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,{"id":95220,"text":"95220 - 1990 - Passive hemolytic plaque assay for detecting antibody-producing cells in fish","interactions":[],"lastModifiedDate":"2012-02-02T00:03:52","indexId":"95220","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Passive hemolytic plaque assay for detecting antibody-producing cells in fish","docAbstract":"No abstract available at this time","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Techniques Fish Immunology","largerWorkSubtype":{"id":9,"text":"Other Report"},"language":"English","publisher":"SOS Publications","publisherLocation":"Fair Haven, NJ","collaboration":"90-043/FH","usgsCitation":"Anderson, D.P., 1990, Passive hemolytic plaque assay for detecting antibody-producing cells in fish, chap. of Techniques Fish Immunology, p. 9-13.","productDescription":"p. 9-13","startPage":"9","endPage":"13","numberOfPages":"5","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":127153,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688c75","contributors":{"editors":[{"text":"Stolen, J.S.","contributorId":113802,"corporation":false,"usgs":true,"family":"Stolen","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":505396,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Fletcher, T.C.","contributorId":95392,"corporation":false,"usgs":true,"family":"Fletcher","given":"T.C.","email":"","affiliations":[],"preferred":false,"id":505393,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Anderson, D. P.","contributorId":32469,"corporation":false,"usgs":true,"family":"Anderson","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":505392,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Roberson, B.S.","contributorId":103986,"corporation":false,"usgs":true,"family":"Roberson","given":"B.S.","email":"","affiliations":[],"preferred":false,"id":505394,"contributorType":{"id":2,"text":"Editors"},"rank":4},{"text":"van Muiswinkel, W.B.","contributorId":113266,"corporation":false,"usgs":true,"family":"van Muiswinkel","given":"W.B.","email":"","affiliations":[],"preferred":false,"id":505395,"contributorType":{"id":2,"text":"Editors"},"rank":5}],"authors":[{"text":"Anderson, D. P.","contributorId":32469,"corporation":false,"usgs":true,"family":"Anderson","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":298688,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":96246,"text":"96246 - 1990 - Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound in southeast Florida during the winter of 1988-1989","interactions":[],"lastModifiedDate":"2012-02-02T00:03:53","indexId":"96246","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":4,"text":"Book"},"title":"Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound in southeast Florida during the winter of 1988-1989","docAbstract":"Abstract not supplied at this time","language":"English","publisher":"National Technical Information Service","publisherLocation":"Springfield, VA","usgsCitation":"Lefebvre, L., and Powell, J.A., 1990, Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound in southeast Florida during the winter of 1988-1989, 36 pp.","productDescription":"36 pp.","costCenters":[{"id":275,"text":"Florida Integrated Science Center","active":false,"usgs":true}],"links":[{"id":127275,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64ac41","contributors":{"authors":[{"text":"Lefebvre, L.W.","contributorId":78268,"corporation":false,"usgs":true,"family":"Lefebvre","given":"L.W.","email":"","affiliations":[],"preferred":false,"id":299342,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, J. A.","contributorId":69916,"corporation":false,"usgs":false,"family":"Powell","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":299341,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":87299,"text":"87299 - 1990 - Reintroduction of sea otters (Enhydra lutris) to San Nicolas Island, California: Preliminary results for the first year. Occasional papers, vol 3","interactions":[],"lastModifiedDate":"2012-02-02T00:03:58","indexId":"87299","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1500,"text":"Endangered Wildlife and Habitats in Southern California.","active":true,"publicationSubtype":{"id":10}},"title":"Reintroduction of sea otters (Enhydra lutris) to San Nicolas Island, California: Preliminary results for the first year. Occasional papers, vol 3","docAbstract":"No abstract available at this time","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Endangered Wildlife and Habitats in Southern California.","largerWorkSubtype":{"id":9,"text":"Other Report"},"language":"English","publisher":"Memoirs of the Natural History Foundation of Orange County, CA","publisherLocation":"Orange County, CA","usgsCitation":"Rathbun, G.B., Jameson, R., VanBlaricom, G., and Brownell, R., 1990, Reintroduction of sea otters (Enhydra lutris) to San Nicolas Island, California: Preliminary results for the first year. Occasional papers, vol 3: Endangered Wildlife and Habitats in Southern California., v. 3, p. 99-114.","productDescription":"p. 99-114","startPage":"99","endPage":"114","numberOfPages":"16","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":128431,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c3da","contributors":{"editors":[{"text":"Bryant, P.J.","contributorId":111588,"corporation":false,"usgs":true,"family":"Bryant","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":504932,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Remington, J.","contributorId":114038,"corporation":false,"usgs":true,"family":"Remington","given":"J.","email":"","affiliations":[],"preferred":false,"id":504933,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Rathbun, G. B.","contributorId":106044,"corporation":false,"usgs":true,"family":"Rathbun","given":"G.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":297612,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jameson, R.J.","contributorId":56581,"corporation":false,"usgs":true,"family":"Jameson","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":297609,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"VanBlaricom, G.R.","contributorId":94239,"corporation":false,"usgs":true,"family":"VanBlaricom","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":297611,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brownell, R.L.","contributorId":61369,"corporation":false,"usgs":true,"family":"Brownell","given":"R.L.","affiliations":[],"preferred":false,"id":297610,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016013,"text":"70016013 - 1990 - Volcanic geology and eruption frequency, São Miguel, Azores","interactions":[],"lastModifiedDate":"2015-05-29T13:38:25","indexId":"70016013","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"Volcanic geology and eruption frequency, São Miguel, Azores","docAbstract":"Six volcanic zones comprise São Miguel, the largest island in the Azores. All are Quaternary in age except the last, which is partly Pliocene. From west to east the zones are (1) the trachyte stratovolcano of Sete Cidades, (2) a field of alkali-basalt cinder cones and lava flows with minor trachyte, (3) the trachyte stratovolcano of Agua de Pau, (4) a field of alkali-basalt cinder cones and lava flows with minor trachyte and tristanite, (5) the trachyte stratovolcano of Furnas, and (6) the Nordeste shield, which includes the Povoação caldera and consists of alkali basalt, tristanite, and trachyte. New radiocarbon and K-Ar ages augment stratigraphic data obtained during recent geologic mapping of the entire island and provide improved data to interpret eruption frequency. Average dormant intervals for the past approximately 3000 years in the areas active during that time are about 400 years for Sete Cidades, 145 for zone 2, 1150 for Agua de Pau, and 370 for Furnas. However, the average dormant interval at Sete Cidades increased from 400 to about 680 years before each of the past two eruptions, and the interval at Furnas decreased from 370 to about 195 years before each of the past four eruptions. Eruptions in zone 4 occurred about once every 1000 years during latest Pleistocene and early Holocene time; none has occurred for about 3000 years. The Povoação caldera truncates part of the Nordeste shield and probably formed during the middle to late Pleistocene. Calderas formed during latest Pleistocene time at the three younger stratovolcanoes in the sequence: outer Agua de Pau (between 46 and 26.5 ka), Sete Cidades (about 22 ka), inner Agua de Pau (15.2 ka), and Furnas (about 12 ka). Normal faults are common, but many are buried by Holocene trachyte pumice. Most faults trend northwest or west-northwest and are related to the Terceira rift, whose most active segment on São Miguel passes through Sete Cidades and zone 2. A major normal fault displaces Nordeste lavas 150–250 m and may mark the location of an ancestral Terceira rift. Recent seismicity (e.g., in the 1980s) generally has been scattered, but some small earthquake swarms have occurred beneath the north-eastern flank of Agua de Pau.
","language":"English","publisher":"Springer","doi":"10.1007/BF00301211","issn":"02588900","usgsCitation":"Moore, R.B., 1990, Volcanic geology and eruption frequency, São Miguel, Azores: Bulletin of Volcanology, v. 52, no. 8, p. 602-614, https://doi.org/10.1007/BF00301211.","productDescription":"13 p.","startPage":"602","endPage":"614","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":223345,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205363,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00301211"}],"volume":"52","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc2eae4b08c986b32ae4a","contributors":{"authors":[{"text":"Moore, Richard B. rmoore@usgs.gov","contributorId":1464,"corporation":false,"usgs":true,"family":"Moore","given":"Richard","email":"rmoore@usgs.gov","middleInitial":"B.","affiliations":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":372343,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016055,"text":"70016055 - 1990 - The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault","interactions":[],"lastModifiedDate":"2023-10-26T11:27:40.45661","indexId":"70016055","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault","docAbstract":"The Pasadena earthquake (ML = 4.9) occurred on 3 December 1988, at a depth of 16 km. The hypocenters of the earthquake and its aftershocks define a east-northeast striking, steeply northwest-dipping surface that projects up to the active surficial trace of the Raymond fault. One of the nodal planes of the focal mechanism of the earthquake parallels the Raymond fault with left-lateral strike-slip movement on that plane, and is consistent with geomorphic and paleoseismic evidence that the Raymond fault is dominantly a left-lateral strike-slip fault. The existence of a component of sinistral slip along the Raymond fault had been suspected prior to the earthquake, but the northward dip of the fault and the prominent scarp along the western portion of its trace had led most workers to conclude that slip along the fault was dominantly reverse.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0800020474","usgsCitation":"Jones, L., Sieh, K., Hauksson, E., and Hutton, L., 1990, The 3 December 1988 Pasadena, California earthquake: Evidence for strike-slip motion on the Raymond Fault: Bulletin of the Seismological Society of America, v. 80, no. 2, p. 474-482, https://doi.org/10.1785/BSSA0800020474.","productDescription":"9 p.","startPage":"474","endPage":"482","numberOfPages":"9","costCenters":[],"links":[{"id":479841,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://authors.library.caltech.edu/37066/","text":"External Repository"},{"id":223244,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Pasadena","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.23169701853942,\n 34.241484962423115\n ],\n [\n -118.23169701853942,\n 34.081260776034796\n ],\n [\n -118.02844994822699,\n 34.081260776034796\n ],\n [\n -118.02844994822699,\n 34.241484962423115\n ],\n [\n -118.23169701853942,\n 34.241484962423115\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"80","issue":"2","noUsgsAuthors":false,"publicationDate":"1990-04-01","publicationStatus":"PW","scienceBaseUri":"505ba653e4b08c986b321067","contributors":{"authors":[{"text":"Jones, L.M.","contributorId":61433,"corporation":false,"usgs":true,"family":"Jones","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":372436,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sieh, K.E.","contributorId":107303,"corporation":false,"usgs":true,"family":"Sieh","given":"K.E.","affiliations":[],"preferred":false,"id":372438,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hauksson, E.","contributorId":10932,"corporation":false,"usgs":true,"family":"Hauksson","given":"E.","affiliations":[],"preferred":false,"id":372435,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hutton, L.K.","contributorId":66266,"corporation":false,"usgs":true,"family":"Hutton","given":"L.K.","email":"","affiliations":[],"preferred":false,"id":372437,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016096,"text":"70016096 - 1990 - Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data","interactions":[],"lastModifiedDate":"2023-10-26T11:06:51.429084","indexId":"70016096","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data","docAbstract":"To investigate near-surface site effects in granite rock, we drilled 300-m-deep boreholes at two sites which are collocated with stations from the digital array at Anza, California. The first borehole was sited at station KNW (Keenwild fire station), which is located along a ridge line about 8.7 km east of the San Jacinto Fault zone. Station PFO (Piñon Flat Observatory), chosen for the second site, is another 6 km further to the east of station KNW and is located on a gently sloping hillside. We logged each borehole for P- and S-wave velocities, as well as for crack density and orientation.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0800040807","usgsCitation":"Fletcher, J.B., Fumal, T., Liu, H., and Carroll, L., 1990, Near-surface velocities and attenuation at two boreholes near Anza, California, from logging data: Bulletin of the Seismological Society of America, v. 80, no. 4, p. 807-831, https://doi.org/10.1785/BSSA0800040807.","productDescription":"25 p.","startPage":"807","endPage":"831","numberOfPages":"25","costCenters":[],"links":[{"id":222991,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.82306309081514,\n 33.64775282269589\n ],\n [\n -116.82306309081514,\n 33.47954708489645\n ],\n [\n -116.54979434156269,\n 33.47954708489645\n ],\n [\n -116.54979434156269,\n 33.64775282269589\n ],\n [\n -116.82306309081514,\n 33.64775282269589\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"80","issue":"4","noUsgsAuthors":false,"publicationDate":"1990-08-01","publicationStatus":"PW","scienceBaseUri":"505a640be4b0c8380cd72843","contributors":{"authors":[{"text":"Fletcher, Joe B.","contributorId":8850,"corporation":false,"usgs":true,"family":"Fletcher","given":"Joe","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":372538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fumal, T.","contributorId":46692,"corporation":false,"usgs":true,"family":"Fumal","given":"T.","affiliations":[],"preferred":false,"id":372540,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, Hsi-Ping","contributorId":59944,"corporation":false,"usgs":true,"family":"Liu","given":"Hsi-Ping","affiliations":[],"preferred":false,"id":372541,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carroll, L.C.","contributorId":28373,"corporation":false,"usgs":true,"family":"Carroll","given":"L.C.","email":"","affiliations":[],"preferred":false,"id":372539,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70015994,"text":"70015994 - 1990 - Volcanism in the Sumisu Rift, I. Major element, volatile, and stable isotope geochemistry","interactions":[],"lastModifiedDate":"2023-12-09T15:16:18.377433","indexId":"70015994","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Volcanism in the Sumisu Rift, I. Major element, volatile, and stable isotope geochemistry","docAbstract":"A bimodal volcanic suite with K![\"single](\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\")
Ar ages of 0.05–1.40 Ma was collected from the Sumisu Rift using alvin. These rocks are contemporaneous with island arc tholeiite lavas of the Izu-Ogasawara arc 20 km to the east, and provide a present day example of volcanism associated with arc rifting and back-arc basin initiation. Major element geochemistry of the basalts is most similar to that of basalts found in other, more mature back-arc basins, which indicates that back-arc basins need not begin their magmatic evolution with lavas bearing strong arc signatures.
Volatile concentrations distinguish Sumisu Rift basalts from island arc basalts and MORB. H2O contents, which are at least four times greater than in MORB, suppress plagioclase crystallization. This suppression results in a more mafic fractionating assemblage, which prevents Al2O3 depletion and delays the initiation of Fe2O3(tot) and TiO2 enrichment. However, unlike arc basalts,Fe3+/ΣFe ratios are only slightly higher than in MORB and are insufficient to cause magnetite saturation early enough to suppress Fe2O3(tot) and TiO2 enrichment. Thus, major element trends are more similar to those of MORB than arcs.
H2O, CO2 and S are undersaturated relative to pure phase solubility curves, indicating exsolution of an H2O-rich mixed gas phase. HighH2O/S, highδD, and low (MORB-like)δ34S ratios are considered primary and distinctive of the back-arc basin setting.
","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(90)90184-Y","issn":"0012821X","usgsCitation":"Hochstaedter, A., Gill, J., Kusakabe, M., Newman, S., Pringle, M., Taylor, B., and Fryer, P., 1990, Volcanism in the Sumisu Rift, I. Major element, volatile, and stable isotope geochemistry: Earth and Planetary Science Letters, v. 100, no. 1-3, p. 179-194, https://doi.org/10.1016/0012-821X(90)90184-Y.","productDescription":"16 p.","startPage":"179","endPage":"194","numberOfPages":"16","costCenters":[],"links":[{"id":223037,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"100","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc320e4b08c986b32af8a","contributors":{"authors":[{"text":"Hochstaedter, A.G.","contributorId":46693,"corporation":false,"usgs":true,"family":"Hochstaedter","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":372295,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gill, J.B.","contributorId":61171,"corporation":false,"usgs":true,"family":"Gill","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":372296,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kusakabe, M.","contributorId":94437,"corporation":false,"usgs":true,"family":"Kusakabe","given":"M.","email":"","affiliations":[],"preferred":false,"id":372299,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Newman, S.","contributorId":7678,"corporation":false,"usgs":true,"family":"Newman","given":"S.","affiliations":[],"preferred":false,"id":372293,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pringle, M.","contributorId":87694,"corporation":false,"usgs":true,"family":"Pringle","given":"M.","affiliations":[],"preferred":false,"id":372298,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Taylor, B.","contributorId":36683,"corporation":false,"usgs":true,"family":"Taylor","given":"B.","email":"","affiliations":[],"preferred":false,"id":372294,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fryer, P.","contributorId":65995,"corporation":false,"usgs":true,"family":"Fryer","given":"P.","email":"","affiliations":[],"preferred":false,"id":372297,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70162574,"text":"70162574 - 1990 - Historical activity at Campi Flegrei caldera, southern Italy","interactions":[],"lastModifiedDate":"2016-02-09T16:17:11","indexId":"70162574","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1437,"text":"Earthquakes & Volcanoes (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Historical activity at Campi Flegrei caldera, southern Italy","docAbstract":"According to the biography of the 6th century Italian lawyer Antonion Castaldo, the swarm of earthquakes that had bothered the inhabitants of Pozzuoli and Naples all summer long ended abruptly on the eve of St. Michael (September 29) in the year 1538. Castaldo recalled that the end of this swarm was heralded by a very large earthquake followed immediately by loud thunder, sounding like bombardment from heavy guns. This was the beginning of a week-long eruption in Campi Flegrei, a volcanic caldera located along the west coast of southern Italy near Naples.
\nThis event has been the only eruption of Campi Flegrei in almost 4,000 years. It was preceded by a few decades of sporadic earthquakes swarms and noticeable uplift of the shoreline and was followed by 430 years of quiescence. Signs of renewed activity was first recognized in late 1969. Since then, the caldera center rose as much as 3 meters, and several hundred earthquakes were felt from 1983 to 1984 by people living in Campi Flegrei. These earthquakes extensively damaged buildings in Pozzuoli, located in the center of Campi Flegrei, and prompted the evacuation of 40,000 people. The uplift and the earthquakes stopped in December 1984, and no significant activity has occurred since.
\nWe cannot forecast whether the activity since 968 will culminate in another eruption or whether Campi Flegrei will remain quiet for several hundred more years. This article summarizes the historical recorded of activity in Campi Flegrei, which, with varying degrees of reliability, spans 2,000 years, and emphasizes that further scientific studies of this caldera will improve our understanding of the behavior of longquiescent volcanic system.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Dvorak, J., and Gasparini, P., 1990, Historical activity at Campi Flegrei caldera, southern Italy: Earthquakes & Volcanoes (USGS), v. 22, no. 6, p. 255-267.","productDescription":"13 p.","startPage":"255","endPage":"267","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314902,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Italy","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 14.037780761718748,\n 40.90832339902113\n ],\n [\n 14.294586181640625,\n 40.95501133048621\n ],\n [\n 14.567871093749998,\n 40.79613778833376\n ],\n [\n 14.35089111328125,\n 40.62854560636587\n ],\n [\n 14.061126708984373,\n 40.75557964275591\n ],\n [\n 13.985595703125,\n 40.85744791303121\n ],\n [\n 14.037780761718748,\n 40.90832339902113\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"22","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56a8a6c5e4b0b28f1184dbf9","contributors":{"authors":[{"text":"Dvorak, J.","contributorId":94042,"corporation":false,"usgs":true,"family":"Dvorak","given":"J.","email":"","affiliations":[],"preferred":false,"id":589865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gasparini, P.","contributorId":35881,"corporation":false,"usgs":true,"family":"Gasparini","given":"P.","email":"","affiliations":[],"preferred":false,"id":589866,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016099,"text":"70016099 - 1990 - Application of a hollow-fiber, tangential-flow device for sampling suspended bacteria and particles from natural waters","interactions":[],"lastModifiedDate":"2019-10-04T14:56:41","indexId":"70016099","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Application of a hollow-fiber, tangential-flow device for sampling suspended bacteria and particles from natural waters","docAbstract":"The design and application of a hollow-fiber tangential-flow filtration device has been used to concentrate bacteria and suspended particles from large volume surface water and groundwater samples (i.e., hundreds of liters). Filtrate tlux rates (4–8 L min−1) are equal to or faster than those of other devices that are based on continuous flow centrifugation and plate and frame filtration. Particle recovery efficiencies for inorganic particles (approximately 90%) were similar to other dewatering devices, but microbial cell recoveries (30–90%) were greatly improved by this technique relative to other currently available methods. Although requirements for operation and maintenance of the device are minimal, its size, as with other dewatering devices, limits its applicability at remote sample sites. Nevertheless, it has proven useful for sample collection in studies involving microbial transport and analysis of particle-associated trace inorganic solutes.
","language":"English","publisher":"American Society of Agronomy, Crop Science Society of America, Soil Science Society of America","publisherLocation":"Madison, WI","doi":"10.2134/jeq1990.00472425001900030045x","usgsCitation":"Kuwabara, J., and Harvey, R., 1990, Application of a hollow-fiber, tangential-flow device for sampling suspended bacteria and particles from natural waters: Journal of Environmental Quality, v. 19, no. 3, p. 625-629, https://doi.org/10.2134/jeq1990.00472425001900030045x.","productDescription":"5 p.","startPage":"625","endPage":"629","numberOfPages":"5","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":306586,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec8de4b0c8380cd49334","contributors":{"authors":[{"text":"Kuwabara, J.S.","contributorId":57905,"corporation":false,"usgs":true,"family":"Kuwabara","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":372549,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, R.W. 0000-0002-2791-8503","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":11757,"corporation":false,"usgs":true,"family":"Harvey","given":"R.W.","affiliations":[],"preferred":false,"id":372548,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016057,"text":"70016057 - 1990 - Construction and performance of a long-term earthen liner experiment","interactions":[],"lastModifiedDate":"2012-03-12T17:18:40","indexId":"70016057","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Construction and performance of a long-term earthen liner experiment","docAbstract":"In land burial schemes, compacted soil barriers with low hydraulic conductivity are commonly used in cover and liner systems to control the movement of liquids and prevent groundwater contamination. An experimental liner measuring 8 x 15 x 0.9 m was constructed with design criteria and equipment to simulate construction of soil liners built at waste disposal facilities. The surface of the liner was flooded with a 29.5 cm deep pond on April 12, 1988. Infiltration of water into the liner has been monitored for two years using 4 large-ring (1.5 m OD) and 32 small-ring (0.28 m OD) infiltrometers, and a water-balance that accounts for total infiltration and evaporation. Average long-term infiltration fluxes based on two years of monitoring are 5.8 x 10-9 cm/s, 6.0 x 10-8 cm/s and 5.6 x 10-8 for the large-ring, small-ring, and water-balance data, respectively. The saturated hydraulic conductivity of the liner based on small-ring data, estimated using Darcy's Law and the Green-Ampt Approximation, is 3 x 10-8 and 4 x 10-8 cm/s, respectively. All sets of data indicate that the liner's performance exceed that which is required by the U.S. EPA.","largerWorkTitle":"Geotechnical Special Publication","conferenceTitle":"Proceedings of a Symposium on Waste Containment Systems: Construction, Regulation, and Performance","conferenceDate":"6 November 1990 through 7 November 1990","conferenceLocation":"San Francisco, CA, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","issn":"08950563","usgsCitation":"Cartwright, K., and Krapac, I.G., 1990, Construction and performance of a long-term earthen liner experiment, in Geotechnical Special Publication, no. 26, San Francisco, CA, USA, 6 November 1990 through 7 November 1990, p. 135-155.","startPage":"135","endPage":"155","numberOfPages":"21","costCenters":[],"links":[{"id":223246,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"26","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa15e4b0c8380cd4d91c","contributors":{"editors":[{"text":"Bonaparte, Rudolph","contributorId":111565,"corporation":false,"usgs":true,"family":"Bonaparte","given":"Rudolph","email":"","affiliations":[],"preferred":false,"id":508541,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Cartwright, Keros","contributorId":43917,"corporation":false,"usgs":true,"family":"Cartwright","given":"Keros","email":"","affiliations":[],"preferred":false,"id":372442,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krapac, Ivan G.","contributorId":79627,"corporation":false,"usgs":true,"family":"Krapac","given":"Ivan","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":372443,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70015900,"text":"70015900 - 1990 - Coal in sub-Saharan-African countries undergoing desertification","interactions":[],"lastModifiedDate":"2024-02-27T01:20:51.223904","indexId":"70015900","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2147,"text":"Journal of African Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Coal in sub-Saharan-African countries undergoing desertification","docAbstract":"Coal has been reported in 11 of the 16 sub-Saharan countries discussed in this appraisal: Mauritania, Senegal, Mali, Niger, Benin, Nigeria, Cameroon, Central African Republic, Sudan, Ethiopia, and Somalia. No coal occurrences have been reported in Gambia, Togo, Burkina, Chad, and Djibouti but coal may be present within these countries because neighboring countries do contain coal-bearing rocks. Most of these countries are undergoing desertification or will in the near future.
Wood, directly or in the form of charcoal, constitutes two-thirds of the fuel used in Africa. Destruction of forest and shrub lands for fuel is occurring at an increasing rate because of desertification and increasing energy demands. The decline in biological productivity, coupled with concentration of population in areas where water is available and crops may be grown, leads to increasing shortages of wood for fuel. Part of the present and future energy needs of the sub-Saharan region could be met by use of indigenous coal and peat.
Nine sedimentary basins, completely or partially within the sub-Saharan region, have the potential of either coal and/or peat deposits of economic value: 1- Senegal Basin, 2- Taoudeni Basin and Gao Trough, 3- Niger Basin, 4- Chad Basin, 5- Chari Basin, 6- Benue Trough (Depression), 7- Sudan Trough, 8- Plateau and Rift Belt, and 9- Somali Basin. Niger and Nigeria are the only countries in sub-Saharan Africa in which coal is presently being mined as a fuel source for powerplants and domestic use.
Peat occurs in the deltas, lower river, and interdunal basin areas of Senegal, Mauritania, and Sudan. Peat can be used as an alternate fuel source and is currently being tested as a soil amendment in the agricultural sector.
","language":"English","publisher":"Elsevier","doi":"10.1016/0899-5362(90)90004-X","issn":"08995362","usgsCitation":"Weaver, J.N., Brownfield, M.E., and Bergin, M.J., 1990, Coal in sub-Saharan-African countries undergoing desertification: Journal of African Earth Sciences, v. 11, no. 3-4, p. 261-271, https://doi.org/10.1016/0899-5362(90)90004-X.","productDescription":"11 p.","startPage":"261","endPage":"271","numberOfPages":"11","costCenters":[],"links":[{"id":223080,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f691e4b0c8380cd4c811","contributors":{"authors":[{"text":"Weaver, J. N. 0000-0001-7068-5445 jcweaver@usgs.gov","orcid":"https://orcid.org/0000-0001-7068-5445","contributorId":9645,"corporation":false,"usgs":true,"family":"Weaver","given":"J.","email":"jcweaver@usgs.gov","middleInitial":"N.","affiliations":[],"preferred":false,"id":372035,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brownfield, Michael E. 0000-0003-3633-1138","orcid":"https://orcid.org/0000-0003-3633-1138","contributorId":7250,"corporation":false,"usgs":true,"family":"Brownfield","given":"Michael","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":372034,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergin, M. J.","contributorId":77144,"corporation":false,"usgs":true,"family":"Bergin","given":"M.","middleInitial":"J.","affiliations":[],"preferred":false,"id":372036,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70015901,"text":"70015901 - 1990 - Particle velocity interpolation in block-centered finite difference groundwater flow models","interactions":[],"lastModifiedDate":"2018-02-27T11:30:42","indexId":"70015901","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Particle velocity interpolation in block-centered finite difference groundwater flow models","docAbstract":"A block-centered, finite difference model of two-dimensional groundwater flow yields velocity values at the midpoints of interfaces between adjacent blocks. Method of characteristics, random walk and particle-tracking models of solute transport require velocities at arbitrary particle locations within the finite difference grid. Particle path lines and travel times are sensitive to the spatial interpolation scheme employed, particularly in heterogeneous aquifers. This paper briefly reviews linear and bilinear interpolation of velocity and introduces a new interpolation scheme. Linear interpolation of velocity is consistent with the numerical solution of the flow equation and preserves discontinuities in velocity caused by abrupt (blocky) changes in transmissivity or hydraulic conductivity. However, linear interpolation yields discontinuous and somewhat unrealistic velocities in homogeneous aquifers. Bilinear interpolation of velocity yields continuous and realistic velocities in homogeneous and smoothly heterogeneous aquifers but does not preserve discontinuities in velocity at abrupt transmissivity boundaries. The new scheme uses potentiometric head gradients and offers improved accuracy for nonuniform flow in heterogeneous aquifers with abrupt changes in transmissivity. The new scheme is equivalent to bilinear interpolation in homogeneous media and is equivalent to linear interpolation where gradients are uniform. Selecting the best interpolation scheme depends, in part, on the conceptualization of aquifer heterogeneity, that is, whether changes in transmissivity occur abruptly or smoothly.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR026i005p00925","usgsCitation":"Goode, D., 1990, Particle velocity interpolation in block-centered finite difference groundwater flow models: Water Resources Research, v. 26, no. 5, p. 925-940, https://doi.org/10.1029/WR026i005p00925.","productDescription":"16 p.","startPage":"925","endPage":"940","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":223081,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"5","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a752ce4b0c8380cd77a18","contributors":{"authors":[{"text":"Goode, Daniel J. 0000-0002-8527-2456 djgoode@usgs.gov","orcid":"https://orcid.org/0000-0002-8527-2456","contributorId":2433,"corporation":false,"usgs":true,"family":"Goode","given":"Daniel J.","email":"djgoode@usgs.gov","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":false,"id":372037,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70015728,"text":"70015728 - 1990 - Reconnaissance techniques for determining soil-gas radon concentrations: an example from Prince Georges County, Maryland","interactions":[],"lastModifiedDate":"2024-02-13T12:21:50.479447","indexId":"70015728","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Reconnaissance techniques for determining soil-gas radon concentrations: an example from Prince Georges County, Maryland","docAbstract":"Preliminary field measurements of soil-gas radon (Rn) concentrations can provide an initial assessment of the Rn potential in any location and aid in designing a larger or more detailed sampling program. Radon reconnaissance requires some special considerations because a large area must be covered in a short period of time and analyses must be made soon after collection because of Rn decay. A simple approach to collection and field analysis consists of a small-diameter probe pounded into the ground to a depth of at least 0.75 m. Analysis is by an alpha-scintillometer. Soil-gas samples collected along a traverse in Prince Georges County, Maryland, demonstrate the utility of the technique. Although this region in the Coastal Plain province might be considered to possess the type of geologic setting that would not contribute to significant Rn potential, the reconnaissance sampling revealed Rn soil-gas concentrations of up to 2500 pCi/L (picocuries per liter) indicating that the potential exists for indoor accumulations in excess of 4 pCi/L.
Seven analyses from two samples of the Lower Banded series of the Stillwater Complex, Montana, yielded a U-Pb zircon-baddeleyite age of 2705 ±4 Ma. A more precise age of 2704 ±1 Ma is obtained if we regress only five of seven analyses. In either case, the age is in very good agreement with the previously reported Sm-Nd mineral isochron age of 2701 ±8 Ma for a gabbro from the Lower Banded series.
Noncumulate mafic sills and dikes that immediately underlie the Stillwater Complex are separated into five compositional groups. U-Pb zircon ages for a group 1 gabbronorite (2711 ±1 Ma) and a group 3 mafic norite (2703 ±10 Ma) are comparable to previously reported U-Pb zircon ages for a group 1 diabase (2713 ±3 Ma) and a group 4 high-Ti norite (2712 ±3 Ma). Although group 2 high-Mg gabbronorite and group 6 olivine gabbro have not yet yielded significant amounts of zircon, baddeleyite, or sphene, mineral separates from group 2 ielded a four-point Pb-Pb internal isochron age of 2704 ±25 Ma, and separates from group 6 yielded a Sm-Nd internal isochron age of 2706 ±64 Ma, indicating that these groups are at least contemporaneous with intrusion of the Stillwater Complex.
These results indicate that groups 1 and 4 of the associated sills and dikes are perhaps slightly older than the complex and that groups 2, 3, and 6 may be coeval with it, supporting the idea that these three groups are the best candidates for a Stillwater parent magma, a conclusion previously presented on the basis of detailed mineralogic and geochemical evidence.
Fluids extracted from aqueous fluid inclusions in epigenetic gangue and ore minerals record the migration of huge volumes of highly saline fluids throughout the stratigraphic section of the Ozark region. The extracted fluids share many similarities regionally, but there are significant temporal differences which define two geochemically distinct end-member ore-forming fluids that we refer to as the Viburnum Trend main stage or Viburnum Trend type and the Tri-State type.Viburnum Trend-type fluids are enriched in potassium and are associated only with deposits close to the basal Lamotte Sandstone. The main-stage octahedral galena ore of the Viburnum Trend and much of the Old Lead Belt ore is thought to be derived from this type of ore fluid. Galena deposited by Viburnum Trend-type fluids contains less radiogenic lead than galena deposited by Tri-State-type fluids. Sulfides deposited by Viburnum Trend-type fluids also contain isotopically heavier sulfur and significant amounts of copper, cobalt, nickel, and silver.Tri-State-type fluids have a low potassium content when compared with Viburnum Trend-type fluids and are characteristic of deposits where ore-forming fluids migrated through large volumes of carbonate rock. These fluids are thought to have formed the ore deposits of the Tri-State, Northern Arkansas, and Central Missouri districts, the cubic galena-stage ore of the Viburnum Trend, and the many trace occurrences of sphalerite throughout the Ozark region. Galena deposited by Tri-State-type fluids has more radiogenic lead and the sulfides have isotopically lighter sulfur than sulfides deposited by Viburnum Trend-type fluids. A systematic south to north increase of potassium in the Tri-State-type fluids suggests that they migrated from a southerly source such as the Arkoma basin.Possible explanations for the origins of these two end-member fluids include: (1) a single parent brine evolved into two distinct fluids due to reactions with geochemically distinct aquifers during migration, (2) the two distinct fluids reflect normal fluid evolution within a single source basin of a bittern and of later halite dissolution, and (3) the Viburnum Trend and Tri-State-type brines migrated to southeast Missouri from two different source basins. Our data does not preclude any of these possibilities; however, the geochemical similarity of the Viburnum Trend end-member fluid to a bittern may be accounted for by water-rock modifications of the brine during migration. Other evidence strongly supports a southerly source for the ore-forming brines thus limiting possible sources for the Viburnum Trend-type fluid to the Arkoma and/or Black Warrior basins of the Ouachita foreland trough. Viburnum Trend-type fluid flow was probably funneled northward through basal sandstones within the Reelfoot rift and water-rock modifications occurring there may have resulted in its unique geochemistry.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.85.4.842","issn":"03610128","usgsCitation":"Viets, J., and Leach, D.L., 1990, Genetic implications of regional and temporal trends in ore fluid geochemistry of Mississippi Valley-type deposits in the Ozark region: Economic Geology, v. 85, no. 4, p. 842-861, https://doi.org/10.2113/gsecongeo.85.4.842.","productDescription":"20 p.","startPage":"842","endPage":"861","numberOfPages":"20","costCenters":[],"links":[{"id":223839,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"85","issue":"4","noUsgsAuthors":false,"publicationDate":"1990-07-01","publicationStatus":"PW","scienceBaseUri":"505a157ae4b0c8380cd54e29","contributors":{"authors":[{"text":"Viets, J.G.","contributorId":82300,"corporation":false,"usgs":true,"family":"Viets","given":"J.G.","affiliations":[],"preferred":false,"id":371639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Leach, D. L.","contributorId":18758,"corporation":false,"usgs":true,"family":"Leach","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":371638,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70015733,"text":"70015733 - 1990 - Geochemistry of vanadium in an epigenetic, sandstone-hosted vanadium-uranium deposit, Henry Basin, Utah","interactions":[],"lastModifiedDate":"2024-01-04T17:34:18.116728","indexId":"70015733","displayToPublicDate":"1990-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of vanadium in an epigenetic, sandstone-hosted vanadium-uranium deposit, Henry Basin, Utah","docAbstract":"The epigenetic Tony M vanadium-uranium orebody in south-central Utah is hosted in fluvial sandstones of the Morrison Formation (Upper Jurassic). Although the deposit is mined for uranium, vanadium has a higher average abundance in the ore. Thus, the geochemistry of vanadium in the orebody was studied to characterize ore-forming processes within the inferred ground-water flow regime. Measurements of the relative amounts of V (super +3) and V (super +4) in ore minerals show that V (super +3) is more abundant. Thermodynamic calculations show that vanadium was more likely transported to the site of mineralization as V (super +4) . The ore formed as V (super +4) was reduced by hydrogen sulfide, followed by hydrolysis and precipitation of V (super +3) in oxide minerals (e.g., montroseitc or paramontroseite) or chlorite. Uranium was transported as uranyl ion (U (super +6) ), or some complex thereof, and reduced by hydrogen sulfide, forming coffinite. Detrital organic matter in the rocks served as the carbon source for sulfate-reducing bacteria. It was this bacteriogenic H 2 S that reduced the metals in the mineralization process.Possible sources for the V and U in this deposit have been identified previously. Vanadium most likely was derived from the dissolution of iron-titanium oxides, which liberated Fe as well as V. A zone of titanium-rich remnants is observed updip and up the hydrologic gradient from the deposit (M. Goldhaber and R. L. Reynolds, unpub. data). Uranium probably was derived from the overlying Brushy Basin Member of the Morrison Formation (Northrop, 1982). A preliminary age date for the deposit of 115 Ma (K. Ludwig, 1986, pers. commun.) indicates that the ore formed after deposition of the Brushy Basin Member.Previous studies have shown that the ore formed at the density-stratified interface between a basinal brine and dilute meteoric water. The mineralization processes described above occurred within the mixing zone between these two fluids. Stable isotope analyses of ore-stage dolomite show a progressively heavier carbon and oxygen isotope signature with increasing depth through an ore horizon, consistent with the two-solution interface model.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.85.2.270","issn":"03610128","usgsCitation":"Wanty, R., Goldhaber, M., and Northrop, H.R., 1990, Geochemistry of vanadium in an epigenetic, sandstone-hosted vanadium-uranium deposit, Henry Basin, Utah: Economic Geology, v. 85, no. 2, p. 270-284, https://doi.org/10.2113/gsecongeo.85.2.270.","productDescription":"15 p.","startPage":"270","endPage":"284","numberOfPages":"15","costCenters":[],"links":[{"id":488924,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/11124/78303","text":"External Repository"},{"id":223840,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"85","issue":"2","noUsgsAuthors":false,"publicationDate":"1990-04-01","publicationStatus":"PW","scienceBaseUri":"505a1727e4b0c8380cd553d7","contributors":{"authors":[{"text":"Wanty, R. B. 0000-0002-2063-6423","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":66704,"corporation":false,"usgs":true,"family":"Wanty","given":"R. B.","affiliations":[],"preferred":false,"id":371641,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goldhaber, M. B. 0000-0002-1785-4243","orcid":"https://orcid.org/0000-0002-1785-4243","contributorId":103280,"corporation":false,"usgs":true,"family":"Goldhaber","given":"M. B.","affiliations":[],"preferred":false,"id":371642,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Northrop, H. R.","contributorId":40735,"corporation":false,"usgs":true,"family":"Northrop","given":"H.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":371640,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}