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The geochemistry and stable isotopes of groundwaters, surface waters, and precipitation indicate different sources of some dissolved constituents, but a common source of recharge and other constituents in two adjacent closed basins in the Atacama Desert region of northern Chile (24°15′–24°45′S). Waters from artesian wells, trenches, and ephemeral streams in the Punta Negra Basin are characterized by concentrations of Na>Ca>Mg and Cl≥SO4,with TDS<10 g/l. Values of δD and δ18O for Punta Negra Basin waters follow an evaporitic trend typical of closed basin waters in northern Chile and elsewhere. In contrast, ground waters in the Hamburgo Basin, located about 25 km NW of the Punta Negra Basin, have concentrations of Na > Mg≥Ca and SO4 >Cl, with TDS also <10 g/l. Aqueous speciation calculations indicate that Hamburgo Basin groundwaters are close to saturation with respect to gypsum. The relatively high SO4 and low Ca in Hamburgo Basin waters result from SO4 influx and subsequent gypsum precipitation related to weathering at La Escondida, a large porphyry copper deposit located near to the center of the basin. Deep mine waters from 130 m below the water table at La Escondida also have Na>Mg≥Ca and SO4 >Cl, but with TDS up to 40 g/l. The deep mine waters have pH between 3.2 and 3.9, and are high in dissolved CO2 (δ13C= −4.8%PDB), indicating probable interaction with oxidizing sulfides. The deep mine waters have δ18O values of ≈−1.8%.compared with values < −3.5‰ for other Hamburgo Basin waters; thus the mine waters may represent a mixture of meteoric waters with deeper “metamorphic” waters, which had interacted with rocks and exchanged oxygen isotopes at elevated temperatures. Alternatively, the deep mine waters may represent fossil meteoric waters which evolved isotopically along an evaporative trend starting from values quite depleted in δ18O and °Dd relative to either precipitation or shallow groundwaters. High I/Br ratios in the Hamburgo Basin waters and La Escondida mine waters are consistent with regionally high I in surficial deposits in the Atacama Desert region and may represent dissolution of a wind-blown evaporite component.

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No abstract available.

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No abstract available.

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No abstract available 

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No abstract available 

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceed­ings of the ocean drilling program","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","usgsCitation":"Fryer, P., Pearce, J., Stokking, L., Ali, J., Arculus, R., Ballotti, D., Burke, M., Ciampo, G., Haggerty, J., Haston, R., Heling, D., Hobart, M., Ishii, T., Johnson, L., Lagabrielle, Y., McCoy, F., Maekawa, H., Marlow, M.S., Milner, G., Mottl, M., Murton, B., Phipps, S., Rigsby, C., Saboda, K., Stabell, B., Van der Laan, S., and Xu, Y., 1990, Summary of results from Leg 125, in Proceed­ings of the ocean drilling program, p. 367-380.","productDescription":"14 p.","startPage":"367","endPage":"380","costCenters":[],"links":[{"id":339299,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58e7540ce4b09da6799c0cb4","contributors":{"authors":[{"text":"Fryer, P.B.","contributorId":190596,"corporation":false,"usgs":false,"family":"Fryer","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":690000,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pearce, J.A.","contributorId":190597,"corporation":false,"usgs":false,"family":"Pearce","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":690001,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stokking, L.B.","contributorId":190598,"corporation":false,"usgs":false,"family":"Stokking","given":"L.B.","email":"","affiliations":[],"preferred":false,"id":690002,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ali, J.R.","contributorId":190599,"corporation":false,"usgs":false,"family":"Ali","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":690003,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Arculus, R.J.","contributorId":35482,"corporation":false,"usgs":true,"family":"Arculus","given":"R.J.","affiliations":[],"preferred":false,"id":690004,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ballotti, D.L.","contributorId":190600,"corporation":false,"usgs":false,"family":"Ballotti","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":690005,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Burke, M.M.","contributorId":190601,"corporation":false,"usgs":false,"family":"Burke","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":690006,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ciampo, Giuliano","contributorId":190602,"corporation":false,"usgs":false,"family":"Ciampo","given":"Giuliano","email":"","affiliations":[],"preferred":false,"id":690007,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Haggerty, J.A.","contributorId":43766,"corporation":false,"usgs":true,"family":"Haggerty","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":690008,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Haston, R.B.","contributorId":190603,"corporation":false,"usgs":false,"family":"Haston","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":690009,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Heling, Dietrich","contributorId":190604,"corporation":false,"usgs":false,"family":"Heling","given":"Dietrich","email":"","affiliations":[],"preferred":false,"id":690010,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Hobart, M.A.","contributorId":190605,"corporation":false,"usgs":false,"family":"Hobart","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":690011,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Ishii, Teruaki","contributorId":190606,"corporation":false,"usgs":false,"family":"Ishii","given":"Teruaki","email":"","affiliations":[],"preferred":false,"id":690012,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Johnson, L.E.","contributorId":71858,"corporation":false,"usgs":true,"family":"Johnson","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":690013,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Lagabrielle, Yves","contributorId":190607,"corporation":false,"usgs":false,"family":"Lagabrielle","given":"Yves","email":"","affiliations":[],"preferred":false,"id":690014,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"McCoy, F.W.","contributorId":86899,"corporation":false,"usgs":true,"family":"McCoy","given":"F.W.","email":"","affiliations":[],"preferred":false,"id":690015,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Maekawa, Hirokazu","contributorId":190608,"corporation":false,"usgs":false,"family":"Maekawa","given":"Hirokazu","email":"","affiliations":[],"preferred":false,"id":690016,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Marlow, M. 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No abstract available.

","language":"English","publisher":"Texas A&M University Ocean Drilling Program","doi":"10.2973/odp.proc.ir.123.105.1990","usgsCitation":"Leg 123 Shipboard Scientific Party, 1990, Site 766: Proceedings of the Ocean Drilling Program: Initial Reports, v. 123, p. 269-352, https://doi.org/10.2973/odp.proc.ir.123.105.1990.","productDescription":"84 p.","startPage":"269","endPage":"352","numberOfPages":"84","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":488412,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"http://doi.org/10.2973/odp.proc.ir.123.105.1990","text":"Publisher Index Page"},{"id":340553,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Argo Abyssal Plain","volume":"123","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59030339e4b0e862d230f800","contributors":{"authors":[{"text":"Leg 123 Shipboard Scientific Party","contributorId":187732,"corporation":true,"usgs":false,"organization":"Leg 123 Shipboard Scientific Party","id":693316,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70187316,"text":"70187316 - 1990 - Site 765: Sedimentology","interactions":[],"lastModifiedDate":"2021-05-10T19:19:48.861208","indexId":"70187316","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5380,"text":"Proceedings of the Ocean Drilling Program: Initial Reports","active":true,"publicationSubtype":{"id":10}},"title":"Site 765: Sedimentology","docAbstract":"

Various techniques were used to decipher the sedimentation history of Site 765, including Markov chain analysis of facies transitions, XRD analysis of clay and other minerals, and multivariate analysis of smear-slide data, in addition to the standard descriptive procedures employed by the shipboard sedimentologist. This chapter presents brief summaries of methodology and major findings of these three techniques, a summary of the sedimentation history, and a discussion of trends in sedimentation through time.

","language":"English","publisher":"Texas A&M University Ocean Drilling Program","doi":"10.2973/odp.proc.ir.123.104.1990","usgsCitation":"Leg 123 Shipboard Scientific Party, 1990, Site 765: Sedimentology: Proceedings of the Ocean Drilling Program: Initial Reports, v. 123, https://doi.org/10.2973/odp.proc.ir.123.104.1990.","productDescription":"20 p.","startPage":"113","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":488199,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/odp.proc.ir.123.104.1990","text":"Publisher Index Page"},{"id":340552,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Argo Abyssal Plain","volume":"123","edition":"94","publicComments":"Volume topic: Argo Abyssal Plain/Exmouth Plateau, covering Leg 123 of the cruises of the Drilling Vessel JOIDES Resolution, Singapore, Republic of Sing., to Singapore, Republic of Sing., Sites 765-766, 28 August 1988 - 1 November 1988","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59030339e4b0e862d230f803","contributors":{"authors":[{"text":"Leg 123 Shipboard Scientific Party","contributorId":187732,"corporation":true,"usgs":false,"organization":"Leg 123 Shipboard Scientific Party","id":693315,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70187315,"text":"70187315 - 1990 - Site 765: Sediment Lithostratigraphy","interactions":[],"lastModifiedDate":"2021-05-10T19:20:02.727717","indexId":"70187315","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5380,"text":"Proceedings of the Ocean Drilling Program: Initial Reports","active":true,"publicationSubtype":{"id":10}},"title":"Site 765: Sediment Lithostratigraphy","docAbstract":"

A 935-m-thick succession of Quaternary through Lower Cretaceous sediments was recovered at Site 765 (Fig. 10). A single core of Quaternary sediment was obtained from Hole 765A; drilling terminated and a new hole was drilled in an attempt to establish the mud line. Quaternary through middle Miocene sediments were cored in Hole 765B down to a depth of 395.6 mbsf. Middle Miocene through Lower Cretaceous sediments were cored in Hole 765C, after washing the interval between 0 and 350.2 mbsf. Exact lithologic correlation of the basal cores from Hole 765B with the upper cores from Hole 765C is not possible because of poor recovery; hence, correlation is based solely on matching sub-bottom depths.

","language":"English","publisher":"Texas A&M University Ocean Drilling Program","doi":"10.2973/odp.proc.ir.123.104.1990","usgsCitation":"Leg 123 Shipboard Scientific Party, 1990, Site 765: Sediment Lithostratigraphy: Proceedings of the Ocean Drilling Program: Initial Reports, v. 123, p. 76-94, https://doi.org/10.2973/odp.proc.ir.123.104.1990.","productDescription":"19 p.","startPage":"76","endPage":"94","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":488213,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/odp.proc.ir.123.104.1990","text":"Publisher Index Page"},{"id":340551,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Argo Abyssal Plain","volume":"123","publicComments":"Volume topic: Argo Abyssal Plain/Exmouth Plateau, covering Leg 123 of the cruises of the Drilling Vessel JOIDES Resolution, Singapore, Republic of Sing., to Singapore, Republic of Sing., Sites 765-766, 28 August 1988 - 1 November 1988","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5903033ae4b0e862d230f806","contributors":{"authors":[{"text":"Leg 123 Shipboard Scientific Party","contributorId":187732,"corporation":true,"usgs":false,"organization":"Leg 123 Shipboard Scientific Party","id":693314,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70186821,"text":"70186821 - 1990 - Postrelease monitoring of radio-instrumented sea otters in Prince William Sound","interactions":[],"lastModifiedDate":"2021-04-09T13:04:46.693116","indexId":"70186821","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"seriesTitle":{"id":5441,"text":"Biological Report","printIssn":"0895-1926","active":true,"publicationSubtype":{"id":19}},"seriesNumber":"90(12)","title":"Postrelease monitoring of radio-instrumented sea otters in Prince William Sound","docAbstract":"

Sea otters (Enhydra lutris) that were captured in western Prince William Sound (PWS) or the Gulf of Alaska, treated, and held in captivity at the temporary rehabilitation centers established in response to the T/V Exxon Valdez oil spill were instrumented with radio transmitters, released into eastern PWS, and monitored by radiotelemetry. We undertook the present study to gain information for guiding the release of the remaining captive otters and evaluating the efficacy of sea otter rehabilitation after exposure to crude oil. Radio transmitters were attached to the flippers of seven sea otters released in May 1989 and monitored for periods of a few hours to more than 60 days. However, little was learned about the fate of these animals because the radio transmitters used proved unreliable. Forty-five additional sea otters from the rehabilitation centers were implanted with radio transmitters, released into northeastern PWS and monitored for 8 months. During the first 20 days after the first release of these implanted otters (n = 21), they were more mobile than wild-caught and released sea otters studied in PWS, from 1984 through 1990. All were alive and vigorous at the end of the 20-day period. Tracking of all 45 implanted sea otters during the 8-month period showed that the otters remained highly mobile. Many (46.6%) crossed into western PWS. However, by the end of the 8 months, 12 of the instrumented otters were dead and 9 were missing. One radio failed. These mortality and missing rates are much higher than those normally observed for adult sea otters in PWS. The death rate was highest in winter. These data suggest that, despite the tremendous amount of money and energy directed toward the treatment and care of these animals, the sea otters released from the centers were not completely rehabilitated, that is, not returned to a normal state. We recommend that future policies focus on preventing otters from becoming oiled, rather than attempting to treat them after oiling has occurred. This focus is especially recommended because of stress and disease risks associated with bringing wild animals into captivity.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Sea Otter Symposium: Proceedings of a Symposium to Evaluate the Response Effort on Behalf of Sea Otters After the T/V Exxon Valdez Oil Spill Into Prince William Sound","conferenceDate":"April 17-19, 1990","conferenceLocation":"Anchorage, Alaska","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, D.C.","doi":"10.5962/bhl.title.45854","issn":"0895-1926","usgsCitation":"Monnett, C., Rotterman, L., Stack, C., and Monson, D., 1990, Postrelease monitoring of radio-instrumented sea otters in Prince William Sound, in Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound, Anchorage, Alaska, April 17-19, 1990, p. 400-409, https://doi.org/10.5962/bhl.title.45854.","productDescription":"10 p.","startPage":"400","endPage":"409","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":487532,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5962/bhl.title.45854","text":"Publisher Index Page"},{"id":339587,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Prince William Sound","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.56640625,\n 58.516651799363785\n ],\n [\n -145.98632812499997,\n 58.516651799363785\n ],\n [\n -145.98632812499997,\n 61.83541335794044\n ],\n [\n -155.56640625,\n 61.83541335794044\n ],\n [\n -155.56640625,\n 58.516651799363785\n ]\n ]\n ]\n }\n }\n ]\n}","publicComments":"U.S. Fish and Wildlife Service Biological Report 90(12)","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58edeb44e4b0eed1ab8cb04f","contributors":{"editors":[{"text":"Bayha, Keith","contributorId":30270,"corporation":false,"usgs":false,"family":"Bayha","given":"Keith","email":"","affiliations":[{"id":6654,"text":"USFWS","active":true,"usgs":false}],"preferred":false,"id":690680,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Kormendy, Jennifer","contributorId":190781,"corporation":false,"usgs":false,"family":"Kormendy","given":"Jennifer","email":"","affiliations":[],"preferred":false,"id":690681,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Monnett, C.","contributorId":190778,"corporation":false,"usgs":false,"family":"Monnett","given":"C.","email":"","affiliations":[],"preferred":false,"id":690676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rotterman, L.M.","contributorId":190779,"corporation":false,"usgs":false,"family":"Rotterman","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":690677,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stack, C.","contributorId":190780,"corporation":false,"usgs":false,"family":"Stack","given":"C.","email":"","affiliations":[],"preferred":false,"id":690678,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Monson, Daniel H. 0000-0002-4593-5673 dmonson@usgs.gov","orcid":"https://orcid.org/0000-0002-4593-5673","contributorId":140480,"corporation":false,"usgs":true,"family":"Monson","given":"Daniel H.","email":"dmonson@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":false,"id":690679,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70186211,"text":"70186211 - 1990 - Seasonal movements of adult female polar bears in the Bering and Chukchi seas","interactions":[],"lastModifiedDate":"2018-05-06T11:03:59","indexId":"70186211","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":978,"text":"Bears: Their Biology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal movements of adult female polar bears in the Bering and Chukchi seas","docAbstract":"

Ten adult female polar bears (Ursus maritimus) were fitted with satellite telemetry collars during March 1986 in the Kotzebue Sound area of the Chukchi Sea. During March-April 1987, 2 of these bears were refitted with satellite telemetry collars and an additional 10 adult females were collared in the northern Bering and eastern Chukchi seas. Data for 1,560 point locations recorded through May 1988 indicated that female polar bears in the Bering and Chukchi seas were resident in western Alaskan waters from November through March, then moved northward with the receding pack ice during April and May. They remained in the northern and northwestern Chukchi Sea during June through September, often adjacent to the Soviet coastline. Satellite telemetry data indicated that 4 females marked in Alaskan waters of the Chukchi Sea apparently denned in the vicinity of Wrangel Island during winter 1987/1988. Denning in American territory of bears marked in the Chukchi and Bering seas has not been documented using satellite telemetry data. Some polar bears moved from the Chukchi Sea into the western Beaufort Sea during summer and fall, then returned to the Chukchi and Bering seas the following winter. Movements of bears from the Chukchi Sea into the central or eastern Beaufort Sea were not documented through spring 1988. These data document that polar bears occuring in the Bering and Chukchi seas are shared internationally between the United States and the Soviet Union.

","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"A selection of papers from the eighth international conference on bear research and management","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"Eighth International Conference on Bear Research and Management","conferenceDate":"February 1989","conferenceLocation":"Victoria, BC","language":"English","publisher":"International Association for Bear Research and Management","doi":"10.2307/3872922","usgsCitation":"Garner, G.W., Knick, S.T., and Douglas, D., 1990, Seasonal movements of adult female polar bears in the Bering and Chukchi seas: Bears: Their Biology and Management, v. 8, p. 219-226, https://doi.org/10.2307/3872922.","productDescription":"8 p.","startPage":"219","endPage":"226","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":338975,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, United States","state":"Alaska","otherGeospatial":"Bering sea, Chukchi sea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -183.603515625,\n 58.26328705248601\n ],\n [\n -152.9296875,\n 58.26328705248601\n ],\n [\n -152.9296875,\n 72.65958846878621\n ],\n [\n -183.603515625,\n 72.65958846878621\n ],\n [\n -183.603515625,\n 58.26328705248601\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58df6acbe4b02ff32c6aeaa1","contributors":{"authors":[{"text":"Garner, Gerald W.","contributorId":149918,"corporation":false,"usgs":false,"family":"Garner","given":"Gerald","email":"","middleInitial":"W.","affiliations":[{"id":13117,"text":"Institute of Arctic Biology, University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":687885,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knick, Steven T. 0000-0003-4025-1704 steve_knick@usgs.gov","orcid":"https://orcid.org/0000-0003-4025-1704","contributorId":159,"corporation":false,"usgs":true,"family":"Knick","given":"Steven","email":"steve_knick@usgs.gov","middleInitial":"T.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":687886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Douglas, David C. 0000-0003-0186-1104 ddouglas@usgs.gov","orcid":"https://orcid.org/0000-0003-0186-1104","contributorId":150115,"corporation":false,"usgs":true,"family":"Douglas","given":"David C.","email":"ddouglas@usgs.gov","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":687887,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70185105,"text":"70185105 - 1990 - Immediate impact of the 'Exxon Valdez' oil spill on marine birds","interactions":[],"lastModifiedDate":"2020-03-24T10:05:47","indexId":"70185105","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Immediate impact of the 'Exxon Valdez' oil spill on marine birds","docAbstract":"

On 24 March 1989, the oil tanker 'Exxon Valdez' spilled 260,000 barrels of crude oil in Prince William Sound, Alaska. Oil eventually drifted over $30,000\\ {\\rm km}^{2}$ of coastal and offshore waters occupied by approximately one million marine birds. More than 30,000 dead birds of 90 species were retrieved from polluted areas by 1 August 1989. Of those identified, murres (74%), other alcids (7.0%), and sea ducks (5.3%) suffered the highest mortality from oil, and most (88%) birds were killed outside of Prince William Sound. A colony of 129,000 murres at the Barren Islands was probably devastated. Another 7,000 birds were retrieved between 1 August and 13 October, but most of those birds appeared to have died from natural causes. This later die-off was composed largely of shearwaters and other procellariids (51%), gulls (22%), and puffins (14%). Based on aerial and ship-based surveys for populations at risk, and extrapolating from the number of dead birds recovered, we estimate that the total kill from oil pollution was from 100,000 to 300,000 birds.

","language":"English","publisher":"American Ornithological Society","doi":"10.2307/4087623","usgsCitation":"Piatt, J.F., Lensink, C.J., Butler, W., Kendziorek, M., and Nysewander, D.R., 1990, Immediate impact of the 'Exxon Valdez' oil spill on marine birds: The Auk, v. 107, no. 2, p. 387-397, https://doi.org/10.2307/4087623.","productDescription":"11 p.","startPage":"387","endPage":"397","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480465,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/4087623","text":"Publisher Index Page"},{"id":337570,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Cook Inlet, Prince William Sound","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156.62109374999997,\n 56.0965557505683\n ],\n [\n -146.3818359375,\n 56.0965557505683\n ],\n [\n -146.3818359375,\n 61.14323525084058\n ],\n [\n -156.62109374999997,\n 61.14323525084058\n ],\n [\n -156.62109374999997,\n 56.0965557505683\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"107","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c90130e4b0849ce97abd5d","contributors":{"authors":[{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":684361,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lensink, Calvin J.","contributorId":99612,"corporation":false,"usgs":false,"family":"Lensink","given":"Calvin","email":"","middleInitial":"J.","affiliations":[{"id":33810,"text":"National Wildlife Refuge Association","active":true,"usgs":false}],"preferred":false,"id":684362,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Butler, William","contributorId":189279,"corporation":false,"usgs":false,"family":"Butler","given":"William","affiliations":[],"preferred":false,"id":684363,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kendziorek, Marshal","contributorId":189280,"corporation":false,"usgs":false,"family":"Kendziorek","given":"Marshal","email":"","affiliations":[],"preferred":false,"id":684364,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nysewander, David R.","contributorId":23036,"corporation":false,"usgs":true,"family":"Nysewander","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":785429,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70185104,"text":"70185104 - 1990 - Effects of human disturbance on breeding Least and Crested Auklets at St. Lawrence Island, Alaska ","interactions":[],"lastModifiedDate":"2017-03-15T09:54:45","indexId":"70185104","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Effects of human disturbance on breeding Least and Crested Auklets at St. Lawrence Island, Alaska ","docAbstract":"

We studied breeding success, chick growth, and diets of Least (Aethia pusilla) and Crested (A. cristatella) auklets on St. Lawrence Island, Alaska, in summer 1987. Least Auklets had higher breeding success on control plots (50-66%) than on disturbed plots (36%). Crested Auklets had a breeding success of 42% on disturbed plots. Predation by microtine rodents and weather accounted for most natural chick mortality. Least Auklet chicks grew at a maximum rate of 4.9 g/day, and Crested Auklet chicks at 12.8 g/day. Least Auklet chicks were fed mostly copepods (Neocalanus plumchrus), whereas Crested Auklet chicks were fed Thysanoessa euphausiids.

","language":"English","publisher":"American Ornithological Society","doi":"10.2307/4087618","usgsCitation":"Piatt, J.F., Roberts, B.D., Lidster, W.W., Wells, J.L., and Hatch, S.A., 1990, Effects of human disturbance on breeding Least and Crested Auklets at St. Lawrence Island, Alaska : The Auk, v. 107, no. 2, p. 342-350, https://doi.org/10.2307/4087618.","productDescription":"9 p.","startPage":"342","endPage":"350","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":479815,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/4087618","text":"Publisher Index Page"},{"id":337569,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"St. Lawrence Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -172.0294189453125,\n 63.27812271092345\n ],\n [\n -171.18347167968747,\n 63.27812271092345\n ],\n [\n -171.18347167968747,\n 63.84793280019531\n ],\n [\n -172.0294189453125,\n 63.84793280019531\n ],\n [\n -172.0294189453125,\n 63.27812271092345\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"107","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c90130e4b0849ce97abd5f","contributors":{"authors":[{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":684356,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roberts, Bay D.","contributorId":181868,"corporation":false,"usgs":false,"family":"Roberts","given":"Bay","email":"","middleInitial":"D.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":684357,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lidster, Wayne W.","contributorId":189277,"corporation":false,"usgs":false,"family":"Lidster","given":"Wayne","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":684358,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wells, John L.","contributorId":189278,"corporation":false,"usgs":false,"family":"Wells","given":"John","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":684359,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":684360,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70184660,"text":"70184660 - 1990 - Is the polar bear (Ursus maritimus) a hibernator? Continued studies on opioids and hibernation","interactions":[],"lastModifiedDate":"2017-05-16T09:29:31","indexId":"70184660","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5314,"text":"Pharmacology Biochemistry and Behavior","onlineIssn":"1873-5177","printIssn":"0091-3057","active":true,"publicationSubtype":{"id":10}},"title":"Is the polar bear (Ursus maritimus) a hibernator? Continued studies on opioids and hibernation","docAbstract":"

Polar bear behavior and biochemistry suggest they may have the ability to hibernate year-round, even though this species is not considered to be a true hibernator. This observation, plus the discovery of a hibernation-induced trigger (HIT) in the blood of black bears, prompted the examination of polar bear blood collected thoughout the year for evidence ofr HIT, and to determine if it displayed opioid activity, as black bear blood does. A bioassay was conducted by injected summer 13-lined ground squirrels with serum collected from polar bears at different seasons. One group of squirrels was previously implanted with osmotic pumps containing naloxone. The rest had pumps containing saline. Squirrels with saline pumps all hibernated significantly more than those with naloxone, except the group receiving blood from a November polar bear, observed to be highly active and hyperphagic. An in vitro study, using guinea pig ileum, showed that 400 nM morphine inhibited induced contractions and 100 nM naloxone reversed the inhibition. Ten mg of winter polar bear serum albumin fraction (to which HIT binds in ground squirrels and woodchucks) had a similar inhibiting effect, but naloxone, even at 4,000 nM, didn't reverse it. It is concluded that polar bear contains HIT, that it has an opioid effct, but may not itself be an opioid.

","language":"English","publisher":"Elsevier","doi":"10.1016/0091-3057(90)90311-5","usgsCitation":"Bruce, D.S., Darling, N.K., Seeland, K.J., Oeltgen, P.R., Nilekani, S.P., and Amstrup, S.C., 1990, Is the polar bear (Ursus maritimus) a hibernator? Continued studies on opioids and hibernation: Pharmacology Biochemistry and Behavior, v. 35, no. 3, p. 705-711, https://doi.org/10.1016/0091-3057(90)90311-5.","productDescription":"7 p.","startPage":"705","endPage":"711","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337393,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c951e4b0f37a93ee9b88","contributors":{"authors":[{"text":"Bruce, David S.","contributorId":188228,"corporation":false,"usgs":false,"family":"Bruce","given":"David","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":682450,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Darling, Nancy K.","contributorId":188229,"corporation":false,"usgs":false,"family":"Darling","given":"Nancy","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":682451,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Seeland, Katheleen J.","contributorId":188230,"corporation":false,"usgs":false,"family":"Seeland","given":"Katheleen","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":682452,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Oeltgen, Peter R.","contributorId":188231,"corporation":false,"usgs":false,"family":"Oeltgen","given":"Peter","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":682453,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nilekani, Sita P.","contributorId":188232,"corporation":false,"usgs":false,"family":"Nilekani","given":"Sita","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":682454,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Amstrup, Steven C.","contributorId":67034,"corporation":false,"usgs":false,"family":"Amstrup","given":"Steven","email":"","middleInitial":"C.","affiliations":[{"id":13182,"text":"Polar Bears International","active":true,"usgs":false}],"preferred":false,"id":682455,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70015913,"text":"70015913 - 1990 - Kilbuck terrane: Oldest known rocks in Alaska","interactions":[],"lastModifiedDate":"2024-01-24T01:24:40.898038","indexId":"70015913","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Kilbuck terrane: Oldest known rocks in Alaska","docAbstract":"

The Kilbuck terrane in southwestern Alaska is a narrow, thin crustal sliver or flake of amphibolite facies orthogneiss. The igneous protolith of this gneiss was a suite of subduction-related platonic rocks. U-Pb data on zircons from trondhjemitic and granitic samples yield upper-intercept (igneous) ages of 2070 ±16 and 2040 ±74 Ma, respectively. Nd isotope data from these rocks suggest that a diorite-tonalite-trondhjemite suite (εNd [T] = +2.1 to +2.7; T is time of crystallization) evolved from partial melts of depleted mantle with no discernible contamination by older crust, whereas a coeval granitic pluton (εNd [T] = -5.7) contains a significant component derived from Archean crust. Orthogneisses with similar age and Nd isotope characteristics are found in the Idono complex 250 km to the north. Early Proterozoic rocks are unknown elsewhere in Alaska. However, Phanerozoic plutons cutting several \"continental\" terranes in Alaska (southern Brooks Range and Ruby, Seward, and Yukon-Tanana terranes) have Nd isotope compositions indicative of Early Proterozoic (or older) crustal components that could be correlative with rocks of the Kilbuck terrane. Rocks with similar igneous ages in cratonal North America are rare, and those few that are known have Nd isotope compositions distinct from those of the Kilbuck terrane. Conversely, provinces with Nd model ages off 2.0-2.1 Ga are characterized by extensive 1.8 Ga or younger plutonism, which is unknown in the Kilbuck terrane. At present the case for a North American parentage of the Kilbuck terrane is not compelling. The possibility that the Kilbuck terrane was displaced from provinces off similar age in other cratons (e.g., Australian, Baltic, Guiana, and west African shields), or from the poorly dated Siberian craton, cannot be excluded.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1990)018<1219:KTOKRI>2.3.CO;2","issn":"00917613","usgsCitation":"Box, S.E., Moll-Stalcup, E.J., Wooden, J.L., and Bradshaw, J., 1990, Kilbuck terrane: Oldest known rocks in Alaska: Geology, v. 18, no. 12, p. 1219-1222, https://doi.org/10.1130/0091-7613(1990)018<1219:KTOKRI>2.3.CO;2.","productDescription":"4 p.","startPage":"1219","endPage":"1222","numberOfPages":"4","costCenters":[],"links":[{"id":223236,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4092e4b0c8380cd64e7a","contributors":{"authors":[{"text":"Box, S. E.","contributorId":38567,"corporation":false,"usgs":true,"family":"Box","given":"S.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":372065,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moll-Stalcup, E. J.","contributorId":26698,"corporation":false,"usgs":true,"family":"Moll-Stalcup","given":"E.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":372063,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":372066,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bradshaw, J.Y.","contributorId":28374,"corporation":false,"usgs":true,"family":"Bradshaw","given":"J.Y.","email":"","affiliations":[],"preferred":false,"id":372064,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70015912,"text":"70015912 - 1990 - The theory and prototype development of a stress-monitoring system","interactions":[],"lastModifiedDate":"2023-10-26T23:57:41.027667","indexId":"70015912","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"The theory and prototype development of a stress-monitoring system","docAbstract":"

A new approach has been developed by which changes in rock stress can be measured directly. The measurement of stress change depends on the reaction of a slender, compliant cavity to the transient variations of rock stress about the cavity. A liquid-filled pressurized cell, emplaced in the cavity, provides the means by which changes in pressure can be monitored. The change in pressure in the cell is equivalent to the change in rock stress in the direction normal to the cell if the compliance contrast between cavity and rock is large and the aspect ratio of the cavity is small. Earthquake-related variations in the stress field in a highly fractured quartz-monzonite stock have been observed to occur in a characteristic way prior to a microseismic event. The precursory stress change (decompression followed by compression) lasted about 5 hours and led directly to a stress drop of 15 × 10−3 bar. Seismic noise monitored during the same period of time suggests that failure in the fractured rock mass resulted from rapid encroachment of meltwater and subsequent increase in fluid pressure.

","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0800010197","usgsCitation":"Swolfs, H., and Walsh, J., 1990, The theory and prototype development of a stress-monitoring system: Bulletin of the Seismological Society of America, v. 80, no. 1, p. 197-208, https://doi.org/10.1785/BSSA0800010197.","productDescription":"12 p.","startPage":"197","endPage":"208","numberOfPages":"12","costCenters":[],"links":[{"id":422166,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.geoscienceworld.org/ssa/bssa/article/80/1/197/119326/The-theory-and-prototype-development-of-a-stress"},{"id":223235,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"80","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb0f2e4b08c986b325154","contributors":{"authors":[{"text":"Swolfs, H.S.","contributorId":70759,"corporation":false,"usgs":true,"family":"Swolfs","given":"H.S.","affiliations":[],"preferred":false,"id":372062,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walsh, J.B.","contributorId":63846,"corporation":false,"usgs":true,"family":"Walsh","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":372061,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015910,"text":"70015910 - 1990 - A decade of dome growth at Mount St. Helens, 1980-90","interactions":[],"lastModifiedDate":"2012-03-12T17:18:46","indexId":"70015910","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1813,"text":"Geoscience Canada","active":true,"publicationSubtype":{"id":10}},"title":"A decade of dome growth at Mount St. Helens, 1980-90","docAbstract":"The growth of the dacite dome at Mount St. Helens between 1980 and 1986 has been more intensively studied than that of any other dome-building eruption. The growth has been complex in detail, but remarkably regular overall. This paper summarizes some of what has been learned and provides many references to additional information. Whether dome building has ended is an open question, particularly in view of the renewed, though minor, explosive activity of late 1989 and early 1990. -Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geoscience Canada","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03150941","usgsCitation":"Swanson, D.A., 1990, A decade of dome growth at Mount St. Helens, 1980-90: Geoscience Canada, v. 17, no. 3, p. 154-157.","startPage":"154","endPage":"157","numberOfPages":"4","costCenters":[],"links":[{"id":223185,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3a9e4b0c8380cd4616b","contributors":{"authors":[{"text":"Swanson, D. A.","contributorId":34102,"corporation":false,"usgs":true,"family":"Swanson","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":372058,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015906,"text":"70015906 - 1990 - Relations of zoned pegmatites to other pegmatites, granite, and metamorphic rocks in the southern Black Hills, South Dakota","interactions":[],"lastModifiedDate":"2012-03-12T17:18:46","indexId":"70015906","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Relations of zoned pegmatites to other pegmatites, granite, and metamorphic rocks in the southern Black Hills, South Dakota","docAbstract":"The pegmatite field and the Harney Peak Granite of the southern Black Hills, South Dakota, form an igneous system that progresses from slightly biotitic muscovite granite through layered pegmatitic granite, with alternating sodic and potassic rocks, to simple plagioclase-quartz-perthite pegmatites, and on to zoned pegmatites. Most of the country rocks are Lower Proterozoic mica schists. At 1700 Ga, intrusion of the Harney Peak Granite created a large dome in these rocks, a thermal aureole with a staurolite, a first sillimanite isograd, and a small area of metamorphism above the second sillimanite isograd. The zoned pegmatites have a strong tendency to occur in clusters, and the types of pegmatites are different in different clusters. A less obvious tendency is a regional zonation in which rare-mineral pegmatites become more abundant and muscovite pegmatites less abundant toward the outskirts of the region. The composition of the granite indicates that its magma originated by partial melting of metasedimentary mica schists similar to those at the present surface. The pegmatitic nature of most of the granite probably reflects exsolution of an aqueous phase. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Norton, J., and Redden, J., 1990, Relations of zoned pegmatites to other pegmatites, granite, and metamorphic rocks in the southern Black Hills, South Dakota: American Mineralogist, v. 75, no. 5-6, p. 631-655.","startPage":"631","endPage":"655","numberOfPages":"25","costCenters":[],"links":[{"id":223135,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"5-6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a727e4b0e8fec6cdc3c3","contributors":{"authors":[{"text":"Norton, J.J.","contributorId":25573,"corporation":false,"usgs":true,"family":"Norton","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":372047,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Redden, J. A.","contributorId":62215,"corporation":false,"usgs":true,"family":"Redden","given":"J. A.","affiliations":[],"preferred":false,"id":372048,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015847,"text":"70015847 - 1990 - Late Pleistocene and Holocene sedimentary facies on the Ebro continental shelf","interactions":[],"lastModifiedDate":"2024-10-01T11:09:00.7784","indexId":"70015847","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Late Pleistocene and Holocene sedimentary facies on the Ebro continental shelf","docAbstract":"
Late Pleistocene—Holocene history of the Ebro continental shelf of northeastern Spain is recorded in two main sedimentary units: (1) a lower, transgressive unit that covers the shelf and is exposed on the outer shelf south of 40°40′N, and (2) an upper, progradational, prodeltaic unit that borders the Ebro Delta and extends southward along the inner shelf. The lower transgressive unit includes a large linear shoal found at a water depth of 90 m and hardground mounds at water depths of 70–80 m. Some patches of earlier Pleistocene prodelta mud remain also, exposed or covered by a thin veneer of transgressive sand on the northern outer shelf. This relict sand sheet is 2–3 m thick and contains 9000–12,500 yr old oyster and other shells at water depths of 78–88 m.
The upper prodelta unit covers most of the inner shelf from water depths of 20–80 m and extends from the present Ebro River Delta to an area to the southwest where the unit progressively thins and narrows. Interpretation of high-resolution seismic reflection data shows the following facies occurring progressively offshore: (1) a thick stratified facies with thin progradational “foresets beds”, (2) a faintly laminated facies with sparse reflectors of low continuity, and (3) a thin transparent bottomset facies underlain by a prominent flat-lying reflector. Deposition in the northern half of the prodelta began as soon as the shoreline transgressed over the mid-shelf, but progradation of the southern half did not begin until about 1000–3000 yrs after the transgression.
A classic deltaic progradational sequence is shown in the Ebro prodelta mud by (1) gradation of seismic facies away from the delta, (2) coarsening-upward sequences near the delta and fining-upward sequences in the distal mud belt deposits, and (3) thin storm-sand layers and shell lags in the nearshore stratified facies. The boundaries of the prodeltaic unit are controlled by increased current speeds on the outer shelf (where the shelf narrows) and by development of the shoreface sand body resulting from shoaling waves on the inner shelf.

","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(90)90123-2","issn":"00253227","usgsCitation":"Diaz, J., Nelson, C., Barber, J.H., and Giro, S., 1990, Late Pleistocene and Holocene sedimentary facies on the Ebro continental shelf: Marine Geology, v. 95, no. 3-4, p. 333-352, https://doi.org/10.1016/0025-3227(90)90123-2.","productDescription":"20 p.","startPage":"333","endPage":"352","numberOfPages":"20","costCenters":[],"links":[{"id":223079,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"95","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a450ce4b0c8380cd66fc0","contributors":{"authors":[{"text":"Diaz, J.","contributorId":51463,"corporation":false,"usgs":true,"family":"Diaz","given":"J.","affiliations":[],"preferred":false,"id":371909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nelson, C.H.","contributorId":88346,"corporation":false,"usgs":true,"family":"Nelson","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":371912,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barber, J. H. Jr.","contributorId":82275,"corporation":false,"usgs":true,"family":"Barber","given":"J.","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":371911,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Giro, S.","contributorId":70926,"corporation":false,"usgs":true,"family":"Giro","given":"S.","email":"","affiliations":[],"preferred":false,"id":371910,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70015846,"text":"70015846 - 1990 - Geologic map of Mount Mazama, Crater Lake, Oregon","interactions":[],"lastModifiedDate":"2012-03-12T17:18:45","indexId":"70015846","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Geologic map of Mount Mazama, Crater Lake, Oregon","docAbstract":"Crater Lake caldera collapsed about 6,850 yr B.P. during the climactic eruption of Mount Mazama, a High Cascade basaltic andesitic to dacitic volcanic center that was constructed during a period of about 400,000 yr. The caldera and the products of the climactic eruption are clear evidence for the presence of a shallow magma body that must have supported a hydrothermal system in the recent past. The geology of Mount Mazama has been mapped at a scale of 1:24,000 based on detailed study of the walls of Crater Lake caldera and mapping of the flanks of the volcano. The map shows lavas and fragmental deposits of Mount Mazama, lavas of nearby monogenetic volcanoes, pre-Mazama silicic volcanic rocks, products of the climactic eruption, and glacial deposits. Related topical studies of the volcanology, geochronology, petrology, and geochemistry of the Crater Lake area depend on field relations established by geologic mapping.","largerWorkTitle":"Transactions - Geothermal Resources Council","conferenceTitle":"1990 International Symposium on Geothermal Energy","conferenceDate":"20 August 1990 through 24 August 1990","conferenceLocation":"Kailua-Kona, HI, USA","language":"English","publisher":"Publ by Geothermal Resources Council","publisherLocation":"Davis, CA, United States","issn":"01935933","isbn":"0934412685","usgsCitation":"Bacon, C., 1990, Geologic map of Mount Mazama, Crater Lake, Oregon, in Transactions - Geothermal Resources Council, v. 14, no. pt 2, Kailua-Kona, HI, USA, 20 August 1990 through 24 August 1990, p. 1377-1379.","startPage":"1377","endPage":"1379","numberOfPages":"3","costCenters":[],"links":[{"id":223078,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"pt 2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1a41e4b0c8380cd55bce","contributors":{"authors":[{"text":"Bacon, Charles","contributorId":64705,"corporation":false,"usgs":true,"family":"Bacon","given":"Charles","email":"","affiliations":[],"preferred":false,"id":371908,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015844,"text":"70015844 - 1990 - Phytoplankton dynamics in three Rocky Mountain lakes, Colorado, USA","interactions":[],"lastModifiedDate":"2020-11-06T17:04:31.247207","indexId":"70015844","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":898,"text":"Arctic and Alpine Research","active":true,"publicationSubtype":{"id":10}},"title":"Phytoplankton dynamics in three Rocky Mountain lakes, Colorado, USA","docAbstract":"

In 1984 and 1985 seasonal changes in phytoplankton were studied in a system of three lakes in Loch Vale, Rocky Mountain National Park, Colorado. Three periods were evident: (1) A spring bloom, during snowmelt, of the planktonic diatom Asterionella formosa, (2) a mid-summer period of minimal algal abundance, and (3) a fall bloom of the blue-green alga Oscillatoria limnetica. Seasonal phytoplankton dynamics in these lakes are controlled partially by the rapid flushing rate during snowmelt and the transport of phytoplankton from the highest lake to the lower lakes by the stream, Icy Brook. During snowmelt, the A. formosa population in the most downstream lake has a net rate of increase of 0.34 d-1, which is calculated from the flushing rate and from the A. formosa abundance in the inflow from the upstream lake and in the downstream lake. Measurement of photosynthetic rates at different depths during the three periods confirmed the rapid growth of A. formosa during the spring. The decline in A. formosa after snowmelt may be related to grazing by developing zooplankton populations. The possible importance of the seasonal variations in nitrate concentrations were evaluated in situ enrichment experiments. For A. formosa and O. limnetica populations, growth stimulation resulted from 8- or 16-micromolar amendments of calcium nitrate and sulfuric acid, but the reason for this stimulation could not be determined from these experiments.

","language":"English","publisher":"Taylor & Francis","doi":"10.2307/1551589","usgsCitation":"McKnight, D.M., Smith, R.L., Bradbury, J.P., Baron, J., and Spaulding, S.A., 1990, Phytoplankton dynamics in three Rocky Mountain lakes, Colorado, USA: Arctic and Alpine Research, v. 22, no. 3, p. 264-274, https://doi.org/10.2307/1551589.","productDescription":"11 p.","startPage":"264","endPage":"274","costCenters":[{"id":40553,"text":"WMA - Office of the Chief Operating Officer","active":true,"usgs":true}],"links":[{"id":223029,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Glass Lake, Sky Pond, The Loch","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.66053867340088,\n 40.29026356570576\n ],\n [\n -105.65397262573242,\n 40.29026356570576\n ],\n [\n -105.65397262573242,\n 40.294551700286306\n ],\n [\n -105.66053867340088,\n 40.294551700286306\n ],\n [\n -105.66053867340088,\n 40.29026356570576\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.66755533218382,\n 40.280245946971625\n ],\n [\n -105.66429376602173,\n 40.280245946971625\n ],\n [\n -105.66429376602173,\n 40.28315972120923\n ],\n [\n -105.66755533218382,\n 40.28315972120923\n ],\n [\n -105.66755533218382,\n 40.280245946971625\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.67180395126341,\n 40.27657899643966\n ],\n [\n -105.66710472106934,\n 40.27657899643966\n ],\n [\n -105.66710472106934,\n 40.27944381853661\n ],\n [\n -105.67180395126341,\n 40.27944381853661\n ],\n [\n -105.67180395126341,\n 40.27657899643966\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"22","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7b38e4b0c8380cd7930d","contributors":{"authors":[{"text":"McKnight, Diane M.","contributorId":59773,"corporation":false,"usgs":false,"family":"McKnight","given":"Diane","email":"","middleInitial":"M.","affiliations":[{"id":16833,"text":"INSTAAR, University of Colorado","active":true,"usgs":false}],"preferred":false,"id":371901,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Richard L. 0000-0002-3829-0125 rlsmith@usgs.gov","orcid":"https://orcid.org/0000-0002-3829-0125","contributorId":1592,"corporation":false,"usgs":true,"family":"Smith","given":"Richard","email":"rlsmith@usgs.gov","middleInitial":"L.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":371903,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bradbury, J. Platt","contributorId":91106,"corporation":false,"usgs":true,"family":"Bradbury","given":"J.","email":"","middleInitial":"Platt","affiliations":[],"preferred":false,"id":371899,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baron, Jill 0000-0002-5902-6251 jill_baron@usgs.gov","orcid":"https://orcid.org/0000-0002-5902-6251","contributorId":194124,"corporation":false,"usgs":true,"family":"Baron","given":"Jill","email":"jill_baron@usgs.gov","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":371900,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Spaulding, Sarah A. 0000-0002-9787-7743 sspaulding@usgs.gov","orcid":"https://orcid.org/0000-0002-9787-7743","contributorId":1157,"corporation":false,"usgs":true,"family":"Spaulding","given":"Sarah","email":"sspaulding@usgs.gov","middleInitial":"A.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"preferred":true,"id":371902,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70015842,"text":"70015842 - 1990 - Geothermal systems within the Mammoth Corridor in Yellowstone National Park and the adjacent Corwin Springs KGRA","interactions":[],"lastModifiedDate":"2012-03-12T17:18:44","indexId":"70015842","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Geothermal systems within the Mammoth Corridor in Yellowstone National Park and the adjacent Corwin Springs KGRA","docAbstract":"A study of potential impacts of geothermal development in the Corwin Springs KGRA north of Yellowstone Park on thermal springs within the Park is being conducted by the U.S. Geological Survey. Thermal waters in the KGRA and at Mammoth Hot Springs, located 13 km inside the Park boundary, are high in bicarbonate and sulfate and are actively depositing travertine. These similarities and the existence of numerous regional-scale structural and stratigraphic features that could provide conduits for fluid flow at depth indicate a possible cause for concern. The objectives of this study include delineations of any hydrologic connections between these thermal waters, the level of impact of geothermal development in the event of such connections, and mitigation measures to minimize or eliminate adverse impacts. The study involves a number of geochemical, geophysical, geologic, and hydrologic techniques, but does not include any test drilling. Preliminary results suggest that thermal waters at Bear Creek Springs may contain a component of water derived from Mammoth but that thermal waters at La Duke Hot Spring do not. The total rate of thermal water that discharges in the area proposed for geothermal development (near La Duke) has been determined; restricting the net production of thermal water to rates less than this total could provide a satisfactory margin of safety for development.","largerWorkTitle":"Transactions - Geothermal Resources Council","conferenceTitle":"1990 International Symposium on Geothermal Energy","conferenceDate":"20 August 1990 through 24 August 1990","conferenceLocation":"Kailua-Kona, HI, USA","language":"English","publisher":"Publ by Geothermal Resources Council","publisherLocation":"Davis, CA, United States","issn":"01935933","isbn":"0934412677","usgsCitation":"Sorey, M., Colvard, E., and Sturchio, N., 1990, Geothermal systems within the Mammoth Corridor in Yellowstone National Park and the adjacent Corwin Springs KGRA, in Transactions - Geothermal Resources Council, v. 14, no. pt 1, Kailua-Kona, HI, USA, 20 August 1990 through 24 August 1990, p. 729-733.","startPage":"729","endPage":"733","numberOfPages":"5","costCenters":[],"links":[{"id":223027,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"pt 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a28dde4b0c8380cd5a4a7","contributors":{"authors":[{"text":"Sorey, Michael","contributorId":49933,"corporation":false,"usgs":true,"family":"Sorey","given":"Michael","email":"","affiliations":[],"preferred":false,"id":371897,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Colvard, Elizabeth","contributorId":29135,"corporation":false,"usgs":true,"family":"Colvard","given":"Elizabeth","affiliations":[],"preferred":false,"id":371896,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sturchio, N.C.","contributorId":16580,"corporation":false,"usgs":true,"family":"Sturchio","given":"N.C.","affiliations":[],"preferred":false,"id":371895,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70015840,"text":"70015840 - 1990 - Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data","interactions":[],"lastModifiedDate":"2020-05-07T14:43:59.424904","indexId":"70015840","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data","docAbstract":"

Several regional seismic refraction and magnetotelluric (MT) profiles have been completed across the Cascade Range and surrounding geologic provinces in California, Oregon, and Washington. Analysis of three MT and two seismic refraction profiles in Oregon and a coincident MT and refraction profile in northern California show a high degree of correlation between resistivity and velocity models. The main feature that is evident in both data sets is a highly conductive (2-20 ohm m) zone that occurs at depths of 6-20 km and largely within a midcrustal velocity layer of 6.4-6.6 km/s, overlying a lower crust with velocities of 7.0-7.4 km/s. Accretionary structures in the southern Washington Cascades have been shown to be related to stress release in the area of Mount St. Helens. In order to explain the similar structures in the MT and refraction models for Oregon and California, a model is proposed involving the effects of metamorphic zonation to produce the velocity structure, combined with metamorphically produced fluids and partial melt to produce the deep conductor. 

","largerWorkTitle":"","language":"English","publisher":"AGU","doi":"10.1029/JB095iB12p19419","issn":"01480227","usgsCitation":"Stanley, W., Mooney, W.D., and Fuis, G.S., 1990, Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data: Journal of Geophysical Research, v. 95, no. B12, p. 19419-19438, https://doi.org/10.1029/JB095iB12p19419.","productDescription":"20 p.","startPage":"19419","endPage":"19438","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":222976,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Oregon, Washington","otherGeospatial":"Cascade Range","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -124.16748046874999,\n 39.45316112807394\n ],\n [\n -119.794921875,\n 40.027614437486655\n ],\n [\n -119.794921875,\n 48.951366470947725\n ],\n [\n -122.51953124999999,\n 48.951366470947725\n ],\n [\n -124.16748046874999,\n 39.45316112807394\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"95","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059fe1ee4b0c8380cd4eb23","contributors":{"authors":[{"text":"Stanley, William D.","contributorId":23274,"corporation":false,"usgs":true,"family":"Stanley","given":"William D.","affiliations":[],"preferred":false,"id":371892,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":371890,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuis, Gary S. 0000-0002-3078-1544 fuis@usgs.gov","orcid":"https://orcid.org/0000-0002-3078-1544","contributorId":2639,"corporation":false,"usgs":true,"family":"Fuis","given":"Gary","email":"fuis@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":371891,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70015791,"text":"70015791 - 1990 - A Miocene termite nest from southern Argentina and its paleoclimatological implications","interactions":[],"lastModifiedDate":"2018-03-06T14:55:01","indexId":"70015791","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1965,"text":"Ichnos: An International Journal for Plant and Animal Traces","onlineIssn":"1563-5236","printIssn":"1042-0940","active":true,"publicationSubtype":{"id":10}},"title":"A Miocene termite nest from southern Argentina and its paleoclimatological implications","docAbstract":"

A Miocene termitarium attributable to the extant termite Syntermes (Isoptera: Termitidae, Nasutitermitinae) is the first fossil termite nest reported from South America and possibly the oldest record of the Isoptera from that continent. The fossil remains consist of most of the periphery of the subterranean portion of a single Syntermes nest, including chambers and both major and minor systems of anastomosed galleries. The nest occurs in the upper part of a mature paleosol near the base of the pyroclastic and eolian Miocene Pinturas Formation.

A new ichnogenus and ichnospecies, Syntermesichnus fon‐tanae, is proposed for this distinctive trace fossil. It differs from nests constructed by other members of the Nasutitermitinae in its architectural organization and its large size. The type locality is situated 20° south of the southernmost dispersion of extant Syntermes.The modern distribution of this termite is wholly neotropical, suggesting that at least part of southern Patagonia experienced a tropical to subtropical climate as late as the late‐early Miocene.

","language":"English","publisher":"Taylor & Francis","doi":"10.1080/10420949009386336","usgsCitation":"Bown, T.M., and Laza, J.H., 1990, A Miocene termite nest from southern Argentina and its paleoclimatological implications: Ichnos: An International Journal for Plant and Animal Traces, v. 1, no. 2, p. 73-79, https://doi.org/10.1080/10420949009386336.","productDescription":"7 p.","startPage":"73","endPage":"79","costCenters":[],"links":[{"id":223844,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Argentina","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-65.5,-55.2],[-66.45,-55.25],[-66.95992,-54.89681],[-67.56244,-54.87001],[-68.63335,-54.8695],[-68.63401,-52.63637],[-68.25,-53.1],[-67.75,-53.85],[-66.45,-54.45],[-65.05,-54.7],[-65.5,-55.2]]],[[[-64.96489,-22.07586],[-64.37702,-22.79809],[-63.98684,-21.99364],[-62.84647,-22.03499],[-62.68506,-22.24903],[-60.84656,-23.88071],[-60.02897,-24.0328],[-58.80713,-24.77146],[-57.77722,-25.16234],[-57.63366,-25.60366],[-58.61817,-27.12372],[-57.60976,-27.3959],[-56.4867,-27.5485],[-55.69585,-27.38784],[-54.78879,-26.62179],[-54.62529,-25.73926],[-54.13005,-25.54764],[-53.62835,-26.12487],[-53.64874,-26.92347],[-54.49073,-27.47476],[-55.16229,-27.88192],[-56.2909,-28.85276],[-57.62513,-30.21629],[-57.87494,-31.01656],[-58.14244,-32.0445],[-58.13265,-33.04057],[-58.34961,-33.26319],[-58.42707,-33.90945],[-58.49544,-34.43149],[-57.22583,-35.28803],[-57.36236,-35.97739],[-56.73749,-36.41313],[-56.78829,-36.90157],[-57.74916,-38.18387],[-59.23186,-38.72022],[-61.23745,-38.92842],[-62.33596,-38.82771],[-62.12576,-39.4241],[-62.33053,-40.17259],[-62.14599,-40.6769],[-62.7458,-41.02876],[-63.77049,-41.16679],[-64.73209,-40.80268],[-65.11804,-41.06431],[-64.97856,-42.058],[-64.30341,-42.35902],[-63.75595,-42.04369],[-63.45806,-42.56314],[-64.3788,-42.87356],[-65.1818,-43.49538],[-65.32882,-44.50137],[-65.56527,-45.03679],[-66.50997,-45.03963],[-67.29379,-45.5519],[-67.58055,-46.30177],[-66.59707,-47.03392],[-65.64103,-47.23613],[-65.98509,-48.13329],[-67.16618,-48.69734],[-67.81609,-49.86967],[-68.72875,-50.26422],[-69.13854,-50.73251],[-68.81556,-51.7711],[-68.14999,-52.34998],[-68.57155,-52.29944],[-69.49836,-52.14276],[-71.9148,-52.00902],[-72.3294,-51.42596],[-72.30997,-50.67701],[-72.97575,-50.74145],[-73.32805,-50.37879],[-73.41544,-49.31844],[-72.64825,-48.87862],[-72.33116,-48.24424],[-72.44736,-47.73853],[-71.91726,-46.88484],[-71.55201,-45.56073],[-71.65932,-44.97369],[-71.22278,-44.78424],[-71.3298,-44.40752],[-71.79362,-44.20717],[-71.46406,-43.78761],[-71.91542,-43.40856],[-72.1489,-42.25489],[-71.7468,-42.05139],[-71.91573,-40.83234],[-71.68076,-39.80816],[-71.41352,-38.91602],[-70.81466,-38.553],[-71.11863,-37.57683],[-71.12188,-36.65812],[-70.36477,-36.00509],[-70.38805,-35.16969],[-69.81731,-34.19357],[-69.81478,-33.27389],[-70.0744,-33.09121],[-70.53507,-31.36501],[-69.91901,-30.33634],[-70.01355,-29.36792],[-69.65613,-28.45914],[-69.00123,-27.52121],[-68.29554,-26.89934],[-68.5948,-26.50691],[-68.386,-26.18502],[-68.41765,-24.51855],[-67.32844,-24.0253],[-66.98523,-22.98635],[-67.10667,-22.73592],[-66.27334,-21.83231],[-64.96489,-22.07586]]]]},\"properties\":{\"name\":\"Argentina\"}}]}","volume":"1","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e2ebe4b0c8380cd45d23","contributors":{"authors":[{"text":"Bown, Thomas M.","contributorId":67081,"corporation":false,"usgs":true,"family":"Bown","given":"Thomas","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":371777,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Laza, Jose H.","contributorId":101021,"corporation":false,"usgs":false,"family":"Laza","given":"Jose","email":"","middleInitial":"H.","affiliations":[{"id":27429,"text":"División Paleontología Vertebrados, Unidades de Investigación, Anexo Museo de La Plata, 122 y 60, CP 1900 La Plata, Buenos Aires Province, Argentina","active":true,"usgs":false}],"preferred":false,"id":371776,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":2002138,"text":"2002138 - 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