Approximately 170 Mgal/d (million gallons per day) of ground- and surface-water was withdrawn from the Barataria-Terrebonne Basins in 1995. Of this amount, surface water accounted for 64 percent ( 110 MgaVd) of the total withdrawal rates in the basins. The largest surface-water withdrawal rates were from Bayou Lafourche ( 40 Mgal/d), Bayou Boeuf ( 14 MgaVd), and the Gulf Intracoastal Waterway (4.2 Mgal/d). The largest ground-water withdrawal rates were from the Mississippi River alluvial aquifer (29 Mgal/d), the Gonzales-New Orleans aquifer (9.5 Mgal/d), and the Norco aquifer (3.6 MgaVd).
\n\nThe amounts of water withdrawn in the basins in 1995 differed by category of use. Public water suppliers within the basins withdrew 41 Mgal/d of water. The five largest public water suppliers in the basins withdrew 30 Mgal/d of surface water: Terrebonne Waterworks District 1 withdrew the largest amount, almost 15 MgaVd. Industrial facilities withdrew 88 Mgal/d, fossil-fuel plants withdrew 4.7 MgaVd, and commercial facilities withdrew 0.67 MgaVd. Aggregate water-withdrawal rates, compiled by parish for aquaculture (37 Mgal/d), livestock (0.56 Mgal/d), rural domestic (0.44 MgaVd), and irrigation uses (0.54 MgaVd), totaled about 38 MgaVd in the basins. Ninety-five percent of aquaculture withdrawal rates, primarily for crawfish and alligator farming, were from surface-water sources.
\n\n>br>\n\nTotal water-withdrawal rates increased 221 percent from 1960–95. Surface-water withdrawal rates have increased by 310 percent, and ground-water withdrawal rates have increased by 133 percent. The projection for the total water-withdrawal rates in 2020 is 220 MgaVd, an increase of 30 percent from 1995. Surface-water withdrawal rates would account for 59 percent of the total, or 130 Mgal/d. Surface-water withdrawal rates are projected to increase by 20 percent from 1995 to 2020.
\n\nAnalysis of water-quality data from the Mississippi River indicates that the main threats to surface water resources are from the herbicide atrazine and excessive nutrients. Atrazine concentrations in the Mississippi River at Baton Rouge briefly exceed the U.S. Environmental Protection Agency maximum contaminant level of 3.0 micrograms per liter during periods in the late spring and early summer. Trace metals in bottom material collected from Bayou Lafourche indicate that the reach of Bayou Lafourche from Donaldsonville to Golden Meadow is adversely affected by low-level contamination. Dissolved nitrate had a mean concentration of 1.4 milligrams per liter in the Mississippi River near Bayou Lafourche and can contribute to excessive plant growth.
\n\nLong-term salinity records near Bayou Lafourche indicate no pronounced trends, with the exception of the Gulf Intracoastal Waterway at Houma. At this site, salinities remained low until 1961, when the Gulf Intracoastal Waterway was connected to the Gulf of Mexico by the Houma Navigation Canal. The sources of saltwater are variable. Some saltwater has entered Bayou Lafourche south of the Gulf Intracoastal Waterway; at other times saltwater has moved up the Houma Navigation Canal and has flowed east in the Gulf Intracoastal Waterway, north into Company Canal, and southeast in Bayou Lafourche towards Larose, Louisiana.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr98632","issn":"0094-9140","collaboration":"Prepared in cooperation with the Barataria-Terrebonne National Estuary Program","usgsCitation":"Johnson-Thibaut, P.M., Demcheck, D.K., Swarzenski, C.M., and Ensminger, P.A., 1998, Water use and quality of fresh surface-water resources in the Barataria-Terrebonne Basins, Louisiana: U.S. Geological Survey Open-File Report 98-632, Report: iv, 47 p.; 1 Map: 24.00 x 18.00 inches, https://doi.org/10.3133/ofr98632.","productDescription":"Report: iv, 47 p.; 1 Map: 24.00 x 18.00 inches","numberOfPages":"52","onlineOnly":"Y","costCenters":[{"id":369,"text":"Louisiana Water Science Center","active":true,"usgs":true}],"links":[{"id":430164,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_16372.htm","linkFileType":{"id":5,"text":"html"}},{"id":283814,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1998/ofr98-632/pdf/of1998-632_plate1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":283812,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1998/ofr98-632/","linkFileType":{"id":1,"text":"pdf"}},{"id":283813,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1998/ofr98-632/pdf/of1998-632.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":283816,"rank":4,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Barataria-Terrebonne Basins","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.81954122716522,\n 30.762616503019416\n ],\n [\n -91.81954122716522,\n 29.036394388511\n ],\n [\n -89.743022989434,\n 29.036394388511\n ],\n [\n -89.743022989434,\n 30.762616503019416\n ],\n [\n -91.81954122716522,\n 30.762616503019416\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f4e4b07f02db5f004f","contributors":{"authors":[{"text":"Johnson-Thibaut, Penny M.","contributorId":10830,"corporation":false,"usgs":true,"family":"Johnson-Thibaut","given":"Penny","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":187941,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Demcheck, Dennis K. 0000-0003-2981-078X ddemchec@usgs.gov","orcid":"https://orcid.org/0000-0003-2981-078X","contributorId":3273,"corporation":false,"usgs":true,"family":"Demcheck","given":"Dennis","email":"ddemchec@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":187939,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swarzenski, Christopher M. 0000-0001-9843-1471 cswarzen@usgs.gov","orcid":"https://orcid.org/0000-0001-9843-1471","contributorId":656,"corporation":false,"usgs":true,"family":"Swarzenski","given":"Christopher","email":"cswarzen@usgs.gov","middleInitial":"M.","affiliations":[{"id":369,"text":"Louisiana Water Science Center","active":true,"usgs":true},{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":187938,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ensminger, Paul A. 0000-0002-0536-0369 paensmin@usgs.gov","orcid":"https://orcid.org/0000-0002-0536-0369","contributorId":4754,"corporation":false,"usgs":true,"family":"Ensminger","given":"Paul","email":"paensmin@usgs.gov","middleInitial":"A.","affiliations":[{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true}],"preferred":true,"id":187940,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70210058,"text":"70210058 - 1998 - Geographic trend in mercury measured in common loon feathers and blood","interactions":[],"lastModifiedDate":"2020-05-12T18:43:56.981064","indexId":"70210058","displayToPublicDate":"1998-02-28T13:31:13","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Geographic trend in mercury measured in common loon feathers and blood","docAbstract":"The common loon (Gavia immer) is a high‐trophic‐level, long‐lived, obligate piscivore at risk from elevated levels of Hg through biomagnification and bioaccumulation. From 1991 to 1996 feather (n = 455) and blood (n = 381) samples from adult loons were collected between June and September in five regions of North America: Alaska, northwestern United States, Upper Great Lakes, New England, and the Canadian Maritimes. Concentrations of Hg in adults ranged from 2.8 to 36.7 μg/g (fresh weight) in feathers and from 0.12 to 7.80 μg/g (wet weight) in whole blood. Blood Hg concentrations in 3 to 6‐week‐old juveniles ranged from 0.03 to 0.78 μg/g (wet weight) (n = 183). To better interpret exposure data, relationships between blood and feather Hg concentrations were examined among age and sex classes. Blood and feather Hg concentrations from the same individuals were significantly correlated and varied geographically (r2 ranged from 0.03 to 0.48). Blood and feather Hg correlated strongest in areas with the highest blood Hg levels, indicating a possible carryover of breeding season Hg that is depurated during winter remigial molt. Mean blood and feather Hg concentrations in males were significantly higher than concentrations in females for each region. The mean blood Hg concentration in adults was 10 times higher than that in juveniles, and feather Hg concentrations significantly increased over 1 to 4‐year periods in recaptured individuals. Geographic stratification indicates a significant increasing regional trend in adult and juvenile blood Hg concentrations from west to east. This gradient resembles U.S. Environmental Protection Agency‐modeled predictions of total anthropogenic Hg deposition across the United States. This gradient is clearest across regions. Within‐region blood Hg concentrations in adults and juveniles across nine sites of one region, the Upper Great Lakes, were less influenced by variations in geographic Hg deposition than by hydrology and lake chemistry. Loons breeding on low‐pH lakes in the Upper Great Lakes and in all lake types of northeastern North America are most at risk from Hg.
","language":"English","publisher":"Society of Environmental Toxicology and Chemistry","doi":"10.1002/etc.5620170206","usgsCitation":"Kaplan, J.D., Meyer, M.W., Reaman, P.S., Braselton, W.E., Major, A., Burgess, N., and Scheuhammer, A.M., 1998, Geographic trend in mercury measured in common loon feathers and blood: Environmental Toxicology and Chemistry, v. 17, no. 2, p. 173-183, https://doi.org/10.1002/etc.5620170206.","productDescription":"11 p.","startPage":"173","endPage":"183","costCenters":[],"links":[{"id":374704,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"Alaska, Maine, Michigan, Minnesota, Montana, New Brunswick, New Hampshire, Nova Scotia, Ontario, Washington, Wisconsin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -141.1083984375,\n 62.95522304515911\n ],\n [\n -146.46972656249997,\n 70.12542991464234\n ],\n [\n -150.6005859375,\n 70.52489722821652\n ],\n [\n -165.3662109375,\n 61.37567331572747\n ],\n [\n -150.205078125,\n 59.689926220143356\n ],\n [\n -147.9638671875,\n 60.13056361691419\n ],\n [\n -141.1083984375,\n 62.95522304515911\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.59643554687499,\n 47.50978034953473\n ],\n [\n -117.0703125,\n 47.50978034953473\n ],\n [\n -117.0703125,\n 48.980216985374994\n ],\n [\n -122.59643554687499,\n 48.980216985374994\n ],\n [\n -122.59643554687499,\n 47.50978034953473\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -115.99914550781249,\n 47.45037978769006\n ],\n [\n -113.6700439453125,\n 47.45037978769006\n ],\n [\n -113.6700439453125,\n 48.98742700601184\n ],\n [\n -115.99914550781249,\n 48.98742700601184\n ],\n [\n -115.99914550781249,\n 47.45037978769006\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -97.20703125,\n 45.166547157856016\n ],\n [\n -85.36376953125,\n 45.166547157856016\n ],\n [\n -85.36376953125,\n 48.980216985374994\n ],\n [\n -97.20703125,\n 48.980216985374994\n ],\n [\n -97.20703125,\n 45.166547157856016\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -78.77197265625,\n 44.19795903948531\n ],\n [\n -75.91552734375,\n 44.19795903948531\n ],\n [\n -75.91552734375,\n 46.30140615437332\n ],\n [\n -78.77197265625,\n 46.30140615437332\n ],\n [\n -78.77197265625,\n 44.19795903948531\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -74.55322265625,\n 43.24520272203356\n ],\n [\n -62.13867187499999,\n 43.24520272203356\n ],\n [\n -62.13867187499999,\n 47.17477833929903\n ],\n [\n -74.55322265625,\n 47.17477833929903\n ],\n [\n -74.55322265625,\n 43.24520272203356\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"1998-02-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Kaplan, Joseph D.","contributorId":224648,"corporation":false,"usgs":false,"family":"Kaplan","given":"Joseph","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":788944,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Meyer, Michael W.","contributorId":149111,"corporation":false,"usgs":false,"family":"Meyer","given":"Michael","email":"","middleInitial":"W.","affiliations":[{"id":17645,"text":"Wisconsin Department of Natural Resources, Rhinelander, WI","active":true,"usgs":false}],"preferred":false,"id":788945,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reaman, Peter S.","contributorId":224649,"corporation":false,"usgs":false,"family":"Reaman","given":"Peter","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":788946,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Braselton, W. Emmett","contributorId":176143,"corporation":false,"usgs":false,"family":"Braselton","given":"W.","email":"","middleInitial":"Emmett","affiliations":[],"preferred":false,"id":788947,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Major, A.","contributorId":9846,"corporation":false,"usgs":true,"family":"Major","given":"A.","email":"","affiliations":[],"preferred":false,"id":788948,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Burgess, Neil","contributorId":224650,"corporation":false,"usgs":false,"family":"Burgess","given":"Neil","email":"","affiliations":[],"preferred":false,"id":788949,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Scheuhammer, Anton M.","contributorId":15477,"corporation":false,"usgs":true,"family":"Scheuhammer","given":"Anton","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":788950,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70220367,"text":"70220367 - 1998 - Remote sensing in the USGS Mineral Resource Surveys Program in the eastern United States","interactions":[],"lastModifiedDate":"2021-05-06T20:05:24.422036","indexId":"70220367","displayToPublicDate":"1998-01-01T16:05:02","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":8585,"text":"Information Handout","active":false,"publicationSubtype":{"id":6}},"title":"Remote sensing in the USGS Mineral Resource Surveys Program in the eastern United States","docAbstract":"Mineral deposits commonly occur within special geologic units or structures, such as fault zones, which can be detected and mapped from aircraft and satellite images. Modern techniques analyze multispectral images that record the way solar energy is reflected or emitted by the materials exposed at the Earth's surface. In sparsely vegetated regions, including most of the Western United States, mineral composition is determined directly by analyzing the spectral properties of rock outcrops. In more densely vegetated terrain, such as the Eastern United States, rock and soil composition can be determined directly in manmade exposures, such as plowed fields and construction sites, or much more general determinations can be made indirectly by analyzing the distribution and apparent health of naturally occurring plants. The association of certain plants with particular rock or soil types has been known for decades. For example, coniferous trees grow preferentially on well-drained sandy soil, whereas deciduous trees dominate on shaly bedrock. These two forest types reflect solar radiation quite differently and, therefore, are distinguished readily in conventional aerial photographs. More subtle plant-bedrock associations require digital multispectral image analysis to infer compositional information from the spectral characteristics of the forest canopy.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70220367","usgsCitation":"Rowan, L.C., 1998, Remote sensing in the USGS Mineral Resource Surveys Program in the eastern United States: Information Handout, HTML Document, https://doi.org/10.3133/70220367.","productDescription":"HTML Document","costCenters":[],"links":[{"id":385512,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":385511,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/info/rowan/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rowan, Lawrence C.","contributorId":58629,"corporation":false,"usgs":true,"family":"Rowan","given":"Lawrence","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":815267,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70047752,"text":"70047752 - 1998 - Hydrology and snowmelt simulation of Snyderville Basin, Park City, and adjacent areas, Summit County, Utah","interactions":[],"lastModifiedDate":"2017-01-05T17:07:47","indexId":"70047752","displayToPublicDate":"1998-01-01T15:32:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"seriesTitle":{"id":294,"text":"Technical Publication","active":false,"publicationSubtype":{"id":4}},"seriesNumber":"115","title":"Hydrology and snowmelt simulation of Snyderville Basin, Park City, and adjacent areas, Summit County, Utah","docAbstract":"Increasing residential and commercial development is placing increased demands on the ground- and surface-water resources of Snyderville Basin, Park City, and adjacent areas in the southwestern corner of Summit County, Utah. Data collected during 1993-95 were used to assess the quantity and quality of the water resources in the study area.
Ground water within the study area is present in consolidated rocks and unconsolidated valley fill. The complex geology makes it difficult to determine the degree of hydraulic connection between different blocks of consolidated rocks. Increased ground-water withdrawal during 1983- 95 generally has not affected ground-water levels. Ground-water withdrawal in some areas, however, caused seasonal fluctuations and a decline in ground-water levels from 1994 to 1995, despite greater-than-normal recharge in the spring of 1995.
Ground water generally has a dissolved-solids concentration that ranges from 200 to 600 mg/L. Higher sulfate concentrations in water from wells and springs near Park City and in McLeod Creek and East Canyon Creek than in other parts of the study area are the result of mixing with water that discharges from the Spiro Tunnel. The presence of chloride in water from wells and springs near Park City and in streams and wells near Interstate Highway 80 is probably caused by the dissolution of applied road salt. Chlorofluorocarbon analyses indicate that even though water levels rise within a few weeks of snowmelt, the water took 15 to 40 years to move from areas of recharge to areas of discharge.
Water budgets for the entire study area and for six subbasins were developed to better understand the hydrologic system. Ground-water recharge from precipitation made up about 80 percent of the ground-water recharge in the study area. Ground-water discharge to streams made up about 40 percent of the surface water in the study area and ground-water discharge to springs and mine tunnels made up about 25 percent. Increasing use of ground water has the potential to decrease discharge to streams and affect both the amount and quality of surface water in the study area. A comparison of the 1995 to 1994 water budgets emphasizes that the hydrologic system in the study area is very dependent upon the amount of annual precipitation. Although precipitation on the study area was much greater in 1995 than in 1994, most of the additional water resulted in additional streamflow and spring discharge that flows out of the study area. Ground-water levels and groundwater discharge are dependent upon annual precipitation and can vary substantially from year to year.
Snowmelt runoff was simulated to assist in estimating ground-water recharge to consolidated rock and unconsolidated valley fill. A topographically distributed snowmelt model controlled by independent inputs of net radiation, meteorological parameters, and snowcover properties was used to calculate the energy and mass balance of the snowcover.
","language":"English","publisher":"Utah Department of Natural Resources, Division of Water Rights","publisherLocation":"Salt Lake City, UT","collaboration":"Prepared by the United States Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights; Park City; Summit County; and the Weber Basin Water Conservancy District","usgsCitation":"Brooks, L.E., Mason, J.L., and Susong, D.D., 1998, Hydrology and snowmelt simulation of Snyderville Basin, Park City, and adjacent areas, Summit County, Utah: Technical Publication 115, vi, 84 p.","productDescription":"vi, 84 p.","numberOfPages":"93","costCenters":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"links":[{"id":279943,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70047752/report.pdf"},{"id":279942,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70047752/report-thumb.jpg"},{"id":332236,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://www.waterrights.utah.gov/cgi-bin/libview.exe?Modinfo=Viewpub&LIBNUM=50-1-165"}],"scale":"100000","projection":"Universal Transverse Mercator projection","country":"United States","state":"Utah","county":"Summit County","city":"Park City","otherGeospatial":"East Canyon Creek;Mcleod Creek;Snyderville Basin;Spiro Tunnel","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.646973,40.599669 ], [ -111.646973,40.819739 ], [ -111.432945,40.819739 ], [ -111.432945,40.599669 ], [ -111.646973,40.599669 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"529dba1ce4b0516126f68cf3","contributors":{"authors":[{"text":"Brooks, Lynette E. 0000-0002-9074-0939 lebrooks@usgs.gov","orcid":"https://orcid.org/0000-0002-9074-0939","contributorId":2718,"corporation":false,"usgs":true,"family":"Brooks","given":"Lynette","email":"lebrooks@usgs.gov","middleInitial":"E.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":482893,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mason, James L.","contributorId":14397,"corporation":false,"usgs":true,"family":"Mason","given":"James","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":482894,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Susong, David D. ddsusong@usgs.gov","contributorId":1040,"corporation":false,"usgs":true,"family":"Susong","given":"David","email":"ddsusong@usgs.gov","middleInitial":"D.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":482892,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70074650,"text":"70074650 - 1998 - Metallogenesis and tectonics of major granitoid-hosted gold metallogenic belts in the Russian Far East and Alaska","interactions":[],"lastModifiedDate":"2014-01-30T15:57:00","indexId":"70074650","displayToPublicDate":"1998-01-01T15:32:00","publicationYear":"1998","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"Metallogenesis and tectonics of major granitoid-hosted gold metallogenic belts in the Russian Far East and Alaska","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Anatomy and textures of ore-bearing granitoids of Sikhote Alin (Primorye Region, Russia) and related mineralization: extended abstracts","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"conferenceTitle":"IUGS/UNESCO International Field Conference","conferenceDate":"1998-08-31T00:00:00","conferenceLocation":"Vladivostok, Russia","language":"English","publisher":"GeoForschungsZentrum Potsdam","publisherLocation":"Potsdam, Germany","usgsCitation":"Nokleberg, W.J., Goryachev, N., Shpikerman, V.I., Bundtzen, T., Khanchuk, A.I., Ratkin, V.V., and Parfenov, L.M., 1998, Metallogenesis and tectonics of major granitoid-hosted gold metallogenic belts in the Russian Far East and Alaska, 2 p.","productDescription":"2 p.","startPage":"65","endPage":"66","numberOfPages":"2","costCenters":[],"links":[{"id":281780,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia;United States","state":"Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 106.8,41.2 ], [ 106.8,81.9 ], [ -129.99,81.9 ], [ -129.99,41.2 ], [ 106.8,41.2 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd66b9e4b0b29085100f42","contributors":{"editors":[{"text":"Seltmann, R.","contributorId":48721,"corporation":false,"usgs":true,"family":"Seltmann","given":"R.","email":"","affiliations":[],"preferred":false,"id":509783,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Gonevchuk, G.A.","contributorId":111645,"corporation":false,"usgs":true,"family":"Gonevchuk","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":509784,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Khanchuk, Alexander I.","contributorId":19585,"corporation":false,"usgs":true,"family":"Khanchuk","given":"Alexander","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":509782,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Nokleberg, Warren J. 0000-0002-1574-8869 wnokleberg@usgs.gov","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":2077,"corporation":false,"usgs":true,"family":"Nokleberg","given":"Warren","email":"wnokleberg@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":489678,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goryachev, Nikolai A.","contributorId":7318,"corporation":false,"usgs":true,"family":"Goryachev","given":"Nikolai A.","affiliations":[],"preferred":false,"id":489679,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shpikerman, Vladimir I.","contributorId":35766,"corporation":false,"usgs":true,"family":"Shpikerman","given":"Vladimir","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":489681,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bundtzen, Thomas K.","contributorId":83560,"corporation":false,"usgs":true,"family":"Bundtzen","given":"Thomas K.","affiliations":[],"preferred":false,"id":489684,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Khanchuk, Alexander I.","contributorId":19585,"corporation":false,"usgs":true,"family":"Khanchuk","given":"Alexander","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":489680,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ratkin, Vladimir V.","contributorId":79924,"corporation":false,"usgs":true,"family":"Ratkin","given":"Vladimir","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":489683,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Parfenov, Leonid M.","contributorId":59112,"corporation":false,"usgs":true,"family":"Parfenov","given":"Leonid","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":489682,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70073908,"text":"70073908 - 1998 - Summary of ground-water quality in West Virginia","interactions":[],"lastModifiedDate":"2017-01-30T13:20:15","indexId":"70073908","displayToPublicDate":"1998-01-01T14:17:11","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Summary of ground-water quality in West Virginia","docAbstract":"Water-quality data for the 28 sites in the West Virginia ambient ground-water-quality network and for wells in the U.S. Geological Survey National Water Information System (NWIS) data base for West Virginia were analyzed statistically to identify any water-quality trends and relations and to compare data from the two data sets. Data for 10 selected properties and constituents (pH, fecal coliform, iron, manganese, sulfate, hardness, nitrate plus nitrite, chloride, fluoride, and dissolved solids) were grouped by geologic unit, topographic setting, well depth, and season; simple statistical descriptors such as mean, median, maximum, minimum, standard deviation, and 10th and 90th percentiles were computed for each property and constituent and are summarized in tables.
Analysis of the data for wells from the NWIS data base showed that highest median concentrations of dissolved iron and dissolved manganese are in samples from the Lower Pennsylvanian units, which are found mainly in the low-sulfur coal fields of southern West Virginia; the highest median concentration of dissolved sulfate is in samples from the Quaternary alluvium along the Ohio and Kanawha Rivers; and the highest median hardness and concentrations of dissolved nitrate plus nitrite are in samples from the Cambrian and Ordovician karst limestone units found mainly in the Eastern Panhandle. The highest median concentrations of dissolved iron and dissolved manganese are in samples from valley wells and wells of shallow depth, and hardness is greatest in samples from hilltop wells. Analysis of data for all wells and springs in the ambient network corroborated statistics for the NWIS data set in that median concentration of total iron is highest in samples from the Lower Pennsylvanian units, median concentration of dissolved sulfate is highest in samples from the Quaternary alluvium, and hardness and median concentrations of total nitrate plus nitrite are highest in samples from the Cambrian and Ordovician units. Data from the ambient network did not show any significant seasonal variations in groundwater quality. Of the additional constituents sampled for in the ambient network, median concentrations of metals were less than U.S. Environmental Protection Agency drinking-water standards, and organic chemical constituents were rarely detected.
Statistical comparisons of data from the NWIS data base and the ambient network data set showed no significant differences except for fecal coliform, iron, and manganese. Median concentrations of these three constituents were several times greater for samples from wells and springs in the ambient network. Statistical differences in values for these constituents could be attributed to differences in the state of constituents sampled (dissolved concentrations of iron and manganese for the NWIS data set as opposed to total concentrations for the ambient network data set) and the smaller number of sites in the ambient network. Statistical resolution could be improved by sampling a greater number of wells and springs that have a greater diversity of geologic and topographic conditions for the ambient network. The present ambient network does not include sites in Silurian or Middle Pennsylvanian geologic units nor sites in hilltop settings. The statistical validity of the ambient network could be improved by sampling additional sites, especially those for aquifers underrepresented in the data set.
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P.","affiliations":[],"preferred":false,"id":489186,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70204128,"text":"70204128 - 1998 - Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou","interactions":[],"lastModifiedDate":"2023-02-23T21:33:03.109729","indexId":"70204128","displayToPublicDate":"1998-01-01T11:58:46","publicationYear":"1998","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"title":"Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou","docAbstract":"Most wetland losses in the southern region over the past 200 years have occurred in bottomland hardwood forests. By 1980 the original extent of palustrine bottomland in Texas had been reduced by 63%, from roughly 16 to 6 million acres. Additional losses have occurred during more recent years as a result of conversion to agriculture and timber harvests; these factors and the need to supply new hardwood chip mills in the region pose a potential threat to the remaining hardwood resource. The Harrison Bayou watershed in northeast Texas contains one of the few relatively undisturbed bottomland hardwood wetland forests in the State. Harrison Bayou is part of the Caddo Lake wetlands complex, most of which was designated a Wetland of International Importance under the Ramsar Treaty in October of 1993. Caddo Lake State Park is one of fifteen \"Ramsar\" wetlands in the United States; it is the only wetland with this designation in the State of Texas. Harrison Bayou is an important component of the Caddo Lake watershed; it represents a model bottomland hardwood wetland in both structure and ecological function. Three major forest cover types illustrate the diversity of the 600-hectare bottomland hardwood/baldcypress forest at Harrison Bayou. Comparison of wetland forest extent and species composition in 1977 with 1993 revealed very little change in wetland forest community structure.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Wilderness and natural areas in Eastern North America : Research, management and planning","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Center for Applied Studies in Forestry","usgsCitation":"Walker, L.C., Brantley, T., and Burkett, V., 1998, Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou, chap. of Wilderness and natural areas in Eastern North America : Research, management and planning, p. 98-108.","productDescription":"11 p.","startPage":"98","endPage":"108","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":365339,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","otherGeospatial":"Harrison Bayou","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -94.10682678222656,\n 32.687353574937944\n ],\n [\n -94.17463302612305,\n 32.523657815699146\n ],\n [\n -94.18338775634764,\n 32.50802457488995\n ],\n [\n -94.13360595703125,\n 32.49846958927782\n ],\n [\n -94.0821075439453,\n 32.59455223925157\n ],\n [\n -94.0810775756836,\n 32.626364162516225\n ],\n [\n -94.07730102539062,\n 32.66365647172217\n ],\n [\n -94.10682678222656,\n 32.687353574937944\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Walker, Laurence C.","contributorId":216818,"corporation":false,"usgs":false,"family":"Walker","given":"Laurence","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":765645,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brantley, Thomas","contributorId":216820,"corporation":false,"usgs":false,"family":"Brantley","given":"Thomas","email":"","affiliations":[],"preferred":false,"id":765646,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burkett, Virginia 0000-0003-4746-2862 virginia_burkett@usgs.gov","orcid":"https://orcid.org/0000-0003-4746-2862","contributorId":2867,"corporation":false,"usgs":true,"family":"Burkett","given":"Virginia","email":"virginia_burkett@usgs.gov","affiliations":[{"id":505,"text":"Office of the AD Climate and Land-Use Change","active":true,"usgs":true}],"preferred":true,"id":765647,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70250560,"text":"70250560 - 1998 - Evaluation of two oral baiting systems for wild rodents","interactions":[],"lastModifiedDate":"2023-12-15T16:30:32.88195","indexId":"70250560","displayToPublicDate":"1998-01-01T10:24:31","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of two oral baiting systems for wild rodents","docAbstract":"Tetracycline hydrochloride (TC)-treated peanut butter or rodent chow baits were distributed during March 1990, on separate 0.53 ha sites in Oglethorpe County, Georgia (USA). Rodents were trapped on a control site prior to bait distribution and on two baited sites 6 days post-distribution. Cleaned skulls from euthanized mammals were grossly examined for TC florescence using an ultraviolet (UV) light. Mandibles were sectioned and examined for TC fluorescence using an ultraviolet light microscope. All 21 cotton rats (Sigmodon hispidus), four eastern harvest mice (Rithrodontomys humulis), and two golden mice (Ochrotomys nuttalli) captured on the control site were negative for TC fluorescence. On the peanut butter bait site, mandible sections from 29 of 32 (91%) cotton rats, three of three (100%) eastern harvest mice, two of three (66%) golden mice, zero of five (0%) white-footed mice (Peromyscus leucopus), one of three (33%) short-tailed shrews (Blarina brevicauda), and zero of two (0%) least shrews (Cryptotis parva) were positive for TC. Results from the rodent chow bait site indicated that 18 of 25 (72%) cotton rats, zero of three (0%) eastern harvest mice, two of seven (29%) golden mice, zero of four (0%) white-footed mice, and zero of four (0%) least shrews were positive for TC fluorescence in mandible sections. These results suggest that a large portion of a free-ranging small rodent population can be administered biological markers or vaccines using baits.
","language":"English","publisher":"Wildlife Disease Association","doi":"10.7589/0090-3558-34.2.369","usgsCitation":"Creekmore, T.E., Fletcher, W., and Stallknecht, D., 1998, Evaluation of two oral baiting systems for wild rodents: Journal of Wildlife Diseases, v. 34, no. 2, p. 369-372, https://doi.org/10.7589/0090-3558-34.2.369.","productDescription":"4 p.","startPage":"369","endPage":"372","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":423627,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Georgia","county":"Oglethorpe 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Terry E.","contributorId":42179,"corporation":false,"usgs":true,"family":"Creekmore","given":"Terry","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":890371,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fletcher, William","contributorId":87076,"corporation":false,"usgs":true,"family":"Fletcher","given":"William","affiliations":[],"preferred":false,"id":890372,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stallknecht, David E.","contributorId":225107,"corporation":false,"usgs":false,"family":"Stallknecht","given":"David E.","affiliations":[{"id":36701,"text":"Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia","active":true,"usgs":false}],"preferred":false,"id":890373,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70021050,"text":"70021050 - 1998 - Source character of microseismicity in the San Francisco Bay block, California, and implications for seismic hazard","interactions":[],"lastModifiedDate":"2023-10-22T14:20:03.738515","indexId":"70021050","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Source character of microseismicity in the San Francisco Bay block, California, and implications for seismic hazard","docAbstract":"We examine relocated seismicity within a 30-km-wide crustal block containing San Francisco Bay and bounded by two major right-lateral strike-slip fault systems, the Hayward and San Andreas faults, to determine seismicity distribution, source character, and possible relationship to proposed faults. Well-located low-level seismicity (Md ≦ 3.0) has occurred persistently within this block throughout the recording interval (1969 to 1995), with the highest levels of activity occurring along or directly adjacent to (within ∼5 km) the bounding faults and falling off toward the long axis of the bay. The total seismic moment release within the interior of the Bay block since 1969 is equivalent to one ML 3.8 earthquake, one to two orders of magnitude lower than activity along and within 5 km of the bounding faults. Focal depths of reliably located events within the Bay block are generally less than 13 km with most seismicity in the depth range of 7 to 12 km, similar to focal depths along both the adjacent portions of the San Andreas and Hayward faults. Focal mechanisms for Md 2 to 3 events within the Bay block mimic focal mechanisms along the adjacent San Andreas fault zone and in the East Bay, suggesting that Bay block is responding to a similar regional stress field. Two potential seismic source zones have been suggested within the Bay block. Our hypocentral depths and focal mechanisms suggest that a proposed subhorizontal detachment fault 15 to 18 km beneath the Bay is not seismically active. Several large-scale linear NW-trending aeromagnetic anomalies within the Bay block were previously suggested to represent large through-going subvertical fault zones. The two largest earthquakes (both Md 3.0) in the Bay block since 1969 occur near two of these large-scale linear aeromagnetic anomalies; both have subvertical nodal planes with right-lateral slip subparallel to the magnetic anomalies, suggesting that structures related to the anomalies may be capable of brittle failure. Geodetic, focal mechanism and seismicity data all suggest the Bay block is responding elastically to the same regional stresses affecting the bounding faults; however, continuous Holocene reflectors across the proposed fault zones suggest that if the magnetic anomalies represent basement fault zones, then these faults must have recurrence times one to several orders of magnitude longer than on the bounding faults.
During a 6 mo study of moribund trout from Buford hatchery, Buford, Georgia, USA, a Loma cf. salmonae microsporidian parasite was studied in the gills of brook trout Salvelinus fontinalis, brown trout Salmo trutta, and rainbow trout Oncorhynchus mykiss. This parasite was morphologically similar to L. salmonae and L. fontinalis but differed in spore size. Scanning and transmission electron microscopy demonstrated that xenomas were embedded in gill filaments. Transmission electron micrographs prepared from fresh tissue showed mature spores with 12 to 15 turns of their polar tube. Spore diameters for the Georgia strain from formalin-fixed gill tissues measured 3.5 (SD ±0.1) by 1.8 (SD ±0.1) µm. Electron micrographs of formalin-fixed, deparaffinized tissues of rainbow trout from Pennsylvania and West Virginia show spores with a diameter of 3.5 (±0.2) by 1.7 (±0.1) µm and 3.4 (±0.2) by 1.8 (±0.1) µm, respectively. Transmission electron micrographs of spores from Pennsylvania and West Virginia show that mature spores from both states had 13 to 15 turns of their polar tubes. Measurements from transmission electron micrographs prepared from alcohol-fixed tissues from Virginia fish contained spores with a diameter of 3.0 (±0.3) by 1.1 (±0.3) µm and 12 to 15 turns of their polar tubes. These measurements are consistent with L. salmonae and therefore suggest that the parasite is present on the east coast of the United States. During the height of the Georgia epizootic, the percentage of fish with observed xenomas reached 62.2% (N = 87), and the highest number of xenomas counted per 10 gill filaments was 133 (N = 87). The microsporidian epizootic occurred either during the autumn months or when intake river water quality reached combined iron-manganese concentrations as high as 1.01 (mean 0.44, SD ±0.42) mg-1.
","language":"English","publisher":"Inter-Research","doi":"10.3354/dao034211","usgsCitation":"Bader, J., Shotts, E.B., Steffens, W., and Lom, J., 1998, Occurrence of Loma cf salmonae brook, brown and rainbow trout from Buford Trout Hatchery, Georgia, USA: Diseases of Aquatic Organisms, v. 34, no. 3, p. 211-216, https://doi.org/10.3354/dao034211.","productDescription":"6 p.","startPage":"211","endPage":"216","numberOfPages":"6","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":489777,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/dao034211","text":"Publisher Index Page"},{"id":131050,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af7e4b07f02db693b6e","contributors":{"authors":[{"text":"Bader, J.A.","contributorId":18704,"corporation":false,"usgs":true,"family":"Bader","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":321206,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shotts, E. B. Jr.","contributorId":102414,"corporation":false,"usgs":false,"family":"Shotts","given":"E.","suffix":"Jr.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":321209,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Steffens, W.L.","contributorId":75803,"corporation":false,"usgs":true,"family":"Steffens","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":321207,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lom, J.","contributorId":83879,"corporation":false,"usgs":true,"family":"Lom","given":"J.","email":"","affiliations":[],"preferred":false,"id":321208,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70020355,"text":"70020355 - 1998 - Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa groundwaters and surface waters","interactions":[],"lastModifiedDate":"2020-01-06T06:44:08","indexId":"70020355","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa groundwaters and surface waters","docAbstract":"Water samples were collected from 88 municipal wells throughout Iowa during the summer and were collected monthly at 12 stream sites in eastern Iowa from March to December 1996 to study the occurrence of the sulfonic and oxanilic metabolites of acetochlor, alachlor, and metolachlor. The sulfonic and oxanilic metabolites were present in almost 75% of the groundwater samples and were generally present from 3 to 45 times more frequently than their parent compounds. In groundwater, the median value of the summed concentrations of acetochlor, alachlor, and metolachlor was less than 0.05 μg/L, and the median value of the summed concentrations of the six metabolites was 1.2 μg/L. All surface water samples contained at least one detectable metabolite compound. Individual metabolites were detected from 2 to over 100 times more frequently than the parent compounds. In surface water, the median value of the summed concentrations of the three parent compounds was 0.13 μg/L, and the median value of the summed concentrations of the six metabolites was 6.4 μg/L. These data demonstrate the importance of analyzing both parent compounds and metabolites to more fully understand the environmental fate and transport of herbicides in the hydrologic system.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es971138t","issn":"0013936X","usgsCitation":"Kalkhoff, S.J., Kolpin, D.W., Thurman, E., Ferrer, I., and Barcelo, D., 1998, Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa groundwaters and surface waters: Environmental Science & Technology, v. 32, no. 11, p. 1738-1740, https://doi.org/10.1021/es971138t.","productDescription":"3 p.","startPage":"1738","endPage":"1740","numberOfPages":"3","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":231294,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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dwkolpin@usgs.gov","orcid":"https://orcid.org/0000-0002-3529-6505","contributorId":1239,"corporation":false,"usgs":true,"family":"Kolpin","given":"Dana","email":"dwkolpin@usgs.gov","middleInitial":"W.","affiliations":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true}],"preferred":true,"id":778908,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thurman, E.M.","contributorId":102864,"corporation":false,"usgs":true,"family":"Thurman","given":"E.M.","affiliations":[],"preferred":false,"id":385934,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ferrer, I.","contributorId":97260,"corporation":false,"usgs":true,"family":"Ferrer","given":"I.","email":"","affiliations":[],"preferred":false,"id":385933,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Barcelo, D.","contributorId":24107,"corporation":false,"usgs":true,"family":"Barcelo","given":"D.","affiliations":[],"preferred":false,"id":385930,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70020240,"text":"70020240 - 1998 - Depth of the base of the Jackson aquifer, based on geophysical exploration, southern Jackson Hole, Wyoming, USA","interactions":[],"lastModifiedDate":"2024-03-05T01:39:45.028005","indexId":"70020240","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Depth of the base of the Jackson aquifer, based on geophysical exploration, southern Jackson Hole, Wyoming, USA","docAbstract":"A geophysical survey was conducted to determine the depth of the base of the water-table aquifer in the southern part of Jackson Hole, Wyoming, USA. Audio-magnetotellurics (AMT) measurements at 77 sites in the study area yielded electrical-resistivity logs of the subsurface, and these were used to infer lithologic changes with depth. A 100–600 ohm-m geoelectric layer, designated the Jackson aquifer, was used to represent surficial saturated, unconsolidated deposits of Quaternary age. The median depth of the base of the Jackson aquifer is estimated to be 200 ft (61 m), based on 62 sites that had sufficient resistivity data. AMT-measured values were kriged to predict the depth to the base of the aquifer throughout the southern part of Jackson Hole. Contour maps of the kriging predictions indicate that the depth of the base of the Jackson aquifer is shallow in the central part of the study area near the East and West Gros Ventre Buttes, deeper in the west near the Teton fault system, and shallow at the southern edge of Jackson Hole. Predicted, contoured depths range from 100 ft (30 m) in the south, near the confluences of Spring Creek and Flat Creek with the Snake River, to 700 ft (210 m) in the west, near the town of Wilson, Wyoming.
","language":"English","publisher":"Springer","doi":"10.1007/s100400050160","usgsCitation":"Nolan, B.T., Campbell, D.L., and Senterfit, R.M., 1998, Depth of the base of the Jackson aquifer, based on geophysical exploration, southern Jackson Hole, Wyoming, USA: Hydrogeology Journal, v. 6, no. 3, p. 374-382, https://doi.org/10.1007/s100400050160.","productDescription":"9 p.","startPage":"374","endPage":"382","numberOfPages":"9","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":231435,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Jackson Hole","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -110.93170166015625,\n 43.30119623257966\n ],\n [\n -110.66802978515625,\n 43.30119623257966\n ],\n [\n -110.66802978515625,\n 43.636075155965784\n ],\n [\n -110.93170166015625,\n 43.636075155965784\n ],\n [\n -110.93170166015625,\n 43.30119623257966\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fed1e4b0c8380cd4ef45","contributors":{"authors":[{"text":"Nolan, Bernard T. 0000-0002-6945-9659 btnolan@usgs.gov","orcid":"https://orcid.org/0000-0002-6945-9659","contributorId":2190,"corporation":false,"usgs":true,"family":"Nolan","given":"Bernard","email":"btnolan@usgs.gov","middleInitial":"T.","affiliations":[{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"preferred":true,"id":385510,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell, David L.","contributorId":95447,"corporation":false,"usgs":true,"family":"Campbell","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":385511,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Senterfit, R. Michael","contributorId":10791,"corporation":false,"usgs":true,"family":"Senterfit","given":"R.","email":"","middleInitial":"Michael","affiliations":[],"preferred":false,"id":385509,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70020205,"text":"70020205 - 1998 - Evidence for faulting related to dissociation of gas hydrate and release of methane off the southeastern United States","interactions":[],"lastModifiedDate":"2018-03-13T17:02:17","indexId":"70020205","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Evidence for faulting related to dissociation of gas hydrate and release of methane off the southeastern United States","docAbstract":"This paper is part of the special publication Gas hydrates: relevance to world margin stability and climatic change (eds J.P. Henriet and J. Mienert). An irregular, faulted, collapse depression about 38 x 18 km in extent is located on the crest of the Blake Ridge offshore from the south- eastern United States. Faults disrupt the sea floor and terminate or sole out about 40-500 m below the sea floor at the base of the gas hydrate stable zone, which is identified from the location of the bottom simulating reflection (BSR). Normal faults are common but reverse faults and folds also are widespread. Folds commonly convert upward into faults. Sediment diapirs and deposits of sediments that were erupted onto the sea floor are also present. Sea-floor depressions at faults may represent locations of liquid/gas vents. The collapse was probably caused by overpressures and by the decoupling of the overlying sediments by gassy muds that existed just beneath the zone of gas hydrate stability.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society Special Publication","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1144/GSL.SP.1998.137.01.23","issn":"03058719","usgsCitation":"Dillon, W.P., Danforth, W.W., Hutchinson, D.R., Drury, R., Taylor, M., and Booth, J., 1998, Evidence for faulting related to dissociation of gas hydrate and release of methane off the southeastern United States: Geological Society Special Publication, no. 137, p. 293-302, https://doi.org/10.1144/GSL.SP.1998.137.01.23.","productDescription":"10 p.","startPage":"293","endPage":"302","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":230966,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Blake Ridge","issue":"137","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d3ee4b0c8380cd52ed2","contributors":{"authors":[{"text":"Dillon, William P. bdillon@usgs.gov","contributorId":79820,"corporation":false,"usgs":true,"family":"Dillon","given":"William","email":"bdillon@usgs.gov","middleInitial":"P.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":385390,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Danforth, W. W.","contributorId":16386,"corporation":false,"usgs":true,"family":"Danforth","given":"W.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":385386,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hutchinson, D. R.","contributorId":31770,"corporation":false,"usgs":true,"family":"Hutchinson","given":"D.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":385387,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Drury, R.M.","contributorId":55039,"corporation":false,"usgs":true,"family":"Drury","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":385389,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Taylor, M.H.","contributorId":37108,"corporation":false,"usgs":true,"family":"Taylor","given":"M.H.","email":"","affiliations":[],"preferred":false,"id":385388,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Booth, J.S.","contributorId":13619,"corporation":false,"usgs":true,"family":"Booth","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":385385,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70021345,"text":"70021345 - 1998 - Palynology of latest Neogene (Middle Miocene to late Pliocene) strata in the Delmarva Peninsula of Maryland and Virginia","interactions":[],"lastModifiedDate":"2012-03-12T17:19:50","indexId":"70021345","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2897,"text":"Northeastern Geology and Environmental Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Palynology of latest Neogene (Middle Miocene to late Pliocene) strata in the Delmarva Peninsula of Maryland and Virginia","docAbstract":"Palynology of Miocene and Pliocene formations in the Delmarva Peninsula of Maryland and Virginia reveals a significant representation of exotic pollen interspersed in pollen assemblages that are otherwise comparable to those from the modern vegetation of the Mid-Alantic coastal plain region. The late Tertiary arboreal pollen (AP) assemblages are dominated by oak, hickory, pine, birch and alder with minor amounts of mid- and southern coastal tree taxa, as well as minor spruce and hemlock and a trace of fir. Nonarboreal pollen (NAP) include grass, sedge, composite and aquatic taxa. Exotic pollen in these assemblages represent plants now foreign to this region. They may be placed in three categories. First, there are extinct forms, such as Labrapollis, Plicatopollis, and Multiporopollenites, that can be traced from the Cretaceous or Early Tertiary into the Late Tertiary. The second group includes forms, such as Podocarpus, Engelhardtia, Pterocarya, Ephedra, Eucommia, Ulmus-Zelkova, Glyptostrobus, Palmae, and Cyathea, that are not found in this region today and not found in early Pleistocene sediments in the eastern United States. Many of these taxa are subtropical or greatly restricted in geographic range. A third group of exotics, mainly Cyrilla, Planera, Gordonia, Jussiaea, and Sapotacaea, including Minusops, are generally found south of the study area or have their northern limit here at this time. The lack of the extinct or distant exotics in early to mid-Pleistocene sediments in the mid-Atlantic coastal plain and the last appearance of Pterocarya, as the last exotic taxon in the early Pleistocene of western Europe, support the stratigraphic assignment of the Pliocene units. The number of exotic taxa diminish markedly between the Miocene pollen assemblages and those of the Late Pliocene. Climatic fluctuations characterize the Late Tertiary environments. The Miocene, for example, incorporates a warming trend between the upper, middle Miocene and the Manokin beds and the late Miocene of the Pokomoke beds. The late Miocene was probably somewhat warner than the present climate in the Delmarva region. This trend is based on the presence of colder climate indicators, mainly spruce and hemlock, in the Manokin pollen record. The two distinct pollen assemblages constitute two pollen zones. Similarly, the Pliocene pollen record also shows a warming trend. The pollen zone of the Yorktown Formation of the early Pliocene age contains the colder climate indicators spruce and hemlock. The Beaverdam and Walston formation of late Pliocene age contain pollen assemblages that reflect climatic conditions warmer than the present time.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northeastern Geology and Environmental Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"01941453","usgsCitation":"Sirkin, L., and Owens, J.P., 1998, Palynology of latest Neogene (Middle Miocene to late Pliocene) strata in the Delmarva Peninsula of Maryland and Virginia: Northeastern Geology and Environmental Sciences, v. 20, no. 2, p. 117-132.","startPage":"117","endPage":"132","numberOfPages":"16","costCenters":[],"links":[{"id":230267,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a74a1e4b0c8380cd77739","contributors":{"authors":[{"text":"Sirkin, L.","contributorId":63954,"corporation":false,"usgs":true,"family":"Sirkin","given":"L.","email":"","affiliations":[],"preferred":false,"id":389543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Owens, J. P.","contributorId":50946,"corporation":false,"usgs":true,"family":"Owens","given":"J.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":389542,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020102,"text":"70020102 - 1998 - Similar rates of decrease of persistent, hydrophobic and particle-reactive contaminants in riverine systems","interactions":[],"lastModifiedDate":"2019-02-04T09:47:55","indexId":"70020102","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Similar rates of decrease of persistent, hydrophobic and particle-reactive contaminants in riverine systems","docAbstract":"Although it is well-known that concentrations of anthropogenic radionuclides and organochlorine compounds in aquatic systems have decreased since their widespread release has stopped in the United States, the magnitude and variability of rates of decrease are not well-known. Paleolimnological studies of reservoirs provide a tool for evaluating these long-term trends in riverine systems. Rates of decrease from the 1960s to the 1990s of 137Cs, PCBs, and total DDT in dated sediment cores from 11 reservoirs in the eastern and central United States were modeled using first-order rate models. Mean half-times of 10.0 (±2.5), 9.5 (±2.2), and 13 (±5.8) yr for decay-corrected 137Cs, PCBs, and total DDT, respectively, are surprisingly similar. Similar rates of decrease in a few reservoirs are also demonstrated for chlordane and lead. Conceptual and simple mathematical models relating two soil distributions of 137Cs to trends in the cores provide insight into differences in trends between watersheds with different land uses and suggest that trends are controlled by erosion, transport, mixing, and deposition of sediments. These results, supported by similar trends reported for other settings and environmental media, could provide an estimate of the decadal response time of riverine systems to changes in the regulation of other persistent hydrophobic or particle-reactive contaminants.","language":"English","publisher":"ACS","doi":"10.1021/es9801902","issn":"0013936X","usgsCitation":"Van Metre, P., Wilson, J.T., Callender, E., and Fuller, C.C., 1998, Similar rates of decrease of persistent, hydrophobic and particle-reactive contaminants in riverine systems: Environmental Science & Technology, v. 32, no. 21, p. 3312-3317, https://doi.org/10.1021/es9801902.","productDescription":"6 p.","startPage":"3312","endPage":"3317","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":206048,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es9801902"},{"id":228075,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"21","noUsgsAuthors":false,"publicationDate":"1998-09-12","publicationStatus":"PW","scienceBaseUri":"505b8f51e4b08c986b318e70","contributors":{"authors":[{"text":"Van Metre, Peter C.","contributorId":34104,"corporation":false,"usgs":true,"family":"Van Metre","given":"Peter C.","affiliations":[],"preferred":false,"id":385032,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, Jennifer T. 0000-0003-4481-6354 jenwilso@usgs.gov","orcid":"https://orcid.org/0000-0003-4481-6354","contributorId":1782,"corporation":false,"usgs":true,"family":"Wilson","given":"Jennifer","email":"jenwilso@usgs.gov","middleInitial":"T.","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":385030,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Callender, Edward","contributorId":69535,"corporation":false,"usgs":true,"family":"Callender","given":"Edward","affiliations":[],"preferred":false,"id":385033,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":385031,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":2002250,"text":"2002250 - 1998 - Distribution and ecology of the big-eared bat, Corynorhinus (=Plecotus) townsendii in Californa","interactions":[],"lastModifiedDate":"2014-05-30T13:22:38","indexId":"2002250","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"title":"Distribution and ecology of the big-eared bat, Corynorhinus (=Plecotus) townsendii in Californa","docAbstract":"This study had two primary objectives: to conduct roost surveys C. townsendii in two parts of California where distributional information was most limited or lacking, and to obtain information on roosting and foraging ecology in two distinctly different habitats. This project was urgently needed because 1) recent California Department of Fish and Game surveys (conducted in 1987-1991) documented significant population declines in most surveyed areas, 2) distribution was still unknown in areas with suitable roosting habitat, and 30 the impact of various land management practices (e.g. prescribed fire, timber, harvest, agriculture, and grazing) on foraging behavior was unknown.
\nA total of 95 abandoned mines, 18 caves, 11 man-made water tunnels, and 7 buildings were surveys for bats. Twenty-pne structures (twelve caves and nine mines) showed significant use by C. townsendii. Eleven are located in the western Sierra Nevada foothills, and ten in the Trinity Mountain area, Six maternity colonies, ranging in size from 48 to about 250 adult females, were identifies. Three were in caves, and three were in mines.
\nDistribution for this species is somewhat patchy, and appears to be limited by the availability of roosting habitat. Historic and recent records would suggest that populations are concentrated in areas with abundant caves (especially the large lava flows in the northeastern portion of the state and karstic regions in the Sierra Nevada and Trinity Alps) or extensive abandoned mine working (particularly in the desert regions to the east and southeast of the Sierra Nevada).
\nRadiotracking studies were conducted in two different habitats: 1) coastal forest (California bay, Douglas fir, and redwood) and grazed grassland at Pt. Reyes National Seashore, and 2) a mixture of scrub (with juniper and mountain mahogany) and ponderosa pine forest at Lava Beds National Monument. At Point Reyes they study colony resided in an abandoned ranch house, and at Lava Beds in a lava tube. In both settings the animals showed considerable loyalty to their roost sites even though the study was conducted after the nursery season had ended; females traveled greater distances than males to forage; and all the animals foraged in close association with vegetation -- in the vegetated gullies and redwood forest at Pt. Reyes, and in the vegetated lava trenches, near juniper or mountain mahogany, and with the stands of ponderosa pine at Lava Beds.
\nGenetic variation was preliminarily examined for three populations using mitochondrial DNA and microsatellites -- two populations within the zone of intergradation between the two subspecies, C. t. townsendii and C. t. pallescens, and one population from the range of C. t. pallescens. These three populations were sufficiently distinct genetically to suggest that these techniques would be appropriated for addressing a wide range of questions for this species, including population differentiation, gene flow and mating systems.
\nMost maternity populations appear to be declining in numbers, and many historic colonies no longer exist. The primary threat to this species appears to be human disturbance at roost sites, particularly recreational caving, renewed mining in old mining districts, and reclamation of abandoned mines for hazard abatement.
","language":"English","publisher":"California Department of Fish and Wildlife","publisherLocation":"Sacremento, CA","collaboration":"Prepared for: Department of the Interiors U.S. Geological Survey Biological Resources Division Species at Risk Program Fiscal Year 1998","usgsCitation":"Pierson, E.D., and Fellers, G.M., 1998, Distribution and ecology of the big-eared bat, Corynorhinus (=Plecotus) townsendii in Californa, i, 90 p.","productDescription":"i, 90 p.","numberOfPages":"95","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":198979,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -125.0,32.0 ], [ -125.0,43.0 ], [ -115.0,43.0 ], [ -115.0,32.0 ], [ -125.0,32.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a181","contributors":{"authors":[{"text":"Pierson, Elizabeth D.","contributorId":48139,"corporation":false,"usgs":true,"family":"Pierson","given":"Elizabeth","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":326276,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fellers, Gary M. 0000-0003-4092-0285 gary_fellers@usgs.gov","orcid":"https://orcid.org/0000-0003-4092-0285","contributorId":3150,"corporation":false,"usgs":true,"family":"Fellers","given":"Gary","email":"gary_fellers@usgs.gov","middleInitial":"M.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":326275,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020618,"text":"70020618 - 1998 - Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly","interactions":[],"lastModifiedDate":"2019-12-17T14:00:57","indexId":"70020618","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly","docAbstract":"The Yukon-Tanana terrane, the largest tectonostratigraphic terrane in the northern North American Cordillera, is polygenetic and not a single terrane. Lineated and foliated (L-S) tectonites, which characterize the Yukon-Tanana terrane, record multiple deformations and formed at different times. We document the polyphase history recorded by L-S tectonites within the Yukon-Tanana upland, east-central Alaska. These upland tectonites compose a heterogeneous assemblage of deformed igneous and metamorphic rocks that form the Alaskan part of what has been called the Yukon-Tanana composite terrane. We build on previous kinematic data and establish the three-dimensional architecture of the upland tectonites through kinematic and structural analysis of more than 250 oriented samples, including quartz c-axis fabric analysis of 39 samples. Through this study we distinguish allochthonous tectonites from parautochthonous tectonites within the Yukon-Tanana upland. The upland tectonites define a regionally coherent stacking order: from bottom to top, they are lower plate North American parautochthonous attenuated continental margin; continentally derived marginal-basin strata; and upper plate ocean-basin and island-arc rocks, including some continental basement rocks. We delineate three major deformation events in time, space, and structural level across the upland from the United States-Canada border to Fairbanks, Alaska: (1) pre-Early Jurassic (>212 Ma) northeast-directed, apparent margin-normal contraction that affected oceanic rocks; (2) late Early to early Middle Jurassic (>188-185 Ma) northwest-directed, apparent margin-parallel contraction and imbrication that resulted in juxtaposition of the allochthonous tectonites with parautochthonous continental rocks; and (3) Early Cretaceous (135-110 Ma) southeast-directed crustal extension that resulted in exposure of the structurally deepest, parautochthonous continental rocks. The oldest event represents deformation within a west-dipping (present coordinates) Permian-Triassic subduction zone. The second event records Early to Middle Jurassic collision of the arc and subduction complex with North American crust, and the third event reflects mid-Cretaceous southeast-directed crustal extension. Events one and two can be recognized and correlated through southern Yukon, even though this region was affected by mid-Cretaceous dextral shear along steep northwest-striking faults. Our data support a model of crustal assembly originally proposed by D. Tempelman-Kluit in which previously deformed allochthonous rocks were thrust over parautochthonous rocks of the attenuated North American margin in Middle Jurassic time. Approximately 50 m.y. after tectonic accretion, east-central Alaska was dissected by crustal extension, exposing overthrust parautochthonous strata.","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1998)110<0211:SAKEOT>2.3.CO;2","issn":"00167606","usgsCitation":"Hansen, V.L., and Dusel-Bacon, C., 1998, Structural and kinematic evolution of the Yukon-Tanana upland tectonites, east-central Alaska: A record of late Paleozoic to Mesozoic crustal assembly: Geological Society of America Bulletin, v. 110, no. 2, p. 211-230, https://doi.org/10.1130/0016-7606(1998)110<0211:SAKEOT>2.3.CO;2.","productDescription":"20 p.","startPage":"211","endPage":"230","numberOfPages":"20","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":231149,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon-Tanana Upland","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -154.248046875,\n 60.88770004207789\n ],\n [\n -141.15234374999997,\n 60.88770004207789\n ],\n [\n -141.15234374999997,\n 66.93006025862448\n ],\n [\n -154.248046875,\n 66.93006025862448\n ],\n [\n -154.248046875,\n 60.88770004207789\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"110","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9bc7e4b08c986b31d0ae","contributors":{"authors":[{"text":"Hansen, V. L.","contributorId":82400,"corporation":false,"usgs":true,"family":"Hansen","given":"V.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":386881,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":777781,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020704,"text":"70020704 - 1998 - Detrital zircon U-Pb geochronology of Cambrian to Triassic miogeoclinal and eugeoclinal strata of Sonora, Mexico","interactions":[],"lastModifiedDate":"2024-07-17T16:00:58.023596","indexId":"70020704","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Detrital zircon U-Pb geochronology of Cambrian to Triassic miogeoclinal and eugeoclinal strata of Sonora, Mexico","docAbstract":"One hundred and eighty two individual detrital zircon grains from Cambrian through Permian miogeoclinal strata, Ordovician eugeoclinal rocks, and Triassic post-orogenic sediments in northwestern Sonora have been analyzed. During Cambrian, Devonian, Permian, and Triassic time, most zircons accumulating along this part of the Cordilleran margin were shed from 1.40–1.45 and 1.62–1.78 Ga igneous rocks that are widespread in the southwestern United States and northwestern Mexico. Zircons with ages of approximately 1.11 Ga are common in Cambrian strata and were apparently shed from granite bodies near the sample site. The sources of 225–280 Ma zircons in our Triassic sample are more problematic, as few igneous rocks of these ages are recognized in northwestern Mexico. Such sources may be present but unrecognized, or the grains could have been derived from igneous rocks of the appropriate ages to the northwest in the Mojave Desert region, to the east in Chihuahua and Coahuila, or to the south in accreted(?) arc-type terranes. Because the zircon grains in our Cambrian and Devonian to Triassic samples could have accumulated in proximity to basement rocks near their present position or in the Death Valley region of southern California, our data do not support or refute the existence of the Mojave-Sonora megashear. Ordovician strata of both miogeoclinal and eugeoclinal affinity are dominated by >1.77 Ga detrital zircons, which are considerably older than most basement rocks in the region. Zircon grains in the miogeoclinal sample were apparently derived from the Peace River arch area of northwestern Canada and transported southward by longshore currents. The eugeoclinal grains may also have come from the Peace River arch region, with southward transport by either sedimentary or tectonic processes, or they may have been shed from off-shelf slivers of continents (perhaps Antarctica?) removed from the Cordilleran margin during Neoproterozoic rifting. It is also possible that the Ordovician eugeoclinal strata are far traveled and exotic to North America.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/97JB03251","issn":"01480227","usgsCitation":"Gehrels, G.E., and Stewart, J., 1998, Detrital zircon U-Pb geochronology of Cambrian to Triassic miogeoclinal and eugeoclinal strata of Sonora, Mexico: Journal of Geophysical Research B: Solid Earth, v. 103, no. B2, p. 2471-2487, https://doi.org/10.1029/97JB03251.","productDescription":"17 p.","startPage":"2471","endPage":"2487","numberOfPages":"17","costCenters":[],"links":[{"id":489099,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/97jb03251","text":"Publisher Index Page"},{"id":231424,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"103","issue":"B2","noUsgsAuthors":false,"publicationDate":"1998-02-10","publicationStatus":"PW","scienceBaseUri":"5059fffde4b0c8380cd4f500","contributors":{"authors":[{"text":"Gehrels, G. E.","contributorId":9660,"corporation":false,"usgs":true,"family":"Gehrels","given":"G.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":387196,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, John H.","contributorId":14383,"corporation":false,"usgs":true,"family":"Stewart","given":"John H.","affiliations":[],"preferred":false,"id":387197,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70020513,"text":"70020513 - 1998 - Geohistory and thermal maturation in the Cherokee Basin (Mid-Continent, U.S.A.): results from modeling","interactions":[],"lastModifiedDate":"2012-03-12T17:20:18","indexId":"70020513","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Geohistory and thermal maturation in the Cherokee Basin (Mid-Continent, U.S.A.): results from modeling","docAbstract":"The Cherokee basin in southeastern Kansas contains a stratigraphic section consisting mostly of Permian-Pennsylvanian alternating clastics and thin carbonates overlying carbonates of Mississippian and Cambrian-Ordovician age on a Precambrian crytalline basement. Based on a conceptual model of events of deposition, nondeposition, and erosion, a burial history model for (1) noncompaction, and a series of models for (2) compaction are computed for a borehole location in the south-central part of the basin. The models are copled with the calculation of nonsteady-state geothermal conditions. Maximum temperatures during basin evolution of about 70??C at the base of the organic-rich Pennsylvanian are predicted by our models, assuming pure heat conduction and a heat flow from the basement of 60 m W/m2. The maturation of organic matter as indicated by three different vitrinite reflectance (Ro) models is on the order og 0.3-0.5% Ro for Pennsylvanian rocks and 0.6% Ro for the Devonian-Mississippian Cattanooga Shale. Vitrinite reflectance was measured on subsurface smaples from three wells. The measured values correlate in the upper part of the sequence with modeled data, but diverge slightly in the Lower Pennsylvanian and Cattanooga Shale. The differences in maturation may be a result of differing local geological conditions within the basin. The relatively high Ro-depth gradients observed in one borehole may be explained by conditions in the Teeter oil field, which is a typical plains-type anticline that has been affected by fluid flow through vertical faults. Higher Ro values correlate positively with the grade of sulfidfe mineralization in the sediment, which may be a hint of fluid impact. The high Ro values relative to the shallow depth of the Mississippian and the Chattanooga Shale in the Brown well are on the order of Ro values modeled for the same stratigraphic units at present-day greater depths and may reflect uplift of the Ozark dome, located further east, affecting the eastern side of the Cherokee Basin.Based on a concept model of deposition, nondeposition and erosion, a burial history model for noncompaction, and a series of models for compaction are developed for a borehole location in a south-central part of the Cherokee basin in southeastern Kansas. Coupled with the calculation of nonsteady state-state geothermal conditions, the models predict maximum temperatures during evolution of about 70 ??C at the base of the organic-rich Pennsylvanian. A difference in organic matter maturation in the Pennsylvanian and the Chattanooga shale exhibited by vitrinite reflectance models indicate probably differing local geological conditions within the basin.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"AAPG","publisherLocation":"Tulsa, OK, United States","issn":"01491423","usgsCitation":"Forster, A., Merriam, D.F., and Hoth, P., 1998, Geohistory and thermal maturation in the Cherokee Basin (Mid-Continent, U.S.A.): results from modeling: American Association of Petroleum Geologists Bulletin, v. 82, no. 9, p. 1673-1693.","startPage":"1673","endPage":"1693","numberOfPages":"21","costCenters":[],"links":[{"id":231186,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"82","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1799e4b0c8380cd55565","contributors":{"authors":[{"text":"Forster, A.","contributorId":14580,"corporation":false,"usgs":true,"family":"Forster","given":"A.","email":"","affiliations":[],"preferred":false,"id":386501,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Merriam, D. F.","contributorId":63175,"corporation":false,"usgs":true,"family":"Merriam","given":"D.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":386503,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoth, P.","contributorId":37215,"corporation":false,"usgs":true,"family":"Hoth","given":"P.","email":"","affiliations":[],"preferred":false,"id":386502,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70020797,"text":"70020797 - 1998 - New seismic images of the cascadia subduction zone from cruise SO 108-ORWELL","interactions":[],"lastModifiedDate":"2017-11-18T10:12:59","indexId":"70020797","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3525,"text":"Tectonophysics","active":true,"publicationSubtype":{"id":10}},"title":"New seismic images of the cascadia subduction zone from cruise SO 108-ORWELL","docAbstract":"In April and May 1996, a geophysical study of the Cascadia continental margin off Oregon and Washington was conducted aboard the German R/V Sonne. This cooperative experiment by GEOMAR and the USGS acquired wide-angle reflection and refraction seismic data, using ocean-bottom seismometers (OBS) and hydrophones (OBH), and multichannel seismic reflection (MCS) data. The main goal of this experiment was to investigate the internal structure and associated earthquake hazard of the Cascadia subduction zone and to image the downgoing plate. Coincident MCS and wide-angle profiles along two tracks are presented here. The plate boundary has been imaged precisely beneath the wide accretionary wedge close to shore at c13km depth. Thus, the downgoing plate dips more shallowly than previously assumed. The dip of the plate changes from 2?? to 4?? at the eastern boundary of the wedge on the northern profile, whereas approximately 3km of sediment is entering the subduction zone. On the southern profile, where the incoming sedimentary section is about 2.2km thick, the plate dips about 0.5?? to 1.5?? near the deformation front and increases to 3.5?? further landwards. On both profiles, the deformation of the accretionary wedge has produced six ridges on the seafloor, three of which represent active faulting, as indicated by growth folding. The ridges are bordered by landward verging faults which reach as deep as the top of the oceanic basement. Thus, the entire incoming sediment package is being accreted. At least two phases of accretion are evident, and the rocks of the older accretionary phase(s) forms the backstop for the younger phase, which started around 1.5 Ma ago. This documents that the 30 to 50km wide frontal part of the accretionary wedge, which is characterized by landward vergent thrusts, is a Pleistocene feature which was formed in response to the high input of sediment building the fans during glacial periods. Velocities increase quite rapidly within the wedge, both landward and downward. At the toe of the deformation front, velocities are higher than 4.0 km/s, indicating extensive dewatering of deep, oceanic sediment. Further landward, considerable velocity variation is found, which indicates major breaks throughout the accretionary history.","language":"English","publisher":"Elsevier","doi":"10.1016/S0040-1951(98)00091-2","issn":"00401951","usgsCitation":"Flueh, E., Fisher, M.A., Bialas, J., Childs, J., Klaeschen, D., Kukowski, N., Parsons, T., Scholl, D., ten Brink, U., Trehu, A., and Vidal, N., 1998, New seismic images of the cascadia subduction zone from cruise SO 108-ORWELL: Tectonophysics, v. 293, no. 1-2, p. 69-84, https://doi.org/10.1016/S0040-1951(98)00091-2.","productDescription":"16 p. ","startPage":"69","endPage":"84","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":231083,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, California, Idaho, Nevada, Oregon","otherGeospatial":"Cascadia subduction zone","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -129,\n 39\n ],\n [\n -116,\n 39\n ],\n [\n -116,\n 52\n ],\n [\n -129,\n 52\n ],\n [\n -129,\n 39\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"293","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6610e4b0c8380cd72cef","contributors":{"authors":[{"text":"Flueh, E.R.","contributorId":65627,"corporation":false,"usgs":true,"family":"Flueh","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":387562,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, M. A.","contributorId":69972,"corporation":false,"usgs":true,"family":"Fisher","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":387563,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bialas, J.","contributorId":19315,"corporation":false,"usgs":true,"family":"Bialas","given":"J.","email":"","affiliations":[],"preferred":false,"id":387557,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Childs, J.R.","contributorId":63011,"corporation":false,"usgs":true,"family":"Childs","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":387561,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Klaeschen, D.","contributorId":88895,"corporation":false,"usgs":true,"family":"Klaeschen","given":"D.","affiliations":[],"preferred":false,"id":387564,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kukowski, Nina","contributorId":94056,"corporation":false,"usgs":true,"family":"Kukowski","given":"Nina","email":"","affiliations":[],"preferred":false,"id":387566,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Parsons, T.","contributorId":48288,"corporation":false,"usgs":true,"family":"Parsons","given":"T.","email":"","affiliations":[],"preferred":false,"id":387560,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Scholl, D.W.","contributorId":106461,"corporation":false,"usgs":true,"family":"Scholl","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":387567,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"ten Brink, Uri S. 0000-0001-6858-3001 utenbrink@usgs.gov","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":127560,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri S.","email":"utenbrink@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":387558,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Trehu, A.M.","contributorId":90754,"corporation":false,"usgs":true,"family":"Trehu","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":387565,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Vidal, N.","contributorId":43514,"corporation":false,"usgs":true,"family":"Vidal","given":"N.","email":"","affiliations":[],"preferred":false,"id":387559,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":1014868,"text":"1014868 - 1998 - Biochemical and conjugation studies of romet-resistant strains of Aeromonas salmonicida from salmonid rearing facilities in the eastern United States","interactions":[],"lastModifiedDate":"2024-03-01T00:56:53.624526","indexId":"1014868","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2177,"text":"Journal of Aquatic Animal Health","active":true,"publicationSubtype":{"id":10}},"title":"Biochemical and conjugation studies of romet-resistant strains of Aeromonas salmonicida from salmonid rearing facilities in the eastern United States","docAbstract":"Strains of Aeromonas salmonicida (n = 585) were collected from covertly infected and diseased salmonid hosts from 12 hatcheries in the eastern United States. Strains and sites were selected because of their potential for harboring antimicrobial resistance, in particular, to Romet™. Resistance to Romet was displayed by 315 strains (53.8%), which were isolated from all six host species sampled at 10 of 12 sites. Thirty of the resistant strains (9.5%) from five sites had no zone of inhibition, whereas the other strains had either confluent growth or resistant colonies within a zone of inhibition. Fifty-one resistant strains, representing each of the three resistance phenotypes, were selected for biochemical and antimicrobial comparisons with Romet-sensitive strains. All were confirmed to be A. salmonicida, and no characteristic biochemical phenotypes were found to be associated with resistance to Romet. Differential resistances between resistant and sensitive strains were detected to the antimicrobials oxytetracycline, tetracycline, sulfadiazine, sulfamethizole, trimethoprim, and SXT, a potentiated sulfonamide composed of trimethoprim and sulfamethoxazole. Plasmid DNA isolation and agarose gel electrophoresis were done for 25 Romet-resistant strains, and R-plasmids, not present in sensitive strains, were detected in 23 of these. Two different sizes of R-plasmids were detected, one about 55 kilobase pairs long and another about 50 kilobase pairs. Two strains isolated from New York brook trout Salvelinus fontinalis had reduced confluent growth within a zone of inhibition but contained no large plasmids. This may indicate chromosomally mediated resistance. Conjugational mating studies evaluated transfer of the R-plasmid DNA using eight Escherichia coli recipients. Successful R-plasmid transfer was accomplished with two donor strains (MI1 and MI2 from New Hampshire brook trout). Our results, in addition to those of other workers, illustrate the widespread resistance in A. salmonicida to approved antimicrobials and the capacity of this bacterium to become resistant in the fish culture environment.
In light of suggestions that the Cascadia subduction margin may pose a significant seismic hazard for the highly populated Pacific Northwest region of the United States, the U.S. Geological Survey (USGS), the Research Center for Marine Geosciences (GEOMAR), and university collaborators collected and interpreted a 530-km-long wide-angle onshore-offshore seismic transect across the subduction zone and volcanic arc to study the major structures that contribute to seismogenic deformation. We observed (1) an increase in the dip of the Juan de Fuca slab from 2°–7° to 12° where it encounters a 20-km-thick block of the Siletz terrane or other accreted oceanic crust, (2) a distinct transition from Siletz crust into Cascade arc crust that coincides with the Mount St. Helens seismic zone, supporting the idea that the mafic Siletz block focuses seismic deformation at its edges, and (3) a crustal root (35–45 km deep) beneath the Cascade Range, with thinner crust (30–35 km) east of the volcanic arc beneath the Columbia Plateau flood basalt province. From the measured crustal structure and subduction geometry, we identify two zones that may concentrate future seismic activity: (1) a broad (because of the shallow dip), possibly locked part of the interplate contact that extends from ∼25 km depth beneath the coastline to perhaps as far west as the deformation front ∼120 km offshore and (2) a crustal zone at the eastern boundary between the Siletz terrane and the Cascade Range.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1998)026<0199:ANVITC>2.3.CO;2","issn":"00917613","usgsCitation":"Parsons, T., Trehu, A., Luetgert, J., Miller, K., Kilbride, F., Wells, R., Fisher, M.A., Flueh, E., ten Brink, U., and Christensen, N., 1998, A new view into the Cascadia subduction zone and volcanic arc: Implications for earthquake hazards along the Washington margin: Geology, v. 26, no. 3, p. 199-202, https://doi.org/10.1130/0091-7613(1998)026<0199:ANVITC>2.3.CO;2.","productDescription":"4 p.","startPage":"199","endPage":"202","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":230135,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Cascadia","volume":"26","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e4bae4b0c8380cd468a4","contributors":{"authors":[{"text":"Parsons, T.","contributorId":48288,"corporation":false,"usgs":true,"family":"Parsons","given":"T.","email":"","affiliations":[],"preferred":false,"id":388665,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Trehu, A.M.","contributorId":90754,"corporation":false,"usgs":true,"family":"Trehu","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":388672,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luetgert, J.H.","contributorId":69993,"corporation":false,"usgs":true,"family":"Luetgert","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":388670,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, K.","contributorId":104434,"corporation":false,"usgs":true,"family":"Miller","given":"K.","affiliations":[],"preferred":false,"id":388673,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kilbride, F.","contributorId":56407,"corporation":false,"usgs":true,"family":"Kilbride","given":"F.","email":"","affiliations":[],"preferred":false,"id":388667,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wells, R.E. 0000-0002-7796-0160","orcid":"https://orcid.org/0000-0002-7796-0160","contributorId":67537,"corporation":false,"usgs":true,"family":"Wells","given":"R.E.","affiliations":[],"preferred":false,"id":388668,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fisher, M. A.","contributorId":69972,"corporation":false,"usgs":true,"family":"Fisher","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":388669,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Flueh, E.","contributorId":55591,"corporation":false,"usgs":true,"family":"Flueh","given":"E.","email":"","affiliations":[],"preferred":false,"id":388666,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"ten Brink, Uri S. 0000-0001-6858-3001 utenbrink@usgs.gov","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":127560,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri S.","email":"utenbrink@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":388671,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Christensen, N.I.","contributorId":28016,"corporation":false,"usgs":true,"family":"Christensen","given":"N.I.","email":"","affiliations":[],"preferred":false,"id":388664,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70020607,"text":"70020607 - 1998 - Noble gases, stable isotopes, and radiocarbon as tracers of flow in the Dakota aquifer, Colorado and Kansas","interactions":[],"lastModifiedDate":"2012-03-12T17:19:42","indexId":"70020607","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","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":"Noble gases, stable isotopes, and radiocarbon as tracers of flow in the Dakota aquifer, Colorado and Kansas","docAbstract":"A suite of chemical and isotope tracers (dissolved noble gases, stable isotopes of water, radiocarbon, and CI) have been analyzed along a flow path in the Dakota aquifer system to determine likely recharge sources, ground water residence times, and the extent of mixing between local and intermediate flow systems, presumably caused by large well screens. Three water types were distinguished with the tracers, each having a very different history. Two of the water types were found in south-eastern Colorado where the Dakota is poorly confined. The tracer data suggest that the first group recharged locally during the last few thousand years and the second group was composed of ground water that recharged earlier during a cooler climate, presumably during the last glacial period (LGP) and mixed aged water. The paleotemperature record archived in this groundwater system indicates that south-eastern Colorado was about 5??C cooler during the LGP than during the late Holocene. Similar temperature changes derived from dissolved noble gases in other aquifer systems have been reported earlier for the south-western United States. The third water type was located down gradient of the first two in the confined Dakota in western and central Kansas. Groundwater residence time of this water mass is on the order of 104-105 yrs and its recharge location is near the Colorado and Kansas border down gradient of the other water types. The study shows the importance of using multiple tracers when investigating ground water systems.A suite of chemical and isotope tracers (dissolved noble gases, stable isotopes of water, radiocarbon, and CL) were analyzed along a flow path in the Dakota aquifer system to determine likely recharge sources, ground water residence times, and the extent of mixing between local and intermediate flow systems. Three water types were distinguished with the tracers, each having a very different history. Two of the water types were located in south-eastern Colorado where the Dakota is poorly confined. The third water type was located down gradient of the first two in the confined Dakota in western and central Kansas.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Sci B.V.","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/S0022-1694(98)00233-9","issn":"00221694","usgsCitation":"Clark, J., Davisson, M., Hudson, G., and Macfarlane, P.A., 1998, Noble gases, stable isotopes, and radiocarbon as tracers of flow in the Dakota aquifer, Colorado and Kansas: Journal of Hydrology, v. 211, no. 1-4, p. 151-167, https://doi.org/10.1016/S0022-1694(98)00233-9.","startPage":"151","endPage":"167","numberOfPages":"17","costCenters":[],"links":[{"id":487330,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://escholarship.org/uc/item/3wz4z3z0","text":"External Repository"},{"id":206840,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0022-1694(98)00233-9"},{"id":230913,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"211","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6724e4b0c8380cd731d5","contributors":{"authors":[{"text":"Clark, J.F.","contributorId":24124,"corporation":false,"usgs":true,"family":"Clark","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":386845,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Davisson, M.L.","contributorId":62277,"corporation":false,"usgs":true,"family":"Davisson","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":386847,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hudson, G.B.","contributorId":28768,"corporation":false,"usgs":true,"family":"Hudson","given":"G.B.","email":"","affiliations":[],"preferred":false,"id":386846,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Macfarlane, P. A.","contributorId":14597,"corporation":false,"usgs":true,"family":"Macfarlane","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":386844,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70020263,"text":"70020263 - 1998 - Coalbed methane resource potential and current prospects in Pennsylvania","interactions":[],"lastModifiedDate":"2012-03-12T17:20:16","indexId":"70020263","displayToPublicDate":"1998-01-01T00:00:00","publicationYear":"1998","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Coalbed methane resource potential and current prospects in Pennsylvania","docAbstract":"Coalbed methane gas content analyses from exploratory coal cores and existing data indicate that gas content generally increases with increasing depth and rank. The coal beds studied are from the Main Bituminous field of Pennsylvania (which currently contains 24 coalbed methane pools) and the Northern and Southern Anthracite coal fields. They range from the Middle Pennsylvanian Allegheny Group to the Late Pennsylvanian-Early Permian Dunkard Group. Previous US Bureau of Mines studies revealed gas contents from 0.4 to 13.8 cm3/g at depths of 99 to 432 m for the bituminous coal beds of the Allegheny Group. More recent core data from the Allegheny Group yielded gas contents from 2.2 to 8.9 cm3/g at depths from 167 to 387 m. In the Anthracite region of eastern Pennsylvania, the little data that are available show that gas content is anomalously high or low. Gas yields from test holes in eastern Pennsylvania are low with or without artificial stimulation mainly due to the lack of a good cleat system. Overall estimates of coalbed methane resources indicate there may be 1.7 Tm3 (61 Tcf) of gas-in-place contained in the Northern Appalachian coal basin. The amount of technically recoverable coalbed methane resources is projected by the US Geological Survey National Oil and Gas Resource Assessment Team [US Geological Survey National Oil and Gas Resource Assessment Team, 1996. 1995 National assessment of United States oil and gas resources-results, methodology, and supporting data, US Geological Survey Digital Data Series DDS-30, CD-ROM, Denver, CO, 80 pp.] and Lyons [Lyons, P.C., 1997. Central-northern Appalachian coalbed methane flow grows. Oil and Gas Journal 95 (27) 76-79] at 0.3 Tm3 (11.48 Tcf). This includes portions of Pennsylvania, Ohio, West Virginia, and a small part of Maryland. Consequently, a mapping investigation was conducted to evaluate the regional geology of the bituminous coal-bearing intervals in southwestern Pennsylvania and its influence on coalbed methane potential. Phase I of this study involved the entire Pennsylvanian coal-bearing interval of southwestern Pennsylvania. Phase II focused on a stratigraphic delineation and evaluation of Allegheny Group coal beds and associated sandstones. Several prospective coal beds and associated facies relationships with channel-fill sandstones were determined. Possible non-coal scenarios for coalbed methane include erosional contacts between coal beds and overlying channel-fill sandstones and areas of stacked channel-fill sandstones. Repetitive sequences of coal accumulation are stacked, commonly with shale interburden, and are also potential coalbed methane targets. Additional Pennsylvania Geological Survey drilling/coalbed methane sampling occurred in Armstrong, Beaver, Cambria, Greene, Lawrence, Somerset, and Washington Counties. Raw coalbed methane desorption data tables/graphical displays of gas contents versus depth, thickness, and time, and average composition and heating values from coal beds of the Allegheny Group to the Dunkard Group are available at the Pennsylvania Geological Survey. Further information on cross-sections, isopleth maps, isopach maps, raw drillhole data, and ownership issues can also be obtained from the same source.A mapping of the regional geology of the bituminous coal-bearing intervals in southwestern Pennsylvania reveal several prospective coal beds and associated facies relationships with channel-fill sandstones. Possible non-coal scenarios for coalbed methane include erosional contacts between coalbeds and overlying channel-fill sandstones and areas of stacked channel-fill sandstones. Repetitive sequences of coal accumulation are stacked, commonly with shale interburden. and are also potential coalbed methane targets.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier Sci B.V.","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/S0166-5162(98)00036-6","issn":"01665162","usgsCitation":"Markowski, A., 1998, Coalbed methane resource potential and current prospects in Pennsylvania: International Journal of Coal Geology, v. 38, no. 1-2, p. 137-159, https://doi.org/10.1016/S0166-5162(98)00036-6.","startPage":"137","endPage":"159","numberOfPages":"23","costCenters":[],"links":[{"id":206902,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0166-5162(98)00036-6"},{"id":231168,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"38","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f76ee4b0c8380cd4cafb","contributors":{"authors":[{"text":"Markowski, A.K.","contributorId":31149,"corporation":false,"usgs":true,"family":"Markowski","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":385578,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}