{"pageNumber":"3239","pageRowStart":"80950","pageSize":"25","recordCount":184904,"records":[{"id":70022472,"text":"70022472 - 2000 - Ore-fluid evolution at the Getchell Carlin-type gold deposit, Nevada, USA","interactions":[],"lastModifiedDate":"2022-12-22T16:56:52.711292","indexId":"70022472","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1593,"text":"European Journal of Mineralogy","active":true,"publicationSubtype":{"id":10}},"title":"Ore-fluid evolution at the Getchell Carlin-type gold deposit, Nevada, USA","docAbstract":"<p>Minerals and fluid-inclusion populations were examined using petrography, microthermometry, quadrupole mass-spectrometer gas analyses and stable-isotope studies to characterize fluids responsible for gold mineralization at the Getchell Carlin-type gold deposit. The gold-ore assemblage at Getchell is superimposed on quartz-pyrite vein mineralization associated with a Late-Cretaceous granodiorite stock that intruded Lower-Paleozoic sedimentary rocks. The ore assemblage, of mid-Tertiary age, consists of disseminated arsenian pyrite that contains submicrometer gold, jasperoid quartz, and later fluorite and orpiment that fill fractures and vugs. Late ore-stage realgar and calcite enclose ore-stage minerals.</p><p>Pre-ore quartz trapped fluids with a wide range of salinities (1 to 21 wt.% NaCl equivalent), gas compositions (H<sub>2</sub>O, CO<sub>2</sub>, and CH<sub>4</sub>), and temperatures (120 to &gt; 360°C). Oxygen- and hydrogen-isotope ratios indicate that pre-ore fluids likely had a magmatic source, and were associated with intrusion of the granodiorite stock and related dikes.</p><p>Ore-stage jasperoid contains moderate salinity, aqueous fluid inclusions trapped at 180 to 220°C. Ore fluids contain minor CO<sub>2</sub><span>&nbsp;</span>and trace H<sub>2</sub>S that allowed the fluid to react with limestone host rocks and transport gold, respectively. Aqueous inclusions in fluorite indicate that fluid temperatures declined to ∼ 175°C by the end of ore-stage mineralization. As the hydrothermal system collapsed, fluid temperatures declined to 155 to 115°C and realgar and calcite precipitated.</p><p>Inclusion fluids in ore-stage minerals have high δD<sub>H2O</sub><span>&nbsp;</span>and δ<sup>18</sup>O<sub>H2O</sub><span>&nbsp;</span>values that indicate that the fluid had a deep source, and had a metamorphic or magmatic origin, or both. Late ore-stage fluids extend to lower δ<sub>H2O</sub><span>&nbsp;</span>values, and have a wider range of δ<sup>18</sup>O<sub>H2O</sub><span>&nbsp;</span>values suggesting dilution by variably exchanged meteoric waters.</p><p>Results show that deeply sourced ore fluids rose along the Getchell fault system, where they dissolved carbonate wall rocks and deposited gold-enriched pyrite and jasperoid quartz. Gold and pyrite precipitated together as H<sub>2</sub>S in the ore fluids reacted with iron in the host rocks. As ore fluids mixed with local aquifer fluids, ore fluids became cooler and more dilute. Cooling caused precipitation of ore-stage fluorite and orpiment, and late ore-stage realgar. Phase separation and/or neutralization of the ore fluid during the waning stages of the hydrothermal ore system led to deposition of late ore-stage calcite.</p>","language":"English","publisher":"E. Schweizerbart'sche Verldghuchhandlung","doi":"10.1127/0935-1221/2000/0012-0195","usgsCitation":"Cline, J.S., and Hofstra, A.H., 2000, Ore-fluid evolution at the Getchell Carlin-type gold deposit, Nevada, USA: European Journal of Mineralogy, v. 12, no. 1, p. 195-212, https://doi.org/10.1127/0935-1221/2000/0012-0195.","productDescription":"18 p.","startPage":"195","endPage":"212","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":230500,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":410942,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.geoscienceworld.org/eurjmin/article/12/1/195/61682/Ore-fluid-evolution-at-the-Getchell-Carlin-type"}],"country":"United States","state":"Nevada","city":"Getchell","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.70339965820312,\n              40.681679458715635\n            ],\n            [\n              -116.75582885742188,\n              40.681679458715635\n            ],\n            [\n              -116.75582885742188,\n              41.33970040774419\n            ],\n            [\n              -117.70339965820312,\n              41.33970040774419\n            ],\n            [\n              -117.70339965820312,\n              40.681679458715635\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"12","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6f71e4b0c8380cd75acc","contributors":{"authors":[{"text":"Cline, Jean S.","contributorId":83628,"corporation":false,"usgs":true,"family":"Cline","given":"Jean","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":393749,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hofstra, Albert H. 0000-0002-2450-1593 ahofstra@usgs.gov","orcid":"https://orcid.org/0000-0002-2450-1593","contributorId":1302,"corporation":false,"usgs":true,"family":"Hofstra","given":"Albert","email":"ahofstra@usgs.gov","middleInitial":"H.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":393750,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022541,"text":"70022541 - 2000 - Effects of neck collars and radiotransmitters on survival and reproduction of emperor geese","interactions":[],"lastModifiedDate":"2017-03-06T18:03:01","indexId":"70022541","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","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":"Effects of neck collars and radiotransmitters on survival and reproduction of emperor geese","docAbstract":"<p>Neck collars have been used widely for studies of goose population biology. Despite concerns about their negative impacts, few studies have employed designs capable of clearly demonstrating these effects. During a 1993-98 study of emperor geese (<i>Chen canagica</i>), we contrasted survival and reproduction of geese marked with tarsal bands to those marked with either small neck collars, large neck collars, or small neck collars with attached radiotransmitters. Annual survival of adult females marked with tarsal bands varied among years and averaged 0.807 ?? 0.140 (v?? ?? SE). Survival of geese with other types of markers also varied among years but was lower (0.640 ?? 0.198). Collars with radiotransmitters lowered breeding propensity, as indexed by resighting rates. Although clutch sizes of tarsal banded birds were similar to those for unmarked birds, other markers reduced clutch sizes by about 1 egg. Egg mass and hatch date were not affected by marker type. Future studies of goose demographics should seriously consider use of alternative markers.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3802995","issn":"0022541X","usgsCitation":"Schmutz, J.A., and Morse, J.A., 2000, Effects of neck collars and radiotransmitters on survival and reproduction of emperor geese: Journal of Wildlife Management, v. 64, no. 1, p. 231-237, https://doi.org/10.2307/3802995.","productDescription":"7 p.","startPage":"231","endPage":"237","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":230392,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Manokinak River, Yukon-Kuskokwim Delta","volume":"64","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0768e4b0c8380cd516ab","contributors":{"authors":[{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":394005,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morse, Julie A.","contributorId":63939,"corporation":false,"usgs":true,"family":"Morse","given":"Julie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":394006,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022538,"text":"70022538 - 2000 - Schaben field, Kansas: Improving performance in a Mississippian shallow-shelf carbonate","interactions":[],"lastModifiedDate":"2022-10-05T18:14:07.626499","indexId":"70022538","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","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":"Schaben field, Kansas: Improving performance in a Mississippian shallow-shelf carbonate","docAbstract":"Schaben field (Kansas), located along the northeastern shelf of the Hugoton embayment, produces from Mississippian carbonates in erosional highs immediately beneath a regional unconformity. Production comes from depths of around 4400 ft (1342 m) in partially dolomitized shelf deposits. A detailed reservoir characterization/simulation study, recently performed as part of a Department of Energy Reservoir Class Oil Field Demonstration Project, has led to important revision in explanations for observed patterns of production. Cores recovered from three new data wells identify three main facies: Spicule-rich wackestone-packstone, echinoderm wackestone/packstone/grainstone, and dolomitic mudstone-wackestone. Reservoir quality is highest in spicule-rich wackestone/packstones but is subject to a very high degree of vertical heterogeneity due to facies interbedding, silification, and variable natural fracturing. The oil reservoir is underlain by an active aquifer, which helps maintain reservoir pressure but supports significant water production. Reservoir simulation, using public-domain, PC-based software, suggests that infill drilling is an efficient approach to enhanced recovery. Recent drilling directed by simulation results has shown considerable success in improving field production rates. Results from the Schaben field demonstration project are likely to have wide application for independent oil and exploration companies in western Kansas.Schaben field (Kansas), located along the northeastern shelf of the Hugoton embayment, produces from Mississippian carbonates in erosional highs immediately beneath a regional unconformity. Production comes from depths of around 4400 ft (1342 m) in partially dolomitized shelf deposits. A detailed reservoir characterization/simulation study, recently performed as part of a Department of Energy Reservoir Class Oil Field Demonstration Project, has led to important revision in explanations for observed patterns of production. Cores recovered from three new data wells identify three main facies: spicule-rich wackestone-packstone, echinoderm wackestone/packstone/grainstone, and dolomitic mudstone-wackestone. Reservoir quality is highest in spicule-rich wackestone/packstones but is subject to a very high degree of vertical heterogeneity due to facies interbedding, silification, and variable natural fracturing. The oil reservoir is underlain by an active aquifer, which helps maintain reservoir pressure but supports significant water production. Reservoir simulation, using public-domain, PC-based software, suggests that infill drilling is an efficient approach to enhanced recovery. Recent drilling directed by simulation results has shown considerable success in improving field production rates. Results from the Schaben field demonstration project are likely to have wide application for independent oil and exploration companies in western Kansas.","language":"English","publisher":"American Association of Petroleum Geologists","publisherLocation":"Tulsa, OK, United States","doi":"10.1306/A9673C34-1738-11D7-8645000102C1865D","issn":"01491423","usgsCitation":"Montgomery, S.L., Franseen, E.K., Bhattacharya, S., Gerlach, P., Byrnes, A., Guy, W., and Carr, T., 2000, Schaben field, Kansas: Improving performance in a Mississippian shallow-shelf carbonate: American Association of Petroleum Geologists Bulletin, v. 84, no. 8, p. 1069-1086, https://doi.org/10.1306/A9673C34-1738-11D7-8645000102C1865D.","productDescription":"18 p.","startPage":"1069","endPage":"1086","costCenters":[],"links":[{"id":230351,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Kansas","otherGeospatial":"Schaben Field","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -100.65673828125,\n              38.11727165830543\n            ],\n            [\n              -99.25048828124999,\n              38.11727165830543\n            ],\n            [\n              -99.25048828124999,\n              38.8225909761771\n            ],\n            [\n              -100.65673828125,\n              38.8225909761771\n            ],\n            [\n              -100.65673828125,\n              38.11727165830543\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"84","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b873de4b08c986b3163b1","contributors":{"authors":[{"text":"Montgomery, Scott L.","contributorId":43513,"corporation":false,"usgs":true,"family":"Montgomery","given":"Scott","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":393986,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Franseen, E. K.","contributorId":30367,"corporation":false,"usgs":false,"family":"Franseen","given":"E.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":393984,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bhattacharya, S.","contributorId":97226,"corporation":false,"usgs":true,"family":"Bhattacharya","given":"S.","email":"","affiliations":[],"preferred":false,"id":393990,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gerlach, P.","contributorId":75294,"corporation":false,"usgs":true,"family":"Gerlach","given":"P.","email":"","affiliations":[],"preferred":false,"id":393988,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Byrnes, A.","contributorId":82881,"corporation":false,"usgs":true,"family":"Byrnes","given":"A.","email":"","affiliations":[],"preferred":false,"id":393989,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Guy, W.","contributorId":52358,"corporation":false,"usgs":true,"family":"Guy","given":"W.","affiliations":[],"preferred":false,"id":393987,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Carr, T.R.","contributorId":37094,"corporation":false,"usgs":true,"family":"Carr","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":393985,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70022415,"text":"70022415 - 2000 - Determination of geochemical affinities of granitic rocks from the Aue-Schwarzenberg zone (Erzgebirge, Germany) by multivariate statistics","interactions":[],"lastModifiedDate":"2012-03-12T17:19:42","indexId":"70022415","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2857,"text":"Neues Jahrbuch fur Mineralogie, Monatshefte","active":true,"publicationSubtype":{"id":10}},"title":"Determination of geochemical affinities of granitic rocks from the Aue-Schwarzenberg zone (Erzgebirge, Germany) by multivariate statistics","docAbstract":"Variscan granites of the Erzgebirge region can be effectively classified into five genetically distinct major groups by canonical analysis of geochemical variables. The same classification procedure, when applied to small plutons in the Aue-Schwarzenberg granite zone (ASGZ), shows that all ASGZ granites have compositional affinities to low-F biotite or low-F two-mica granite groups. This suggests that the ASGZ granites were emplaced during the first, late-collisional stage of silicic magmatism in the region, which occurred between about 325 and 318 Ma. The numerous biotite granite bodies in the zone are geochemically distinct from both the neighboring Kirchberg granite pluton and the spatially displaced Niederbobritzsch biotite granite massif. Instead, these bodies seem to constitute a third sub-group within the low-F biotite granite class. The ASGZ biotite granites represent three or more genetically distinct bodies, thus highlighting the enormous compositional variability within this group of granites. Least evolved samples of two-mica granites from the ASGZ apparently reflect the assimilation of low-grade metamorphic country rocks during emplacement, altering the original composition of the melts by enhancing primary Al content. The same genesis is implied for the rare \"cordierite granite\" facies of the Bergen massif, the type pluton for the low-F two-mica granite group in the Erzgebirge.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Neues Jahrbuch fur Mineralogie, Monatshefte","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00283649","usgsCitation":"Forster, H., and Davis, J., 2000, Determination of geochemical affinities of granitic rocks from the Aue-Schwarzenberg zone (Erzgebirge, Germany) by multivariate statistics: Neues Jahrbuch fur Mineralogie, Monatshefte, v. 12, p. 529-542.","startPage":"529","endPage":"542","numberOfPages":"14","costCenters":[],"links":[{"id":230798,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ffa7e4b0c8380cd4f2f5","contributors":{"authors":[{"text":"Forster, H.-J.","contributorId":104653,"corporation":false,"usgs":true,"family":"Forster","given":"H.-J.","email":"","affiliations":[],"preferred":false,"id":393549,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Davis, J.C.","contributorId":72121,"corporation":false,"usgs":true,"family":"Davis","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":393548,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022333,"text":"70022333 - 2000 - Offshore-onshore correlation of upper Pleistocene strata, New Jersey Coastal Plain to continental shelf and slope","interactions":[],"lastModifiedDate":"2012-03-12T17:19:42","indexId":"70022333","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Offshore-onshore correlation of upper Pleistocene strata, New Jersey Coastal Plain to continental shelf and slope","docAbstract":"High-resolution seismic reflection profiles (~ 1-5 m resolution), including Geopulse(TM), Uniboom(TM), minisparker, small air gun, and water gun sources, are used to trace the ?? 18O stage 5 portion of the outcropping Cape May Formation across the shelf to the continental slope. The ?? 18O stage 5/6 boundary identified at Ocean Drilling Project (ODP) Site 903 on the continental slope anchors the onshore-offshore seismic correlations. Above the ?? 18O stage 5 sequence, there are distinguishable lowstand systems tracts (LST), transgressive systems tracts (TST) and highstand systems tracts (HST) that correlate with ?? 18O stages 4 through 1. Atlantic Margin Coring Project (AMCOR) holes 6009, 6010, 6011, 6020, and 6021C provide age and paleoenvironmental indicators that agree with these correlations. The sub-arctic paleoenvironmental indicators in sequences of ?? 18O stage 3 agree with the cooler temperatures and lower sea-level highstands of that time. Thicker ?? 18O stage 3 and 4 sequences are preserved in the Paleo-Hudson River incised valley across the shelf. The expanded ice sheets during stage ?? 18O 3 compared to ?? 18O stages 1 and 5 probably increased sediment discharge in the Hudson River drainage system. (C) 2000 Elsevier Science B.V. All rights reserved.","largerWorkTitle":"Sedimentary Geology","language":"English","doi":"10.1016/S0037-0738(00)00020-8","issn":"00370738","usgsCitation":"Sheridan, R.E., Ashley, G., Miller, K., Waldner, J., Hall, D.W., and Uptegrove, J., 2000, Offshore-onshore correlation of upper Pleistocene strata, New Jersey Coastal Plain to continental shelf and slope, <i>in</i> Sedimentary Geology, v. 134, no. 1-2, p. 197-207, https://doi.org/10.1016/S0037-0738(00)00020-8.","startPage":"197","endPage":"207","numberOfPages":"11","costCenters":[],"links":[{"id":206727,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0037-0738(00)00020-8"},{"id":230641,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"134","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6cbde4b0c8380cd74dbe","contributors":{"authors":[{"text":"Sheridan, R. E.","contributorId":36681,"corporation":false,"usgs":true,"family":"Sheridan","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":393193,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ashley, G.M.","contributorId":99313,"corporation":false,"usgs":true,"family":"Ashley","given":"G.M.","email":"","affiliations":[],"preferred":false,"id":393196,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, K.G.","contributorId":18094,"corporation":false,"usgs":true,"family":"Miller","given":"K.G.","email":"","affiliations":[],"preferred":false,"id":393192,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Waldner, J.S.","contributorId":69726,"corporation":false,"usgs":true,"family":"Waldner","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":393194,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hall, D. W.","contributorId":106528,"corporation":false,"usgs":true,"family":"Hall","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":393197,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Uptegrove, J.","contributorId":78902,"corporation":false,"usgs":true,"family":"Uptegrove","given":"J.","affiliations":[],"preferred":false,"id":393195,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70022332,"text":"70022332 - 2000 - Geochemical and microbiological methods for evaluating anaerobic processes in an aquifer contaminated by landfill leachate","interactions":[],"lastModifiedDate":"2018-12-10T08:22:49","indexId":"70022332","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical and microbiological methods for evaluating anaerobic processes in an aquifer contaminated by landfill leachate","docAbstract":"<p><br data-mce-bogus=\"1\"></p>","language":"English","publisher":"ACS","doi":"10.1021/es991342b","issn":"0013936X","usgsCitation":"Cozzarelli, I., Suflita, J., Ulrich, G., Harris, S., Scholl, M.A., Schlottmann, J., and Christenson, S., 2000, Geochemical and microbiological methods for evaluating anaerobic processes in an aquifer contaminated by landfill leachate: Environmental Science & Technology, v. 34, no. 18, p. 4025-4033, https://doi.org/10.1021/es991342b.","productDescription":"9 p.","startPage":"4025","endPage":"4033","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":230640,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":206726,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es991342b"}],"volume":"34","issue":"18","noUsgsAuthors":false,"publicationDate":"2000-08-09","publicationStatus":"PW","scienceBaseUri":"505a15dbe4b0c8380cd54f7c","contributors":{"authors":[{"text":"Cozzarelli, I.M. 0000-0002-5123-1007","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":22343,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"I.M.","affiliations":[],"preferred":false,"id":393187,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Suflita, J.M.","contributorId":83303,"corporation":false,"usgs":true,"family":"Suflita","given":"J.M.","affiliations":[],"preferred":false,"id":393188,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ulrich, G.A.","contributorId":86921,"corporation":false,"usgs":true,"family":"Ulrich","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":393190,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harris, S.H.","contributorId":10950,"corporation":false,"usgs":true,"family":"Harris","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":393185,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Scholl, M. A.","contributorId":86365,"corporation":false,"usgs":true,"family":"Scholl","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":393189,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schlottmann, J.L.","contributorId":103699,"corporation":false,"usgs":true,"family":"Schlottmann","given":"J.L.","affiliations":[],"preferred":false,"id":393191,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Christenson, S.","contributorId":17791,"corporation":false,"usgs":true,"family":"Christenson","given":"S.","affiliations":[],"preferred":false,"id":393186,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70162324,"text":"70162324 - 2000 - Peces de la Isla del Coco Fishes","interactions":[],"lastModifiedDate":"2016-01-21T12:57:42","indexId":"70162324","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":15,"text":"Monograph"},"title":"Peces de la Isla del Coco Fishes","docAbstract":"<p>No abstract available.</p>","language":"Spanish","publisher":"Institito Nacional de Biodiversedad","usgsCitation":"Garrison, V.H., 2000, Peces de la Isla del Coco Fishes, 392 p.","productDescription":"392 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"links":[{"id":314595,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314594,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://coastal.er.usgs.gov/cocos/"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a20f4de4b0961cf2811c19","contributors":{"authors":[{"text":"Garrison, Virginia H. ginger_garrison@usgs.gov","contributorId":2386,"corporation":false,"usgs":true,"family":"Garrison","given":"Virginia","email":"ginger_garrison@usgs.gov","middleInitial":"H.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true}],"preferred":true,"id":589230,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022465,"text":"70022465 - 2000 - The role of \"blebbing\" in overcoming the hydrophobic barrier during biooxidation of elemental sulfur by <i>Thiobacillus thiooxidans</i>","interactions":[],"lastModifiedDate":"2017-11-08T14:25:12","indexId":"70022465","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"The role of \"blebbing\" in overcoming the hydrophobic barrier during biooxidation of elemental sulfur by <i>Thiobacillus thiooxidans</i>","docAbstract":"Brimstone Basin, in southeastern Yellowstone National Park, Wyoming is an ancient hydrothermal area containing solfataric alteration. Drainage waters flowing from Brimstone Basin had pH values as low as 1.23 and contained up to 1.7×10<sup>6</sup> MPN/ml acidophilic sulfur-oxidizing bacteria. <i>Thiobacillus thiooxidans</i> was the dominant sulfur-oxidizing bacterium recovered from an enrichment culture and was used in a structural examination of bacterial sulfur oxidation. Growth in these sulfur cultures occurred in two phases with cells in association with the macroscopic sulfur grains and in suspension above these grains. Colonization of sulfur grains by individual cells and microcolonies was facilitated by organic material that appeared to be responsible for bacterial adhesion. Transmission electron microscopy of negatively stained (2% [wt./vol.] uranyl acetate), sulfur-grown <i>T. thiooxidans</i> revealed extensive membrane blebbing (sloughing of outer membrane vesicles) and the presence of approximately 100 nm sized sulfur particles adsorbed to membrane material surrounding individual bacteria. Sulfite-grown bacteria did not possess membrane blebs. The amphipathic nature of these outer membrane vesicles appear to be responsible for overcoming the hydrophobic barrier necessary for the growth of <i>T. thiooxidans</i> on elemental sulfur.","largerWorkTitle":"Chemical Geology","language":"English","doi":"10.1016/S0009-2541(00)00221-7","issn":"00092541","usgsCitation":"Knickerbocker, C., Nordstrom, D.K., and Southam, G., 2000, The role of \"blebbing\" in overcoming the hydrophobic barrier during biooxidation of elemental sulfur by <i>Thiobacillus thiooxidans</i>, v. 169, no. 3-4, https://doi.org/10.1016/S0009-2541(00)00221-7.","startPage":"425","endPage":"433","numberOfPages":"9","costCenters":[],"links":[{"id":230426,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":206635,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0009-2541(00)00221-7"}],"volume":"169","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf49e4b08c986b3246a8","contributors":{"authors":[{"text":"Knickerbocker, C.","contributorId":104243,"corporation":false,"usgs":true,"family":"Knickerbocker","given":"C.","email":"","affiliations":[],"preferred":false,"id":393728,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":393727,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Southam, G.","contributorId":10169,"corporation":false,"usgs":true,"family":"Southam","given":"G.","email":"","affiliations":[],"preferred":false,"id":393726,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70022331,"text":"70022331 - 2000 - A method for mapping apparent stress and energy radiation applied to the 1994 Northridge earthquake fault zone","interactions":[],"lastModifiedDate":"2013-12-03T11:31:59","indexId":"70022331","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"A method for mapping apparent stress and energy radiation applied to the 1994 Northridge earthquake fault zone","docAbstract":"Using the Northridge earthquake as an example, we demonstrate a new technique able to resolve apparent stress within subfaults of a larger fault plane. From the model of Wald et al. (1996), we estimated apparent stress for each subfault using τ<sub>a</sub> = (G/β)<Ḋ>/2 where G is the modulus of rigidity, β is the shear wave speed, and <Ḋ> is the average slip rate. The image of apparent stress mapped over the Northridge fault plane supports the idea that the stresses causing fault slip are inhomogeneous, but limited by the strength of the crust. Indeed, over the depth range 5 to 17 km, maximum values of apparent stress for a given depth interval agree with τ<sub>a</sub>(max)=0.06S(z), where S is the laboratory estimate of crustal strength as a function of depth z. The seismic energy from each subfault was estimated from the product τ<sub>a</sub>DA, where A is subfault area and D its slip. Over the fault zone, we found that the radiated energy is quite variable spatially, with more than 50% of the total coming from just 15% of the subfaults.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/1999GL011344","issn":"00948276","usgsCitation":"McGarr, A., and Fletcher, J.B., 2000, A method for mapping apparent stress and energy radiation applied to the 1994 Northridge earthquake fault zone: Geophysical Research Letters, v. 27, no. 13, p. 1953-1956, https://doi.org/10.1029/1999GL011344.","startPage":"1953","endPage":"1956","numberOfPages":"4","costCenters":[],"links":[{"id":206709,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/1999GL011344"},{"id":230607,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"13","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e454e4b0c8380cd465ae","contributors":{"authors":[{"text":"McGarr, Art 0000-0001-9769-4093","orcid":"https://orcid.org/0000-0001-9769-4093","contributorId":43491,"corporation":false,"usgs":true,"family":"McGarr","given":"Art","affiliations":[],"preferred":false,"id":393184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fletcher, Joe B.","contributorId":8850,"corporation":false,"usgs":true,"family":"Fletcher","given":"Joe","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":393183,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022466,"text":"70022466 - 2000 - Development and application of a comprehensive simulation model to evaluate impacts of watershed structures and irrigation water use on streamflow and groundwater: The case of Wet Walnut Creek Watershed, Kansas, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:19:44","indexId":"70022466","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Development and application of a comprehensive simulation model to evaluate impacts of watershed structures and irrigation water use on streamflow and groundwater: The case of Wet Walnut Creek Watershed, Kansas, USA","docAbstract":"This paper presents the results of a comprehensive modeling study of surface and groundwater systems, including stream-aquifer interactions, for the Wet Walnut Creek Watershed in west-central Kansas. The main objective of this study was to assess the impacts of watershed structures and irrigation water use on streamflow and groundwater levels, which in turn affect availability of water for the Cheyenne Bottoms Wildlife Refuge Management area. The surface-water flow model, POTYLDR, and the groundwater flow model, MODFLOW, were combined into an integrated, watershed-scale, continuous simulation model. Major revisions and enhancements were made to the POTYLDR and MODFLOW models for simulating the detailed hydrologic budget for the Wet Walnut Creek Watershed. The computer simulation model was calibrated and verified using historical streamflow records (at Albert and Nekoma gaging stations), reported irrigation water use, observed water-level elevations in watershed structure pools, and groundwater levels in the alluvial aquifer system. To assess the impact of watershed structures and irrigation water use on streamflow and groundwater levels, a number of hypothetical management scenarios were simulated under various operational criteria for watershed structures and different annual limits on water use for irrigation. A standard 'base case' was defined to allow comparative analysis of the results of different scenarios. The simulated streamflows showed that watershed structures decrease both streamflows and groundwater levels in the watershed. The amount of water used for irrigation has a substantial effect on the total simulated streamflow and groundwater levels, indicating that irrigation is a major budget item for managing water resources in the watershed. (C) 2000 Elsevier Science B.V.This paper presents the results of a comprehensive modeling study of surface and groundwater systems, including stream-aquifer interactions, for the Wet Walnut Creek Watershed in west-central Kansas. The main objective of this study was to assess the impacts of watershed structures and irrigation water use on streamflow and groundwater levels, which in turn affect availability of water for the Cheyenne Bottoms Wildlife Refuge Management area. The surface-water flow model, POTYLDR, and the groundwater flow model, MODFLOW, were combined into an integrated, watershed-scale, continuous simulation model. Major revisions and enhancements were made to the POTYLDR and MODFLOW models for simulating the detailed hydrologic budget for the Wet Walnut Creek Watershed. The computer simulation model was calibrated and verified using historical streamflow records (at Albert and Nekoma gaging stations), reported irrigation water use, observed water-level elevations in watershed structure pools, and groundwater levels in the alluvial aquifer system. To assess the impact of watershed structures and irrigation water use on streamflow and groundwater levels, a number of hypothetical management scenarios were simulated under various operational criteria for watershed structures and different annual limits on water use for irrigation. A standard `base case' was defined to allow comparative analysis of the results of different scenarios. The simulated streamflows showed that watershed structures decrease both streamflows and groundwater levels in the watershed. The amount of water used for irrigation has a substantial effect on the total simulated streamflow and groundwater levels, indicating that irrigation is a major budget item for managing water resources in the watershed.A comprehensive simulation model that combines the surface water flow model POTYLDR and the groundwater flow model MODFLOW was used to study the impacts of watershed structures (e.g., dams) and irrigation water use (including stream-aquifer interactions) on streamflow and groundwater. The model was revised, enhanced, calibrated, and verified, then applied to evaluate the hydrologic budget for Wet Wal","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Science B.V.","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/S0022-1694(00)00295-X","issn":"00221694","usgsCitation":"Ramireddygari, S., Sophocleous, M., Koelliker, J., Perkins, S., and Govindaraju, R., 2000, Development and application of a comprehensive simulation model to evaluate impacts of watershed structures and irrigation water use on streamflow and groundwater: The case of Wet Walnut Creek Watershed, Kansas, USA: Journal of Hydrology, v. 236, no. 3-4, p. 223-246, https://doi.org/10.1016/S0022-1694(00)00295-X.","startPage":"223","endPage":"246","numberOfPages":"24","costCenters":[],"links":[{"id":206636,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0022-1694(00)00295-X"},{"id":230427,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"236","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0016e4b0c8380cd4f5a5","contributors":{"authors":[{"text":"Ramireddygari, S.R.","contributorId":63191,"corporation":false,"usgs":true,"family":"Ramireddygari","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":393733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sophocleous, M.A.","contributorId":18032,"corporation":false,"usgs":true,"family":"Sophocleous","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":393731,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koelliker, J.K.","contributorId":49940,"corporation":false,"usgs":true,"family":"Koelliker","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":393732,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Perkins, S.P.","contributorId":12211,"corporation":false,"usgs":true,"family":"Perkins","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":393729,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Govindaraju, R.S.","contributorId":15365,"corporation":false,"usgs":true,"family":"Govindaraju","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":393730,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70022467,"text":"70022467 - 2000 - Temporal variations in parameters reflecting terminal-electron-accepting processes in an aquifer contaminated with waste fuel and chlorinated solvents","interactions":[],"lastModifiedDate":"2018-12-10T10:27:13","indexId":"70022467","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Temporal variations in parameters reflecting terminal-electron-accepting processes in an aquifer contaminated with waste fuel and chlorinated solvents","docAbstract":"<p>A fundamental issue in aquifer biogeochemistry is the means by which solute transport, geochemical processes, and microbiological activity combine to produce spatial and temporal variations in redox zonation. In this paper, we describe the temporal variability of TEAP conditions in shallow groundwater contaminated with both waste fuel and chlorinated solvents. TEAP parameters (including methane, dissolved iron, and dissolved hydrogen) were measured to characterize the contaminant plume over a 3-year period. We observed that concentrations of TEAP parameters changed on different time scales and appear to be related, in part, to recharge events. Changes in all TEAP parameters were observed on short time scales (months), and over a longer 3-year period.</p>\n<br/>\n<p>The results indicate that (1) interpretations of TEAP conditions in aquifers contaminated with a variety of organic chemicals, such as those with petroleum hydrocarbons and chlorinated solvents, must consider additional hydrogen-consuming reactions (e.g., dehalogenation); (2) interpretations must consider the roles of both in situ (at the sampling point) biogeochemical and solute transport processes; and (3) determinations of microbial communities are often necessary to confirm the interpretations made from geochemical and hydrogeological measurements on these processes.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0009-2541(00)00223-0","issn":"00092541","usgsCitation":"McGuire, J., Smith, E.W., Long, D.T., Hyndman, D.W., Haack, S.K., Klug, M.J., and Velbel, M.A., 2000, Temporal variations in parameters reflecting terminal-electron-accepting processes in an aquifer contaminated with waste fuel and chlorinated solvents: Chemical Geology, v. 169, no. 3-4, p. 471-485, https://doi.org/10.1016/S0009-2541(00)00223-0.","productDescription":"15 p.","startPage":"471","endPage":"485","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":206637,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0009-2541(00)00223-0"},{"id":230428,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Michigan ","otherGeospatial":"Wurtsmith Air Force Base ","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -83.47171783447264,\n              44.34644018791789\n            ],\n            [\n              -83.31722259521484,\n              44.34644018791789\n            ],\n            [\n              -83.31722259521484,\n              44.50899337263551\n            ],\n            [\n              -83.47171783447264,\n              44.50899337263551\n            ],\n            [\n              -83.47171783447264,\n              44.34644018791789\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"169","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba52ce4b08c986b320878","contributors":{"authors":[{"text":"McGuire, Jennifer T.","contributorId":53979,"corporation":false,"usgs":true,"family":"McGuire","given":"Jennifer T.","affiliations":[],"preferred":false,"id":393738,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Erik W.","contributorId":104659,"corporation":false,"usgs":true,"family":"Smith","given":"Erik","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":393740,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Long, David T.","contributorId":20364,"corporation":false,"usgs":true,"family":"Long","given":"David","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":393736,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hyndman, David W.","contributorId":7868,"corporation":false,"usgs":true,"family":"Hyndman","given":"David","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":393735,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Haack, Sheridan K. skhaack@usgs.gov","contributorId":1982,"corporation":false,"usgs":true,"family":"Haack","given":"Sheridan","email":"skhaack@usgs.gov","middleInitial":"K.","affiliations":[{"id":382,"text":"Michigan Water Science Center","active":true,"usgs":true}],"preferred":true,"id":393734,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Klug, Michael J.","contributorId":20930,"corporation":false,"usgs":true,"family":"Klug","given":"Michael","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":393737,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Velbel, Michael A.","contributorId":88520,"corporation":false,"usgs":true,"family":"Velbel","given":"Michael","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":393739,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70022546,"text":"70022546 - 2000 - The northern Sacramento Mountains, southwest United States. Part II: Exhumation history and detachment faulting","interactions":[],"lastModifiedDate":"2013-12-03T13:12:36","indexId":"70022546","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1785,"text":"Geological Society Special Publication","active":true,"publicationSubtype":{"id":10}},"title":"The northern Sacramento Mountains, southwest United States. Part II: Exhumation history and detachment faulting","docAbstract":"Thermochronologic and thermobarometric data reveal the timing, distribution and intensity of thermal events associated with detachment faulting in the Sacramento Mountains metamorphic core complex. In the northwest Sacramento Mountains, cooling rates of c. 100°C Ma<sup>−1</sup> are associated with Late Cretaceous plutonism followed by cooling of the crust by thermal conduction. Post-Late Cretaceous cooling slowed to c. 1–6°C Ma<sup>−1</sup>. Finally, the region records average cooling rates of 38–53°C Ma<sup>−1</sup> between c. 20 and 15 Ma. In contrast, the thermal profile of the northeast Sacramento Mountains is dominated by syntectonic Tertiary plutonism followed by very rapid cooling. A granodioritic suite intruded at c. 680°C and c. 3 kbar at c. 20 Ma, records cooling to <100°C by c. 15 Ma. Such rapid cooling and exhumation suggests that unroofing by tectonic denudation was the driving mechanism for the final cooling. The similarity of the miocene cooling profiles between these two areas clearly suggests that the Sacramento Mountains experienced a regional cooling event associated with tectonic unroofing driven by regional Miocene crustal extension. Estimates of the initial angle of the Sacramento Mountains detachment fault using palaeothermal gradients suggest that it was active at a dip of 25°.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society Special Publication","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1144/GSL.SP.1999.164.01.11","issn":"03058719","usgsCitation":"Pease, V., Foster, D., Wooden, J., O'Sullivan, P., Argent, J., and Fanning, C., 2000, The northern Sacramento Mountains, southwest United States. Part II: Exhumation history and detachment faulting: Geological Society Special Publication, v. 164, p. 199-238, https://doi.org/10.1144/GSL.SP.1999.164.01.11.","startPage":"199","endPage":"238","numberOfPages":"40","costCenters":[],"links":[{"id":230468,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":280153,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1144/GSL.SP.1999.164.01.11"}],"volume":"164","noUsgsAuthors":false,"publicationDate":"1999-11-30","publicationStatus":"PW","scienceBaseUri":"505bae2be4b08c986b323f31","contributors":{"authors":[{"text":"Pease, V.","contributorId":38384,"corporation":false,"usgs":true,"family":"Pease","given":"V.","email":"","affiliations":[],"preferred":false,"id":394030,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, D.","contributorId":36892,"corporation":false,"usgs":true,"family":"Foster","given":"D.","email":"","affiliations":[],"preferred":false,"id":394029,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wooden, J.","contributorId":21736,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","affiliations":[],"preferred":false,"id":394028,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O'Sullivan, P.","contributorId":9918,"corporation":false,"usgs":true,"family":"O'Sullivan","given":"P.","affiliations":[],"preferred":false,"id":394026,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Argent, J.","contributorId":10675,"corporation":false,"usgs":true,"family":"Argent","given":"J.","email":"","affiliations":[],"preferred":false,"id":394027,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fanning, C.","contributorId":90981,"corporation":false,"usgs":true,"family":"Fanning","given":"C.","affiliations":[],"preferred":false,"id":394031,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70022474,"text":"70022474 - 2000 - Redox conditions and the efficiency of chlorinated ethene biodegradation: Field studies","interactions":[],"lastModifiedDate":"2012-03-12T17:19:44","indexId":"70022474","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Redox conditions and the efficiency of chlorinated ethene biodegradation: Field studies","docAbstract":"The effect of redox conditions on the efficiency of chlorinated ethene biodegradation was investigated at two field sites. One site (NAS Cecil Field, FL) is characterized by predominantly Fe(III)-reducing conditions in the contaminant source area, grading to predominantly sulfate- reducing conditions downgradient. This sequence of redox conditions led to relatively inefficient biodegradation of chlorinated ethenes, with high concentrations of trichloroethene extending more than 400 meters downgradient of the source area. In contrast, a second site (NBS Kings Bay, GA) characterized by predominantly sulfate-reducing conditions in the source area followed by Fe(III)-reducing conditions downgradient. In this system perchloroethene (PCE) and TCE were rapidly biodegraded and extended less than 100 meters downgradient. Rates of ground- water transport are similar at the two sites (???0.2 m/d) indicating that the succession of redox processes, rather than other hydrologic factors, is the principal control on biodegradation. In particular, redox conditions that favor the initial reduction of highly chlorinated ethenes (methanogenic or sulfate-reducing conditions) followed by more oxidizing conditions (Fe(III)- reducing or oxic conditions) favors efficient biodegradation. Thus, documenting the succession of redox processes is an important step in understanding the efficiency of chlorinated ethene biodegradation in ground-water systems.","largerWorkTitle":"ACS Division of Environmental Chemistry, Preprints","language":"English","issn":"00933066","usgsCitation":"Chapelle, F.H., and Bradley, P., 2000, Redox conditions and the efficiency of chlorinated ethene biodegradation: Field studies, <i>in</i> ACS Division of Environmental Chemistry, Preprints, v. 40, no. 2, p. 343-345.","startPage":"343","endPage":"345","numberOfPages":"3","costCenters":[],"links":[{"id":230502,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a3bde4b0e8fec6cdb959","contributors":{"authors":[{"text":"Chapelle, F. H.","contributorId":101697,"corporation":false,"usgs":true,"family":"Chapelle","given":"F.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":393757,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, P. M. 0000-0001-7522-8606","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":29465,"corporation":false,"usgs":true,"family":"Bradley","given":"P. M.","affiliations":[],"preferred":false,"id":393756,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022473,"text":"70022473 - 2000 - Soil organic matter characteristics in size fractions of water-stable aggregates and ultrasonically-dispersed particles","interactions":[],"lastModifiedDate":"2012-03-12T17:19:44","indexId":"70022473","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Soil organic matter characteristics in size fractions of water-stable aggregates and ultrasonically-dispersed particles","docAbstract":"[No abstract available]","largerWorkTitle":"ACS Division of Environmental Chemistry, Preprints","language":"English","issn":"00933066","usgsCitation":"Choate, L., Ranville, J., Thorn, K.A., Macalady, D., and Bunge, A., 2000, Soil organic matter characteristics in size fractions of water-stable aggregates and ultrasonically-dispersed particles, <i>in</i> ACS Division of Environmental Chemistry, Preprints, v. 40, no. 2, p. 118-120.","startPage":"118","endPage":"120","numberOfPages":"3","costCenters":[],"links":[{"id":230501,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9213e4b08c986b319ca4","contributors":{"authors":[{"text":"Choate, L.M.","contributorId":58045,"corporation":false,"usgs":true,"family":"Choate","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":393753,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ranville, J. F.","contributorId":54245,"corporation":false,"usgs":true,"family":"Ranville","given":"J. F.","affiliations":[],"preferred":false,"id":393752,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thorn, K. A.","contributorId":33294,"corporation":false,"usgs":true,"family":"Thorn","given":"K.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":393751,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Macalady, D.L.","contributorId":76468,"corporation":false,"usgs":true,"family":"Macalady","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":393754,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bunge, A.L.","contributorId":100144,"corporation":false,"usgs":true,"family":"Bunge","given":"A.L.","email":"","affiliations":[],"preferred":false,"id":393755,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70022601,"text":"70022601 - 2000 - Emplacement temperatures of the November 22, 1994 nuee ardente deposits, Merapi Volcano, Java","interactions":[],"lastModifiedDate":"2015-05-12T14:06:15","indexId":"70022601","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Emplacement temperatures of the November 22, 1994 nuee ardente deposits, Merapi Volcano, Java","docAbstract":"<p><span>A study of emplacement temperatures was carried out for the largest of the 22 November 1994 nu&eacute;e ardente deposits at Merapi Volcano, based mainly on the response of plastic and woody materials subjected to the hot pyroclastic current and the deposits, and to some extent on eyewitness observations. The study emphasizes the Turgo&ndash;Kaliurang area in the distal part of the area affected by the nu&eacute;e ardente, where nearly 100 casualties occurred. The term&nbsp;</span><i>nu&eacute;e ardente</i><span>&nbsp;as used here includes channeled block-and-ash flows, and associated ash-clouds of surge and fallout origins. The emplacement temperature of the 8&nbsp;m thick channeled block-and-ash deposit was relatively high, &sim;550&deg;C, based mainly on eyewitness reports of visual thermal radiance. Emplacement temperatures for ash-cloud deposits a few cm thick were deduced from polymer objects collected at Turgo and Kaliurang. Most polymers do not display a sharp melting range, but polyethylene terephthalate used in water bottles melts between 245 and 265&deg;C, and parts of the bottles that had been deformed during fabrication molding turn a milky color at 200&deg;C. The experimental evidence suggests that deposits in the Turgo area briefly achieved a maximum temperature near 300&deg;C, whereas those near Kaliurang were &lt;200&deg;C. Maximum ash deposit temperatures occurred in fallout with a local source in the channeled block-and-ash flow of the Boyong river valley; the surge deposit was cooler (&sim;180&deg;C) due to entrainment of cool air and soils, and tree singe-zone temperatures were around 100&deg;C.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0377-0273(00)00146-3","issn":"03770273","usgsCitation":"Voight, B., and Davis, M., 2000, Emplacement temperatures of the November 22, 1994 nuee ardente deposits, Merapi Volcano, Java: Journal of Volcanology and Geothermal Research, v. 100, no. 1-4, p. 371-377, https://doi.org/10.1016/S0377-0273(00)00146-3.","productDescription":"7 p.","startPage":"371","endPage":"377","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":230691,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"100","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0916e4b0c8380cd51dca","contributors":{"authors":[{"text":"Voight, B.","contributorId":16575,"corporation":false,"usgs":true,"family":"Voight","given":"B.","affiliations":[],"preferred":false,"id":394211,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Davis, M.J.","contributorId":96718,"corporation":false,"usgs":true,"family":"Davis","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":394212,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70022545,"text":"70022545 - 2000 - Environmental geochemistry at the global scale","interactions":[],"lastModifiedDate":"2021-09-01T14:25:49.894152","indexId":"70022545","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2545,"text":"Journal of the Geological Society","active":true,"publicationSubtype":{"id":10}},"title":"Environmental geochemistry at the global scale","docAbstract":"Land degradation and pollution caused by population pressure and economic development pose a threat to the sustainability of the Earth's surface, especially in tropical regions where a long history of chemical weathering has made the surface environment particularly fragile. Systematic baseline geochemical data provide a means of monitoring the state of the environment and identifying problem areas. Regional surveys have already been carried out in some countries, and with increased national and international funding they can be extended to cover the rest of the land surface of the globe. Preparations have been made, under the auspices of the IUGS, for the establishment of just such an integrated global database.","language":"English","publisher":"Geological Society of London","doi":"10.1144/jgs.157.4.837","usgsCitation":"Plant, J., Smith, D., Smith, B., and Williams, L., 2000, Environmental geochemistry at the global scale: Journal of the Geological Society, v. 157, no. 4, p. 837-849, https://doi.org/10.1144/jgs.157.4.837.","productDescription":"13 p.","startPage":"837","endPage":"849","numberOfPages":"13","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":479162,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://nora.nerc.ac.uk/id/eprint/19087/1/GeoscienceAbst.pdf","text":"External Repository"},{"id":230467,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"157","issue":"4","noUsgsAuthors":false,"publicationDate":"2022-06-06","publicationStatus":"PW","scienceBaseUri":"505a09c5e4b0c8380cd52062","contributors":{"authors":[{"text":"Plant, J.","contributorId":7445,"corporation":false,"usgs":true,"family":"Plant","given":"J.","email":"","affiliations":[],"preferred":false,"id":394022,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, D.","contributorId":60978,"corporation":false,"usgs":true,"family":"Smith","given":"D.","affiliations":[],"preferred":false,"id":394025,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, B.","contributorId":53740,"corporation":false,"usgs":true,"family":"Smith","given":"B.","affiliations":[],"preferred":false,"id":394024,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Williams, L.","contributorId":9421,"corporation":false,"usgs":true,"family":"Williams","given":"L.","affiliations":[],"preferred":false,"id":394023,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70022534,"text":"70022534 - 2000 - Bed material transport in the Virgin River, Utah","interactions":[],"lastModifiedDate":"2018-03-21T14:25:25","indexId":"70022534","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Bed material transport in the Virgin River, Utah","docAbstract":"<p><span>Detailed information concerning the rate and particle size distribution of bed material transport by streamflows can be very difficult and expensive to obtain, especially where peak streamflows are brief and bed material is poorly sorted, including some very large boulders. Such streams, however, are common in steep, arid watersheds. Any computational approach must consider that (1) only the smaller particle sizes present on the streambed move even during large floods and (2) the largest bed particles exert a significant form drag on the flow. Conventional methods that rely on a single particle size to estimate the skin friction shear stress acting on the mobile fraction of the bed material perform poorly. Instead, for this study, the skin friction shear stress was calculated for the observed range of streamflows by calculating the form drag exerted on the reach‐averaged flow field by all particle sizes. Suspended and bed load transported rates computed from reach‐averaged skin friction shear stress are in excellent agreement with measured transport rates. The computed mean annual bed material load, including both bed load and suspended load, of the East Fork Virgin River for the water years 1992‐1996 was approximately 1.3×10&nbsp;</span><sup>5</sup><span><span>&nbsp;</span>t. A large portion of the bed material load consists of sand‐sized particles, 0.062–1.0 mm in diameter, that are transported in suspension. Such particles, however, constituted only 10% of the surface bed material and less than 25% of the subsurface bed material. The mean annual quantity of bed load transported was 1060 t/yr with a median size of 15 mm.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/1999WR900257","usgsCitation":"Andrews, E., 2000, Bed material transport in the Virgin River, Utah: Water Resources Research, v. 36, no. 2, p. 585-596, https://doi.org/10.1029/1999WR900257.","productDescription":"12 p.","startPage":"585","endPage":"596","numberOfPages":"1","costCenters":[],"links":[{"id":487329,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/1999wr900257","text":"Publisher Index Page"},{"id":230880,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Virgin River","volume":"36","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f03be4b0c8380cd4a678","contributors":{"authors":[{"text":"Andrews, E.D.","contributorId":13922,"corporation":false,"usgs":true,"family":"Andrews","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":393976,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70195478,"text":"70195478 - 2000 - Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain","interactions":[],"lastModifiedDate":"2018-02-16T12:48:28","indexId":"70195478","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"2000 Annual Meeting Transactions of the Society for Mining, Metallurgy, and Exploration (SME), Proceedings","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Society for Mining, Metallurgy, and Exploration","usgsCitation":"Warwick, P.D., SanFilipo, J., Willett, J.C., and Podwysocki, S., 2000, Coal geology, resources and coal-bed methane potential for the U.S. Gulf Coastal Plain, <i>in</i> 2000 Annual Meeting Transactions of the Society for Mining, Metallurgy, and Exploration (SME), Proceedings, 7 p.","productDescription":"7 p.","costCenters":[],"links":[{"id":351723,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":351722,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://transactions.smenet.org/"}],"country":"United States","otherGeospatial":"Gulf of Mexico Coastal Plain","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff104ce4b0da30c1bfd280","contributors":{"authors":[{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":728792,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"SanFilipo, John R. 0000-0002-8739-5628 jsan@usgs.gov","orcid":"https://orcid.org/0000-0002-8739-5628","contributorId":2385,"corporation":false,"usgs":true,"family":"SanFilipo","given":"John R.","email":"jsan@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":728793,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Willett, Jason C. 0000-0002-7598-3174 jwillett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-3174","contributorId":3516,"corporation":false,"usgs":true,"family":"Willett","given":"Jason","email":"jwillett@usgs.gov","middleInitial":"C.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":728794,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Podwysocki, Steven M.","contributorId":18023,"corporation":false,"usgs":true,"family":"Podwysocki","given":"Steven M.","affiliations":[],"preferred":false,"id":728795,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70023209,"text":"70023209 - 2000 - Distribution of the spotted bat (Euderma maculatum) in Nevada, including notes on reproduction","interactions":[],"lastModifiedDate":"2022-08-10T17:27:29.438515","indexId":"70023209","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3451,"text":"Southwestern Naturalist","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Distribution of the spotted bat (<i>Euderma maculatum</i>) in Nevada, including notes on reproduction","title":"Distribution of the spotted bat (Euderma maculatum) in Nevada, including notes on reproduction","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Southwest Association of Naturalists","doi":"10.2307/3672842","issn":"00384909","usgsCitation":"Geluso, K., 2000, Distribution of the spotted bat (Euderma maculatum) in Nevada, 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,{"id":70196247,"text":"70196247 - 2000 - Survival and brood rearing ecology of emperor geese","interactions":[],"lastModifiedDate":"2018-03-28T12:05:37","indexId":"70196247","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":21,"text":"Thesis"},"publicationSubtype":{"id":28,"text":"Thesis"},"title":"Survival and brood rearing ecology of emperor geese","docAbstract":"<p><span>Emperor Geese (<i>Chen canagica</i>) breed on the Yukon-Kuskokwim Delta in an area inhabited by three other goose species. Whereas populations of other geese increased since the mid 1980s, Emperor Goose numbers remained low. Because survival and habitat selection by broods of Emeperor Geese had not been studied previously and numbers of predatory Glaucous Gulls (<i>Larus hyperboreus</i>) had recently increased, I studied brood rearing ecology of Emperor Geese during 1993-1996 to assess whether this seasonal period could be limiting population growth. Survival of goslings to 30 days varied among years from 0.32 to 0.70 and was primarily influenced by mortality during the first five days after hatch. Other goose species with similar rates of gosling survival are increasing rapidly. Survival of Emperor Goose goslings was lowest in 1994, when unusually heavy rainfall occurred during early brood rearing. Using a long-term data set from Izembek National Wildlife Refuge, sizes of families in fall (n=23 years) were related to rainfall during early brood rearing. Gosling survival was lower and gull disturbance of broods greater in 1993-1994 than in 1995-1996. Although goslings wer commonly consumed by Glaucous Gulls, gull diets during 1993 were similar to those observed in the 1970s. Across a broad scale, broods of Emperor Geese (n=56) strongly selected habitats dominated by<i> Carex subspathaceae, Carex ramenskii</i>, and unvegetated areas interspersed among these forage species, as determined from telemetry. These selected habitats comprised one-third of all available habitat. Habitat selection by the composite goose community (dominated by Cackling Canada Geese [<i>Branta canadensis minima</i>]) was assessed by feces collections and differed substantially from that of Emperor Geese. Broods of Emperor Geese spent more time feeding during 1993-1996 than during an earlier study in 1985-1986. During 1994-1996, feeding rates of gosling and adult females was related more to total goose density than to Emperor Goose density. Although Cackling Canada Geese exhibited strongest selection of other habitats, their greater overall abundance resulted in numerical equivalence to Emperor Geese in habitats preferred by Emperor Geese. Interspecific competition for food has impacted behavior in Emperor Geese, which may impact growth and survival of juvenile geese.</span></p>","language":"English","publisher":"University of Alaska, Fairbanks","usgsCitation":"Schmutz, J.A., 2000, Survival and brood rearing ecology of emperor geese, 138 p.","productDescription":"138 p.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":352826,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":352825,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://hdl.handle.net/11122/4995"}],"publicComments":"PhD Dissertation, University of Alaska - Fairbanks","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff104be4b0da30c1bfd27c","contributors":{"authors":[{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":731866,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":23547,"text":"ofr99237 - 2000 - Survey of Lake Ontario bottom sediment off Rochester, New York, to define the extent of jettisoned World War II matériel and its potential for sediment contamination","interactions":[],"lastModifiedDate":"2020-12-17T13:16:08.109442","indexId":"ofr99237","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-237","title":"Survey of Lake Ontario bottom sediment off Rochester, New York, to define the extent of jettisoned World War II matériel and its potential for sediment contamination","docAbstract":"<p>Military-type matériel was recovered from the bottom of Lake Ontario near Rochester, N.Y., during bottom-trawl, fish-stock surveys at depths of 75 to 180 feet each year from 1978 through 1996. The recovered matériel included many shell-detonator nose cones (2 inches in diameter by about 3.5 inches long); several electronic components; one corroded box of detonators; a corrugated container of mercury-filled capsules; and corroded batteries. Most of the recovered matériel has been identified as defective components of shell detonators (proximity-fuze assemblies) that were jettisoned in the lake to protect them from discovery during World War II. </p><p>Side-scan SONAR, metal-detector, and ROV (remotely-operated-vehicle) surveys found no evidence of any large piles of matériel containing potentially hazardous, toxic, or polluting materials within the 17-square-mile study site. Many scattered magnetic anomalies were detected in this area, but chemical analysis of bottom sediment and of zebra- and quagga-mussel (Dreissena spp.) tissue indicate that the concentrations of mercury and other heavy metals are within the previously documented ranges for Lake Ontario sediment. The failure of ROV videos and of SCUBA-diver surveys and probes of the lake bottom to locate any debris indicates that most, if not all, of the debris is scattered and buried under a layer of fine-grained sediment and, possibly, mussels.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99237","issn":"0094-9140","usgsCitation":"Kennedy, G., and Kappel, W.M., 2000, Survey of Lake Ontario bottom sediment off Rochester, New York, to define the extent of jettisoned World War II matériel and its potential for sediment contamination: U.S. Geological Survey Open-File Report 99-237, v, 23 p., https://doi.org/10.3133/ofr99237.","productDescription":"v, 23 p.","numberOfPages":"28","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":52834,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0237/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":155809,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0237/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db6887c1","contributors":{"authors":[{"text":"Kennedy, Gregory","contributorId":28556,"corporation":false,"usgs":true,"family":"Kennedy","given":"Gregory","affiliations":[],"preferred":false,"id":190296,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kappel, William M. 0000-0002-2382-9757 wkappel@usgs.gov","orcid":"https://orcid.org/0000-0002-2382-9757","contributorId":1074,"corporation":false,"usgs":true,"family":"Kappel","given":"William","email":"wkappel@usgs.gov","middleInitial":"M.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":190295,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70182266,"text":"70182266 - 2000 - Thermal exposure of wild juvenile fall Chinook salmon in Little Goose Reservoir, Snake River","interactions":[],"lastModifiedDate":"2017-02-22T12:08:43","indexId":"70182266","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Thermal exposure of wild juvenile fall Chinook salmon in Little Goose Reservoir, Snake River","docAbstract":"<p>No abstract available&nbsp;</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the 15th international symposium on biotelemetry","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"15th international symposium on biotelemetry","language":"English","publisher":"International Society of Biotelemetry","usgsCitation":"Venditti, D., Kraut, J., and Rondorf, D., 2000, Thermal exposure of wild juvenile fall Chinook salmon in Little Goose Reservoir, Snake River, <i>in</i> Proceedings of the 15th international symposium on biotelemetry, p. 313-332.","productDescription":"20 p. ","startPage":"313","endPage":"332","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":335949,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Little Goose Reservoir ","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -118.01651000976562,\n              46.599449464868584\n            ],\n            [\n              -118.05290222167969,\n              46.592843997427416\n            ],\n            [\n              -118.04534912109376,\n              46.57019056757178\n            ],\n            [\n              -117.83729553222655,\n              46.5782147398224\n            ],\n            [\n              -117.75489807128906,\n              46.64755071082884\n            ],\n            [\n              -117.79266357421874,\n              46.65226421890328\n            ],\n            [\n              -117.87918090820312,\n              46.630107159317205\n            ],\n            [\n              -117.91007995605469,\n              46.596146831795764\n            ],\n            [\n              -118.00346374511719,\n              46.59897767246807\n            ],\n            [\n              -118.01651000976562,\n              46.599449464868584\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58aeb13fe4b01ccd54f9ee3a","contributors":{"editors":[{"text":"Eiler, J.H.","contributorId":182031,"corporation":false,"usgs":false,"family":"Eiler","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":670300,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Alcorn, D.J.","contributorId":182030,"corporation":false,"usgs":false,"family":"Alcorn","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":670301,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Neuman, M.R.","contributorId":113681,"corporation":false,"usgs":true,"family":"Neuman","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":670302,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Venditti, D.A.","contributorId":74536,"corporation":false,"usgs":true,"family":"Venditti","given":"D.A.","affiliations":[],"preferred":false,"id":670297,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kraut, J.M.","contributorId":46252,"corporation":false,"usgs":true,"family":"Kraut","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":670298,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rondorf, D.W.","contributorId":80789,"corporation":false,"usgs":true,"family":"Rondorf","given":"D.W.","email":"","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":670299,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1000885,"text":"1000885 - 2000 - Using linear models with correlated errors to analyze changes in abundance of Lake Michigan fishes: 1973-1992","interactions":[],"lastModifiedDate":"2016-05-23T13:31:07","indexId":"1000885","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Using linear models with correlated errors to analyze changes in abundance of Lake Michigan fishes: 1973-1992","docAbstract":"<p><span>We examined annual changes in relative abundance of Lake Michigan fishes using linear models with correlated errors in space and time. Abundance of bloater (</span><i>Coregonus hoyi</i><span>), deepwater sculpin (</span><i>Myoxocephalus thompsoni</i><span>), slimy sculpin (</span><i>Cottus cognatus</i><span>), alewife (</span><i>Alosa pseudoharengus</i><span>), and rainbow smelt (</span><i>Osmerus mordax</i><span>) was monitored with bottom trawls at 10 discrete depths (between 18 and 110 m) off eight fixed ports from 1973 to 1992. The model describing abundance included fixed effects of year, port, depth, and interaction terms as well as quadratic and cubic effects of year and depth because changes in abundance were not strictly linear. Observed temporal trends in abundance varied with species and depth. Additionally, trends in alewife and slimy sculpin abundances depended on port. Cubic trends in the abundance of bloater and quadratic trends in deepwater sculpin and rainbow smelt abundances were similar among ports, permitting lakewide inferences for these species. Mean bloater abundance was low throughout the 1970s, increased during the 1980s, and reached high levels by 1990. Mean abundances of deepwater sculpin and rainbow smelt increased from 1973 to the mid-1980s and declined thereafter. The linear model with correlated errors can be readily applied to repeated-measures data from other fixed-station fishery surveys and is appropriate for data exhibiting spatial and temporal autocorrelations.</span></p>","language":"English","publisher":"NRC Research Press","doi":"10.1139/f00-020","usgsCitation":"Fabrizio, M.C., Raz, J., and Bandekar, R.R., 2000, Using linear models with correlated errors to analyze changes in abundance of Lake Michigan fishes: 1973-1992: Canadian Journal of Fisheries and Aquatic Sciences, v. 57, no. 4, p. 775-788, https://doi.org/10.1139/f00-020.","productDescription":"14 p.","startPage":"775","endPage":"788","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":133508,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"57","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db602ed3","contributors":{"authors":[{"text":"Fabrizio, Mary C.","contributorId":77471,"corporation":false,"usgs":true,"family":"Fabrizio","given":"Mary","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":309736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raz, Jonathan","contributorId":8812,"corporation":false,"usgs":true,"family":"Raz","given":"Jonathan","email":"","affiliations":[],"preferred":false,"id":309735,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bandekar, Ramanath R.","contributorId":8057,"corporation":false,"usgs":true,"family":"Bandekar","given":"Ramanath","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":309734,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1000884,"text":"1000884 - 2000 - Asymmetric hybridization and introgression between pink salmon and chinook salmon in the Laurentian Great Lakes","interactions":[],"lastModifiedDate":"2013-02-05T14:03:54","indexId":"1000884","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Asymmetric hybridization and introgression between pink salmon and chinook salmon in the Laurentian Great Lakes","docAbstract":"Among Pacific salmon collected in the St. Marys River, five natural hybrids of pink salmon <i>Oncorhynchus gorbuscha</i> and chinook salmon <i>Oncorhynchus tshawytscha</i> and one suspected backcross have been detected using morphologic, meristic, and color evidence.  One allozyme (LDH, l-lactate dehydrogenase from muscle) and one nuclear DNA locus (growth hormone) for which species-specific fixed differences exist were analyzed to detect additional hybrids and to determine if introgression had occurred.  Restriction fragment length polymorphism of mitochondrial DNA (mtDNA) was used to identify the maternal parent of each hybrid.  Evidence of introgression was found among the five previously identified hybrids.  All hybrid specimens had chinook salmon mtDNA, indicating that hybridization between chinook salmon and pink salmon in the St. Marys River is asymmetric and perhaps unidirectional.  Ecological, physiological, and sexual selection forces may contribute to this asymmetric hybridization. Introgression between these highly differentiated species has implications for management, systematics, and conservation of Pacific salmon.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transactions of the American Fisheries Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Taylor & Francis","publisherLocation":"London, UK","doi":"10.1577/1548-8659(2000)129<0670:AHAIBP>2.3.CO;2","usgsCitation":"Rosenfield, J.A., Todd, T., and Greil, R., 2000, Asymmetric hybridization and introgression between pink salmon and chinook salmon in the Laurentian Great Lakes: Transactions of the American Fisheries Society, v. 129, no. 3, p. 670-679, https://doi.org/10.1577/1548-8659(2000)129<0670:AHAIBP>2.3.CO;2.","productDescription":"9 p.","startPage":"670","endPage":"679","numberOfPages":"9","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":479242,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/2027.42/142073","text":"External Repository"},{"id":133587,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267030,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/1548-8659(2000)129<0670:AHAIBP>2.3.CO;2"}],"volume":"129","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aaee4b07f02db66c7e7","contributors":{"authors":[{"text":"Rosenfield, Jonathan A.","contributorId":15907,"corporation":false,"usgs":true,"family":"Rosenfield","given":"Jonathan","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":309731,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Todd, Thomas","contributorId":52469,"corporation":false,"usgs":true,"family":"Todd","given":"Thomas","affiliations":[],"preferred":false,"id":309733,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Greil, Roger","contributorId":25837,"corporation":false,"usgs":true,"family":"Greil","given":"Roger","email":"","affiliations":[],"preferred":false,"id":309732,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":1001013,"text":"1001013 - 2000 - Helminths in an intensively stocked population of lake trout, Salvelinus namaycush, from Lake Huron","interactions":[],"lastModifiedDate":"2022-08-30T15:52:52.948552","indexId":"1001013","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2414,"text":"Journal of Parasitology","active":true,"publicationSubtype":{"id":10}},"title":"Helminths in an intensively stocked population of lake trout, Salvelinus namaycush, from Lake Huron","docAbstract":"<p>Eighty stocked lake trout<span>&nbsp;</span><i>Salvelinus namaycush</i><span>&nbsp;</span>(Salmonidae), collected from 2 locations in Lake Huron in May 1995, were examined for parasites. The parasite fauna of this top predator in Lake Huron was characterized by only 6 helminth species.<span>&nbsp;</span><i>Echinorhynchus salmonis</i><span>&nbsp;</span>infected all lake trout with a mean intensity of 163.9. The intensity of this acanthocephalan species significantly increased with host length and weight.<span>&nbsp;</span><i>Eubothrium salvelini</i><span>&nbsp;</span>infected 78 lake trout with a maximum number of 81 scoleces counted.<span>&nbsp;</span><i>Diplostomum</i><span>&nbsp;</span>sp.,<span>&nbsp;</span><i>Cyathocephalus truncatus, Capillaria salvelini,</i><span>&nbsp;</span>and<span>&nbsp;</span><i>Neoechinorhynchus</i><span>&nbsp;</span>sp. infrequently infected lake trout. The low parasite species richness in these lake trout is believed to be due to their large size at stocking and to the loss of historical enzootic host–parasite relationships that followed the absence of this fish species in Lake Huron for 26 yr.</p>","language":"English","publisher":"Allen Press","doi":"10.1645/0022-3395(2000)086[0639:HIAISP]2.0.CO;2","usgsCitation":"Muzzall, P.M., and Bowen, C.A., 2000, Helminths in an intensively stocked population of lake trout, Salvelinus namaycush, from Lake Huron: Journal of Parasitology, v. 86, no. 3, p. 639-642, https://doi.org/10.1645/0022-3395(2000)086[0639:HIAISP]2.0.CO;2.","productDescription":"3 p.","startPage":"639","endPage":"642","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":128884,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"Michigan, Ontario","otherGeospatial":"Lake 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