) = 37 326.894–52 639.89 (<sup>87</sup>Sr/<sup>86</sup>Sr). Sr-stratigraphic resolution for the Maestrichtian is estimated as ±1.2 to ±2 m.y.</p><p>At least two unconformity-bounded units comprise the uppermost Campanian to Maestrichtian strata in New Jersey. The lower one, the Marshalltown sequence, is assigned to calcareous nannofossil Zones CC20/21 (∼NC19) and CC22b (∼NC20). It ranges in age from ∼74.1 to 69.9 Ma based on Sr-isotope age estimates. The overlying Navesink sequence is assigned to calcareous nannoplankton Zones CC25–26 (∼NC21–23); it ranges in age from 69.3 to 65 Ma based on Sr-isotope age estimates. The upper part of this sequence, the Tinton Formation, has no calcareous planktonic control; Sr-isotopes provide an age estimate of 66 ± 1.2 Ma (latest Maestrichtian).</p><p>Sequence boundaries at the base and the top of the Marshalltown sequence match boundaries elsewhere in the Atlantic Coastal Plain (Owens and Gohn, 1985) and the inferred global sea-level record of Haq et al. (1987); they support eustatic changes as the mechanism controlling depositional history of this sequence. However, the latest Maestrichtian record in New Jersey does not agree with Haq et al. (1987); we attribute this to correlation and time-scale differences near the Cretaceous/Paleogene boundary. High sedimentation rates in the latest Maestrichtian of New Jersey (Shrewsbury Member of the Red Bank Formation and the Tinton Formation) suggest tectonic uplift and/or rapid progradation during deposition of the highstand systems tract.</p>","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1995)107<0019:UCMSIB>2.3.CO;2","usgsCitation":"Sugarman, P.J., Miller, K., Bukry, D., and Feigenson, M.D., 1995, Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain: GSA Bulletin, v. 107, no. 1, p. 19-37, https://doi.org/10.1130/0016-7606(1995)107<0019:UCMSIB>2.3.CO;2.","productDescription":"19 p.","startPage":"19","endPage":"37","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":372547,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"107","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Sugarman, Peter J.","contributorId":9251,"corporation":false,"usgs":true,"family":"Sugarman","given":"Peter","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":782906,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, K.G.","contributorId":18094,"corporation":false,"usgs":true,"family":"Miller","given":"K.G.","email":"","affiliations":[],"preferred":false,"id":782907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bukry, David 0000-0003-4540-890X dbukry@usgs.gov","orcid":"https://orcid.org/0000-0003-4540-890X","contributorId":3550,"corporation":false,"usgs":true,"family":"Bukry","given":"David","email":"dbukry@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":782908,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Feigenson, Mark D.","contributorId":35198,"corporation":false,"usgs":true,"family":"Feigenson","given":"Mark","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":782909,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70244282,"text":"70244282 - 1995 - Group takes a fresh look at the lithosphere underneath southern Kenya","interactions":[],"lastModifiedDate":"2023-06-12T16:46:18.211667","indexId":"70244282","displayToPublicDate":"1995-02-21T10:26:08","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7458,"text":"Eos Science News","active":true,"publicationSubtype":{"id":10}},"title":"Group takes a fresh look at the lithosphere underneath southern Kenya","docAbstract":"<p><span>Since the turn of the century the well-developed Kenya rift has been a crucial location for studying the interrelationships between extension, uplift, and magmatism. In 1989–1990, an experiment conducted by the Kenya Rift International Seismic Project (KRISP) focused on the central and northern portions of Kenya (Figure 1) and provided a rich base of information regarding the structure and evolution of the rift, which answered many key questions and raised others. Does the crust thin to the south of the Kenya dome as it does to the north?, and if it does, which crustal layer would be mainly affected? How is the Chyulu Hills Quaternary volcanism related to the rifting process? What is the relationship between the crust and lithospheric mantle during extension?</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO076i008p00073-01","usgsCitation":"KRISP Working Group, Enderle, U., Fuchs, K., Lorenz, F., Novak, O., Prodehl, C., Mechie, J., Birt, C., Khan, M., Maguire, P.K., Byrne, G.F., Jacob, A., Imana, E., Keller, G., Roberts, D., Simiyu, S., Luetgert, J.H., Mooney, W.D., Thybo, H., Gajewski, D., Herwanger, J., Vees, R., Mussett, A.E., Dindi, E., Gaciri, S., Nyambok, I., Patel, J.P., Stangl, R., Macharia, H., Mukinya, J., Obel, J., Okoth, W., and Riaroh, D., 1995, Group takes a fresh look at the lithosphere underneath southern Kenya: Eos Science News, v. 76, no. 8, p. 73-82, https://doi.org/10.1029/EO076i008p00073-01.","productDescription":"4 p.","startPage":"73","endPage":"82","costCenters":[],"links":[{"id":418006,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Kenya","otherGeospatial":"East African Rift, Great Rift Valley, Gregory Rift","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              34.80718273996513,\n              1.2109596853965883\n            ],\n            [\n              34.47499939684744,\n              1.1028003878870152\n            ],\n            [\n              34.454237937902406,\n              0.9367350810278623\n            ],\n            [\n              34.3089077252894,\n              0.8018011599303208\n            ],\n            [\n              34.22586188950916,\n              0.6772428067983753\n            ],\n            [\n              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,{"id":70246575,"text":"70246575 - 1995 - Shear-wave splitting from local earthquakes at the Geysers Geothermal Field, California","interactions":[],"lastModifiedDate":"2023-07-10T16:56:13.15144","indexId":"70246575","displayToPublicDate":"1995-02-12T11:45:16","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Shear-wave splitting from local earthquakes at the Geysers Geothermal Field, California","docAbstract":"<p><span>Shear-wave splitting from local microearth-quakes recorded in The Geysers geothermal field shows that seismic anisotropy is distributed in a complex geographic pattern. At stations within about 2 km of northwest-striking regional faults, the fast polarization direction is parallel to those faults. The geothermal field, lying between two such faults, has both northwest and northeast fast polarization directions, often at the same station. This pattern suggests at least two causes of splitting: (1) extensive dilatancy anisotropy (EDA) and (2) fault-produced fractures or rock fabric. The observed anisotropy may derive from the upper 1.5 km of the crust, averaging 4% there, or it may be heterogeneously distributed throughout the upper 5 km. Fast polarization directions coincide with fracture directions inferred from borehole data for one of the youngest rock types in the region, a felsite pluton of about 1 Ma, and with injectate pathways inferred from microseismicity and geochemistry. Including in reservoir models a permeability anisotropy with a pattern similar to seismic anisotropy may help in optimizing fluid injection and steam recovery.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94GL03295","usgsCitation":"Evans, J.R., Julian, B.R., Foulger, G., and Ross, A., 1995, Shear-wave splitting from local earthquakes at the Geysers Geothermal Field, California: Geophysical Research Letters, v. 22, no. 4, p. 501-504, https://doi.org/10.1029/94GL03295.","productDescription":"4 p.","startPage":"501","endPage":"504","costCenters":[],"links":[{"id":418816,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Geysers Geothermal Field, Mayacamas Mountains","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -122.89240209113163,\n              38.88571164883868\n            ],\n            [\n              -122.89240209113163,\n              38.75766115853094\n            ],\n            [\n              -122.6532160912488,\n              38.75766115853094\n            ],\n            [\n              -122.6532160912488,\n              38.88571164883868\n            ],\n            [\n              -122.89240209113163,\n              38.88571164883868\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"22","issue":"4","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Evans, John R. jevans1@usgs.gov","contributorId":621,"corporation":false,"usgs":true,"family":"Evans","given":"John","email":"jevans1@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":877260,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Julian, Bruce R.","contributorId":50063,"corporation":false,"usgs":true,"family":"Julian","given":"Bruce","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":877261,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foulger, G.R.","contributorId":14439,"corporation":false,"usgs":false,"family":"Foulger","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":877262,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ross, Alwyn","contributorId":316270,"corporation":false,"usgs":false,"family":"Ross","given":"Alwyn","email":"","affiliations":[],"preferred":false,"id":877263,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70208290,"text":"70208290 - 1995 - Ubiquitous tar balls with a California-source signature on the shorelines of Prince William Sound, Alaska","interactions":[],"lastModifiedDate":"2020-02-03T10:36:21","indexId":"70208290","displayToPublicDate":"1995-02-03T10:25:10","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Ubiquitous tar balls with a California-source signature on the shorelines of Prince William Sound, Alaska","docAbstract":"<p>Although the shorelines of Prince William Sound still bear traces of the 1989 Exxon Valdez oil spill, most of the flattened tar balls that can be found today on these shorelines are not residues of Exxon Valdez oil. Instead, the carbon-isotopic and hydrocarbonbiomarker signatures of 61 tar ball samples, collected from shorelines throughout the northern and western parts of the sound, are all remarkably similar and have characteristics consistent with those of oil products that originated from the Monterey Formation source rocks of California. The carbonisotopic compositions of the tar balls are all closely grouped (&lt;513Cpdb = -23.7 ± 0.2%o), within the range found in crude oils from those rocks, but are distinct from isotopic compositions of 28 samples of residues from the Exxon ValdezoW spill (&lt;513Cpdb = -29.4 ± 0.1%o). Likewise, values for selected biomarker ratios in the tar balls are all similar but distinct from values of residues from the 1989 oil spill. Carbon-isotopic and biomarker signatures generally relate the tar balls to oil products used in Alaska before ~1970 for construction and pavements. How these tar balls with such similar geochemical characteristics became so widely dispersed throughout the northern and western parts of the sound is not known with certainty, but the great 1964 Alaska earthquake was undoubtedly an important trigger, causing spills from ruptured storage facilities of California-sourced asphalt and fuel oil into Prince William Sound. </p>","language":"English","publisher":"ACS Publications","doi":"10.1021/es00010a033","usgsCitation":"Kvenvolden, K.A., Hostettler, F.D., Carlson, P., Rapp, J., Threlkeld, C.N., and Warden, A., 1995, Ubiquitous tar balls with a California-source signature on the shorelines of Prince William Sound, Alaska: Environmental Science & Technology, v. 29, no. 10, p. 2684-2694, https://doi.org/10.1021/es00010a033.","productDescription":"11 p.","startPage":"2684","endPage":"2694","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":371917,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Prince William Sound","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -149.6337890625,\n              59.734253447591364\n            ],\n            [\n              -144.9755859375,\n              59.734253447591364\n            ],\n            [\n              -144.9755859375,\n              61.63772622120811\n            ],\n            [\n              -149.6337890625,\n              61.63772622120811\n            ],\n            [\n              -149.6337890625,\n              59.734253447591364\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"29","issue":"10","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":781277,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hostettler, Frances D. fdhostet@usgs.gov","contributorId":3383,"corporation":false,"usgs":true,"family":"Hostettler","given":"Frances","email":"fdhostet@usgs.gov","middleInitial":"D.","affiliations":[],"preferred":true,"id":781278,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carlson, P.R.","contributorId":97055,"corporation":false,"usgs":true,"family":"Carlson","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":781279,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rapp, John B.","contributorId":32028,"corporation":false,"usgs":true,"family":"Rapp","given":"John B.","affiliations":[],"preferred":false,"id":781280,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Threlkeld, C. 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,{"id":70246658,"text":"70246658 - 1995 - Inflation of Long Valley Caldera from one year of continuous GPS observations","interactions":[],"lastModifiedDate":"2023-07-12T17:57:47.107623","indexId":"70246658","displayToPublicDate":"1995-02-02T12:44:33","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Inflation of Long Valley Caldera from one year of continuous GPS observations","docAbstract":"<p><span>A permanent Global Positioning System receiver at Casa Diablo Hot Springs, Long Valley Caldera, California was installed in January, 1993, and has operated almost continuously since then. The data have been transmitted daily to the Jet Propulsion Laboratory for routine analysis with data from the Fiducial Laboratories for an International Natural sciences Network (FLINN) by the JPL FLINN analysis center. Results from these analyses have been used to interpret the on going deformation at Long Valley, with data excluded from periods when the antenna was covered under 2.5 meters of snow and from some periods when Anti Spoofing was enforced on the GPS signal. The remaining time series suggests that uplift of the resurgent dome of Long Valley Caldera during 1993 has been 2.5±1.1 cm/yr and horizontal motion has been 3.0±0.7 cm/yr at S53W in a no-net-rotation global reference frame, or 1.5±0.7 cm/yr at S14W relative to the Sierra Nevada block. These rates are consistent with uplift predicted from frequent horizontal strain measurements. Spectral analysis of the observations suggests that tidal forcing of the magma chamber is not a source of the variability in the 3 dimensional station location. These results suggest that remotely operated, continuously recording GPS receivers could prove to be a reliable tool for volcano monitoring throughout the world.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94GL02968","usgsCitation":"Webb, F., Bursik, M., Dixon, T., Farina, F., Marshall, G., and Stein, R.S., 1995, Inflation of Long Valley Caldera from one year of continuous GPS observations: Geophysical Research Letters, v. 22, no. 3, p. 195-198, https://doi.org/10.1029/94GL02968.","productDescription":"4 p.","startPage":"195","endPage":"198","costCenters":[],"links":[{"id":418907,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Long Valley, Long Valley Caldera","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n      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Marcus","contributorId":36030,"corporation":false,"usgs":true,"family":"Bursik","given":"Marcus","affiliations":[],"preferred":false,"id":877812,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dixon, Timothy","contributorId":191178,"corporation":false,"usgs":false,"family":"Dixon","given":"Timothy","email":"","affiliations":[],"preferred":false,"id":877813,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Farina, Frederic","contributorId":316597,"corporation":false,"usgs":false,"family":"Farina","given":"Frederic","email":"","affiliations":[],"preferred":false,"id":877814,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Marshall, Grant","contributorId":316598,"corporation":false,"usgs":false,"family":"Marshall","given":"Grant","email":"","affiliations":[],"preferred":false,"id":877815,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stein, Ross S. 0000-0001-7586-3933 rstein@usgs.gov","orcid":"https://orcid.org/0000-0001-7586-3933","contributorId":2604,"corporation":false,"usgs":true,"family":"Stein","given":"Ross","email":"rstein@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":877816,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70244265,"text":"70244265 - 1995 - Which fault and what next?","interactions":[],"lastModifiedDate":"2023-06-09T15:47:00.706963","indexId":"70244265","displayToPublicDate":"1995-02-02T10:38:46","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Which fault and what next?","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Springer","doi":"10.1038/373388a0","usgsCitation":"Stein, R.S., 1995, Which fault and what next?: Nature, v. 373, p. 388-389, https://doi.org/10.1038/373388a0.","productDescription":"2 p.","startPage":"388","endPage":"389","costCenters":[],"links":[{"id":417966,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"373","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stein, Ross S. 0000-0001-7586-3933 rstein@usgs.gov","orcid":"https://orcid.org/0000-0001-7586-3933","contributorId":2604,"corporation":false,"usgs":true,"family":"Stein","given":"Ross","email":"rstein@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":875080,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70248770,"text":"70248770 - 1995 - 238U-234U-230Th chronometry of Fe-Mn crusts: Growth processes and recovery of thorium isotopic ratios of seawater","interactions":[],"lastModifiedDate":"2023-09-20T19:42:16.353084","indexId":"70248770","displayToPublicDate":"1995-02-01T14:09:49","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"displayTitle":"<sup>238</sup>U-<sup>234</sup>U-<sup>230</sup>Th chronometry of Fe-Mn crusts: Growth processes and recovery of thorium isotopic ratios of seawater","title":"238U-234U-230Th chronometry of Fe-Mn crusts: Growth processes and recovery of thorium isotopic ratios of seawater","docAbstract":"<p><span>Comparison of <sup>(</sup></span><span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><span class=\"MJX_Assistive_MathML\"><sup><sup>234</sup>U) excess</sup>⁄<sub>(<sup>238</sup>U)</sub></span></span></span><span> and (</span><span class=\"math\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext></math>\"><span class=\"MJX_Assistive_MathML\"><sup><sup>230</sup>Th</sup>⁄<sub><sup>232</sup>Th</sub>)</span></span></span><span>&nbsp;activity ratios in oceanic Fe-Mn deposits provides a method for assessing the closed-system behaviour of&nbsp;</span><sup>238</sup><span>U-</span><sup>234</sup><span>U-</span><sup>230</sup><span>Th, as well as variations in the initial uranium and thorium isotopic ratios of the precipitated metal oxides. This approach is illustrated using a Fe-Mn crust from Lotab seamount (Marshall Islands, west equatorial Pacific). Here we report uranium and thorium isotopic compositions in five subsamples from the surface of one large 5 cm diameter botryoid of this crust, and from two depth profiles of the outermost rim of the same botryoid. The decrease of <sup>(</sup><span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><span class=\"MJX_Assistive_MathML\"><sup><sup>234</sup>U) excess</sup>⁄<sub>(<sup>238</sup>U)</sub></span></span></span></span><span>&nbsp;and (<span class=\"math\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext></math>\"><span class=\"MJX_Assistive_MathML\"><sup><sup>230</sup>Th</sup>⁄<sub><sup>232</sup>Th</sub>)</span></span></span></span><span>&nbsp;activity ratio with depth in the two profiles gives mean growth rates, for the last 150 ka, of 7.8 ± 2 mm/Ma and 6.6 ± 1 mm/Ma, respectively. All data points (surface and core samples) but one, define a linear correlation in the&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-5-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Ln</mtext><mtext></mtext><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext><mtext>&amp;#x2212;</mtext><mtext>Ln</mtext><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><span class=\"MJX_Assistive_MathML\">Ln<span>(</span><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext></math>\"><sup><sup>230</sup>Th</sup>⁄<sub><sup>232</sup>Th</sub>)</span>−Ln[<span><sup>(</sup></span><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><sup><sup>234</sup>U) excess</sup>⁄<sub>(<sup>238</sup>U)</sub>]</span></span></span></span><span>&nbsp;diagram. This correlation indicates that for all points the U-Th system remained closed after the Fe-Mn layer precipitated, and that the different samples possessed the same initial Uranium and thorium isotope ratios. Furthermore, these results show that the preserved surface of this Fe-Mn crust may not be the present-day growth surface, and that the thorium and uranium isotopic ratios of seawater in west equatorial Pacific have not changed during the past 150 ka. The initial thorium activity ratio is estimated from the correlation obtained between&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-6-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Ln</mtext><mtext></mtext><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext><mtext>&amp;#x2212;</mtext><mtext>Ln</mtext><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><span class=\"MJX_Assistive_MathML\">Ln<span>(</span><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext></math>\"><sup><sup>230</sup>Th</sup>⁄<sub><sup>232</sup>Th</sub>)</span>−Ln<span id=\"MathJax-Element-5-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Ln</mtext><mtext></mtext><mtext>(</mtext><msup><mi></mi><mn>230</mn></msup><mtext>Th</mtext><msup><mi></mi><mn>232</mn></msup><mtext>Th</mtext><mtext>&amp;#x2212;</mtext><mtext>Ln</mtext><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\">[<span><sup>(</sup></span><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>(</mtext><msup><mi></mi><mn>234</mn></msup><mtext>U)excess</mtext><mtext>(</mtext><msup><mi></mi><mn>238</mn></msup><mtext>U</mtext><mtext>)</mtext></math>\"><sup><sup>234</sup>U) excess</sup>⁄<sub>(<sup>238</sup>U)</sub>]</span></span></span></span></span><span>.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(94)00379-Z","usgsCitation":"Chabaux, F., Cohen, A., O’Nions, R.K., and Hein, J., 1995, 238U-234U-230Th chronometry of Fe-Mn crusts: Growth processes and recovery of thorium isotopic ratios of seawater: Geochimica et Cosmochimica Acta, v. 59, no. 3, p. 633-638, https://doi.org/10.1016/0016-7037(94)00379-Z.","productDescription":"6 p.","startPage":"633","endPage":"638","costCenters":[],"links":[{"id":420982,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Marshall Islands","otherGeospatial":"Lotab Seamount, Pacific Ocean","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              164.28083043371623,\n              10.713753709011044\n            ],\n            [\n              164.28083043371623,\n              8.48270428923037\n            ],\n            [\n              167.92028936116532,\n              8.48270428923037\n            ],\n            [\n              167.92028936116532,\n              10.713753709011044\n            ],\n            [\n              164.28083043371623,\n              10.713753709011044\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"59","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Chabaux, F.","contributorId":53972,"corporation":false,"usgs":true,"family":"Chabaux","given":"F.","email":"","affiliations":[],"preferred":false,"id":883540,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cohen, A.S.","contributorId":19313,"corporation":false,"usgs":true,"family":"Cohen","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":883541,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Nions, R. K.","contributorId":29138,"corporation":false,"usgs":true,"family":"O’Nions","given":"R.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":883542,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hein, J.R. 0000-0002-5321-899X","orcid":"https://orcid.org/0000-0002-5321-899X","contributorId":61429,"corporation":false,"usgs":true,"family":"Hein","given":"J.R.","affiliations":[],"preferred":false,"id":883543,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70248335,"text":"70248335 - 1995 - Stratigraphic significance of siliceous microfossils collected during NAUTIPERC dives (off Peru, 5 °-6°S)","interactions":[],"lastModifiedDate":"2023-09-07T18:54:39.532456","indexId":"70248335","displayToPublicDate":"1995-02-01T13:46:34","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2673,"text":"Marine Micropaleontology","active":true,"publicationSubtype":{"id":10}},"title":"Stratigraphic significance of siliceous microfossils collected during NAUTIPERC dives (off Peru, 5 °-6°S)","docAbstract":"<p>The geological evolution of the northern Peru convergent margin can be traced using samples collected during deep-sea dives of the submersible<span>&nbsp;</span><i>Nautile</i>. In the Paita area (5°–6°S), the sedimentary sequence was intensively sampled along the main scarp of the middle slope area. It consists of Upper Miocene (7–9 Ma) to Pleistocene siltstone, sandstone and rare dolostone. The age distribution of these samples is the basis for a new geologic interpretation of the multichannel seismic line CDP3.</p><p>Siliceous microfossils (both diatoms and radiolarians) show influence of both cold and temperature waters (local species mixed with upwelling ones). Diatom assemblages studied from the NP1-13 and NP1-15 dives bear a strong resemblance to assemblages from the Pisco Formation of southern Peru.</p><p>Micropaleontological data from siliceous microfossils, provide evidence for two main unconformities, one is at the base of the Quaternary sequence and the other corresponds to a hiatus of 1 Myr, separating the Upper Miocene (7–8 Ma) sediments from uppermost Miocene (5–6 Ma) sediments.</p><p>During the past 400 kyr, a wide rollover fold developed in the middle slope area associated with a major seaward dipping detachment fault. A catastrophic debris a valanche occurred as the results of an oversteepening of the landward flank of the rollover fold. The gravity failure of the slope, recognized by SeaBEAM and hydrosweep mapping, displaced enough material to produce a destructive tsunami which occurred 13.8 ± 2.7 kyr ago.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0377-8398(94)00014-E","usgsCitation":"De Wever, P., Bourgois, J., Caulet, J., Fourtanier, E., Barron, J., and Dumitrica, P., 1995, Stratigraphic significance of siliceous microfossils collected during NAUTIPERC dives (off Peru, 5 °-6°S): Marine Micropaleontology, v. 24, no. 3-4, p. 287-305, https://doi.org/10.1016/0377-8398(94)00014-E.","productDescription":"19 p.","startPage":"287","endPage":"305","costCenters":[],"links":[{"id":420642,"type":{"id":24,"text":"Thumbnail"},"url":"http://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Peru","otherGeospatial":"Pacific Ocean","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -83.60595035803571,\n              -5.138594399665109\n            ],\n            [\n              -83.60595035803571,\n              -6.721676578113986\n            ],\n            [\n              -81.1180992158362,\n              -6.721676578113986\n            ],\n            [\n              -81.1180992158362,\n              -5.138594399665109\n            ],\n            [\n              -83.60595035803571,\n              -5.138594399665109\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"24","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"De Wever, P.","contributorId":329533,"corporation":false,"usgs":false,"family":"De Wever","given":"P.","email":"","affiliations":[],"preferred":false,"id":882559,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bourgois, J.","contributorId":83281,"corporation":false,"usgs":true,"family":"Bourgois","given":"J.","email":"","affiliations":[],"preferred":false,"id":882560,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caulet, J.-P.","contributorId":329534,"corporation":false,"usgs":false,"family":"Caulet","given":"J.-P.","email":"","affiliations":[],"preferred":false,"id":882561,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fourtanier, E.","contributorId":54361,"corporation":false,"usgs":true,"family":"Fourtanier","given":"E.","affiliations":[],"preferred":false,"id":882562,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Barron, J.","contributorId":66416,"corporation":false,"usgs":true,"family":"Barron","given":"J.","affiliations":[],"preferred":false,"id":882563,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Dumitrica, P.","contributorId":329535,"corporation":false,"usgs":false,"family":"Dumitrica","given":"P.","email":"","affiliations":[],"preferred":false,"id":882564,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70245137,"text":"70245137 - 1995 - Stratigraphic and structural synthesis of a Miocene extensional terrane, southeast California and west-central Arizona","interactions":[],"lastModifiedDate":"2023-06-16T15:33:56.108306","indexId":"70245137","displayToPublicDate":"1995-02-01T10:19:54","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Stratigraphic and structural synthesis of a Miocene extensional terrane, southeast California and west-central Arizona","docAbstract":"<p>Detailed stratigraphy and isotopic dating of stratigraphic sections in the Colorado River extensional corridor support a regional correlation of highly faulted Tertiary stratigraphic sequences and provide a chronologic framework for interpreting the evolution of low-angle normal (detachment) faults. On the basis of this correlation, we define six tilting domains in the upper plate of the Whipple, Chemehuevi, and Rawhide detachment faults and identify three discrete episodes of detachment faulting that began in the early Miocene and ended in middle Miocene time. Episodes of rapid detachment faulting are indicated by extreme tilting of upper-plate fault blocks and overlying Miocene sequences, fanning dips of basinal deposits, and angular unconformities that represent short time gaps in the accumulation of syntectonic sequences.</p><p>During the first episode of detachment faulting at about 20 Ma, the upper plate segmented to form the domains. Basin subsidence and extreme tilting of upper-plate fault blocks and syntectonic deposits characterized the eastern Topock, Crossman, Aubrey, Parker Dam, and Buckskin-Rawhide domains, whereas the western Mopah domain was the site of abundant volcanic activity but no basins or tilting. A second episode of extension at about 18 Ma produced extreme tilts in the Buckskin-Rawhide domain but upper-plate blocks in the Mopah domain tilted moderately. A third regionwide faulting episode between 14 and 12 Ma was due to localized uplift of middle and lower crust and eventual exposure of the detachment faults and their footwalls. The upper-plate fault blocks responded passively to localized slip on the detachment faults. Rapid extension began on the Whipple-Chemehuevi detachment fault at 20 Ma and had shifted southward to the Buckskin-Rawhide detachment fault by 18 Ma; volcanic activity also shifted southward to the Buckskin-Rawhide domain at this time. The southward shift of rapid extension and volcanism probably represents buildup and release of strain at localized sites in the lower plate. Otherwise, stratigraphic and structural relations indicate that the locations of upper-plate basins, faulting and tilting of upper-plate blocks, and position of the breakaway zone remained stable throughout the major phases of extension.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1995)107<0241:SASSOA>2.3.CO;2","usgsCitation":"Nielson, J.E., and Beratan, K.K., 1995, Stratigraphic and structural synthesis of a Miocene extensional terrane, southeast California and west-central Arizona: Bulletin of the Geological Society of America, v. 107, no. 2, p. 241-252, https://doi.org/10.1130/0016-7606(1995)107<0241:SASSOA>2.3.CO;2.","productDescription":"12 p.","startPage":"241","endPage":"252","costCenters":[],"links":[{"id":418162,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -115.63925306119957,\n              35.1120498760428\n            ],\n            [\n              -115.63925306119957,\n              33.98772646876533\n            ],\n            [\n              -113.74781991261354,\n              33.98772646876533\n            ],\n            [\n              -113.74781991261354,\n              35.1120498760428\n            ],\n            [\n              -115.63925306119957,\n              35.1120498760428\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"107","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Nielson, Jane E.","contributorId":9701,"corporation":false,"usgs":true,"family":"Nielson","given":"Jane","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":875652,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Beratan, Kathi K.","contributorId":304218,"corporation":false,"usgs":false,"family":"Beratan","given":"Kathi","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":875653,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":3329,"text":"cir1108 - 1995 - Energy and the environment - Application of geosciences to decision-making","interactions":[],"lastModifiedDate":"2017-05-18T12:15:59","indexId":"cir1108","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","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":"1108","title":"Energy and the environment - Application of geosciences to decision-making","docAbstract":"<p>This volume contains 67 extended abstracts that summarize some of the oral and poster presentations of the tenth annual V. E. McKelvey forum on mineral and energy resources, held in Washington, D.C., Feb. 13-17, 1995. The focus is on our energy resources and the environment, new research techniques, and cooperative efforts between the USGS and industry, State and Federal agencies, universities, and other countries.</p>","language":"English","publisher":"U.S. Government Printing Office","publisherLocation":"Washington, D.C.","doi":"10.3133/cir1108","usgsCitation":"1995, Energy and the environment - Application of geosciences to decision-making: U.S. Geological Survey Circular 1108, viii, 134 p., https://doi.org/10.3133/cir1108.","productDescription":"viii, 134 p.","numberOfPages":"146","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":121330,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1995/1108/report-thumb.jpg"},{"id":30338,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1995/1108/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db602867","contributors":{"editors":[{"text":"Carter, Lorna M.H.","contributorId":37260,"corporation":false,"usgs":true,"family":"Carter","given":"Lorna","email":"","middleInitial":"M.H.","affiliations":[],"preferred":false,"id":658160,"contributorType":{"id":2,"text":"Editors"},"rank":1}]}}
,{"id":4222,"text":"cir1118 - 1995 - 1995 National assessment of United States oil and gas resources","interactions":[],"lastModifiedDate":"2017-02-21T12:30:15","indexId":"cir1118","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","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":"1118","title":"1995 National assessment of United States oil and gas resources","docAbstract":"<pre> The purpose of the National Oil and Gas Resource Assessment Project \nis to develop a set of scientifically based hypotheses concerning the\nquantities of oil and gas that could be added to the measured (proved)\nreserves of the United States.\n\n     The word assessment sometimes has the connotation of an inventory. \nBut this is not the case in this study. The quantities being evaluated here\nare largely unknown. This assessment is an attempt to bound the\nuncertainties concerning potential additions to oil and gas reserves\nunder specified conditions. As such, the assessment consists of a set\nof constructs, based on the best information and theory available to\nthe USGS scientists charged with this effort.\n</pre>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/cir1118","usgsCitation":"U.S. National Oil and Gas Resource Assessment Team, 1995, 1995 National assessment of United States oil and gas resources: U.S. Geological Survey Circular 1118, 20 p., https://doi.org/10.3133/cir1118.","productDescription":"20 p.","costCenters":[],"links":[{"id":31336,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1995/1118/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":75,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/circ/1995/circ1118/execsum.html","linkFileType":{"id":5,"text":"html"}},{"id":120942,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1995/1118/report-thumb.jpg"}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4917e4b0b290850eee0b","contributors":{"authors":[{"text":"U.S. National Oil and Gas Resource Assessment Team","contributorId":128197,"corporation":true,"usgs":false,"organization":"U.S. National Oil and Gas Resource Assessment Team","id":528171,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70162693,"text":"70162693 - 1995 - Species-specific patterns of hyperostosis in marine teleost fishes","interactions":[],"lastModifiedDate":"2016-01-29T09:34:07","indexId":"70162693","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2660,"text":"Marine Biology","active":true,"publicationSubtype":{"id":10}},"title":"Species-specific patterns of hyperostosis in marine teleost fishes","docAbstract":"<p><span>The occurrence of swollen or hyperostotic bones in skeletal preparations, preserved museum material or whole fresh specimens of marine teleost fishes was identified in 92 species belonging to 22 families. Patterns of hyperostotic skeletal growth were typically consistent and often species-specific in all individuals larger than a certain size. The taxonomic distribution of hyperostosis in diverse phylogenetic groups suggests that it has arisen independently many times. Selected bones from two species of the family Carangidae, horse-eye jack&nbsp;</span><i class=\"EmphasisTypeItalic \">Caranx latus</i><span>&nbsp;Agassiz and crevalle jack</span><i class=\"EmphasisTypeItalic \">Caranx hippos</i><span>&nbsp;(Linnaeus), were examined in detail by light and electron microscopy. Nonhyperostotic bone contained osteoid-producing osteoblasts, resorbing osteoclasts, occasional osteocytes, and a rich vascular network, all characteristics of cellular bone. Thus, these fishes have a spatial juxtaposition of cellular and acellular bone tissues in adjacent and often serially homologous bone sites. The functional significance of hyperostosis is unknown, but it is a predictable manifestation of bone growth and development for the many taxa in which it occurs.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/BF00349291","usgsCitation":"Smith-Vaniz, W.F., Kaufman, L., and Glowacki, J., 1995, Species-specific patterns of hyperostosis in marine teleost fishes: Marine Biology, v. 121, no. 4, p. 573-580, https://doi.org/10.1007/BF00349291.","productDescription":"8 p.","startPage":"573","endPage":"580","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":315025,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"121","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56ac9b81e4b0403299f53b43","contributors":{"authors":[{"text":"Smith-Vaniz, William F.","contributorId":152526,"corporation":false,"usgs":false,"family":"Smith-Vaniz","given":"William","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":590169,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaufman, L.S.","contributorId":73548,"corporation":false,"usgs":true,"family":"Kaufman","given":"L.S.","email":"","affiliations":[],"preferred":false,"id":590170,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Glowacki, J.","contributorId":6803,"corporation":false,"usgs":true,"family":"Glowacki","given":"J.","email":"","affiliations":[],"preferred":false,"id":590171,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":63662,"text":"gp998A - 1995 - Total-field aeromagnetic and derivative maps of the Lawton area, southwestern Oklahoma","interactions":[],"lastModifiedDate":"2012-02-10T00:11:10","indexId":"gp998A","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"998","chapter":"A","title":"Total-field aeromagnetic and derivative maps of the Lawton area, southwestern Oklahoma","language":"ENGLISH","doi":"10.3133/gp998A","usgsCitation":"Jones-Cecil, M., 1995, Total-field aeromagnetic and derivative maps of the Lawton area, southwestern Oklahoma: U.S. Geological Survey Geophysical Investigations Map 998, 2 maps :col. ;each 65 x 80 cm., on sheet 147 x 86 cm., folded in envelope 30 x 24 cm. +1 ancillary sheet (84 x 94 cm.), https://doi.org/10.3133/gp998A.","productDescription":"2 maps :col. ;each 65 x 80 cm., on sheet 147 x 86 cm., folded in envelope 30 x 24 cm. +1 ancillary sheet (84 x 94 cm.)","costCenters":[],"links":[{"id":249878,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0998a/report.pdf","size":"26","linkFileType":{"id":1,"text":"pdf"}},{"id":249879,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0998a/plate-1.pdf","size":"8196","linkFileType":{"id":1,"text":"pdf"}},{"id":249880,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0998a/plate-2.pdf","size":"13727","linkFileType":{"id":1,"text":"pdf"}},{"id":253428,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0998a/report-thumb.jpg"}],"scale":"100000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -99.25,34.5 ], [ -99.25,35.083333333333336 ], [ -98.36749999999999,35.083333333333336 ], [ -98.36749999999999,34.5 ], [ -99.25,34.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db62816a","contributors":{"authors":[{"text":"Jones-Cecil, Meridee","contributorId":68313,"corporation":false,"usgs":true,"family":"Jones-Cecil","given":"Meridee","email":"","affiliations":[],"preferred":false,"id":269330,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70185364,"text":"70185364 - 1995 - Sorption and coprecipitation of trace concentrations of thorium with various minerals under conditions simulating an acid uranium mill effluent environment","interactions":[],"lastModifiedDate":"2017-03-21T11:46:56","indexId":"70185364","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2001,"text":"Inorganica Chimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Sorption and coprecipitation of trace concentrations of thorium with various minerals under conditions simulating an acid uranium mill effluent environment","docAbstract":"<p><span>Sorption of thorium by pre-existing crystals of anglesite (PbSO</span><sub>4</sub><span>), apatite (Ca</span><sub>5</sub><span>(PO</span><sub>4</sub><span>)</span><sub>3</sub><span>(HO)), barite (BaSO</span><sub>4</sub><span>), bentonite (Na</span><sub>0.7</sub><span>Al</span><sub>3.3</sub><span>Mg</span><sub>0.7</sub><span>Si</span><sub>8</sub><span>O</span><sub>20</sub><span>(OH)</span><sub>4</sub><span>), celestite (SrSO</span><sub>4</sub><span>), fluorite (CaF</span><sub>2</sub><span>), galena (PbS), gypsum (CaSO</span><sub>4</sub><span>·2H</span><sub>2</sub><span>O), hematite (Fe</span><sub>2</sub><span>O</span><sub>3</sub><span>), jarosite (KFe</span><sub>3</sub><span>(SO</span><sub>4</sub><span>)</span><sub>2</sub><span>(OH)</span><sub>6</sub><span>), kaolinite (Al</span><sub>2</sub><span>O</span><sub>3</sub><span>·2SiO</span><sub>2</sub><span>·2H</span><sub>2</sub><span>O), quartz (SiO</span><sub>2</sub><span>) and sodium feldspar (NaAlSi</span><sub>3</sub><span>O</span><sub>8</sub><span>) was studied under conditions that simulate an acidic uranium mill effluent environment. Up to 100% removal of trace quantitiees of thorim (approx. 1.00 ppm in 0.01 N H</span><sub>2</sub><span>SO</span><sub>4</sub><span>) from solution occurred within 3 h with fluorite and within 48 h in the case of bentonite. Quartz, jarosite, hematite, sodium feldspar, gypsum and galena removed less than 15% of the thorium from solution. In the coprecipitation studies, barite, anglesite, gypsum and celestite were formed in the presence of thorium (approx. 1.00 ppm). Approximately all of the thorium present in solution coprecipitated with barite and celestite; 95% coprecipitated with anglesite and less than 5% with gypsum under similar conditions. When jarosite was precipitated in the presence of thorium, a significant amount of thorium (78%) was incorporated in the precipitate.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0020-1693(94)04251-P","usgsCitation":"Landa, E.R., Le, A.H., Luck, R.L., and Yeich, P.J., 1995, Sorption and coprecipitation of trace concentrations of thorium with various minerals under conditions simulating an acid uranium mill effluent environment: Inorganica Chimica Acta, v. 229, no. 1-2, p. 247-252, https://doi.org/10.1016/0020-1693(94)04251-P.","productDescription":"6 p. ","startPage":"247","endPage":"252","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337925,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"229","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58d23b95e4b0236b68f82947","contributors":{"authors":[{"text":"Landa, Edward R. erlanda@usgs.gov","contributorId":2112,"corporation":false,"usgs":true,"family":"Landa","given":"Edward","email":"erlanda@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":685340,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Le, Anh H.","contributorId":189598,"corporation":false,"usgs":false,"family":"Le","given":"Anh","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":685341,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luck, Rudy L.","contributorId":189600,"corporation":false,"usgs":false,"family":"Luck","given":"Rudy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":685342,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yeich, Philip J.","contributorId":189599,"corporation":false,"usgs":false,"family":"Yeich","given":"Philip","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":685343,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70185322,"text":"70185322 - 1995 - Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems","interactions":[],"lastModifiedDate":"2018-09-13T15:08:33","indexId":"70185322","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems","docAbstract":"<p><span>The distribution of microbially mediated terminal electron-accepting processes (TEAPs( was investigated in four hydrologically diverse groundwater systems by considering patterns of electron acceptor (nitrate, sulfate) consumption, intermediate product (hydrogen (H</span><sub>2</sub><span>)) concentrations, and final product (ferrous iron, sulfide, and methane) production. In each hydrologic system a determination of predominant TEAPs could be arrived at, but the level of confidence appropriate for each determination differed. In a portion of the lacustrine aquifer of the San Joaquin Valley, for example, all three indicators (sulfate concentrations decreasing, H</span><sub>2</sub><span>concentrations in the 1–2 nmol range, and sulfide concentrations increasing along flow paths identified sulfate reduction as the predominant TEAP, leading to a high degree of confidence in the determination. In portions of the Floridan aquifer and a petroleum hydrocarbon-contaminated aquifer, sulfate reduction and methanogenesis are indicated by production of sulfide and methane, and hydrogen oncentrations in the 1–4 nmol and 5–14 nmol range, respectively. However, because electron acceptor consumption could not be documented in these systems, less confidence is warranted in the TEAP determination. In the Black Creek aquifer, no pattern of sulfate consumption and sulfide production were observed, but H2 concentrations indicated sulfate reduction as the predominant TEAP. In this case, where just a single line of evidence is available, the least confidence in the TEAP diagnosis is justified. Because this methodology is based on measurable water chemistry parameters and upon the physiology of microbial electron transfer processes, it provides a better description of predominant redox processes in groundwater systems than more traditional Eh-based methods.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94WR02525","usgsCitation":"Chapelle, F.H., McMahon, P.B., Dubrovsky, N.M., Fujii, R., Oaksford, E.T., and Vroblesky, D.A., 1995, Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems: Water Resources Research, v. 31, no. 2, p. 359-371, https://doi.org/10.1029/94WR02525.","productDescription":"13 p. ","startPage":"359","endPage":"371","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337863,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"58d0ea1fe4b0236b68f673a5","contributors":{"authors":[{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":true,"id":685166,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McMahon, Peter B. 0000-0001-7452-2379 pmcmahon@usgs.gov","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":724,"corporation":false,"usgs":true,"family":"McMahon","given":"Peter","email":"pmcmahon@usgs.gov","middleInitial":"B.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":685167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dubrovsky, Neil M. 0000-0001-7786-1149 nmdubrov@usgs.gov","orcid":"https://orcid.org/0000-0001-7786-1149","contributorId":1799,"corporation":false,"usgs":true,"family":"Dubrovsky","given":"Neil","email":"nmdubrov@usgs.gov","middleInitial":"M.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":685168,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fujii, Roger F.","contributorId":189556,"corporation":false,"usgs":false,"family":"Fujii","given":"Roger F.","affiliations":[],"preferred":false,"id":685169,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Oaksford, Edward T.","contributorId":82693,"corporation":false,"usgs":true,"family":"Oaksford","given":"Edward","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":685170,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Vroblesky, Don A. vroblesk@usgs.gov","contributorId":413,"corporation":false,"usgs":true,"family":"Vroblesky","given":"Don","email":"vroblesk@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":685171,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70185319,"text":"70185319 - 1995 - An updated model of induced airflow in the unsaturated zone","interactions":[],"lastModifiedDate":"2019-02-22T07:26:55","indexId":"70185319","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"An updated model of induced airflow in the unsaturated zone","docAbstract":"<p><span>Simulation of induced movement of air in the unsaturated zone provides a method to determine permeability and to design vapor extraction remediation systems. A previously published solution to the airflow equation for the case in which the unsaturated zone is separated from the atmosphere by a layer of lower permeability (such as a clay layer) has been superseded. The new solution simulates airflow through the layer of lower permeability more rigorously by defining the leakage in terms of the upper boundary condition rather than by adding a leakage term to the governing airflow equation. This note presents the derivation of the new solution. Formulas for steady state pressure, specific discharge, and mass flow in the domain are obtained for the new model and for the case in which the unsaturated zone is in direct contact with the atmosphere.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94WR02423","usgsCitation":"Baehr, A.L., and Joss, C.J., 1995, An updated model of induced airflow in the unsaturated zone: Water Resources Research, v. 31, no. 2, p. 417-421, https://doi.org/10.1029/94WR02423.","productDescription":"5 p. ","startPage":"417","endPage":"421","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337860,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"58d0ea1fe4b0236b68f673a7","contributors":{"authors":[{"text":"Baehr, Arthur L.","contributorId":104523,"corporation":false,"usgs":true,"family":"Baehr","given":"Arthur","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":685158,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Joss, Craig J.","contributorId":189555,"corporation":false,"usgs":false,"family":"Joss","given":"Craig","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":685159,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70185374,"text":"70185374 - 1995 - Modeling the effects of variable groundwater chemistry on adsorption of molybdate","interactions":[],"lastModifiedDate":"2019-02-25T08:37:54","indexId":"70185374","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Modeling the effects of variable groundwater chemistry on adsorption of molybdate","docAbstract":"<p><span>Laboratory experiments were used to identify and quantify processes having a significant effect on molybdate (MoO</span><sub>4</sub><sup>2−</sup><span>) adsorption in a shallow alluvial aquifer on Cape Cod, assachusetts. Aqueous chemistry in the aquifer changes as a result of treated sewage effluent mixing with groundwater. Molybdate adsorption decreased as<span>&nbsp;</span></span><i>p</i><span>H, ionic strength, and the concentration of competing anions increased. A diffuse-layer surface complexation model was used to simulate adsorption of MoO</span><sub>4</sub><sup>2−</sup><span>, phosphate (PO</span><sub>4</sub><sup>3−</sup><span>), and sulfate (SO</span><sub>4</sub><sup>2−</sup><span>) on aquifer sediment. Equilibrium constants for the model were calculated by calibration to data from batch experiments. The model was then used in a one-dimensional solute transport program to successfully simulate initial breakthrough of MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>from column experiments. A shortcoming of the solute transport program was the inability to account for kinetics of physical and chemical processes. This resulted in a failure of the model to predict the slow rate of desorption of MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>from the columns. The mobility of MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>ncreased with ionic strength and with the formation of aqueous complexes with calcium, magnesium, and sodium. Failure to account for MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>speciation and ionic strength in the model resulted in overpredicting MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>adsorption. Qualitatively, the laboratory data predicted the observed behavior of MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>in the aquifer, where retardation of MoO</span><sub>4</sub><sup>2−</sup><span><span>&nbsp;</span>was greatest in uncontaminated roundwater having low<span>&nbsp;</span></span><i>p</i><span>H, low ionic strength, and low concentrations of PO</span><sub>4</sub><sup>3−</sup><span><span>&nbsp;</span>and SO</span><sub>4</sub><sup>2−</sup><span>.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/94WR02675","usgsCitation":"Stollenwerk, K.G., 1995, Modeling the effects of variable groundwater chemistry on adsorption of molybdate: Water Resources Research, v. 31, no. 2, p. 347-357, https://doi.org/10.1029/94WR02675.","productDescription":"11 p. ","startPage":"347","endPage":"357","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337935,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"58d23b95e4b0236b68f82944","contributors":{"authors":[{"text":"Stollenwerk, Kenneth G. kgstolle@usgs.gov","contributorId":578,"corporation":false,"usgs":true,"family":"Stollenwerk","given":"Kenneth","email":"kgstolle@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":685369,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":65151,"text":"i2450 - 1995 - Geologic map of the Portal Quadrangle and vicinity, Cochise County, Southeast Arizona","interactions":[],"lastModifiedDate":"2012-02-10T00:11:02","indexId":"i2450","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2450","subseriesTitle":"NONE","title":"Geologic map of the Portal Quadrangle and vicinity, Cochise County, Southeast Arizona","language":"ENGLISH","doi":"10.3133/i2450","usgsCitation":"Drewes, H., Du Bray, E., and Pallister, J., 1995, Geologic map of the Portal Quadrangle and vicinity, Cochise County, Southeast Arizona: U.S. Geological Survey IMAP 2450, 1 map :col. ;58 x 60 cm., on sheet 94 x 133 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/i2450.","productDescription":"1 map :col. ;58 x 60 cm., on sheet 94 x 133 cm., folded in envelope 30 x 24 cm.","costCenters":[],"links":[{"id":107424,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_10281.htm","linkFileType":{"id":5,"text":"html"},"description":"10281"},{"id":189012,"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\": [ [ [ -109.25,31.8675 ], [ -109.25,32 ], [ -109.11749999999999,32 ], [ -109.11749999999999,31.8675 ], [ -109.25,31.8675 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aefe4b07f02db6915b1","contributors":{"authors":[{"text":"Drewes, H.D.","contributorId":72461,"corporation":false,"usgs":true,"family":"Drewes","given":"H.D.","email":"","affiliations":[],"preferred":false,"id":272737,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Du Bray, E. A.","contributorId":22333,"corporation":false,"usgs":true,"family":"Du Bray","given":"E. A.","affiliations":[],"preferred":false,"id":272735,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pallister, J.S.","contributorId":46534,"corporation":false,"usgs":true,"family":"Pallister","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":272736,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":62506,"text":"gq1758 - 1995 - Geologic map of the Lehman Caves quadrangle, White Pine County, Nevada","interactions":[],"lastModifiedDate":"2012-02-10T00:11:00","indexId":"gq1758","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","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":"1758","title":"Geologic map of the Lehman Caves quadrangle, White Pine County, Nevada","language":"ENGLISH","doi":"10.3133/gq1758","usgsCitation":"Miller, E.L., Grier, S.P., and Brown, J.L., 1995, Geologic map of the Lehman Caves quadrangle, White Pine County, Nevada: U.S. Geological Survey Geologic Quadrangle 1758, 1 map :col. ;58 x 45 cm., on sheet 74 x 102 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/gq1758.","productDescription":"1 map :col. ;58 x 45 cm., on sheet 74 x 102 cm., folded in envelope 30 x 24 cm.","costCenters":[],"links":[{"id":102790,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_1241.htm","linkFileType":{"id":5,"text":"html"},"description":"1241"},{"id":248669,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gq/1758/report.pdf","size":"77","linkFileType":{"id":1,"text":"pdf"}},{"id":253896,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gq/1758/report-thumb.jpg"}],"scale":"24000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.25,39 ], [ -114.25,39.1175 ], [ -114.11749999999999,39.1175 ], [ -114.11749999999999,39 ], [ -114.25,39 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db696e35","contributors":{"authors":[{"text":"Miller, Elizabeth L.","contributorId":29896,"corporation":false,"usgs":true,"family":"Miller","given":"Elizabeth","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":267470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grier, Susan P.","contributorId":70857,"corporation":false,"usgs":true,"family":"Grier","given":"Susan","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":267471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Janet L.","contributorId":107753,"corporation":false,"usgs":true,"family":"Brown","given":"Janet","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":267472,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":4877,"text":"ds14 - 1995 - National geochronological and natural radioelement data bases","interactions":[],"lastModifiedDate":"2012-02-02T00:05:44","indexId":"ds14","displayToPublicDate":"1995-02-01T00:00:00","publicationYear":"1995","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"14","title":"National geochronological and natural radioelement data bases","docAbstract":"This CD-ROM contains both the National Geochronological Data Base [NGDB] and the Natural Radioelement Data Base [NRDB]. Supporting location, geologic, and reference information is provided for both data bases. The NGDB is a compilation of more than 30,000 individual published Pb-alpha, fission-track, K-Ar, Rb-Sr, U-Th-Pb, and Sm-Nd rock and mineral ages reported on approximately 18,000 dated samples from the United States. A program is provided to search the data files by latitude and longitude, state, analytical method, and age range. The NGDB is provided as quote-comma delimited files that can be entered into most commercial spreadsheet programs. The NRDB gives gamma-ray spectrometric analyses of the natural radioelements (U, Th, and K) for more than 8500 whole-rock samples obtained under the USGS Natural Radioelement Distribution Project. A program is provided to search the data files by state, keyword, U content, Th content, and K content.","language":"ENGLISH","publisher":"The Survey ;\r\nFor sale by USGS Distribution Branch],","doi":"10.3133/ds14","issn":"1088-1018","usgsCitation":"Zartman, R.E., Bush, C.A., and Abston, C., 1995, National geochronological and natural radioelement data bases: U.S. Geological Survey Data Series 14, 1 computer laser optical disc :col. ;4 3/4 in., https://doi.org/10.3133/ds14.","productDescription":"1 computer laser optical disc :col. ;4 3/4 in.","costCenters":[],"links":[{"id":139576,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db6983d7","contributors":{"authors":[{"text":"Zartman, Robert E.","contributorId":47356,"corporation":false,"usgs":true,"family":"Zartman","given":"Robert","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":150012,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bush, Charles A. cbush@usgs.gov","contributorId":1258,"corporation":false,"usgs":true,"family":"Bush","given":"Charles","email":"cbush@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":150010,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Abston, C. C.","contributorId":30617,"corporation":false,"usgs":true,"family":"Abston","given":"C. C.","affiliations":[],"preferred":false,"id":150011,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}