{"pageNumber":"324","pageRowStart":"8075","pageSize":"25","recordCount":11004,"records":[{"id":70016158,"text":"70016158 - 1990 - Epithermal gold-siver deposits in the western United States: time-space products of evolving plutonic, volcanic and tectonic environments","interactions":[],"lastModifiedDate":"2018-03-29T11:07:40","indexId":"70016158","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Epithermal gold-siver deposits in the western United States: time-space products of evolving plutonic, volcanic and tectonic environments","docAbstract":"<p><span>The western United States has been the locus of considerable subaerial volcanic and plutonic igneous activity since the mid-Mesozoic. After the destruction of the Jurassic-Cretaceous magmatic arc-trench system, subduction was re-established in the Late Mesozoic with low-angle underthrusting of the oceanic plate beneath western North America. This resulted in crustal shortening during the Late Cretaceous to Early Tertiary and removal of the mantle lithosphere west of the Rocky Mountains. Commencing in the Eocene, flat subduction ceased, the volcanic arc began to re-establish itself along the continental margin, and the hingeline along the steepening subducting plate migrated from east to west. The crust east of the migrating hingeline was exposed to hot asthenosphere, and widespread tectonics and volcanic activity resulted. Hydrothermal activity accompanied the volcanism resulting in numerous epithermal gold-silver deposits. The temporal and spatial distributions of epithermal deposits in the region are therefore systematic and can be subdivided into discrete time intervals which are related to widespread changes in magmatic activity. Time intervals selected for discussion are Pre-Cenozoic, 66-55 Ma, 54-43 Ma, 42-34 Ma, 33-24 Ma, 23-17 Ma, and &lt;17 Ma. Many of these intervals contain both sedimentary-rock and two varieties of volcanic-rock hosted deposits (adularia-sericite and alunite-kaolinite ± pyrophyllite). Continental rifting is important to the formation of deposits, and, within any given region, it is at the initiation of&nbsp;</span><i>deep</i><span><span>&nbsp;</span>rifting that alunite-kaolinite ± pyrophyllite type epithermal deposits are formed. Adularia-sericite type deposits are most common, being related to all compositions and styles of volcanic activity. Therefore, the volcano-tectonic context of the western United States provides a unified framework in which to understand and explore for epithermal type deposits.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0375-6742(90)90053-D","issn":"03756742","usgsCitation":"Berger, B.R., and Bonham, H.F., 1990, Epithermal gold-siver deposits in the western United States: time-space products of evolving plutonic, volcanic and tectonic environments: Journal of Geochemical Exploration, v. 36, no. 1-3, p. 103-142, https://doi.org/10.1016/0375-6742(90)90053-D.","productDescription":"40 p.","startPage":"103","endPage":"142","numberOfPages":"40","costCenters":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":223096,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0a19e4b0c8380cd521d8","contributors":{"authors":[{"text":"Berger, Byron R. bberger@usgs.gov","contributorId":1490,"corporation":false,"usgs":true,"family":"Berger","given":"Byron","email":"bberger@usgs.gov","middleInitial":"R.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":372697,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonham, Harold F. Jr.","contributorId":60224,"corporation":false,"usgs":true,"family":"Bonham","given":"Harold","suffix":"Jr.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":372696,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70015958,"text":"70015958 - 1990 - Contrasting soils and landscapes of the Piedmont and Coastal Plain, eastern United States","interactions":[],"lastModifiedDate":"2019-03-07T13:10:05","indexId":"70015958","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1801,"text":"Geomorphology","active":true,"publicationSubtype":{"id":10}},"title":"Contrasting soils and landscapes of the Piedmont and Coastal Plain, eastern United States","docAbstract":"<p>The Piedmont and Coastal Plain physiographic provinces comprise 80 percent of the Atlantic Coastal states from New Jersey to Georgia. The provinces are climatically similar. The soil moisture regime is udic. The soil temperature regime is typically thermic from Virginia through Georgia, although it is mesic at altitudes above 400 m in Georgia and above 320 m in Virginia. The soil temperature regime is mesic for the Piedmont and Coastal Plain from Maryland through New Jersey. The tightly folded, structurally complex crystalline rocks of the Piedmont and the gently dipping “layer-cake” clastic sedimentary rocks and sediments of the Coastal Plain respond differently to weathering, pedogenesis, and erosion. The different responses result in two physiographically contrasting terrains; each has distinctive near-surface hydrology, regolith, drainage morphology, and morphometry.</p><p>The Piedmont is predominantly an erosional terrain. Interfluves are as narrow as 0.5 to 2 km, and are convex upward. Valleys are as narrow as 0.1 to 0.5 km and generally V-shaped in cross section. Alluvial terraces are rare and discontinuous. Soils in the Piedmont are typically less than 1 m thick, have less sand and more clay than Coastal Plain soils, and generally have not developed sandy epipedons. Infiltration rates for Piedmont soils are low at 6–15 cm/h. The soil/saprolite, soil/rock, and saprolite/rock boundaries are distinct (can be placed within 10 cm) and are characterized by ponding and/or lateral movement of water. Water movement through soil into saprolite, and from saprolite into rock, is along joints, foliation, bedding planes and faults. Soils and isotopic data indicate residence times consistent with a Pleistocene age for most Piedmont soils.</p><p>The Coastal Plain is both an erosional and a constructional terrain. Interfluves commonly are broader than 2 km and are flat. Valleys are commonly as wide as 1 km to greater than 10 km, and contain numerous alluvial and estuarine terrace sequences that can be correlated along valleys for tens of kilometers. Coastal Plain soils are typically as thick as 2 to 8 m, have high sand content throughout, and have sandy epipedons. These epipedons consist of both A and E horizons and are 1 to 4 m thick. In Coastal Plain soils, the boundaries are transitional between the solum and the underlying parent material and between weathered and unweathered parent material. Infiltration rates for Coastal Plain soils are typically higher at 13–28 cm/h, than are those for Piedmont soils. Indeed, for unconsolidated quartz sand, rates may exceed 50 cm/h. Water moves directly from the soil into the parent material through intergranularpores with only minor channelization along macropores, joints, and fractures. The comparatively high infiltration capacity results in relatively low surface runoff, and correspondingly less erosion than on the Piedmont uplands.</p><p>Due to differences in Piedmont and Coastal Plain erosion rates, topographic inversion is common along the Fall Zone; surfaces on Cenozoic sedimentary deposits of the Coastal Plain are higher than erosional surfaces on regolith weathered from late Precambrian to early Paleozoic crystalline rocks of the Piedmont. Isotopic, paleontologic, and soil data indicate that Coastal Plain surficial deposits are post-middle Miocene to Holocene in age, but most are from 5 to 2 Ma. Thus, the relatively uneroded surfaces comprise a Pliocene landscape. In the eastern third of the Coastal Plain, deposits that are less than 3.5 Ma include alluvial terraces, marine terraces and barrier/back-barrier complexes as morphostratigraphic units that cover thousands of square kilometers. Isotopic and soil data indicate that eastern Piedmont soils range from late Pliocene to Pleistocene in age, but are predominantly less than 2 Ma old. Thus, the eroded uplands of the Piedmont “peneplain” comprise a Pleistocene landscape.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0169-555X(90)90015-I","issn":"0169555X","usgsCitation":"Markewich, H.W., Pavich, M.J., and Buell, G.R., 1990, Contrasting soils and landscapes of the Piedmont and Coastal Plain, eastern United States: Geomorphology, v. 3, no. 3-4, p. 417-447, https://doi.org/10.1016/0169-555X(90)90015-I.","productDescription":"31 p.","startPage":"417","endPage":"447","costCenters":[],"links":[{"id":223136,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa7ce4b0c8380cd4db0e","contributors":{"authors":[{"text":"Markewich, Helaine W. 0000-0001-9656-3243 helainem@usgs.gov","orcid":"https://orcid.org/0000-0001-9656-3243","contributorId":2008,"corporation":false,"usgs":true,"family":"Markewich","given":"Helaine","email":"helainem@usgs.gov","middleInitial":"W.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":372184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pavich, Milan J. mpavich@usgs.gov","contributorId":2348,"corporation":false,"usgs":true,"family":"Pavich","given":"Milan","email":"mpavich@usgs.gov","middleInitial":"J.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":372186,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buell, Gary R. grbuell@usgs.gov","contributorId":3107,"corporation":false,"usgs":true,"family":"Buell","given":"Gary","email":"grbuell@usgs.gov","middleInitial":"R.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":372185,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016188,"text":"70016188 - 1990 - Sediment movement along the U.S. east coast continental shelf-II. Modelling suspended sediment concentration and transport rate during storms","interactions":[],"lastModifiedDate":"2018-04-09T13:20:27","indexId":"70016188","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Sediment movement along the U.S. east coast continental shelf-II. Modelling suspended sediment concentration and transport rate during storms","docAbstract":"Long-term near-bottom wave and current observations and a one-dimensional sediment transport model are used to calculate the concentration and transport of sediment during winter storms at 60-80 m water depth along the southern flank of Georges Bank and in the Mid-Atlantic Bight. Calculations are presented for five stations, separated by more than 600 km alongshelf, that have different bottom sediment texture, bedforms and current conditions. A modified version of the sediment transport model presented by Grant and Glenn (1983, Technical Report to the American Gas Association), Glenn (1983, D.Sc. Thesis, M.I.T.), and Glenn and Grant (1987, Journal of Geophysical Research, 92, 8244-8264) is used to examine the influence of wave-current interaction, sediment stratification, and limitations on the erodibility of the bottom sediments on the concentration of sediment in the water column and on transport. Predicted suspended sediment concentrations are higher than observed, based on beam transmissometer measurements, unless an erosion limit of order a few millimeters for sediments finer than 94 ??m is imposed. The agreement between predicted and measured beam attenuation is better at stations that have significant amounts of silt plus clay in the surficial sediments than for stations with sandy sediments. Sediment concentrations during storms estimated by Moody et al. (1987, Continental Shelf Research, 7, 609-628) are within 50% of the model predictions. Sediment transport rates for sediments 94 ??m and finer are determined largely by the concentrations in the surficial sediment and the erosion depth limit. Large alongshelf transports in the direction of storm-driven currents are inferred for stations in the Mid-Atlantic Bight. During a 115-day period in winter 1979-1980, the net transport of sediment along the shelf was westward; benthic storms (defined as periods when the bottom wave stress exceeded the current stress by 2 dyn cm-2) occurred between 23 and 73% of the time, and greater than 91% of the net alongshelf transport was during storms. ?? 1990.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/0278-4343(90)90049-R","issn":"02784343","usgsCitation":"Lyne, V., Butman, B., and Grant, W., 1990, Sediment movement along the U.S. east coast continental shelf-II. Modelling suspended sediment concentration and transport rate during storms: Continental Shelf Research, v. 10, no. 5, p. 429-460, https://doi.org/10.1016/0278-4343(90)90049-R.","productDescription":"32 p.","startPage":"429","endPage":"460","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":222838,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Georges Bank, Mid-Atlantic Bight","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -76,\n              36\n            ],\n            [\n              -59.58984374999999,\n              36\n            ],\n            [\n              -59.58984374999999,\n              43\n            ],\n            [\n              -76,\n              43\n            ],\n            [\n              -76,\n              36\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"10","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b899ee4b08c986b316e43","contributors":{"authors":[{"text":"Lyne, V.D.","contributorId":78473,"corporation":false,"usgs":true,"family":"Lyne","given":"V.D.","email":"","affiliations":[],"preferred":false,"id":372788,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Butman, B.","contributorId":85580,"corporation":false,"usgs":true,"family":"Butman","given":"B.","email":"","affiliations":[],"preferred":false,"id":372789,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grant, W.D.","contributorId":11764,"corporation":false,"usgs":true,"family":"Grant","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":372787,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70015815,"text":"70015815 - 1990 - Modern aerial gamma-ray spectrometry and regional potassium map of the conterminous United States","interactions":[],"lastModifiedDate":"2015-12-03T16:41:35","indexId":"70015815","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Modern aerial gamma-ray spectrometry and regional potassium map of the conterminous United States","docAbstract":"<p><span>Aerial gamma-ray surveys of the natural environment measure the flux of gamma rays produced by the radioactive decay of&nbsp;</span><sup><span>40</span></sup><span>K,&nbsp;</span><sup><span>214</span></sup><span>Bi, and&nbsp;</span><sup><span>208</span></sup><span>Tl in the upper 10&ndash;20 cm of surface materials.&nbsp;</span><sup><span>40</span></sup><span>K is a radioactive potassium isotope which can be used to estimate the total amount of potassium in the soils and rocks.&nbsp;</span><sup><span>214</span></sup><span>Bi is a decay product of the&nbsp;</span><sup><span>238</span></sup><span>U radioactive decay series and is used to estimate the uranium concentrations, and&nbsp;</span><sup><span>208</span></sup><span>Tl, a decay product of the&nbsp;</span><sup><span>232</span></sup><span>Th radioactive decay series, is used to estimate thorium concentrations. Aerial gamma-ray data covering the 48 contiguous states of the United States have been compiled to produce maps showing the distributions of equivalent uranium, equivalent thorium, and potassium. This compilation involved processing the aerial survey data from about 470 1&deg; &times; 2&deg; quadrangle maps.</span></p>\n<p><span>The aerial gamma-ray data were obtained as part of the National Uranium Resource Evaluation (NURE) Program sponsored by the U.S. Department of Energy during the period 1975-1983. References for the Open-File Reports that describe the surveys and data collection can be found in Bendix Field Engineering Corp. (1983). The aerial surveys were flown by contractors using fixed-wing and helicopter systems with 33-50 L (liters) of thallium-activated sodium iodide (NaI (TI)) crystals. The nominal survey altitude used is 122 m. The survey lines were generally east-west with line spacings of 1.6-10 km. Tie lines were flown perpendicular to the flight lines at intervals of 16- 30 km. The data were corrected for background from aircraft contamination and cosmic rays, altitude variations, airborne 214Bi, and Compton scattering. The gamma-ray systems were calibrated using the calibrations pads at Grand&nbsp;Junction, Colorado (Ward, 1978 ) and the dynamic test strip at Lake Mead, Arizona (Geodata International, Inc., 1977). </span></p>\n<p>&nbsp;</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geochemical Exploration","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"New York, NY","doi":"10.1016/0375-6742(90)90076-M","issn":"03756742","usgsCitation":"Duval, J.S., 1990, Modern aerial gamma-ray spectrometry and regional potassium map of the conterminous United States: Journal of Geochemical Exploration, v. 39, no. 1-2, p. 249-253, https://doi.org/10.1016/0375-6742(90)90076-M.","productDescription":"5 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,{"id":70016035,"text":"70016035 - 1990 - Sources and fractionation processes influencing the isotopic distribution of H, O and C in the Long Valley hydrothermal system, California, U.S.A.","interactions":[],"lastModifiedDate":"2023-03-01T12:27:01.75232","indexId":"70016035","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Sources and fractionation processes influencing the isotopic distribution of H, O and C in the Long Valley hydrothermal system, California, U.S.A.","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-gulliver text-s\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id7\"><p>The isotopic ratios of H, O and C in water within the Long Valley caldera, California reflect input from sources external to the hydrothermal reservoir. A decrease in δD in precipitation of 0.5‰ km<sup>−1</sup>, from west to east across Long Valley, is caused by the introduction of less fractionated marine moisture through a low elevation embayment in the Sierra Nevada Mountain Range. Relative to seasonal fluctuations in precipitation (−158 to −35‰.), δD ranges in hot and cold surface and groundwaters are much less variable (−135 to −105‰.). Only winter and spring moisture, reflecting higher precipitation rates with lighter isotopic signatures, recharge the hydrological system. The hydrothermal fluids are mixtures of isotopically heavy recharge (δD = − 115‰, δ<sup>18</sup>O = − 15‰) derived from the Mammoth embayment, and isotopically lighter cold water (δD = −135‰, δ<sup>18</sup>O = −18‰). This cold water is not representative of current local recharge. The δ<sup>13</sup>C values for dissolved carbon in hot water are significantly heavier (− 7 to − 3‰) than in cold water (−18 to −10‰) denoting a separate hydrothermal origin. These δ<sup>13</sup>C values overlie the range generally attributed to magmatic degassing of CO<sub>2</sub>. However, δ<sup>13</sup>C values of metamorphosed Paleozoic basement carbonates surrounding Long Valley fall in a similar range, indicating that hydrothermal decarbonization reactions are a probable source of CO<sub>2</sub>. The δ<sup>13</sup>C and δ<sup>18</sup>O values of secondary travertime and vein calcite indicate respective fractionation with CO<sub>2</sub><span>&nbsp;</span>and H<sub>2</sub>O at temperatures approximating current hydrothermal conditions.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0883-2927(90)90057-C","issn":"08832927","usgsCitation":"White, A.F., Peterson, M.L., Wollenberg, H., and Flexser, S., 1990, Sources and fractionation processes influencing the isotopic distribution of H, O and C in the Long Valley hydrothermal system, California, U.S.A.: Applied Geochemistry, v. 5, no. 5-6, p. 571-585, https://doi.org/10.1016/0883-2927(90)90057-C.","productDescription":"15 p.","startPage":"571","endPage":"585","numberOfPages":"15","costCenters":[],"links":[{"id":222936,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","volume":"5","issue":"5-6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9353e4b08c986b31a42a","contributors":{"authors":[{"text":"White, A. F.","contributorId":36546,"corporation":false,"usgs":true,"family":"White","given":"A.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":372391,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterson, M. L.","contributorId":49930,"corporation":false,"usgs":false,"family":"Peterson","given":"M.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":372393,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wollenberg, H.","contributorId":8542,"corporation":false,"usgs":true,"family":"Wollenberg","given":"H.","email":"","affiliations":[],"preferred":false,"id":372390,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Flexser, S.","contributorId":37478,"corporation":false,"usgs":true,"family":"Flexser","given":"S.","email":"","affiliations":[],"preferred":false,"id":372392,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016126,"text":"70016126 - 1990 - Precious metals of Wyoming","interactions":[],"lastModifiedDate":"2012-03-12T17:18:47","indexId":"70016126","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Precious metals of Wyoming","docAbstract":"Within the State boundaries are numerous gold deposits and anomalies scattered throughout the geological record. Many examples occur in rocks ranging in age from Archean to Tertiary, and in Quaternary to Recent unconsolidated gravels and sands. Yet relatively few of these deposits and anomalies have been explored and only a handful have been drilled. Since much of Wyoming is underlain by an Archean craton similar to the Superior Province of Canada, the eastern and southern African craton, and the Pilbara and Yilgarn blocks of Western Australia, one would expect Wyoming to also have significant mineralization.","conferenceTitle":"Proceedings of the Gold '90 Symposium - Gold '90","conferenceDate":"26 February 1990 through 1 March 1990","conferenceLocation":"Salt Lake City, UT, USA","language":"English","publisher":"Publ by Soc of Mining Engineers of AIME","publisherLocation":"Littleton, CO, United States","isbn":"087335091X","usgsCitation":"Hausel, W., 1990, Precious metals of Wyoming, Proceedings of the Gold '90 Symposium - Gold '90, Salt Lake City, UT, USA, 26 February 1990 through 1 March 1990, p. 53-63.","startPage":"53","endPage":"63","numberOfPages":"11","costCenters":[],"links":[{"id":223406,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a810be4b0c8380cd7b337","contributors":{"editors":[{"text":"Hausen, Donald M.","contributorId":113109,"corporation":false,"usgs":true,"family":"Hausen","given":"Donald","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":508546,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Halbe, Douglas N.","contributorId":111774,"corporation":false,"usgs":true,"family":"Halbe","given":"Douglas","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":508544,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Petersen, Erich U.","contributorId":112088,"corporation":false,"usgs":true,"family":"Petersen","given":"Erich","email":"","middleInitial":"U.","affiliations":[],"preferred":false,"id":508545,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Tafuri, William J.","contributorId":114054,"corporation":false,"usgs":true,"family":"Tafuri","given":"William","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":508547,"contributorType":{"id":2,"text":"Editors"},"rank":4}],"authors":[{"text":"Hausel, W. Dan","contributorId":13299,"corporation":false,"usgs":true,"family":"Hausel","given":"W. Dan","affiliations":[],"preferred":false,"id":372609,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70186821,"text":"70186821 - 1990 - Postrelease monitoring of radio-instrumented sea otters in Prince William Sound","interactions":[],"lastModifiedDate":"2021-04-09T13:04:46.693116","indexId":"70186821","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"seriesTitle":{"id":5441,"text":"Biological Report","printIssn":"0895-1926","active":true,"publicationSubtype":{"id":19}},"seriesNumber":"90(12)","title":"Postrelease monitoring of radio-instrumented sea otters in Prince William Sound","docAbstract":"<p>Sea otters (<i>Enhydra lutris</i>) that were captured in western Prince William Sound (PWS) or the Gulf of Alaska, treated, and held in captivity at the temporary rehabilitation centers established in response to the T/V <i>Exxon Valdez</i> oil spill were instrumented with radio transmitters, released into eastern PWS, and monitored by radiotelemetry. We undertook the present study to gain information for guiding the release of the remaining captive otters and evaluating the efficacy of sea otter rehabilitation after exposure to crude oil. Radio transmitters were attached to the flippers of seven sea otters released in May 1989 and monitored for periods of a few hours to more than 60 days. However, little was learned about the fate of these animals because the radio transmitters used proved unreliable. Forty-five additional sea otters from the&nbsp;rehabilitation centers were implanted with radio transmitters, released into northeastern PWS and monitored for 8 months. During the first 20 days after the first release of these implanted otters (n = 21), they were more mobile than wild-caught and released sea otters studied in PWS, from 1984 through 1990. All were alive and vigorous at the end of the 20-day period. Tracking of all 45 implanted sea otters during the 8-month period showed that the otters remained highly mobile. Many (46.6%) crossed into western PWS. However, by the end of the 8 months, 12 of the instrumented otters were dead and 9 were missing. One radio failed. These mortality and missing rates are much higher than those normally observed for adult sea otters in PWS. The death rate was highest in winter. These data suggest that, despite the tremendous amount of money and energy directed toward the treatment and care of these animals, the sea otters released from the centers were not completely rehabilitated, that is, not returned to a normal state. We recommend that future policies focus on preventing otters from becoming oiled, rather than attempting to treat them after oiling has occurred. This focus is especially recommended because of stress and disease risks associated with bringing wild animals into captivity.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V <i>Exxon Valdez</i> oil spill into Prince William Sound","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Sea Otter Symposium: Proceedings of a Symposium to Evaluate the Response Effort on Behalf of Sea Otters After the T/V Exxon Valdez Oil Spill Into Prince William Sound","conferenceDate":"April 17-19, 1990","conferenceLocation":"Anchorage, Alaska","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, D.C.","doi":"10.5962/bhl.title.45854","issn":"0895-1926","usgsCitation":"Monnett, C., Rotterman, L., Stack, C., and Monson, D., 1990, Postrelease monitoring of radio-instrumented sea otters in Prince William Sound, <i>in</i> Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V <i>Exxon Valdez</i> oil spill into Prince William Sound, Anchorage, Alaska, April 17-19, 1990, p. 400-409, https://doi.org/10.5962/bhl.title.45854.","productDescription":"10 p.","startPage":"400","endPage":"409","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":487532,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5962/bhl.title.45854","text":"Publisher Index Page"},{"id":339587,"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              -155.56640625,\n              58.516651799363785\n            ],\n            [\n              -145.98632812499997,\n              58.516651799363785\n            ],\n            [\n              -145.98632812499997,\n              61.83541335794044\n            ],\n            [\n              -155.56640625,\n              61.83541335794044\n            ],\n            [\n              -155.56640625,\n              58.516651799363785\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","publicComments":"U.S. Fish and Wildlife Service Biological Report 90(12)","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58edeb44e4b0eed1ab8cb04f","contributors":{"editors":[{"text":"Bayha, Keith","contributorId":30270,"corporation":false,"usgs":false,"family":"Bayha","given":"Keith","email":"","affiliations":[{"id":6654,"text":"USFWS","active":true,"usgs":false}],"preferred":false,"id":690680,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Kormendy, Jennifer","contributorId":190781,"corporation":false,"usgs":false,"family":"Kormendy","given":"Jennifer","email":"","affiliations":[],"preferred":false,"id":690681,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Monnett, C.","contributorId":190778,"corporation":false,"usgs":false,"family":"Monnett","given":"C.","email":"","affiliations":[],"preferred":false,"id":690676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rotterman, L.M.","contributorId":190779,"corporation":false,"usgs":false,"family":"Rotterman","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":690677,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stack, C.","contributorId":190780,"corporation":false,"usgs":false,"family":"Stack","given":"C.","email":"","affiliations":[],"preferred":false,"id":690678,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Monson, Daniel H. 0000-0002-4593-5673 dmonson@usgs.gov","orcid":"https://orcid.org/0000-0002-4593-5673","contributorId":140480,"corporation":false,"usgs":true,"family":"Monson","given":"Daniel H.","email":"dmonson@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":false,"id":690679,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70138235,"text":"70138235 - 1990 - Integration of COCORP deep reflection and magnetic anomaly analysis in the southeastern United States: Implications for origin of the Brunswick and East Coast magnetic anomalies: Alternative interpretation and reply","interactions":[],"lastModifiedDate":"2017-09-06T11:38:42","indexId":"70138235","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Integration of COCORP deep reflection and magnetic anomaly analysis in the southeastern United States: Implications for origin of the Brunswick and East Coast magnetic anomalies: Alternative interpretation and reply","docAbstract":"<p><span>Integration of magnetic anomaly analysis with COCORP deep reflection data from the southeastern United States provides three new constraints on the interpretation of the Brunswick and East Coast magnetic anomalies, as well as on the reflection data. These are as follows. (1) The source of the Brunswick anomaly lies within the deep crust. This anomaly is not caused by a Mesozoic rift basin, as proposed by some workers. (2) A simple, seaward-dipping, high- susceptibility slab model can explain both the Brunswick and East Coast magnetic anomalies. The along-strike change in character of the two anomalies results largely from a change in azimuth of the source body. (3) Beneath the southeastern United States, this source body dips south, lies immediately on the south flank of the prominent southward-dipping reflective zone revealed on COCORP surveys, and was previously associated with the Alleghanian suture between North America and Africa. These results imply that a dipping, highly magnetized zone in the upper plate of the Alleghanian suture is responsible for both the Brunswick and East Coast magnetic anomalies. The high- susceptibility material responsible for these anomalies might be mafic lower continental or oceanic crust thrust upward during Alleghanian continental collision, or mafic igneous material intruded into the upper plate of the suture zone during subsequent Mesozoic rifting, or both. The latter hypothesis implies that the Alleghanian suture acted, as a zone of weakness (a repository ?) which was reactivated to control the site of ultimate Atlantic rifting and possibly initial sea-floor spreading.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1990)102<0271:IOCDRA>2.3.CO;2","usgsCitation":"Hutchinson, D.R., Klitgord, K.D., Trehu, A.M., McBride, J.H., and Nelson, K.D., 1990, Integration of COCORP deep reflection and magnetic anomaly analysis in the southeastern United States: Implications for origin of the Brunswick and East Coast magnetic anomalies: Alternative interpretation and reply: Geological Society of America Bulletin, v. 102, no. 2, p. 271-279, https://doi.org/10.1130/0016-7606(1990)102<0271:IOCDRA>2.3.CO;2.","productDescription":"9 p.","startPage":"271","endPage":"279","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":297310,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -82,\n              29.152161283318915\n            ],\n            [\n              -74,\n              29.152161283318915\n            ],\n            [\n              -74,\n              36\n            ],\n            [\n              -82,\n              36\n            ],\n            [\n              -82,\n              29.152161283318915\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"102","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"54dd2bd7e4b08de9379b3513","contributors":{"authors":[{"text":"Hutchinson, Deborah R. 0000-0002-2544-5466 dhutchinson@usgs.gov","orcid":"https://orcid.org/0000-0002-2544-5466","contributorId":521,"corporation":false,"usgs":true,"family":"Hutchinson","given":"Deborah","email":"dhutchinson@usgs.gov","middleInitial":"R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":538642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klitgord, Kim D.","contributorId":82307,"corporation":false,"usgs":true,"family":"Klitgord","given":"Kim","email":"","middleInitial":"D.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":538643,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Trehu, Anne M.","contributorId":49884,"corporation":false,"usgs":false,"family":"Trehu","given":"Anne","email":"","middleInitial":"M.","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":538644,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McBride, John H.","contributorId":80535,"corporation":false,"usgs":true,"family":"McBride","given":"John","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":538645,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nelson, Kim","contributorId":92810,"corporation":false,"usgs":false,"family":"Nelson","given":"Kim","affiliations":[],"preferred":false,"id":538646,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70016055,"text":"70016055 - 1990 - The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault","interactions":[],"lastModifiedDate":"2023-10-26T11:27:40.45661","indexId":"70016055","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault","docAbstract":"<p>The Pasadena earthquake (ML = 4.9) occurred on 3 December 1988, at a depth of 16 km. The hypocenters of the earthquake and its aftershocks define a east-northeast striking, steeply northwest-dipping surface that projects up to the active surficial trace of the Raymond fault. One of the nodal planes of the focal mechanism of the earthquake parallels the Raymond fault with left-lateral strike-slip movement on that plane, and is consistent with geomorphic and paleoseismic evidence that the Raymond fault is dominantly a left-lateral strike-slip fault. The existence of a component of sinistral slip along the Raymond fault had been suspected prior to the earthquake, but the northward dip of the fault and the prominent scarp along the western portion of its trace had led most workers to conclude that slip along the fault was dominantly reverse.</p>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0800020474","usgsCitation":"Jones, L., Sieh, K., Hauksson, E., and Hutton, L., 1990, The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault: Bulletin of the Seismological Society of America, v. 80, no. 2, p. 474-482, https://doi.org/10.1785/BSSA0800020474.","productDescription":"9 p.","startPage":"474","endPage":"482","numberOfPages":"9","costCenters":[],"links":[{"id":479841,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://authors.library.caltech.edu/37066/","text":"External Repository"},{"id":223244,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Pasadena","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -118.23169701853942,\n              34.241484962423115\n            ],\n            [\n              -118.23169701853942,\n              34.081260776034796\n            ],\n            [\n              -118.02844994822699,\n              34.081260776034796\n            ],\n            [\n              -118.02844994822699,\n              34.241484962423115\n            ],\n            [\n              -118.23169701853942,\n              34.241484962423115\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"80","issue":"2","noUsgsAuthors":false,"publicationDate":"1990-04-01","publicationStatus":"PW","scienceBaseUri":"505ba653e4b08c986b321067","contributors":{"authors":[{"text":"Jones, L.M.","contributorId":61433,"corporation":false,"usgs":true,"family":"Jones","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":372436,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sieh, K.E.","contributorId":107303,"corporation":false,"usgs":true,"family":"Sieh","given":"K.E.","affiliations":[],"preferred":false,"id":372438,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hauksson, E.","contributorId":10932,"corporation":false,"usgs":true,"family":"Hauksson","given":"E.","affiliations":[],"preferred":false,"id":372435,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hutton, L.K.","contributorId":66266,"corporation":false,"usgs":true,"family":"Hutton","given":"L.K.","email":"","affiliations":[],"preferred":false,"id":372437,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70015819,"text":"70015819 - 1990 - Rhyolitic calderas of the Yukon-Tanana Terrane, east central Alaska: volcanic remnants of a mid-Cretaceous magmatic arc","interactions":[],"lastModifiedDate":"2018-10-24T12:27:10","indexId":"70015819","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Rhyolitic calderas of the Yukon-Tanana Terrane, east central Alaska: volcanic remnants of a mid-Cretaceous magmatic arc","docAbstract":"<p>Four large but poorly exposed rhyolitic calderas are present in the Yukon-Tanana terrane (YTT) in east central Alaska. At least two are mid-Cretaceous in age (~93 Ma). Similar volcanic rocks, the South Fork Volcanics, occur northeast of the Tintina fault in Yukon Territory. Evidence for the calderas consists of thick deposits of devitrified crystal- and lithic-rich densely welded tuff, interpreted as caldera fill, associated with lava domes or shallow intrusive rocks. Coeval outflow sheets have been largely stripped by erosion. The calderas are preserved within a northeast trending depression extending across the axis of the elongate mid-Cretaceous plutonic province. Trace element abundances in andesites and rhyolites associated with the caldera structures are similar to those of volcanic and plutonic rocks of subduction-related magmatic arcs developed on continental crust and thus are suggestive of formation in such an environment. Late Cretaceous and early Tertiary igneous rocks in the YTT near the calderas are interpreted to have been emplaced in a more extensional setting when the subduction-related magmatic front was farther oceanward.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/JB095iB13p21451","issn":"01480227","usgsCitation":"Bacon, C., Foster, H., and Smith, J., 1990, Rhyolitic calderas of the Yukon-Tanana Terrane, east central Alaska: volcanic remnants of a mid-Cretaceous magmatic arc: Journal of Geophysical Research, v. 95, no. B13, p. 21451-21461, https://doi.org/10.1029/JB095iB13p21451.","productDescription":"11 p.","startPage":"21451","endPage":"21461","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":223432,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","volume":"95","issue":"B13","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505aad4ee4b0c8380cd86e9b","contributors":{"authors":[{"text":"Bacon, C. R. 0000-0002-2165-5618","orcid":"https://orcid.org/0000-0002-2165-5618","contributorId":21522,"corporation":false,"usgs":true,"family":"Bacon","given":"C. R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":false,"id":371844,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, H.L.","contributorId":34894,"corporation":false,"usgs":true,"family":"Foster","given":"H.L.","email":"","affiliations":[],"preferred":false,"id":371845,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, James G.","contributorId":44534,"corporation":false,"usgs":true,"family":"Smith","given":"James G.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":false,"id":371846,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1007566,"text":"1007566 - 1990 - Growth and equilibrium in sea otter populations","interactions":[],"lastModifiedDate":"2024-03-01T16:16:22.270247","indexId":"1007566","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2158,"text":"Journal of Animal Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Growth and equilibrium in sea otter populations","docAbstract":"<p><span>(1) Counts through time were compiled for five sea otter (<i>Enhydra lutris</i>) populations in the north-east Pacific Ocean that were below equilibrium density: Attu Island, south-east Alaska, British Columbia, Washington State, and central California. Similar data were obtained from the equilibrium density population at Amchitka Island in 1971 and 1986. </span></p><p><span>(2) Shorelines of Attu and Amchitka islands each were divided into forty-five segments, within which lineal (length of shore at mean higher high water) and areal (mean higher high water to the 10-fathom (18.3-m) depth contour) measures were made of the amount of habitat. </span></p><p><span>(3) Rate of increase for the four northern populations was 17-20% year-1. Density- or size-dependent changes in rate of increase could not be demonstrated for any of these populations. The California population, in contrast, has undergone three apparent growth phases: the early 1900s to the mid-1970s when it increased about 5% year-1; the mid-1970s to the mid-1980s when it declined about 5% year-1; and the mid-1980s to 1988 when it increased about 7% year-1. An exponential growth model accounted for 92-98% of the variation in counts through time in all cases. </span></p><p><span>(4) Population increase at Attu Island was achieved largely by range expansion as opposed to increased density. Range expansion in lineal and areal habitat occurred at 11% and 13% year-1, respectively; neither rate was lower (P &gt; 0.25) than the observed rate of increase in numbers of animals counted. </span></p><p><span>(5) Despite similarities in island size and physical environment, the most conservative estimates of population density at Amchitka Island were &gt; 3 X greater than maximum density estimates for Attu Island. </span></p><p><span>(6) Surveys of Amchitka Island from the mid-1930s through the mid-1980s indicate that the population increased to a peak in the 1940s; declined abruptly thereafter; and subsequently increased to a new and higher equilibrium in the 1960s, where it has since remained. </span></p><p><span>(7) These population data, together with information on sea otter foraging and benthic community structure at Attu and Amchitka islands, suggest that multiple population equilibria exist in this system, emanating from complex trophic interactions low in the food web. I hypothesize that the lower population equilibrium is achieved largely or exclusively on an invertebrate diet consisting principally of herbivorous sea urchins. When unregulated by sea otter predation, the rocky benthos is deforested by sea urchin grazing. As growing otter populations compete increasingly for food, grazing intensity declines and the system shifts to one dominated by kelp beds, in turn leading to increased production, a shift in habitat structure, and population increases of kelp bed fishes. Apparently this new food resource elevates the sea otter population to a higher and more stable equilibrium.</span></p>","language":"English","publisher":"British Ecological Society","doi":"10.2307/4870","usgsCitation":"Estes, J.A., 1990, Growth and equilibrium in sea otter populations: Journal of Animal Ecology, v. 59, p. 385-400, https://doi.org/10.2307/4870.","productDescription":"16 p.","startPage":"385","endPage":"400","numberOfPages":"16","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":129970,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"59","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a8fe4b07f02db654b75","contributors":{"authors":[{"text":"Estes, J. A.","contributorId":53319,"corporation":false,"usgs":true,"family":"Estes","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":315638,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70015821,"text":"70015821 - 1990 - Precambrian terrane of north-central Wisconsin: an aeromagnetic perspective","interactions":[],"lastModifiedDate":"2023-09-21T17:33:00.578995","indexId":"70015821","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1168,"text":"Canadian Journal of Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Precambrian terrane of north-central Wisconsin: an aeromagnetic perspective","docAbstract":"<p><span>A shaded relief magnetic map covering most of the region of exposed Precambrian rocks of north-central Wisconsin shows the structural grain and many lithologic units with clarity and comprehensive detail. The area includes part of the volcanic sequence of the Keweenawan Supergroup south of Lake Superior, the southern margin of the Archean Superior Province, the accreted island-arc terranes of the Penokean Orogen, and the Wolf River batholith. Numerous dikes are evident in the shaded relief, some being more than 200 km in length. Many of the longer dikes are reversely magnetized Keweenawan diabase associated with early extension of the Midcontinent Rift; some apparently were intruded along preexisting faults. A northwest system of dikes and faults indicated by the shaded relief map may be related to later stages of Keweenawan rifting. The Wolf River batholith is characterized by low magnetic relief associated with the predominant granitoids but includes circular plutons of highly magnetic anorthosite and a large area of magnetic rock having a signature different from the mapped anorthosite bodies. A fault bounding the western side of the batholith is paralleled by an apparent system of faults or dikes in the older terrane to the west. The magnetic map covering the Wisconsin magmatic terranes and the Archean Superior Province margin to the north is dominated by east-northeast-trending Penokean rocks. Large units of magnetic mafic rocks and less magnetic granitoid rocks are cut by a system of well-defined northeast shear zones and a more easterly trending, possibly younger set of faults, some of which contain dikes along parts of their lengths. Although the sutures bounding the magmatic terranes generally follow the magnetic trends, they do not have distinctive magnetic signatures.</span></p>","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/e90-156","issn":"00084077","usgsCitation":"King, E.R., 1990, Precambrian terrane of north-central Wisconsin: an aeromagnetic perspective: Canadian Journal of Earth Sciences, v. 27, no. 11, p. 1472-1477, https://doi.org/10.1139/e90-156.","productDescription":"6 p.","startPage":"1472","endPage":"1477","costCenters":[],"links":[{"id":223434,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Lake Superior","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -87.66671060976584,\n              44.3610017587431\n            ],\n            [\n              -87.66671060976584,\n              46.373762217927776\n            ],\n            [\n              -92.90108864423792,\n              46.373762217927776\n            ],\n            [\n              -92.90108864423792,\n              44.3610017587431\n            ],\n            [\n              -87.66671060976584,\n              44.3610017587431\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"27","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a8107e4b0c8380cd7b321","contributors":{"authors":[{"text":"King, E. R.","contributorId":93482,"corporation":false,"usgs":true,"family":"King","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":371848,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70015883,"text":"70015883 - 1990 - Patrick Draw field, Wyoming - 1 seismic expression of subtle strat trap in Upper Cretaceous Almond","interactions":[],"lastModifiedDate":"2018-02-19T17:33:52","indexId":"70015883","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2941,"text":"Oil & Gas Journal","printIssn":"0030-1388","active":true,"publicationSubtype":{"id":10}},"title":"Patrick Draw field, Wyoming - 1 seismic expression of subtle strat trap in Upper Cretaceous Almond","docAbstract":"The east flank of the Rock Springs uplift and the adjacent Wamsutter arch contain several large hydrocarbon accumulations. Among these accumulations are Patrick Draw field, which produces oil and gas from a stratigraphic trap in the Upper Cretaceous Almond formation, and Table Rock field, a faulted anticlinal trap that produces gas from multiple Tertiary, Mesozoic, and Paleozoic reservoirs. The principal petroleum reservoir in Patrick Draw field is a sandstone at the top of the Almond formation. This sandstone attains a maximum thickness of 35ft and piches out westward into relatively impervious silt-stone and shale that constitute the trapping facies. The objective of this investigation is to determine whether or not the stratigraphic trap at Patrick Draw can be detected on a 12 fold, common depth point seismic profile acquired by Forest Oil Corp. and its partners. The seismic line is 18.5 miles long and crosses Patrick Draw and Table Rock fields.","language":"English","publisher":"PennWell Corporation","publisherLocation":"Tulsa, OK","usgsCitation":"Ryder, R., Lee, M.W., Agena, W.F., and Anderson, R.C., 1990, Patrick Draw field, Wyoming - 1 seismic expression of subtle strat trap in Upper Cretaceous Almond: Oil & Gas Journal, v. 88, no. 51, p. 54-57.","productDescription":"4 p.","startPage":"54","endPage":"57","costCenters":[],"links":[{"id":222768,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":351793,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.ogj.com/articles/print/volume-88/issue-51/in-this-issue/exploration/patrick-draw-field-wyoming-1-seismic-expression-of-subtle-strat-trap-in-upper-cretaceous-almond.html"}],"country":"United States","state":"Wyoming","volume":"88","issue":"51","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8b14e4b08c986b317591","contributors":{"authors":[{"text":"Ryder, Robert T.","contributorId":77918,"corporation":false,"usgs":true,"family":"Ryder","given":"Robert T.","affiliations":[],"preferred":false,"id":372001,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, Myung W. mlee@usgs.gov","contributorId":779,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","email":"mlee@usgs.gov","middleInitial":"W.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":371999,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Agena, Warren F. wagena@usgs.gov","contributorId":3181,"corporation":false,"usgs":true,"family":"Agena","given":"Warren","email":"wagena@usgs.gov","middleInitial":"F.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":372000,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anderson, Robert C.","contributorId":97899,"corporation":false,"usgs":true,"family":"Anderson","given":"Robert","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":372002,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70015763,"text":"70015763 - 1990 - Chemistry and origin of minor and trace elements in selected vitrinite concentrates from bituminous and anthracitic coals","interactions":[],"lastModifiedDate":"2024-02-23T00:49:29.715162","indexId":"70015763","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Chemistry and origin of minor and trace elements in selected vitrinite concentrates from bituminous and anthracitic coals","docAbstract":"<div id=\"preview-section-abstract\"><div id=\"abstracts\" class=\"Abstracts u-font-serif text-s\"><div id=\"aep-abstract-id4\" class=\"abstract author\"><div id=\"aep-abstract-sec-id5\"><p><br></p><p>Organic and inorganic affinities were determined by comparing the elemental concentrations in the vitrinite concentrates to the concentrations in the companion whole coals. The ratios of these concentrations for 33 selected elements are shown in Figure 1. Ratios greater than 1 indicate organic affinity, and ratios less than 1 indicate inorganic affinity.</p><p>Br and W generally showed organic affinity in all samples in this study. In the nine samples from the eastern United States (Fig. 1A-C) less than one-fourth of the trace elements show organic affinity compared to nearly one-half for the three English and Australian samples (Fig. 1D). The elements that generally show organic affinity in the non-U.S.A. samples studied include As, Cs, Hf, and Ni, which have generally inorganic affinities in the U.S.A. samples, and Cr, Sb, Se, and U, which have mixed (both organic and inorganic) affinities, in the U.S.A. coals studied, has an inorganic affinity in the English coals studied. B shows organic affinity in the samples from the Illinois basin (Fig. 1C). For the samples studied, Ba shows organic affinity in the Appalachian basin bituminous coals (Fig. 1B), inorganic affinity in the Illinois basin coals, and overall mixed affinities. In all the samples studied, Cu, Mn, Na, Sr, Ta, V, and Zn show mixed affinities, and A1, Co, Eu, Fe, Ga, K, La, Mg, Sc, Si, Th, Ti, and Ub have generally inorganic affinity.</p></div></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0166-5162(90)90035-W","issn":"01665162","usgsCitation":"Palmer, C., and Lyons, P., 1990, Chemistry and origin of minor and trace elements in selected vitrinite concentrates from bituminous and anthracitic coals: International Journal of Coal Geology, v. 16, no. 1-3, p. 189-192, https://doi.org/10.1016/0166-5162(90)90035-W.","productDescription":"4 p.","startPage":"189","endPage":"192","numberOfPages":"4","costCenters":[],"links":[{"id":224278,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5a5e4b0c8380cd4c339","contributors":{"authors":[{"text":"Palmer, C.A.","contributorId":81894,"corporation":false,"usgs":true,"family":"Palmer","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":371710,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lyons, P.C.","contributorId":87285,"corporation":false,"usgs":true,"family":"Lyons","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":371711,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016096,"text":"70016096 - 1990 - Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data","interactions":[],"lastModifiedDate":"2023-10-26T11:06:51.429084","indexId":"70016096","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data","docAbstract":"<p>To investigate near-surface site effects in granite rock, we drilled 300-m-deep boreholes at two sites which are collocated with stations from the digital array at Anza, California. The first borehole was sited at station KNW (Keenwild fire station), which is located along a ridge line about 8.7 km east of the San Jacinto Fault zone. Station PFO (Piñon Flat Observatory), chosen for the second site, is another 6 km further to the east of station KNW and is located on a gently sloping hillside. We logged each borehole for P- and S-wave velocities, as well as for crack density and orientation.</p>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0800040807","usgsCitation":"Fletcher, J.B., Fumal, T., Liu, H., and Carroll, L., 1990, Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data: Bulletin of the Seismological Society of America, v. 80, no. 4, p. 807-831, https://doi.org/10.1785/BSSA0800040807.","productDescription":"25 p.","startPage":"807","endPage":"831","numberOfPages":"25","costCenters":[],"links":[{"id":222991,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -116.82306309081514,\n              33.64775282269589\n            ],\n            [\n              -116.82306309081514,\n              33.47954708489645\n            ],\n            [\n              -116.54979434156269,\n              33.47954708489645\n            ],\n            [\n              -116.54979434156269,\n              33.64775282269589\n            ],\n            [\n              -116.82306309081514,\n              33.64775282269589\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"80","issue":"4","noUsgsAuthors":false,"publicationDate":"1990-08-01","publicationStatus":"PW","scienceBaseUri":"505a640be4b0c8380cd72843","contributors":{"authors":[{"text":"Fletcher, Joe B.","contributorId":8850,"corporation":false,"usgs":true,"family":"Fletcher","given":"Joe","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":372538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fumal, T.","contributorId":46692,"corporation":false,"usgs":true,"family":"Fumal","given":"T.","affiliations":[],"preferred":false,"id":372540,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, Hsi-Ping","contributorId":59944,"corporation":false,"usgs":true,"family":"Liu","given":"Hsi-Ping","affiliations":[],"preferred":false,"id":372541,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carroll, L.C.","contributorId":28373,"corporation":false,"usgs":true,"family":"Carroll","given":"L.C.","email":"","affiliations":[],"preferred":false,"id":372539,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016373,"text":"70016373 - 1990 - Sediment movement along the U.S. east coast continental shelf-I. Estimates of bottom stress using the Grant-Madsen model and near-bottom wave and current measurements","interactions":[],"lastModifiedDate":"2023-11-30T00:45:28.676271","indexId":"70016373","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Sediment movement along the U.S. east coast continental shelf-I. Estimates of bottom stress using the Grant-Madsen model and near-bottom wave and current measurements","docAbstract":"<p>Bottom stress is calculated for several long-term time-series observations, made on the U.S. east coast continental shelf during winter, using the wave-current interaction and moveable bed models of Grant and Madsen (1979, Journal of Geophysical Research, 84, 1797-1808; 1982, Journal of Geophysical Research, 87, 469-482). The wave and current measurements were obtained by means of a bottom tripod system which measured current using a Savonius rotor and vane and waves by means of a pressure sensor. The variables were burst sampled about 10% of the time. Wave energy was reasonably resolved, although aliased by wave groupiness, and wave period was accurate to 1-2 s during large storms. Errors in current speed and direction depend on the speed of the mean current relative to the wave current. In general, errors in bottom stress caused by uncertainties in measured current speed and wave characteristics were 10-20%. </p><p>During storms, the bottom stress calculated using the Grant-Madsen models exceeded stress computed from conventional drag laws by a factor of about 1.5 on average and 3 or more during storm peaks. Thus, even in water as deep as 80 m, oscillatory near-bottom currents associated with surface gravity waves of period 12 s or longer will contribute substantially to bottom stress. Given that the Grant-Madsen model is correct, parameterizations of bottom stress that do not incorporate wave effects will substantially underestimate stress and sediment transport in this region of the continental shelf.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0278-4343(90)90048-Q","issn":"02784343","usgsCitation":"Lyne, V., Butman, B., and Grant, W., 1990, Sediment movement along the U.S. east coast continental shelf-I. Estimates of bottom stress using the Grant-Madsen model and near-bottom wave and current measurements: Continental Shelf Research, v. 10, no. 5, p. 397-428, https://doi.org/10.1016/0278-4343(90)90048-Q.","productDescription":"32 p.","startPage":"397","endPage":"428","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":223566,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Georges Bank, Mid-Atlantic Bight","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -76,\n              36\n            ],\n            [\n              -59.58984374999999,\n              36\n            ],\n            [\n              -59.58984374999999,\n              43\n            ],\n            [\n              -76,\n              43\n            ],\n            [\n              -76,\n              36\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"10","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b899ce4b08c986b316e40","contributors":{"authors":[{"text":"Lyne, V.D.","contributorId":78473,"corporation":false,"usgs":true,"family":"Lyne","given":"V.D.","email":"","affiliations":[],"preferred":false,"id":373312,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Butman, B.","contributorId":85580,"corporation":false,"usgs":true,"family":"Butman","given":"B.","email":"","affiliations":[],"preferred":false,"id":373313,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Grant, W.D.","contributorId":11764,"corporation":false,"usgs":true,"family":"Grant","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":373311,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016040,"text":"70016040 - 1990 - Climate factor for small-basin flood frequency","interactions":[],"lastModifiedDate":"2013-02-19T14:18:18","indexId":"70016040","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3718,"text":"Water Resources Bulletin","printIssn":"0043-1370","active":true,"publicationSubtype":{"id":10}},"title":"Climate factor for small-basin flood frequency","docAbstract":"A climate factor, CT, (T = 2-, 25-, and 100-year recurrence intervals) that delineates regional trends in small-basin flood frequency was derived using data from 71 long-term rainfall record sites. Values of CT at these sites were developed by a regression analysis that related rainfall-runoff model estimates of T-year floods to a sample set of 50 model calibrations. CT was regionalized via kriging to develop maps depicting its geographic variation for a large part of the United States east of the 105th meridian. Kriged estimates of CT and basin-runoff characteristics were used to compute regionalized T-year floods for 200 small drainage basins. Observed T-year flood estimates also were developed for these sites. Regionalized floods are shown to account for a large percentage of the variability in observed flood estimates with coefficients of determination ranging from 0.89 for 2-year floods to 0.82 for 100-year floods. The relative importance of the factors comprising regionalized flood estimates is evaluated in terms of scale (size of drainage area), basin-runoff characteristics (rainfall-runoff model parameters), and climate (CT).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.1990.tb01395.x","issn":"00431370","usgsCitation":"Lichty, R., and Karlinger, M., 1990, Climate factor for small-basin flood frequency: Water Resources Bulletin, v. 26, no. 4, p. 577-586, https://doi.org/10.1111/j.1752-1688.1990.tb01395.x.","startPage":"577","endPage":"586","numberOfPages":"10","costCenters":[],"links":[{"id":222988,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267740,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.1990.tb01395.x"}],"volume":"26","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"5059f651e4b0c8380cd4c6b4","contributors":{"authors":[{"text":"Lichty, R.W.","contributorId":46987,"corporation":false,"usgs":true,"family":"Lichty","given":"R.W.","affiliations":[],"preferred":false,"id":372406,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karlinger, M.R.","contributorId":95039,"corporation":false,"usgs":true,"family":"Karlinger","given":"M.R.","affiliations":[],"preferred":false,"id":372407,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016431,"text":"70016431 - 1990 - Geophysical constraints on Washington convergent margin structure","interactions":[],"lastModifiedDate":"2024-05-24T15:28:32.02146","indexId":"70016431","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Geophysical constraints on Washington convergent margin structure","docAbstract":"<p><span>Gravity and magnetic maps of western Washington reveal the lateral structure and fabric of the Washington Coast Range, Puget Basin, and southern Washington Cascade Range. The magnetic and gravity maps show large amplitude positive anomalies associated with the shallow but largely buried section of Washington Coast Range mafic rocks which are separated by negative anomalies over deep sedimentary basins. The positive anomalies indicate that the Coast Range mafic basement extends farther east than previously thought, at least as far east as the longitude of Seattle. Linear and steep gravity and magnetic gradients indicate many unmapped, often buried faults in the Washington Coast Range Province. Magnetic highs are also associated with mapped batholiths in the Cascade arc. Several magnetic highs observed east of the Coast Range rocks and west of these batholiths may be associated with buried Tertiary plutons or ophiolites. Two-dimensional gravity and magnetic modeling constrained with geological and other geophysical data indicate that the Coast Range Province rocks are about 1 km thick at the coast, thickening to as much as 30 km near their postulated eastern edge. A maximum boundary on the average density of the upper 15–20 km of the rocks that compose the Coast Range Province of 2920 kg/m</span><sup>3</sup><span>&nbsp;was established by the modeling, suggesting a composition largely of basalt and gabbro with little interbedded sediments. Under these rocks may be mantle or a subduction complex composed of dense mafic, ultramafic, and sedimentary rocks like that proposed to underlie Vancouver Island. Previous gravity models of the Washington margin include lower densities for the proposed subduction complex than for Vancouver Island, suggesting a lower component of mafic and ultramafic rocks than the rocks underlying Vancouver Island. However, my Washington model requires that the proposed subduction complex be more dense than the trench sediments and, therefore, that material denser than sediments be incorporated within it. The absence of continental mantle and the modeled wedge shape of the Coast Range Province upper crust suggest that erosion of the bottom of the overriding plate by subduction processes may have occurred.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB095iB12p19533","issn":"01480227","usgsCitation":"Finn, C.A., 1990, Geophysical constraints on Washington convergent margin structure: Journal of Geophysical Research Solid Earth, v. 95, no. B12, p. 19533-19546, https://doi.org/10.1029/JB095iB12p19533.","productDescription":"14 p.","startPage":"19533","endPage":"19546","costCenters":[],"links":[{"id":222972,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -120.99289441326454,\n              48.94625600979734\n            ],\n            [\n              -129.5979382121656,\n              48.94625600979734\n            ],\n            [\n              -129.5979382121656,\n              45.56775656606118\n            ],\n            [\n              -120.99289441326454,\n              45.56775656606118\n            ],\n            [\n              -120.99289441326454,\n              48.94625600979734\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"95","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a2814e4b0c8380cd59deb","contributors":{"authors":[{"text":"Finn, Carol A. 0000-0002-6178-0405 cfinn@usgs.gov","orcid":"https://orcid.org/0000-0002-6178-0405","contributorId":1326,"corporation":false,"usgs":true,"family":"Finn","given":"Carol","email":"cfinn@usgs.gov","middleInitial":"A.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":373492,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70186211,"text":"70186211 - 1990 - Seasonal movements of adult female polar bears in the Bering and Chukchi seas","interactions":[],"lastModifiedDate":"2018-05-06T11:03:59","indexId":"70186211","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":978,"text":"Bears: Their Biology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal movements of adult female polar bears in the Bering and Chukchi seas","docAbstract":"<p><span>Ten adult female polar bears (<i>Ursus maritimus</i>) were fitted with satellite telemetry collars during March 1986 in the Kotzebue Sound area of the Chukchi Sea. During March-April 1987, 2 of these bears were refitted with satellite telemetry collars and an additional 10 adult females were collared in the northern Bering and eastern Chukchi seas. Data for 1,560 point locations recorded through May 1988 indicated that female polar bears in the Bering and Chukchi seas were resident in western Alaskan waters from November through March, then moved northward with the receding pack ice during April and May. They remained in the northern and northwestern Chukchi Sea during June through September, often adjacent to the Soviet coastline. Satellite telemetry data indicated that 4 females marked in Alaskan waters of the Chukchi Sea apparently denned in the vicinity of Wrangel Island during winter 1987/1988. Denning in American territory of bears marked in the Chukchi and Bering seas has not been documented using satellite telemetry data. Some polar bears moved from the Chukchi Sea into the western Beaufort Sea during summer and fall, then returned to the Chukchi and Bering seas the following winter. Movements of bears from the Chukchi Sea into the central or eastern Beaufort Sea were not documented through spring 1988. These data document that polar bears occuring in the Bering and Chukchi seas are shared internationally between the United States and the Soviet Union.</span></p>","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"A selection of papers from the eighth international conference on bear research and management","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"Eighth International Conference on Bear Research and Management","conferenceDate":"February 1989","conferenceLocation":"Victoria, BC","language":"English","publisher":"International Association for Bear Research and Management","doi":"10.2307/3872922","usgsCitation":"Garner, G.W., Knick, S.T., and Douglas, D., 1990, Seasonal movements of adult female polar bears in the Bering and Chukchi seas: Bears: Their Biology and Management, v. 8, p. 219-226, https://doi.org/10.2307/3872922.","productDescription":"8 p.","startPage":"219","endPage":"226","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":338975,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, United States","state":"Alaska","otherGeospatial":"Bering sea, Chukchi sea","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -183.603515625,\n              58.26328705248601\n            ],\n            [\n              -152.9296875,\n              58.26328705248601\n            ],\n            [\n              -152.9296875,\n              72.65958846878621\n            ],\n            [\n              -183.603515625,\n              72.65958846878621\n            ],\n            [\n              -183.603515625,\n              58.26328705248601\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58df6acbe4b02ff32c6aeaa1","contributors":{"authors":[{"text":"Garner, Gerald W.","contributorId":149918,"corporation":false,"usgs":false,"family":"Garner","given":"Gerald","email":"","middleInitial":"W.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":687885,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knick, Steven T. 0000-0003-4025-1704 steve_knick@usgs.gov","orcid":"https://orcid.org/0000-0003-4025-1704","contributorId":159,"corporation":false,"usgs":true,"family":"Knick","given":"Steven","email":"steve_knick@usgs.gov","middleInitial":"T.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":687886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Douglas, David C. 0000-0003-0186-1104 ddouglas@usgs.gov","orcid":"https://orcid.org/0000-0003-0186-1104","contributorId":150115,"corporation":false,"usgs":true,"family":"Douglas","given":"David C.","email":"ddouglas@usgs.gov","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":687887,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016090,"text":"70016090 - 1990 - Chronologic and isotopic framework for early Proterozoic crustal evolution in the eastern Mojave Desert region, SE California","interactions":[],"lastModifiedDate":"2024-05-24T16:34:04.68862","indexId":"70016090","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Chronologic and isotopic framework for early Proterozoic crustal evolution in the eastern Mojave Desert region, SE California","docAbstract":"<p><span>The Early Proterozoic geologic evolution of the eastern Mojave Desert region, as defined by characteristics of its supracrustal rocks, granitoids, metamorphism, structural history, and Pb and Nd isotopic signature, contrasts sharply with other Proterozoic provinces of the southwestern United States. The oldest supracrustal rocks of the Mojave Desert region contain zircons over 2.0 Ga, corroborating Nd isotopic evidence for a much older crust here than elsewhere in the southwestern United States. Granitoids widely emplaced within these supracrustal rocks range from 1.76 to 1.64 Ga. The earlier plutons and surrounding supracrustal rocks were metamorphosed to granulite and high amphibolite facies throughout the province at about 1705 Ma in a migmatite-producing event that we term (informally) the Ivanpah orogeny. Subsequent granitoids, emplaced from 1.69 to 1.67 Ga, were voluminous along a north trending belt in the middle of the Mojave province. Younger plutons were emplaced at about 1.66 Ga in several places and at about 1.64 Ga along the extreme southern part of the province. Commonalities between the Proterozoic evolutions of the Mojave and Arizona crustal provinces do not conclusively establish the time that the provinces were juxtaposed; the data only suggest that the juxtaposition occurred between about 1.76 and 1.64 Ga.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB095iB12p20133","issn":"01480227","usgsCitation":"Wooden, J.L., and Miller, D., 1990, Chronologic and isotopic framework for early Proterozoic crustal evolution in the eastern Mojave Desert region, SE California: Journal of Geophysical Research, v. 95, no. B12, p. 20133-20146, https://doi.org/10.1029/JB095iB12p20133.","productDescription":"14 p.","startPage":"20133","endPage":"20146","costCenters":[],"links":[{"id":222938,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"95","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059f5f2e4b0c8380cd4c4dd","contributors":{"authors":[{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":372516,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, D. M. 0000-0003-3711-0441","orcid":"https://orcid.org/0000-0003-3711-0441","contributorId":104422,"corporation":false,"usgs":true,"family":"Miller","given":"D. M.","affiliations":[],"preferred":false,"id":372517,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016527,"text":"70016527 - 1990 - Thermal history of rocks in southern San Joaquin Valley, California: evidence from fission-track analysis","interactions":[],"lastModifiedDate":"2023-01-19T15:41:06.80496","indexId":"70016527","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Thermal history of rocks in southern San Joaquin Valley, California: evidence from fission-track analysis","docAbstract":"<p>The theory of the fission-track method and its application to sedimentary basin analysis is illustrated by a case study in the southern San Joaquin Valley, California. Fission tracks provide a powerful tool for studying the thermal history of sedimentary basins because the two minerals most commonly used in fission-track studies, apatite and zircon, occur as detrital constituents in many sedimentary rocks, and their annealing temperatures span the main temperature range for oil generation. Fission tracks also provide information on the sedimentation record and provenance of rocks in a basin.</p><p>We have used fission-track analysis to study the thermal and depositional history of the subsurface Tertiary sedimentary rocks on both sides of the active White Wolf reverse fault in the southern San Joaquin Valley. The distinctly different thermal histories of the rocks in the two structural blocks are clearly reflected in the apatite fission-track data, which suggest that rocks in the rapidly subsiding basin northwest of the fault have been near their present temperature for only about 1 m.y. compared with about 10 m.y. for rocks southeast of the fault. These estimates of heating time agree with previous estimates for these rocks.</p><p>Zircon fission-track data indicate that the Tertiary sediments were derived from parent rocks of more than one age. However, from at least the Eocene to late Miocene or Pliocene, the major sediment source was rocks related to the youngest Sierra Nevada Mesozoic intrusive complexes, which are presently exposed east and south of the southern San Joaquin Valley.</p>","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/0C9B21F5-1710-11D7-8645000102C1865D","usgsCitation":"Naeser, N.D., Naeser, C.W., and McCulloh, T.H., 1990, Thermal history of rocks in southern San Joaquin Valley, California: evidence from fission-track analysis: American Association of Petroleum Geologists Bulletin, v. 74, no. 1, p. 13-29, https://doi.org/10.1306/0C9B21F5-1710-11D7-8645000102C1865D.","productDescription":"17 p.","startPage":"13","endPage":"29","numberOfPages":"17","costCenters":[],"links":[{"id":223528,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"southern San Joaquin Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -119.25,\n              35.25\n            ],\n            [\n              -119.25,\n              34.875\n            ],\n            [\n              -118.875,\n              34.875\n            ],\n            [\n              -118.875,\n              35.25\n            ],\n            [\n              -119.25,\n              35.25\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"74","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb223e4b08c986b32560c","contributors":{"authors":[{"text":"Naeser, Nancy D.","contributorId":82753,"corporation":false,"usgs":true,"family":"Naeser","given":"Nancy","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":373812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Naeser, Charles W.","contributorId":76281,"corporation":false,"usgs":true,"family":"Naeser","given":"Charles","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":373811,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McCulloh, Thane H.","contributorId":100450,"corporation":false,"usgs":true,"family":"McCulloh","given":"Thane","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":373813,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016174,"text":"70016174 - 1990 - Variations in the styles of erosion along the Florida Escarpment, eastern Gulf of Mexico","interactions":[],"lastModifiedDate":"2017-10-04T19:14:53","indexId":"70016174","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Variations in the styles of erosion along the Florida Escarpment, eastern Gulf of Mexico","docAbstract":"GLORIA sidescan sonographs and Seabeam bathymetric data show morphological differences along the Florida Escarpment which reflect that different erosional styles have been active along different parts of this carbonate platform edge. The northern half of the escarpment is cut by numerous small ravines spaced 1-5 km apart. Its southern half is deeply incised by large box canyons that have flat floors and steep headwalls. The northern half of the escarpment is covered by Cenozoic-aged sediments, and erosion appears to be limited to this Cenozoic cover. An apron of this eroded material is accumulating along the base of this half of the escarpment, extending as much as 30 km from its base. South of 27??N, active erosion of older strata of the escarpment is shown by talus deposits of Lower Cretaceous limestone that occur at the heads of box canyons. The box canyons are not evenly distributed, but instead are most abundant where two basins that underlie the Florida Platform intersect the escarpment. Pleistocene-aged sediments eroded from the slope above the escarpment are funnelled through small valleys into the heads of the box canyons. The smooth headwalls of the box canyons suggest that downslope transport of the material from the slope above the escarpment does little to erode the escarpment. Instead, erosion triggered by dissolution of the carbonate rocks by acidic brines that seep out of the escarpment is the proposed mechanism of escarpment retreat. The concentration of the erosion at the heads of the box canyons may indicate sites where the platform rocks are more intensely fractured, thus enhancing permeability and flow of brines. The concentration of box canyons in the escarpment sections adjacent to sedimentary basins beneath the platform may reflect regional differences in the geology and hydrology of the platform. ?? 1990.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine and Petroleum Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0264-8172(90)90003-Y","issn":"02648172","usgsCitation":"Twichell, D., Parson, L., and Paull, C.K., 1990, Variations in the styles of erosion along the Florida Escarpment, eastern Gulf of Mexico: Marine and Petroleum Geology, v. 7, no. 3, p. 253-266, https://doi.org/10.1016/0264-8172(90)90003-Y.","productDescription":"14 p.","startPage":"253","endPage":"266","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":223408,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Florida Escarpment, Gulf of Mexico","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -94.9658203125,\n              23.079731762449878\n            ],\n            [\n              -81.5185546875,\n              23.079731762449878\n            ],\n            [\n              -81.5185546875,\n              31.16580958786196\n            ],\n            [\n              -94.9658203125,\n              31.16580958786196\n            ],\n            [\n              -94.9658203125,\n              23.079731762449878\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"7","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc190e4b08c986b32a64d","contributors":{"authors":[{"text":"Twichell, D.C.","contributorId":84304,"corporation":false,"usgs":true,"family":"Twichell","given":"D.C.","affiliations":[],"preferred":false,"id":372736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parson, L.M.","contributorId":69156,"corporation":false,"usgs":true,"family":"Parson","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":372735,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paull, C. K.","contributorId":86845,"corporation":false,"usgs":false,"family":"Paull","given":"C.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":372737,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70015909,"text":"70015909 - 1990 - Crustal structure of the northwestern Basin and Range Province from the 1986 Program for Array Seismic Studies of the Continental Lithosphere Seismic Experiment","interactions":[],"lastModifiedDate":"2020-05-07T14:33:02.99065","indexId":"70015909","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Crustal structure of the northwestern Basin and Range Province from the 1986 Program for Array Seismic Studies of the Continental Lithosphere Seismic Experiment","docAbstract":"A portion of northwestern Nevada was imaged to determine the crustal structure and to assess reported differences between refraction versus reflection determinations of Moho depth and how the crustal composition and structure has been influenced by volcanic and extension mechanisms. Interpretation of the refraction/wide-angle reflection data suggests that the crust is fairly uniform in thickness and varies by less than 5 km over the 280 km east-west profile and 3 km over its 220 km north-south length. The velocity structure is characterized by five layers: 1) an uppermost crust, composed of sedimentary rocks and basement that has an average velocity of 5.7 km s-1; 2) a middle crust that extends to a depth of 18-22 with an average velocity of 6.1 km s-1; 3) a 10-12 km thick lower crust with an average velocity of 6.6 km s-1; 4) a 2-5 km thick transitional crust-mantle boundary defined by a 7.6 km s-1 velocity; and 5) an upper mantle with an average Pn velocity of 7.9-8.0 km s-1. A uniform upper mantle composition across the Basin and Range is suggested and the homogeneity of the velocity structure beneath the western Basin and Range argues for a youthful Moho and crust that has been reworked by province-wide late Cenozoic extension, episodic magmatism, and underplating. -from Authors","largerWorkTitle":"","language":"English","publisher":"AGU","doi":"10.1029/JB095iB13p21823","issn":"01480227","usgsCitation":"Benz, H.M., Smith, R.B., and Mooney, W.D., 1990, Crustal structure of the northwestern Basin and Range Province from the 1986 Program for Array Seismic Studies of the Continental Lithosphere Seismic Experiment: Journal of Geophysical Research, v. 95, no. B13, p. 21823-21842, https://doi.org/10.1029/JB095iB13p21823.","productDescription":"20 p.","startPage":"21823","endPage":"21842","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":223184,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.51953124999999,\n              32.13840869677249\n            ],\n            [\n              -104.150390625,\n              32.13840869677249\n            ],\n            [\n              -104.150390625,\n              45.67548217560647\n            ],\n            [\n              -122.51953124999999,\n              45.67548217560647\n            ],\n            [\n              -122.51953124999999,\n              32.13840869677249\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"95","issue":"B13","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059fcf0e4b0c8380cd4e520","contributors":{"authors":[{"text":"Benz, Harley M. 0000-0002-6860-2134 benz@usgs.gov","orcid":"https://orcid.org/0000-0002-6860-2134","contributorId":794,"corporation":false,"usgs":true,"family":"Benz","given":"Harley","email":"benz@usgs.gov","middleInitial":"M.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":372055,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, R. B.","contributorId":64589,"corporation":false,"usgs":true,"family":"Smith","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":372056,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":372057,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":5222335,"text":"5222335 - 1990 - Summer-fall survival of American woodcock in Maine","interactions":[],"lastModifiedDate":"2024-11-27T16:59:38.349548","indexId":"5222335","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Summer-fall survival of American woodcock in Maine","docAbstract":"<p>We estimated summer-fall (15 Jun-20 Oct) survival for 32 adult and 96 fledged young American woodcock (<i>Scolopax minor</i>) radiotagged in eastern Maine during 1982-84 using single-interval, multiple-interval, and nonparametric (product-limit) methods. Single-interval survival estimates were 0.90, 0.88, 0.57, and 0.73 for adult males, adult females, young males, and young females, respectively. Multiple-interval survival estimates (0.93, 0.88, 0.63, and 0.71) and product-limit estimates were similar (0.92, 0.90, 0.60, and 0.69). Within each age class, male and female period survival was not significantly different for any method. However, point estimates of survival for young females exceeded those of young males by 0.08-0.16. Regardless of sex, adults exhibited higher summer-fall survival (range = 0.89-0.92) than young woodcock (range = 0.64-0.68). Age-specific variation in survival was caused by different predation rates that may be related to age-specific differences in mobility. The survival rates sustained by young woodcock during our study were similar to 4-month rates derived from annual survival estimates that assume constant mortality throughout the year. The high summer-fall survival estimates exhibited by adult woodcock suggest that most of their annual mortality occurs during another season.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3808908","usgsCitation":"Derleth, E.L., and Sepik, G.F., 1990, Summer-fall survival of American woodcock in Maine: Journal of Wildlife Management, v. 54, no. 1, p. 97-106, https://doi.org/10.2307/3808908.","productDescription":"10 p.","startPage":"97","endPage":"106","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":196805,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Moosehorn National Wildlife Refuge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -67.3421839957323,\n              45.12198312819828\n            ],\n            [\n              -67.3421839957323,\n              45.043085523510314\n            ],\n            [\n              -67.22936983686924,\n              45.043085523510314\n            ],\n            [\n              -67.22936983686924,\n              45.12198312819828\n            ],\n            [\n              -67.3421839957323,\n              45.12198312819828\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"54","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b01e4b07f02db6986b8","contributors":{"authors":[{"text":"Derleth, Eric L.","contributorId":220145,"corporation":false,"usgs":false,"family":"Derleth","given":"Eric","email":"","middleInitial":"L.","affiliations":[{"id":6661,"text":"US Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":336103,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sepik, Greg F.","contributorId":100055,"corporation":false,"usgs":false,"family":"Sepik","given":"Greg","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":336104,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":27508,"text":"wri904050 - 1990 - Ground-water resources of Honey Lake Valley, Lassen County, California, and Washoe County, Nevada","interactions":[],"lastModifiedDate":"2022-05-10T17:23:56.874406","indexId":"wri904050","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"90-4050","title":"Ground-water resources of Honey Lake Valley, Lassen County, California, and Washoe County, Nevada","docAbstract":"Honey Lake Valley is a 2,200 sq-mi, topographically closed basin about 35 miles northwest of Reno, Nevada. Unconsolidated basin-fill deposits on the valley floor and fractured volcanic rocks in northern and eastern uplands are the principal aquifers. In the study area, about 130,000 acre- ft of water recharges the aquifer system annually, about 40% by direct infiltration of precipitation and about 60% by infiltration of streamflow and irrigation water. Balancing this is an equal amount of groundwater discharge, of which about 65% evaporates from the water table or is transpired by phreatophytes, about 30 % is withdrawn from wells, and about 5% leaves the basin as subsurface outflow to the east. Results of a groundwater flow model of the eastern part of the basin, where withdrawals for public supply have been proposed, indicate that if 15,000 acre-ft of water were withdrawn annually, a new equilibrium would eventually be established by a reduction of about 60% in both evapotranspiration and subsurface outflow to the east. Hydrologic effects would be minimal at the western boundary of the flow-model area. Within the modeled area, the increased withdrawals cause an increase in the simulated net flow of groundwater eastward across the California-Nevada State line from about 670 acre-ft/yr to about 2,300 acre-ft/yr. 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