The geologic framework of the surficial aquifer system in Dade County, Florida, was investigated as part of a longterm study by the USGS in cooperation with the South Florida Water Management District, to describe the geology, hydrologic characteristics, and groundwater quality of the surficial aquifer system. Thirty-three test wells were drilled completely through the surficial aquifer system and into the underlying, relatively impermeable units of the Tamiami and Hawthorn Formations. Detailed lithologic logs were made from microscopic examination of rock cuttings and cores obtained from these wells. The logs were used to prepare geologic sections that show the lithologic variations, thickness of the lithologic units, and different geologic formations that comprise the aquifers system.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri864126","usgsCitation":"Causaras, C., 1986, Geology of the surficial aquifer system, Dade County, Florida: Lithologic logs: U.S. Geological Survey Water-Resources Investigations Report 86-4126, Report: 240 p.; 3 Plates: 41.81 x 34.84 inches or smaller, https://doi.org/10.3133/wri864126.","productDescription":"Report: 240 p.; 3 Plates: 41.81 x 34.84 inches or smaller","costCenters":[],"links":[{"id":415587,"rank":6,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36566.htm","linkFileType":{"id":5,"text":"html"}},{"id":55406,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1986/4126/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":55405,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1986/4126/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":55404,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1986/4126/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":55403,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1986/4126/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":121933,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1986/4126/report-thumb.jpg"}],"country":"United States","state":"Florida","county":"Dade County","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -80.87,\n 25.922\n ],\n [\n -80.87,\n 25.25\n ],\n [\n -80.1338,\n 25.25\n ],\n [\n -80.138,\n 25.922\n ],\n [\n -80.87,\n 25.922\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c769","contributors":{"authors":[{"text":"Causaras, C. R.","contributorId":66679,"corporation":false,"usgs":true,"family":"Causaras","given":"C. R.","affiliations":[],"preferred":false,"id":196575,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70030322,"text":"70030322 - 1986 - Guidelines to classification and nomenclature of Arabian felsic plutonic rocks","interactions":[],"lastModifiedDate":"2024-02-27T01:32:04.116731","indexId":"70030322","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Guidelines to classification and nomenclature of Arabian felsic plutonic rocks","docAbstract":"Well-defined procedures for classifying the felsic plutonic rocks of the Arabian Shield on the basis of petrographic, chemical and lithostratigraphic criteria and mineral-resource potential have been adopted and developed in the Saudi Arabian Deputy Ministry for Mineral Resources over the past decade. A number of problems with conventional classification schemes have been identified and resolved; others, notably those arising from difficulties in identifying precise mineral compositions, continue to present difficulties.
The petrographic nomenclature used is essentially that recommended by the International Union of Geological Sciences. Problems that have arisen include the definition of: (1) rocks with sodic, zoned or perthitic feldspar, (2) trondhjemites, and (3) alkali granites. Chemical classification has been largely based on relative molar amounts of alumina, lime and alkalis, and the use of conventional variation diagrams, but pilot studies utilizing univariate and multivariate statistical techniques have been made. The classification used in Saudi Arabia for stratigraphic purposes is a hierarchy of formation-rank units, suites and super-suites as defined in the Saudi Arabian stratigraphic code. For genetic and petrological studies, a grouping as ‘associations’ of similar and genetically related lithologies is commonly used. In order to indicate mineral-resource potential, the felsic plutons are classed as common, precursor, specialized or mineralized, in order of increasing exploration significance.
A significant Sn deposit at Jabal Silsilah (26°07′N, 42°41′E), a prominent ring complex in the NE Arabian Shield, is associated with greisen in flat-topped cupolas of a highly evolved, zinnwaldite- and topaz-bearing alkali-feldspar granite. This granite is peraluminous, enriched in incompatible trace elements and characterized by a chondrite-normalized REE profile showing a large negative Eu anomaly, but otherwise flat. It is overlain by a carapace of aplite and pegmatite, beneath which accumulated residual fluids caused greisenization and deposition of disseminated cassiterite. Quartz—wolframite veins cut both granite and carapace.
The other components of the Silsilah complex, from oldest to youngest, are: alkaline dacite, peralkaline granite and hypabyssal rocks. Their occurrence in a single ring structure and geochemical affinities indicate that they comprise a differentiation series. Fractionation of sodic plagioclase, apatite and Fe and Ti oxides resulted in parental alkaline dacite magma becoming peralkaline and granitic. Subsequent fractionation of alkali feldspar, soda pyribole and zircon resulted in a peraluminous melt enriched in incompatible trace elements.
The results of three base-flow studies conducted on Otter and Rosebud Creeks during 1977, 1978, and 1983 are summarized and compared to assess the variability of base-flow magnitude and water quality during years of widely different precipitation. Chemical analyses for springs in these basins also are presented to provide and indication of the areal and temporal variability of groundwater quality. Base-flow magnitudes in Otter and Rosebud Creeks vary considerably in response to precipitation of the previous year. Maximum observed differences in base-flow magnitudes between the study years were 3.8 cu ft/sec in Otter Creek and 53 cu ft/sec in Rosebud Creek. Predominant ions of base streamflow are sodium, magnesium, and sulfate in Otter Creek and magnesium, calcium, sodium, sulfate, and bicarbonate in Rosebud Creek. Dissolved solids concentrations varied considerably, with maximum differences between study years of about 1,200 mg/L in Otter Creek and about 3,200 mg/L in Rosebud Creek. The ionic composition of springs in the Otter and Rosebud Creek basins is generally similar to that of the streams. Dissolved solids concentrations of the springs vary largely throughout each basin; however, there was little variability between sampling years at individual springs.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri854302","usgsCitation":"Lambing, J., and Ferreira, R.F., 1986, Variability in base streamflow and water quality of streams and springs in Otter and Rosebud Creek basins, southeastern Montana: U.S. Geological Survey Water-Resources Investigations Report 85-4302, iv, 49 p., https://doi.org/10.3133/wri854302.","productDescription":"iv, 49 p.","costCenters":[],"links":[{"id":57048,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1985/4302/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":159647,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1985/4302/report-thumb.jpg"},{"id":415947,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36438.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Montana","otherGeospatial":"Otter and Rosebud Creek basins","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -107.167,\n 46.292\n ],\n [\n -107.167,\n 45\n ],\n [\n -106,\n 45\n ],\n [\n -106,\n 46.292\n ],\n [\n -107.167,\n 46.292\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db602bff","contributors":{"authors":[{"text":"Lambing, J. H.","contributorId":100860,"corporation":false,"usgs":true,"family":"Lambing","given":"J. H.","affiliations":[],"preferred":false,"id":199408,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ferreira, R. F.","contributorId":80690,"corporation":false,"usgs":true,"family":"Ferreira","given":"R.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":199407,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70168810,"text":"70168810 - 1986 - Living with the earthquake risk","interactions":[],"lastModifiedDate":"2016-03-03T15:20:05","indexId":"70168810","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Living with the earthquake risk","docAbstract":"The principal hazards from earthquakes are surface faulting, ground failure, and ground shaking. In coastal areas tsunamis, or seismic sea waves, also are a potential hazard. We will consider each of these hazards briefly to assess their possible effects on the structures of man.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Rogers, A.M., 1986, Living with the earthquake risk: Earthquakes & Volcanoes (USGS), v. 18, no. 3, p. 113-121.","productDescription":"9 p.","startPage":"113","endPage":"121","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318541,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56d96e56e4b015c306f7649c","contributors":{"authors":[{"text":"Rogers, A. M.","contributorId":92251,"corporation":false,"usgs":true,"family":"Rogers","given":"A.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":621840,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70195831,"text":"70195831 - 1986 - A hybrid microcomputer system for geological investigations","interactions":[],"lastModifiedDate":"2018-03-05T15:44:07","indexId":"70195831","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5643,"text":"Computers and Geology","printIssn":"0271-0420","active":true,"publicationSubtype":{"id":10}},"title":"A hybrid microcomputer system for geological investigations","docAbstract":"No abstract available.
","language":"English","publisher":"Elsevier","usgsCitation":"Botbol, J., Evenden, G., Hanley, J., and Merriam, D.F., 1986, A hybrid microcomputer system for geological investigations: Computers and Geology, v. 5, p. 105-112.","productDescription":"8 p.","startPage":"105","endPage":"112","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":352222,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff3835e4b0da30c1bfd9bb","contributors":{"authors":[{"text":"Botbol, J.M.","contributorId":46944,"corporation":false,"usgs":true,"family":"Botbol","given":"J.M.","affiliations":[],"preferred":false,"id":730205,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Evenden, G. I.","contributorId":52960,"corporation":false,"usgs":true,"family":"Evenden","given":"G. I.","affiliations":[],"preferred":false,"id":730206,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hanley, J.","contributorId":85586,"corporation":false,"usgs":false,"family":"Hanley","given":"J.","affiliations":[],"preferred":false,"id":730207,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Merriam, D. F.","contributorId":63175,"corporation":false,"usgs":true,"family":"Merriam","given":"D.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":730208,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":44429,"text":"wri864149 - 1986 - Louisiana hydrologic atlas map no. 1: Mean annual runoff in Louisiana","interactions":[],"lastModifiedDate":"2023-04-17T19:06:49.566693","indexId":"wri864149","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"86-4149","title":"Louisiana hydrologic atlas map no. 1: Mean annual runoff in Louisiana","docAbstract":"The map shows the mean annual runoff from drainage basins in Louisiana exclusive of those in the coastal zone and the alluvial valleys of the Mississippi, Ouachita, and Red Rivers. The mean annual runoff for the State of Louisiana varies from 0.7 (cu ft/s)/sq mi in the Sabine and Red River basins to >2.0 (cu ft/s)/sq mi in the upper reaches of the Mermentau River. Factors that account for the three-fold variation in runoff across Louisiana include regional differences in rainfall, varying physical characteristics of the land, and differing land use patterns. The mean annual runoff was determined on the basis of continuing measurements of stage and discharge of uncontrolled streams. The periods of record from the 88 stations shown on the map vary from 5 to 25 yr. The 88 stations were grouped into seven categories of runoff. The boundaries for each region generally correspond to drainage boundaries or physiographic boundaries.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri864149","usgsCitation":"McWreath, H.C., and Lowe, A.S., 1986, Louisiana hydrologic atlas map no. 1: Mean annual runoff in Louisiana: U.S. Geological Survey Water-Resources Investigations Report 86-4149, 1 Plate: 27.00 x 24.87 inches, https://doi.org/10.3133/wri864149.","productDescription":"1 Plate: 27.00 x 24.87 inches","costCenters":[],"links":[{"id":172361,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":415859,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36576.htm","linkFileType":{"id":5,"text":"html"}},{"id":81731,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1986/4149/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Louisiana","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -94.046,\n 33.02\n ],\n [\n -94.0461,\n 30\n ],\n [\n -88.809,\n 30\n ],\n [\n -88.809,\n 33.02\n ],\n [\n -94.046,\n 33.02\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a73e4b07f02db643f04","contributors":{"authors":[{"text":"McWreath, Harry C. III","contributorId":26191,"corporation":false,"usgs":true,"family":"McWreath","given":"Harry","suffix":"III","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":229753,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lowe, Alfred S.","contributorId":74820,"corporation":false,"usgs":true,"family":"Lowe","given":"Alfred","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":229754,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70168679,"text":"70168679 - 1986 - Earthquakes, January-February 1986","interactions":[],"lastModifiedDate":"2016-02-23T16:47:46","indexId":"70168679","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Earthquakes, January-February 1986","docAbstract":"The first two months of the year were somewhat quiet seismically speaking. There were no major earthquakes (7.0-7.9) but one death was caused by an earthquake in Peru.
\nIn the United States a magntidue 4.9 earthquake in Ohio on January 31 caused some minor injuries and was felt in eleven states, the Nation's Capitol and Canada.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1986, Earthquakes, January-February 1986: Earthquakes & Volcanoes (USGS), v. 18, no. 6, p. 235-237.","productDescription":"3 p.","startPage":"235","endPage":"237","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318353,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56cd90d3e4b0b1892d9e82c4","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":621247,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70168819,"text":"70168819 - 1986 - Cooperative earthquake research between the United States and the People’s Republic of China","interactions":[],"lastModifiedDate":"2016-03-03T16:02:15","indexId":"70168819","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Cooperative earthquake research between the United States and the People’s Republic of China","docAbstract":"Cooperative research by scientists of the United States and the People's Republic of China (PRC) has resulted in important new finding concerning the fundamental characteristics of earthquakes and new insight into mitigating earthquake hazards. Much of the research is being conducted under the U.S State Department Protocol for Scientific and Technical Cooperation in Earthquake Studies between the PRC State Seismological Bureau (SSB) and the U.S Geological Survey and the National Science Foundation. Activites and prgoress accomplished under the protocol were the subject of two special sessions at the 1985 American Geophyiscal Union Fall Meeting in San Francisco, Calif.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Russ, D.P., and Johnson, L., 1986, Cooperative earthquake research between the United States and the People’s Republic of China: Earthquakes & Volcanoes (USGS), v. 18, no. 3, p. 138-140.","productDescription":"3 p.","startPage":"138","endPage":"140","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318546,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56d96e3de4b015c306f76451","contributors":{"authors":[{"text":"Russ, D. P.","contributorId":38538,"corporation":false,"usgs":true,"family":"Russ","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":621849,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, L.E.","contributorId":71858,"corporation":false,"usgs":true,"family":"Johnson","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":621850,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014666,"text":"70014666 - 1986 - Improved phase-ellipse method for in-situ geophone calibration","interactions":[],"lastModifiedDate":"2023-11-17T12:02:37.114105","indexId":"70014666","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1806,"text":"Geophysical Prospecting","active":true,"publicationSubtype":{"id":10}},"title":"Improved phase-ellipse method for in-situ geophone calibration","docAbstract":"For amplitude and phase response calibration of moving-coil electromagnetic geophones two parameters are needed, namely, the geophone natural frequency, f0, and the geophone upper resonance frequency fu. The phase-ellipse method is commonly used for the in situ determination of these parameters. For a given signal-to-noise ratio, the precision of the measurement off0 andfu depends on the phase sensitivity, f(δφ/δf) For some commercial geophones f(δφ/δf) atfu can be an order of magnitude less than the sensitivity atf0. In this paper we present an improved phase-ellipse method with increased precision. Compared to measurements made with the existing phase-ellipse methods, our method shows a 6- and 3-fold improvement in the precision, respectively, on measurements of f0 andfu on a commercial geophone.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-2478.1986.tb00480.x","usgsCitation":"Liu, H.P., and Peselnick, L., 1986, Improved phase-ellipse method for in-situ geophone calibration: Geophysical Prospecting, v. 34, no. 4, p. 537-544, https://doi.org/10.1111/j.1365-2478.1986.tb00480.x.","productDescription":"8 p.","startPage":"537","endPage":"544","numberOfPages":"8","costCenters":[],"links":[{"id":225908,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-04-27","publicationStatus":"PW","scienceBaseUri":"505a3961e4b0c8380cd618da","contributors":{"authors":[{"text":"Liu, Huaibao P.","contributorId":14581,"corporation":false,"usgs":true,"family":"Liu","given":"Huaibao","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":368949,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peselnick, L.","contributorId":66825,"corporation":false,"usgs":true,"family":"Peselnick","given":"L.","affiliations":[],"preferred":false,"id":368950,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1000554,"text":"1000554 - 1986 - Benthic community of the Savannah River below a peaking hydropower station","interactions":[],"lastModifiedDate":"2013-02-05T15:59:11","indexId":"1000554","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2542,"text":"Journal of the Elisha Mitchell Scientific Society","active":true,"publicationSubtype":{"id":10}},"title":"Benthic community of the Savannah River below a peaking hydropower station","docAbstract":"The Savannah River below Hartwell Dam, on the South Carolina-Georgia border, contains at least 206 benthic invertebrate taxa, even though this tailwater undergoes substantial daily fluctuations in water flow, temperature, and dissolved oxygen. Oligochaetes, chironomids, and amphipods dominate the community immediately below the dam. Farther downstream, larger organisms (i.e., Ephemeroptera, Trichoptera, etc.) dominate the benthic community. The high diversity of this system is primarily attributed to the intensive effort we expended to identify invertebrates to species level. We conclude that tailwaters associated with peaking hydropower stations may in fact have the diverse community assemblages found in natural streams and that this has not been recognized by other investigators because the bulk of the fauna is made up of small forms that are easily overlooked. Comparisons of tailwater fauna communities with those in control areas should be limited to rivers of similar size.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the Elisha Mitchell Scientific Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"North Carolina Academy of Science","usgsCitation":"Hudson, P.L., and Nichols, S.J., 1986, Benthic community of the Savannah River below a peaking hydropower station: Journal of the Elisha Mitchell Scientific Society, v. 102, no. 3, p. 107-121.","productDescription":"15 p.","startPage":"107","endPage":"121","numberOfPages":"15","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":133140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267059,"type":{"id":11,"text":"Document"},"url":"https://dc.lib.unc.edu/cdm/ref/collection/jncas/id/3229"}],"volume":"102","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a53e4b07f02db62b5b9","contributors":{"authors":[{"text":"Hudson, Patrick L. 0000-0002-7646-443X phudson@usgs.gov","orcid":"https://orcid.org/0000-0002-7646-443X","contributorId":5616,"corporation":false,"usgs":true,"family":"Hudson","given":"Patrick","email":"phudson@usgs.gov","middleInitial":"L.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":308755,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, S. Jerrine","contributorId":25887,"corporation":false,"usgs":true,"family":"Nichols","given":"S.","email":"","middleInitial":"Jerrine","affiliations":[],"preferred":false,"id":308756,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70180822,"text":"70180822 - 1986 - Preliminary estimates of loss of juvenile anadromous salmonids to predators in John Day Reservoir and development of a predation model","interactions":[],"lastModifiedDate":"2017-02-03T13:49:29","indexId":"70180822","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Preliminary estimates of loss of juvenile anadromous salmonids to predators in John Day Reservoir and development of a predation model","docAbstract":"No abstract available
","language":"English","publisher":"Bonneville Power Administration","publisherLocation":"Portland, OR","usgsCitation":"Reiman, B., Beamesderfer, R., Nigro, A., Vigg, S., Hansel, H., and Palmer, D., 1986, Preliminary estimates of loss of juvenile anadromous salmonids to predators in John Day Reservoir and development of a predation model, 53 p. .","productDescription":"53 p. ","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":334705,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5895a4d5e4b0fa1e59bc1ec5","contributors":{"authors":[{"text":"Reiman, B.E.","contributorId":179080,"corporation":false,"usgs":false,"family":"Reiman","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":662522,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Beamesderfer, R.C.","contributorId":178973,"corporation":false,"usgs":false,"family":"Beamesderfer","given":"R.C.","affiliations":[],"preferred":false,"id":662523,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nigro, A.A.","contributorId":73963,"corporation":false,"usgs":true,"family":"Nigro","given":"A.A.","email":"","affiliations":[],"preferred":false,"id":662524,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vigg, S.C.","contributorId":179081,"corporation":false,"usgs":false,"family":"Vigg","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":662525,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hansel, H.C.","contributorId":34624,"corporation":false,"usgs":true,"family":"Hansel","given":"H.C.","email":"","affiliations":[],"preferred":false,"id":662526,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Palmer, D.E.","contributorId":152169,"corporation":false,"usgs":false,"family":"Palmer","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":662527,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70180819,"text":"70180819 - 1986 - Growth and survival of salmon and steelhead in a controlled section of Icicle Creek","interactions":[],"lastModifiedDate":"2017-02-03T13:39:33","indexId":"70180819","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"title":"Growth and survival of salmon and steelhead in a controlled section of Icicle Creek","docAbstract":"No abstract available
","language":"English","publisher":"U. S. Fish and Wildlife Service","usgsCitation":"Mullan, J., and McIntyre, J., 1986, Growth and survival of salmon and steelhead in a controlled section of Icicle Creek.","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":334700,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5895a4d5e4b0fa1e59bc1ec9","contributors":{"authors":[{"text":"Mullan, J.W.","contributorId":179079,"corporation":false,"usgs":false,"family":"Mullan","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":662517,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McIntyre, J.D.","contributorId":27006,"corporation":false,"usgs":true,"family":"McIntyre","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":662518,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70180814,"text":"70180814 - 1986 - Feeding activity, rate of consumption, daily ration, and prey selection of major predators in John Day Reservoir - Section II, predation control measures","interactions":[],"lastModifiedDate":"2018-07-17T13:53:28","indexId":"70180814","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Feeding activity, rate of consumption, daily ration, and prey selection of major predators in John Day Reservoir - Section II, predation control measures","docAbstract":"No abstract available
","language":"English","publisher":"Bonneville Power Administration","publisherLocation":"Portland, OR","usgsCitation":"Palmer, D., Hansel, H., Beyer, J., Vigg, S., Yasutake, W.T., Lofy, P., Duke, S., Parsley, M., Mesa, M., Prendergast, L., Burkhardt, R., Burley, C., Eib, D., and Poe, T., 1986, Feeding activity, rate of consumption, daily ration, and prey selection of major predators in John Day Reservoir - Section II, predation control measures.","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":334692,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5895a4d5e4b0fa1e59bc1ecf","contributors":{"authors":[{"text":"Palmer, D.E.","contributorId":152169,"corporation":false,"usgs":false,"family":"Palmer","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":740240,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hansel, H.C.","contributorId":34624,"corporation":false,"usgs":true,"family":"Hansel","given":"H.C.","email":"","affiliations":[],"preferred":false,"id":740241,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beyer, J.M.","contributorId":152175,"corporation":false,"usgs":false,"family":"Beyer","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":740242,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vigg, S.C.","contributorId":179081,"corporation":false,"usgs":false,"family":"Vigg","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":740243,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yasutake, W. T.","contributorId":103222,"corporation":false,"usgs":true,"family":"Yasutake","given":"W.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":740244,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lofy, P.T.","contributorId":152181,"corporation":false,"usgs":false,"family":"Lofy","given":"P.T.","email":"","affiliations":[],"preferred":false,"id":662505,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Duke, S.D.","contributorId":179052,"corporation":false,"usgs":false,"family":"Duke","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":662506,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Parsley, M.J.","contributorId":59542,"corporation":false,"usgs":true,"family":"Parsley","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":662507,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Mesa, M.G.","contributorId":17386,"corporation":false,"usgs":true,"family":"Mesa","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":662508,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Prendergast, L.A.","contributorId":179029,"corporation":false,"usgs":false,"family":"Prendergast","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":662510,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Burkhardt, R.","contributorId":179072,"corporation":false,"usgs":false,"family":"Burkhardt","given":"R.","email":"","affiliations":[],"preferred":false,"id":740245,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Burley, C.","contributorId":179073,"corporation":false,"usgs":false,"family":"Burley","given":"C.","email":"","affiliations":[],"preferred":false,"id":740246,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Eib, D.W.","contributorId":152259,"corporation":false,"usgs":false,"family":"Eib","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":740247,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Poe, T.P.","contributorId":51687,"corporation":false,"usgs":true,"family":"Poe","given":"T.P.","email":"","affiliations":[],"preferred":false,"id":740248,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70180942,"text":"70180942 - 1986 - What won't Turnstones eat?","interactions":[],"lastModifiedDate":"2018-05-20T11:34:59","indexId":"70180942","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1079,"text":"British Birds","active":true,"publicationSubtype":{"id":10}},"title":"What won't Turnstones eat?","docAbstract":"The Turnstone Arenaria interpres probably has one of the most varied diets of any wader species. Besides the 'normal' foods taken (see, e.g., Prater 1972, Nettleship 1973, Jones 1975), a considerable variety of 'unusual' foods and feeding behaviours has also been reported. Items taken include soap, gull excrement, dog food, potato peels, cheese, oatmeal, and the flesh of dead animals, including birds, a sheep Ovis, a wolf Lupus, a cat Felis, and a human corpse (Bell 1961; Campbell 1966; King 1961, 1964, 1982; King 1982; MacDonald & Parmelee 1962; Mercer 1966; Selway & Kendall 1965; Spencer 1966).
","language":"English","publisher":"The British Birds Charitable Trust","usgsCitation":"Gill, R., 1986, What won't Turnstones eat?: British Birds, v. 79, p. 402-403.","productDescription":"2 p.","startPage":"402","endPage":"403","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":335079,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":335078,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://britishbirds.co.uk/article/notes-921/"}],"volume":"79","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"589c3c50e4b0efcedb741126","contributors":{"authors":[{"text":"Gill, Robert E. Jr. 0000-0002-6385-4500 rgill@usgs.gov","orcid":"https://orcid.org/0000-0002-6385-4500","contributorId":171747,"corporation":false,"usgs":true,"family":"Gill","given":"Robert E.","suffix":"Jr.","email":"rgill@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":662924,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014933,"text":"70014933 - 1986 - Organic geochemical analysis of sedimentary organic matter associated with uranium","interactions":[],"lastModifiedDate":"2023-03-20T12:08:53.429038","indexId":"70014933","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Organic geochemical analysis of sedimentary organic matter associated with uranium","docAbstract":"Samples of sedimentary organic matter from several geologic environments and ages which are enriched in uranium (56 ppm to 12%) have been characterized. The three analytical techniqyes used to study the samples were Rock-Eval pyrolysis, pyrolysis-gas chromatography-mass spectrometry, and solid-state C-13 nuclear magnetic resonance (NMR) spectroscopy. In samples with low uranium content, the pyrolysis-gas chromatography products contain oxygenated functional groups (as hydroxyl) and molecules with both aliphatic and aromatic carbon atoms. These samples with low uranium content give measurable Rock-Eval hydrocarbon and organic-CO2 yields, and C-13 NMR values of > 30% aliphatic carbon. In contrast, uranium-rich samples have few hydrocarbon pyrolysis products, increased Rock-Eval organic-CO2 contents and > 70% aromatic carbon contents from C-13 NMR. The increase in aromaticity and decrease in hydrocarbon pyrolysis yield are related to the amount of uranium and the age of the uranium minerals, which correspond to the degree of radiation damage. The three analytical techniques give complementary results. Increase in Rock-Eval organic-CO2 yield correlates with uranium content for samples from the Grants uranium region. Calculations show that the amount of organic-CO2 corresponds to the quantity of uranium chemically reduced by the organic matter for the Grants uranium region samples.
Travertine deposits overlie the highest Number 2 surfaces in central Montana and clasts of travertine occur in gravels on lower Number 2 surfaces. Dating these travertine deposits may provide limits on the ages of surfaces that record intervals of extensive erosion during Pleistocene time. Analysis of three travertine samples from the southeast side of The Park yield an average uranium‐thorium age of 73 000 ±+M 7 000 years. Another sample from the west side of The Park is 320 000 (+ 160 000, − 70 000) years old. These results indicate that travertine deposits may have formed at several intervals. The surface beneath The Park travertine is older than about 320 000 years. Number 2 pediment gravels that contain travertine downslope from the oldest dated sample may be younger than about 320 000 years.
","language":"English","publisher":"Wiley","doi":"10.1002/esp.3290110212","usgsCitation":"Szabo, B.J., and Lindsey, D.A., 1986, Estimating limiting age for pleistocene erosional surfaces in central Montana by uranium-series dating of associated travertines: Earth Surface Processes and Landforms, v. 11, no. 2, p. 223-228, https://doi.org/10.1002/esp.3290110212.","productDescription":"6 p.","startPage":"223","endPage":"228","numberOfPages":"6","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":225583,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -109.72869873046874,\n 46.90712199744459\n ],\n [\n -109.11895751953125,\n 46.90712199744459\n ],\n [\n -109.11895751953125,\n 47.37603463349758\n ],\n [\n -109.72869873046874,\n 47.37603463349758\n ],\n [\n -109.72869873046874,\n 46.90712199744459\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"11","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-07-18","publicationStatus":"PW","scienceBaseUri":"505a0b28e4b0c8380cd525d0","contributors":{"authors":[{"text":"Szabo, Barney J.","contributorId":6848,"corporation":false,"usgs":true,"family":"Szabo","given":"Barney","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":368547,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindsey, D. A.","contributorId":49814,"corporation":false,"usgs":true,"family":"Lindsey","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":368548,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014512,"text":"70014512 - 1986 - NORMATIVE MINERALOGY OF OIL SHALE IN THE JUHAN CORE HOLE 4-1, PICEANCE CREEK BASIN, COLORADO.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:31","indexId":"70014512","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"NORMATIVE MINERALOGY OF OIL SHALE IN THE JUHAN CORE HOLE 4-1, PICEANCE CREEK BASIN, COLORADO.","docAbstract":"A procedure for calculating the quantities of normative minerals and kerogen in Colorado oil shale was developed and used to analyze a sequence of sodium-rich oil shales in a core hole near the depocenter of the Piceance Creek Basin in northwestern Colorado. The sequence of oil shales was found to average 48. 1 weight percent carbonate minerals, 32. 5 percent silicate minerals, 1. 9 percent pyrite, and 17. 5 percent kerogen. Dawsonite left bracket NaAl(OH)//2CO//3 right bracket and quartz are associated to a high degree in the vertical sequence, but no significant trends between mineral abundances and depth were noted.","largerWorkTitle":"Oil Shale Symposium Proceedings","conferenceTitle":"Nineteenth Oil Shale Symposium Proceedings.","conferenceLocation":"Golden, CO, USA","language":"English","publisher":"Colorado Sch of Mines Press","publisherLocation":"Golden, CO, USA","isbn":"0918062675","usgsCitation":"Dyni, J.R., Baker, J.W., and Mountjoy, W., 1986, NORMATIVE MINERALOGY OF OIL SHALE IN THE JUHAN CORE HOLE 4-1, PICEANCE CREEK BASIN, COLORADO., in Oil Shale Symposium Proceedings, Golden, CO, USA, p. 9-26.","startPage":"9","endPage":"26","numberOfPages":"18","costCenters":[],"links":[{"id":225642,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a616be4b0c8380cd71956","contributors":{"editors":[{"text":"Gary James H.","contributorId":128340,"corporation":true,"usgs":false,"organization":"Gary James H.","id":536289,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Dyni, John R. jdyni@usgs.gov","contributorId":756,"corporation":false,"usgs":true,"family":"Dyni","given":"John","email":"jdyni@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":368549,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baker, James W.","contributorId":46370,"corporation":false,"usgs":true,"family":"Baker","given":"James","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":368551,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mountjoy, Wayne","contributorId":21973,"corporation":false,"usgs":true,"family":"Mountjoy","given":"Wayne","email":"","affiliations":[],"preferred":false,"id":368550,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014513,"text":"70014513 - 1986 - Palladium, platinum, and rhodium contents of rocks near the lower margin of the Stillwater complex, Montana","interactions":[],"lastModifiedDate":"2024-01-05T17:38:30.405729","indexId":"70014513","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Palladium, platinum, and rhodium contents of rocks near the lower margin of the Stillwater complex, Montana","docAbstract":"SPalladium, platinum, and rhodium concentrations are reported for rocks belonging to the Peridotite zone of the Ultramafic series and the Basal series of the late Archcan Stillwater Complex, a suite of Stillwater-associated sills and dikes, and the metamorphic rocks lying within the contact aureole of the complex. Mean values do not exceed 20 ppb for any rock unit and the tenth percentile rarely exceeds 200 ppb. The concentration of Pd is greater than Pt for most rock groups; both of these elements have higher concentrations than Rh.A large part of the variability in the data appears to be related to rock types containing different proportions of sulfide. It is also notable that sulfur does not correlate with the platinum-group element concentrations for many lithologies, and when it does, it commonly is not a useful predictor of platinum-group element content. Further, calculated values of R, the mass ratio of silicate liquid which has equilibrated with sulfide liquid, are low (1 to 320). Analysis of this information suggests that the immiscible sulfide liquids, from which the sulfides formed, did not completely equilibrate with the silicate liquids with respect to their platinum-group element contents and that the silicate liquids were characterized by different concentrations and ratios of platinum-group elements.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.81.5.1169","issn":"03610128","usgsCitation":"Zientek, M.L., Foose, M.P., and Leung, M., 1986, Palladium, platinum, and rhodium contents of rocks near the lower margin of the Stillwater complex, Montana: Economic Geology, v. 81, no. 5, p. 1169-1178, https://doi.org/10.2113/gsecongeo.81.5.1169.","productDescription":"10 p.","startPage":"1169","endPage":"1178","numberOfPages":"10","costCenters":[],"links":[{"id":225643,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"81","issue":"5","noUsgsAuthors":false,"publicationDate":"1986-08-01","publicationStatus":"PW","scienceBaseUri":"505a747ce4b0c8380cd77683","contributors":{"authors":[{"text":"Zientek, M. L.","contributorId":6118,"corporation":false,"usgs":true,"family":"Zientek","given":"M.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":368552,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foose, M. P.","contributorId":97075,"corporation":false,"usgs":true,"family":"Foose","given":"M.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":368554,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Leung, Mei","contributorId":56386,"corporation":false,"usgs":true,"family":"Leung","given":"Mei","email":"","affiliations":[],"preferred":false,"id":368553,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014536,"text":"70014536 - 1986 - Zimbabweite, a new alkali-lead arsenic tantalate from St Anns mine, Karoi district, Zimbabwe","interactions":[],"lastModifiedDate":"2023-08-31T13:44:10.582996","indexId":"70014536","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1095,"text":"Bulletin de Mineralogie","active":true,"publicationSubtype":{"id":10}},"title":"Zimbabweite, a new alkali-lead arsenic tantalate from St Anns mine, Karoi district, Zimbabwe","docAbstract":"Zimbabweite (Na,K)2PbAs4(Ta,Nb,Ti)4O18, a new mineral with trivalent arsenic, has been recognized at St Anns mine, southeast of Miami, Karoi district, Zimbabwe, in kaolinized pegmatite and dump material.
The mineral is honey yellow-brown in large crystals, which are as much as 1 x 1 x 2 cm, and is clear pale yellow in thin fragments. Oxidation results in darkening of the color. There is one excellent cleavage, {010}. Zimbabweite has a Mohs hardness of 5 to 5.5, a white streak, adamantine luster, brittle fracture, is not magnetic, and does not fluoresce under either short wave or long wave ultraviolet light. dm = 6.20(3) and dc = 6.16 g/cm3. Optically, the mineral is biaxial (+), 2VZ = about 80°. Mean reflectances in air for an {010} = X-Z cleavage plate are : 589 nm--16.6 %, 470 nm--17.7 %, 546 nm--17.1 %, 650 nm--16.4 %. The indices of refraction determined by immersion methods are all greater than 2.10. Optic axis dispersion is very strong with ν > r, a = Z, b = Y, and c = X. The mineral is very pale yelow and is moderately pleochroic and X = pale yellow brown, Y = light reddish brown, and Z =reddish brown.
Zimbabweite is insoluble in common acids or bases. A chemical analysis yielded, in weight percent, Ta2O5 46.5, As2O3 26.5, PbO 15.0, Nb2O5 4.8, Na2O 3.1, K2O 1.5, TiO2 1.4, BaO 0.4, UO2 0.3, Bi2O3 0.2, H2O (total) 0.19, SnO2 0.1, F 0.04, SrO 0.02, total 100.05. A calculated formula is :
(Na1.51K0.48Ba0.04)Σ2.03Pb1.01(As4.03Bi0.01)Σ4.04(Ta3.17Nb0.55Ti0.26U0.02Sn0.01)Σ4.01O18.
Zimbabweite is orthorhombic, space group is Ccma or Cc2a, with a = 12.233(2)Å, b = 15.292(2)Å, c = 8.665(2)Å, V = 1621. 0(4) Å3, with Z = 4. No structural relationship between zimbabweite and any other tantalate minerals is apparent.
","language":"English","publisher":"Persee","doi":"10.3406/bulmi.1986.7943","usgsCitation":"Foord, E.E., Taggart, J., Gaines, R.V., Grubb, P.L., and Kristiansen, R., 1986, Zimbabweite, a new alkali-lead arsenic tantalate from St Anns mine, Karoi district, Zimbabwe: Bulletin de Mineralogie, v. 109, no. 4, p. 331-336, https://doi.org/10.3406/bulmi.1986.7943.","productDescription":"6 p.","startPage":"331","endPage":"336","numberOfPages":"6","costCenters":[],"links":[{"id":225960,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Zimbabwe","otherGeospatial":"Karoi District","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 29.664017433816042,\n -16.606052251996815\n ],\n [\n 29.664017433816042,\n -16.817629744392306\n ],\n [\n 29.856865623007025,\n -16.817629744392306\n ],\n [\n 29.856865623007025,\n -16.606052251996815\n ],\n [\n 29.664017433816042,\n -16.606052251996815\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"109","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd268e4b08c986b32f7cb","contributors":{"authors":[{"text":"Foord, Eugene E.","contributorId":96319,"corporation":false,"usgs":true,"family":"Foord","given":"Eugene","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":368611,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taggart, Joseph E.","contributorId":8992,"corporation":false,"usgs":true,"family":"Taggart","given":"Joseph E.","affiliations":[],"preferred":false,"id":368608,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gaines, R. V.","contributorId":7852,"corporation":false,"usgs":false,"family":"Gaines","given":"R.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":368607,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Grubb, P. L .C.","contributorId":19305,"corporation":false,"usgs":false,"family":"Grubb","given":"P.","email":"","middleInitial":"L .C.","affiliations":[],"preferred":false,"id":368609,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kristiansen, R.","contributorId":26821,"corporation":false,"usgs":false,"family":"Kristiansen","given":"R.","email":"","affiliations":[],"preferred":false,"id":368610,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70014537,"text":"70014537 - 1986 - Nd-Sr-Pb isotope constraints on the sources of west Maui volcano, Hawaii","interactions":[],"lastModifiedDate":"2020-10-01T18:33:28.873787","indexId":"70014537","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Nd-Sr-Pb isotope constraints on the sources of west Maui volcano, Hawaii","docAbstract":"The origin of the Emperor-Hawaiian volcanic chain is attributed to the northwesterly movement of the Pacific plate over a stationary mantle plume (hotspot)1. There has been considerable controversy as to the nature and number of sources of Hawaiian hotspot volcanism. Thus far, most geochemical models have been based on rock suites that are not representative of fully developed volcanoes. Nd and Sr isotope ratios and trace element concentrations of volcanics from Haleakala (Maui), where all three volcanic stages are developed, have been interpreted as reflecting a mixing process of two isotopically distinct sources2,3. In an attempt to test our earlier multiple-source model4, we have analysed Pb, Sr and Nd isotope ratios in volcanics from West Maui, the only other volcano with a complete volcanic record. Our results, presented here, indicate at least three isotopically distinct sources, one of which is heterogeneous with respect to Pb. Furthermore, the inferred depleted source for post-erosional volcanics has a Pb and Sr isotope composition intermediate between those of depleted and enriched mid-ocean ridge basalts (MORB, N-type and P-type), suggesting that this source is also heterogeneous. ?? 1986 Nature Publishing Group.","language":"English","publisher":"Nature","doi":"10.1038/319478a0","issn":"00280836","usgsCitation":"Hegner, E., Unruh, D., and Tatsumoto, M., 1986, Nd-Sr-Pb isotope constraints on the sources of west Maui volcano, Hawaii: Nature, v. 319, no. 6053, p. 478-480, https://doi.org/10.1038/319478a0.","productDescription":"3 p.","startPage":"478","endPage":"480","numberOfPages":"3","costCenters":[],"links":[{"id":225961,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Haleakala volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156.280517578125,\n 20.675190117067377\n ],\n [\n -156.21253967285156,\n 20.675190117067377\n ],\n [\n -156.21253967285156,\n 20.72978628596697\n ],\n [\n -156.280517578125,\n 20.72978628596697\n ],\n [\n -156.280517578125,\n 20.675190117067377\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"319","issue":"6053","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a63c5e4b0c8380cd726a6","contributors":{"authors":[{"text":"Hegner, E.","contributorId":32304,"corporation":false,"usgs":true,"family":"Hegner","given":"E.","affiliations":[],"preferred":false,"id":368612,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Unruh, D.","contributorId":89291,"corporation":false,"usgs":true,"family":"Unruh","given":"D.","affiliations":[],"preferred":false,"id":368614,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tatsumoto, M.","contributorId":76798,"corporation":false,"usgs":true,"family":"Tatsumoto","given":"M.","email":"","affiliations":[],"preferred":false,"id":368613,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014539,"text":"70014539 - 1986 - Resurgence of submersed aquatic macrophytes in the tidal Potomac River, Maryland, Virginia, and the District of Columbia","interactions":[],"lastModifiedDate":"2023-10-13T15:48:50.002324","indexId":"70014539","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1583,"text":"Estuaries","active":true,"publicationSubtype":{"id":10}},"title":"Resurgence of submersed aquatic macrophytes in the tidal Potomac River, Maryland, Virginia, and the District of Columbia","docAbstract":"A 1978–81 survey of submersed aquatic macrophytes in the tidal Potomac River showed that there were virtually no plants in the freshwater tidal river between Chain Bridge and Quantico, Virginia, decades after the disappearance of plants in the late 1930’s. Plant populations were monitored in subsequent years (1983–85) using qualitative shoreline surveys and quantitative resampling of the original 1978–81 transects. In 1983, 12 species of submersed aquatic macrophytes were found in the tidal river. Population increases were dramatic; by fall 1985, plants had colonized all shallow areas between Alexandria and Gunston Cove, Virginia.Hydrilla verticillata dominated in Dyke Marsh-Hunting Creek and Swan Creek. Most other areas contained a variable mixture ofHeteranthera dubia, Myriophyllum spicatum, Ceratophyllum demersum, Vallisneria americana, Najas guadalupensis andHydrilla verticillata. No plants were found along the main river or in tidal embayments in the reach between Gunston Cove and Quantico, Virginia. Total dry weight collected in the upper tidal river in fall 1985 was 14.5 times that of spring 1985, and four times that of fall 1984.
","language":"English","publisher":"Springer","doi":"10.2307/1351417","issn":"15592723","usgsCitation":"Carter, V., and Rybicki, N., 1986, Resurgence of submersed aquatic macrophytes in the tidal Potomac River, Maryland, Virginia, and the District of Columbia: Estuaries, v. 9, no. 4, p. 368-375, https://doi.org/10.2307/1351417.","productDescription":"8 p.","startPage":"368","endPage":"375","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":225963,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland, Virginia, District of Columbia","otherGeospatial":"Potomac River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.40966796875,\n 37.483576550426996\n ],\n [\n -76.35498046875,\n 37.483576550426996\n ],\n [\n -76.35498046875,\n 38.93377552819722\n ],\n [\n -77.40966796875,\n 38.93377552819722\n ],\n [\n -77.40966796875,\n 37.483576550426996\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"9","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aabfee4b0c8380cd86acd","contributors":{"authors":[{"text":"Carter, V.","contributorId":61115,"corporation":false,"usgs":true,"family":"Carter","given":"V.","email":"","affiliations":[],"preferred":false,"id":368627,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rybicki, N.","contributorId":96022,"corporation":false,"usgs":true,"family":"Rybicki","given":"N.","affiliations":[],"preferred":false,"id":368628,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014642,"text":"70014642 - 1986 - Gas-film coefficients for the volatilization of ethylene dibromide from water","interactions":[],"lastModifiedDate":"2020-01-18T12:07:21","indexId":"70014642","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Gas-film coefficients for the volatilization of ethylene dibromide from water","docAbstract":"Gas-film coefficients for the volatilization of ethylene dibromide (EDB) and water were determined in the laboratory as a function of wind speed and temperature. The ratio of the coefficients was independent of wind speed and increased slightly with temperature. Use of this ratio with an environmentally determined gas-film coefficient for the evaporation of water permits determination of the gas-film coefficient for the volatilization of EDB from environmental waters.","language":"English","publisher":"ACS","doi":"10.1021/es00151a016","issn":"0013936X","usgsCitation":"Rathbun, R.E., and Tal, D., 1986, Gas-film coefficients for the volatilization of ethylene dibromide from water: Environmental Science & Technology, v. 20, no. 9, p. 949-952, https://doi.org/10.1021/es00151a016.","productDescription":"4 p.","startPage":"949","endPage":"952","numberOfPages":"4","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":225460,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"9","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505a14dce4b0c8380cd54bd8","contributors":{"authors":[{"text":"Rathbun, R. E.","contributorId":61796,"corporation":false,"usgs":true,"family":"Rathbun","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":368893,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tal, D.Y.","contributorId":74887,"corporation":false,"usgs":true,"family":"Tal","given":"D.Y.","email":"","affiliations":[],"preferred":false,"id":368894,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014707,"text":"70014707 - 1986 - Crater Lake, Oregon: A restricted basin with base-of-slope aprons of nonchannelized turbidites","interactions":[],"lastModifiedDate":"2024-01-26T12:12:16.016992","indexId":"70014707","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Crater Lake, Oregon: A restricted basin with base-of-slope aprons of nonchannelized turbidites","docAbstract":"The basin floor of Crater Lake (10-km diameter, 600-m water depth) is covered by up to 75 m of sediment–gravity-flow deposits interbedded with mud. In the upper units (8 m (thick), sand and gravel layers with numerous wedging, strong seismic reflectors characterize the base-of-slope aprons at the basin margin. These layers evolve to turbidites of mainly thin, fine-grained, basin-plain type, characterized by numerous flat and weak seismic reflectors in the central basin floor. Many individual debris-chute sources funnel sediment to base-of-slope aprons: there, coarse-grained parts of the sediment–gravity flows deposit nonchannelized beds attributed to the F, A, B turbidite facies. While traversing the base-of-slope aprons, flows evolve to sheet-flow turbidity currents that deposit D-facies beds over the central basin floor. These processes and patterns of deposition characterize small siliciclastic basins without channelized submarine fans and are common in carbonate basins of all sizes.