{"pageNumber":"4355","pageRowStart":"108850","pageSize":"25","recordCount":184900,"records":[{"id":70016681,"text":"70016681 - 1991 - Seismic response of transamerical building. I. Data and preliminary analysis","interactions":[],"lastModifiedDate":"2013-03-15T20:17:18","indexId":"70016681","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2467,"text":"Journal of Structural Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Seismic response of transamerical building. I. Data and preliminary analysis","docAbstract":"The objective of this paper is to present preliminary analyses of a set of acceleration response records obtained during the October 17, 1989 Loma Prieta earthquake (Ms = 7.1) from the 60-story vertically tapered, pyramid-shaped Trans-america Building-a landmark of San Francisco. The building was instrumented in 1985 with 22 channels of synchronized sensors consisting of 13 uniaxial accelerometers deployed throughout the structure and connected to a central recording system and three triaxial strong-motion accelerographs at three different levels of the structure. No free-field accelerographs are at the site. The acceleration records permit the study of the behavior of this unique structure. The predominant translational response of the building and the associated frequency at approximately 0.28 Hz are identified from the records and their Fourier amplitude spectra. The records do not indicate any significant torsional motion. However, there is rocking type soil-structure interaction, and an associated frequency of approximately 2.0 Hz is identified from the Fourier amplitude spectra of the differential motions between the ground level and that at the basement. In addition, the response spectra for the basement motions indicate significant resonance in both directions at a period of approximately 0.5 seconds.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Structural Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)0733-9445(1991)117:8(2389)","issn":"07339445","usgsCitation":"Çelebi, M., and Safak, E., 1991, Seismic response of transamerical building. I. Data and preliminary analysis: Journal of Structural Engineering, v. 117, no. 8, p. 2389-2404, https://doi.org/10.1061/(ASCE)0733-9445(1991)117:8(2389).","startPage":"2389","endPage":"2404","numberOfPages":"16","costCenters":[],"links":[{"id":225122,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269414,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9445(1991)117:8(2389)"}],"volume":"117","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8b5ce4b08c986b317794","contributors":{"authors":[{"text":"Çelebi, M.","contributorId":36946,"corporation":false,"usgs":true,"family":"Çelebi","given":"M.","affiliations":[],"preferred":false,"id":374211,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Safak, E.","contributorId":104070,"corporation":false,"usgs":true,"family":"Safak","given":"E.","email":"","affiliations":[],"preferred":false,"id":374212,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016931,"text":"70016931 - 1991 - Fate of acetone in an outdoor model stream with a nitrate supplement, southern Mississippi, U.S.A.","interactions":[],"lastModifiedDate":"2019-04-10T09:08:03","indexId":"70016931","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Fate of acetone in an outdoor model stream with a nitrate supplement, southern Mississippi, U.S.A.","docAbstract":"<p>The fate of acetone in an outdoor model stream to which nitrate was added as a nutrient supplement was determined. The stream, in southern Mississippi, U.S.A. was 234 m long. Water was supplied to the stream by an artesian well at about 1.21 s<sup>−1</sup>, resulting in a mean water velocity of about 0.5 m min<sup>−1</sup>. Acetone was injected continuously for 26 days resulting in concentrations of 20–40 mg l<sup>−1</sup>. A nitrate solution was injected for 21 days resulting in an instream concentration of about 1.7 mg l<sup>−1</sup><span>&nbsp;</span>at the upstream end of the stream. Rhodamine-WT dye was used to determine the travel time and dispersion characteristics of the stream, and t-butyl alcohol was used to determine the volatilization characteristics.</p><p>Volatilization controlled the fate of acetone in the model stream. The lack of substantial bacterial degradation of acetone was contrary to expectations based on the results of laboratory degradation studies using model stream water enriched with nitrate. A possible explanation for the lack of significant degradation in the model stream may be the limited 6-h residence time of the acetone in the stream.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(91)90092-V","issn":"00221694","usgsCitation":"Rathbun, R.E., Stephens, D.W., and Tai, D.Y., 1991, Fate of acetone in an outdoor model stream with a nitrate supplement, southern Mississippi, U.S.A.: Journal of Hydrology, v. 123, no. 3-4, p. 225-242, https://doi.org/10.1016/0022-1694(91)90092-V.","productDescription":"18 ","startPage":"225","endPage":"242","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224953,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"123","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0f0fe4b0c8380cd5373e","contributors":{"authors":[{"text":"Rathbun, R. E.","contributorId":61796,"corporation":false,"usgs":true,"family":"Rathbun","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":374899,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stephens, D. W.","contributorId":68335,"corporation":false,"usgs":true,"family":"Stephens","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":374900,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tai, D. Y.","contributorId":59778,"corporation":false,"usgs":true,"family":"Tai","given":"D.","email":"","middleInitial":"Y.","affiliations":[],"preferred":false,"id":374898,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016615,"text":"70016615 - 1991 - Strontium isotopic constraints on the origin of ore-forming fluids of the Viburnum Trend, southeast Missouri","interactions":[],"lastModifiedDate":"2024-04-12T14:52:17.71729","indexId":"70016615","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Strontium isotopic constraints on the origin of ore-forming fluids of the Viburnum Trend, southeast Missouri","docAbstract":"<p>We have measured<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><msup><mi></mi><mn>87</mn></msup><mtext>Sr</mtext><msup><mi></mi><mn>86</mn></msup><mtext>Sr</mtext></math>\"><span class=\"MJX_Assistive_MathML\">87Sr86Sr</span></span></span><span>&nbsp;</span>and Rb and Sr concentrations in several minerals, primarily sulfides, spanning the paragenesis of hydrothermal mineralization in the Viburnum Trend in southeast Missouri. Separate measurements were made for fluid inclusions opened by crushing or thermal decrepitation and for the solids. For comparison, measurements were also made on samples of probable local aquifers, the Bonneterre Formation and the Lamotte Sandstone. For some of the samples, concentrations of K, Ca, Cl, Na, and Mg are also reported.</p><p>In several cases<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><msup><mi></mi><mn>87</mn></msup><mtext>Sr</mtext><msup><mi></mi><mn>86</mn></msup><mtext>Sr</mtext><mtext>ratios</mtext></math>\"><span class=\"MJX_Assistive_MathML\">87Sr86Srratios</span></span></span><span>&nbsp;</span>are different (higher) in the solids than in the fluid inclusions. We have investigated the possibility that either type of sample gives spurious results, e.g., that the fluid inclusions are secondary or contaminated by host dolomite, or that Sr in the solids reflects a detrital rather than an authigenic source. Consideration of mass balance, overall solute chemistry, and examination of non-sulfide dissolution residue, however, suggests that both types of sample reflect primary fluid Sr composition. We thus adopt the working hypothesis that Sr isotopic composition in fluids at the time of hydrothermal mineralization was highly variable.</p><p>The observed results for the Viburnum Trend do not conform well to expected trends for Mississippi Valley-type (MVT) mineralization based primarily on analyses of gangue carbonates, barite, and fluorite. Fluid inclusion Sr in some of the Viburnum Trend samples is more radiogenic than in the host dolomite but only moderately so; in other samples, notably main-stage octahedral galena, fluid inclusion Sr composition is within the range observed for the host dolomite. In contrast, Sr in some of the sulfides is very radiogenic, much more so than previously reported for MVT minerals, and is very radiogenic early in the paragenesis (pyrite, chalcopyrite, sphalerite), less radiogenic during main-stage ore deposition, and again more radiogenic in later paragenetic stages.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(91)90317-X","issn":"00167037","usgsCitation":"Brannon, J., Podosek, F., Viets, J., Leach, D.L., Goldhabe, M., and Rowan, E., 1991, Strontium isotopic constraints on the origin of ore-forming fluids of the Viburnum Trend, southeast Missouri: Geochimica et Cosmochimica Acta, v. 55, no. 5, p. 1407-1419, https://doi.org/10.1016/0016-7037(91)90317-X.","productDescription":"13 p.","startPage":"1407","endPage":"1419","numberOfPages":"13","costCenters":[],"links":[{"id":224932,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"55","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9bb5e4b08c986b31d041","contributors":{"authors":[{"text":"Brannon, J.C.","contributorId":56516,"corporation":false,"usgs":true,"family":"Brannon","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":374044,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Podosek, F.A.","contributorId":56802,"corporation":false,"usgs":true,"family":"Podosek","given":"F.A.","email":"","affiliations":[],"preferred":false,"id":374045,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Viets, J.G.","contributorId":82300,"corporation":false,"usgs":true,"family":"Viets","given":"J.G.","affiliations":[],"preferred":false,"id":374047,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leach, D. L.","contributorId":18758,"corporation":false,"usgs":true,"family":"Leach","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":374042,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Goldhabe, M.","contributorId":77423,"corporation":false,"usgs":true,"family":"Goldhabe","given":"M.","email":"","affiliations":[],"preferred":false,"id":374046,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rowan, E. L. 0000-0001-5753-6189","orcid":"https://orcid.org/0000-0001-5753-6189","contributorId":34921,"corporation":false,"usgs":true,"family":"Rowan","given":"E. L.","affiliations":[],"preferred":false,"id":374043,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70016614,"text":"70016614 - 1991 - Comparison of three different methods to merge multiresolution and multispectral data: Landsat TM and SPOT panchromatic","interactions":[],"lastModifiedDate":"2012-03-12T17:18:49","indexId":"70016614","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of three different methods to merge multiresolution and multispectral data: Landsat TM and SPOT panchromatic","docAbstract":"The merging of multisensor image data is becoming a widely used procedure because of the complementary nature of various data sets. Ideally, the method used to merge data sets with high-spatial and high-spectral resolution should not distort the spectral characteristics of the high-spectral resolution data. This paper compares the results of three different methods used to merge the information contents of the Landsat Thematic Mapper (TM) and Satellite Pour l'Observation de la Terre (SPOT) panchromatic data. The comparison is based on spectral characteristics and is made using statistical, visual, and graphical analyses of the results. The three methods used to merge the information contents of the Landsat TM and SPOT panchromatic data were the Hue-Intensity-Saturation (HIS), Principal Component Analysis (PCA), and High-Pass Filter (HPF) procedures. The HIS method distorted the spectral characteristics of the data the most. The HPF method distorted the spectral characteristics the least; the distortions were minimal and difficult to detect. -Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Chavez, P., Sides, S., and Anderson, J., 1991, Comparison of three different methods to merge multiresolution and multispectral data: Landsat TM and SPOT panchromatic: Photogrammetric Engineering and Remote Sensing, v. 57, no. 3, p. 295-303.","startPage":"295","endPage":"303","numberOfPages":"9","costCenters":[],"links":[{"id":224885,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"57","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f8b2e4b0c8380cd4d22f","contributors":{"authors":[{"text":"Chavez, P.S. Jr.","contributorId":75147,"corporation":false,"usgs":true,"family":"Chavez","given":"P.S.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":374041,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sides, S.C.","contributorId":9004,"corporation":false,"usgs":true,"family":"Sides","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":374039,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, J.A.","contributorId":60387,"corporation":false,"usgs":true,"family":"Anderson","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":374040,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016610,"text":"70016610 - 1991 - Source of atrazine and desethylatrazine in a river, during base flow","interactions":[],"lastModifiedDate":"2012-03-12T17:18:49","indexId":"70016610","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Source of atrazine and desethylatrazine in a river, during base flow","docAbstract":"A budget of atrazine and desethylatrazine loads was computed for a 116-kilometer reach of the Cedar River in Iowa to determine where these compounds enter the river during base-flow conditions. Loads were determined by measuring discharge and concentrations of the compounds for four main-stem sites along the Cedar River and for 27 tributaries on September 20-22, 1989. Tributaries contributed 17 percent of the increased atrazine load and 24 percent of the increased desethylatrazine load measured between the extreme upstream and downstream sites on the Cedar River. The remaining 76 to 83 percent of the increased loads were attributed to input along the groundwater's main stem. The ground-water samples were collected at depths from 1 to 2 meters beneath the river bottom where the ground water was determined to be moving toward the river. The sources of atrazine and desethylatrazine detected in the ground water may include bank storage of river water or ground-water recharge originating at some distance from the river.","conferenceTitle":"Proceedings of the 1991 National Conference on Irrigation and Drainage","conferenceDate":"22 July 1991 through 26 July 1991","conferenceLocation":"Honolulu, HI, USA","language":"English","publisher":"Publ by ASCE","publisherLocation":"New York, NY, United States","isbn":"0872628116","usgsCitation":"Squillace, P.J., Thurman, E.M., Fischer, E.E., and Soenksen, P.J., 1991, Source of atrazine and desethylatrazine in a river, during base flow, Proceedings of the 1991 National Conference on Irrigation and Drainage, Honolulu, HI, USA, 22 July 1991 through 26 July 1991, p. 253-259.","startPage":"253","endPage":"259","numberOfPages":"7","costCenters":[],"links":[{"id":224839,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9330e4b08c986b31a351","contributors":{"authors":[{"text":"Squillace, Paul J.","contributorId":59415,"corporation":false,"usgs":true,"family":"Squillace","given":"Paul","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":374029,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thurman, E. Michael","contributorId":9636,"corporation":false,"usgs":true,"family":"Thurman","given":"E.","email":"","middleInitial":"Michael","affiliations":[],"preferred":false,"id":374028,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fischer, Edward E. edf@usgs.gov","contributorId":1063,"corporation":false,"usgs":true,"family":"Fischer","given":"Edward","email":"edf@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":374027,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Soenksen, Phil J.","contributorId":78481,"corporation":false,"usgs":true,"family":"Soenksen","given":"Phil","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":374030,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016949,"text":"70016949 - 1991 - Fractal analysis of multiscale spatial autocorrelation among point data","interactions":[],"lastModifiedDate":"2013-03-13T21:02:18","indexId":"70016949","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1525,"text":"Environment and Planning A","active":true,"publicationSubtype":{"id":10}},"title":"Fractal analysis of multiscale spatial autocorrelation among point data","docAbstract":"The analysis of spatial autocorrelation among point-data quadrats is a well-developed technique that has made limited but intriguing use of the multiscale aspects of pattern. In this paper are presented theoretical and algorithmic approaches to the analysis of aggregations of quadrats at or above a given density, in which these sets are treated as multifractal regions whose fractal dimension, D, may vary with phenomenon intensity, scale, and location. The technique is illustrated with Matui's quadrat house-count data, which yield measurements consistent with a nonautocorrelated simulated Poisson process but not with an orthogonal unit-step random walk. The paper concludes with a discussion of the implications of such analysis for multiscale geographic analysis systems. -Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environment and Planning A","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1068/a230545","usgsCitation":"De Cola, L., 1991, Fractal analysis of multiscale spatial autocorrelation among point data: Environment and Planning A, v. 23, no. 4, p. 545-556, https://doi.org/10.1068/a230545.","startPage":"545","endPage":"556","numberOfPages":"12","costCenters":[],"links":[{"id":225142,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269304,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1068/a230545"}],"volume":"23","issue":"4","noUsgsAuthors":false,"publicationDate":"1991-04-01","publicationStatus":"PW","scienceBaseUri":"505a13a2e4b0c8380cd546ff","contributors":{"authors":[{"text":"De Cola, L.","contributorId":50297,"corporation":false,"usgs":true,"family":"De Cola","given":"L.","affiliations":[],"preferred":false,"id":374950,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016374,"text":"70016374 - 1991 - Vanadium accumulation in carbonaceous rocks: A review of geochemical controls during deposition and diagenesis","interactions":[],"lastModifiedDate":"2013-01-20T20:34:01","indexId":"70016374","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Vanadium accumulation in carbonaceous rocks: A review of geochemical controls during deposition and diagenesis","docAbstract":"Published data relevant to the geochemistry of vanadium were used to evaluate processes and conditions that control vanadium accumulation in carbonaceous rocks. Reduction, adsorption, and complexation of dissolved vanadium favor addition of vanadium to sediments rich in organic carbon. Dissolved vanadate (V(V)) species predominate in oxic seawater and are reduced to vanadyl ion (V(IV)) by organic compounds or H2S. Vanadyl ion readily adsorbs to particle surfaces and is added to the sediment as the particles settle. The large vanadium concentrations of rocks deposited in marine as compared to lacustrine environments are the result of the relatively large amount of vanadium provided by circulating ocean water compared to terrestrial runoff. Vanadium-rich carbonaceous rocks typically have high contents of organically bound sulfur and are stratigraphically associated with phosphate-rich units. A correspondence between vanadium content and organically bound sulfur is consistent with high activities of H2S during sediment deposition. Excess H2S exited the sediment into bottom waters and favored reduction of dissolved V(V) to V(IV) or possibly V(III). The stratigraphic association of vanadiferous and phosphatic rocks reflects temporal and spatial shifts in bottom water chemistry from suboxic (phosphate concentrated) to more reducing (euxinic?) conditions that favor vanadium accumulation. During diagenesis some vanadium-organic complexes migrate with petroleum out of carbonaceous rocks, but significant amounts of vanadium are retained in refractory organic matter or clay minerals. As carbon in the rock evolves toward graphite during metamorphism, vanadium is incorporated into silicate minerals. ?? 1991.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(91)90083-4","issn":"00092541","usgsCitation":"Breit, G.N., and Wanty, R., 1991, Vanadium accumulation in carbonaceous rocks: A review of geochemical controls during deposition and diagenesis: Chemical Geology, v. 91, no. 2, p. 83-97, https://doi.org/10.1016/0009-2541(91)90083-4.","startPage":"83","endPage":"97","numberOfPages":"15","costCenters":[],"links":[{"id":223567,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266073,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(91)90083-4"}],"volume":"91","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc111e4b08c986b32a439","contributors":{"authors":[{"text":"Breit, G. N.","contributorId":94664,"corporation":false,"usgs":true,"family":"Breit","given":"G.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":373315,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":373314,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016753,"text":"70016753 - 1991 - Geological and seismological evidence of increased explosivity during the 1986 eruptions of Pavlof volcano, Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:18:50","indexId":"70016753","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","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":"Geological and seismological evidence of increased explosivity during the 1986 eruptions of Pavlof volcano, Alaska","docAbstract":"We present results of study of the best-documented eruptions of Pavlof volcano in historic time. The 1986 eruptions were mostly Strombolian in character; a strong initial phase may have been Vulcanian. The 1986 activity erupted at least 8??106 m3 of feldspar-phyric basaltic andesite lava (SiO2=53-54%), and a comparable volume of wind-borne tephra. During the course of the eruption, 5300 explosion earthquakes occurred, the largest of which was equivalent to an ML=2.5 earthquake. Volcanic tremor was recorded for 2600 hours, and the strongest tremor was recorded out to a distance of 160 km and had an amplitude of at least 54 cm2 reduced displacement. The 1986 eruptions modified the structure of the vent area for the first time in over two decades. A possible pyroclastic flow was observed on 19 June 1986, the first time such a phenomenon has been observed at the volcano. Overall, the 1986 eruptions were the strongest and longest duration eruptions in historic time, and changed a temporal pattern of activity that had persisted from 1973-1984. ?? 1991 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of Volcanology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF00265414","issn":"02588900","usgsCitation":"McNutt, S., Miller, T.P., and Taber, J., 1991, Geological and seismological evidence of increased explosivity during the 1986 eruptions of Pavlof volcano, Alaska: Bulletin of Volcanology, v. 53, no. 2, p. 86-98, https://doi.org/10.1007/BF00265414.","startPage":"86","endPage":"98","numberOfPages":"13","costCenters":[],"links":[{"id":205534,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00265414"},{"id":224701,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2256e4b0c8380cd56f5d","contributors":{"authors":[{"text":"McNutt, S.R.","contributorId":26722,"corporation":false,"usgs":true,"family":"McNutt","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":374405,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, T. P.","contributorId":49345,"corporation":false,"usgs":true,"family":"Miller","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":374406,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Taber, J.J.","contributorId":14124,"corporation":false,"usgs":true,"family":"Taber","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":374404,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016754,"text":"70016754 - 1991 - Mesh-size effects on drift sample composition as determined with a triple net sampler","interactions":[],"lastModifiedDate":"2012-03-12T17:18:51","indexId":"70016754","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Mesh-size effects on drift sample composition as determined with a triple net sampler","docAbstract":"Nested nets of three different mesh apertures were used to study mesh-size effects on drift collected in a small mountain stream. The innermost, middle, and outermost nets had, respectively, 425 ??m, 209 ??m and 106 ??m openings, a design that reduced clogging while partitioning collections into three size groups. The open area of mesh in each net, from largest to smallest mesh opening, was 3.7, 5.7 and 8.0 times the area of the net mouth. Volumes of filtered water were determined with a flowmeter. The results are expressed as (1) drift retained by each net, (2) drift that would have been collected by a single net of given mesh size, and (3) the percentage of total drift (the sum of the catches from all three nets) that passed through the 425 ??m and 209 ??m nets. During a two day period in August 1986, Chironomidae larvae were dominant numerically in all 209 ??m and 106 ??m samples and midday 425 ??m samples. Large drifters (Ephemerellidae) occurred only in 425 ??m or 209 ??m nets, but the general pattern was an increase in abundance and number of taxa with decreasing mesh size. Relatively more individuals occurred in the larger mesh nets at night than during the day. The two larger mesh sizes retained 70% of the total sediment/detritus in the drift collections, and this decreased the rate of clogging of the 106 ??m net. If an objective of a sampling program is to compare drift density or drift rate between areas or sampling dates, the same mesh size should be used for all sample collection and processing. The mesh aperture used for drift collection should retain all species and life stages of significance in a study. The nested net design enables an investigator to test the adequacy of drift samples. ?? 1991 Kluwer Academic Publishers.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00015344","issn":"00188158","usgsCitation":"Slack, K.V., Tilley, L.J., and Kennelly, S., 1991, Mesh-size effects on drift sample composition as determined with a triple net sampler: Hydrobiologia, v. 209, no. 3, p. 215-226, https://doi.org/10.1007/BF00015344.","startPage":"215","endPage":"226","numberOfPages":"12","costCenters":[],"links":[{"id":205535,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00015344"},{"id":224702,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"209","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5440e4b0c8380cd6cf14","contributors":{"authors":[{"text":"Slack, K. V.","contributorId":82386,"corporation":false,"usgs":true,"family":"Slack","given":"K.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":374408,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tilley, L. J.","contributorId":91836,"corporation":false,"usgs":true,"family":"Tilley","given":"L.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":374409,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kennelly, S.S.","contributorId":75697,"corporation":false,"usgs":true,"family":"Kennelly","given":"S.S.","email":"","affiliations":[],"preferred":false,"id":374407,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":5222588,"text":"5222588 - 1991 - Captive breeding and reintroduction of the endangered masked bobwhite","interactions":[],"lastModifiedDate":"2026-04-29T16:17:16.709146","indexId":"5222588","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3807,"text":"Zoo Biology","active":true,"publicationSubtype":{"id":10}},"title":"Captive breeding and reintroduction of the endangered masked bobwhite","docAbstract":"<p><span>Efforts to restore the endangered masked bobwhite (</span><i>Colinus virginianus ridgwayi</i><span>) to its former range have required 1) habitat acquisition, restoration, and preservation; 2) captive propagation; and 3) reintroduction of captive-bred stock. In its role to recover the masked bobwhite, the Patuxent Wildlife Research Center (U.S. Fish and Wildlife Service) has refined captive breeding techniques; provided captive-produced stock for release; conducted field research on the distribution, limiting factors, and habitat characteristics of this species; and developed release methods. Techniques for the husbandry and captive management, breeding, artificial incubation and hatching of eggs, and rearing of young of the masked bobwhite have been developed. Successful reintroduction techniques for the masked bobwhite have included prerelease conditioning and/or cross-fostering of captive-reared masked bobwhite chicks to a wild-caught, related, vasectomized bobwhite species and their release to the wild as family units. In addition, the establishment by the U.S. Fish and Wildlife Service of the Buenos Aires National Wildlife Refuge in 1985 has further enhanced the potential for establishing a self-sustaining population of the masked bobwhite in the U.S. Through continued releases and active management of habitat, therefore, it is believed that the masked bobwhite can become permanently established at the refuge to ensure its continued survival in the wild.</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/zoo.1430100602","usgsCitation":"Carpenter, J.W., Gabel, R.R., and Goodwin, J., 1991, Captive breeding and reintroduction of the endangered masked bobwhite: Zoo Biology, v. 10, no. 6, p. 439-449, https://doi.org/10.1002/zoo.1430100602.","productDescription":"11 p.","startPage":"439","endPage":"449","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194195,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"6","noUsgsAuthors":false,"publicationDate":"2005-05-13","publicationStatus":"PW","scienceBaseUri":"4f4e49e5e4b07f02db5e6d61","contributors":{"authors":[{"text":"Carpenter, J. W.","contributorId":81854,"corporation":false,"usgs":true,"family":"Carpenter","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":336619,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gabel, R. R.","contributorId":70500,"corporation":false,"usgs":true,"family":"Gabel","given":"R.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":336618,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goodwin, J.G.","contributorId":55919,"corporation":false,"usgs":true,"family":"Goodwin","given":"J.G.","affiliations":[],"preferred":false,"id":336617,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70016926,"text":"70016926 - 1991 - Some current themes in physical hydrology of the land-atmosphere interface","interactions":[],"lastModifiedDate":"2012-03-12T17:18:52","indexId":"70016926","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Some current themes in physical hydrology of the land-atmosphere interface","docAbstract":"Certain themes arise repeatedly in current literature dealing with the physical hydrology of the interface between the atmosphere and the continents. Papers contributed to the 1991 International Association of Hydrological Sciences Symposium on Hydrological Interactions between Atmosphere, Soil and Vegetation echo these themes, which are discussed in this paper. The land-atmosphere interface is the region where atmosphere, soil, and vegetation have mutual physical contact, and a description of exchanges of matter or energy among these domains must often consider the physical properties and states of the entire system. A difficult family of problems is associated with the reconciliation of the wide range of spatial scales that arise in the course of observational, theoretical, and modeling activities. These scales are determined by some of the physical elements of the interface, by patterns of natural variability of the physical composition of the interface, by the dynamics of the processes at the interface, and by methods of measurement and computation. Global environmental problems are seen by many hydrologists as a major driving force for development of the science. The challenge for hydrologists will be to respond to this force as scientists rather than problem-solvers.","largerWorkTitle":"IAHS Publication (International Association of Hydrological Sciences)","conferenceTitle":"20th General Assembly of the International Union of Geodesy and Geophysics","conferenceDate":"11 August 1991 through 24 August 1991","conferenceLocation":"Vienna, Austria","language":"English","publisher":"Publ by IAHS","publisherLocation":"Wallingford, United Kingdom","isbn":"0947571132","usgsCitation":"Milly, P., 1991, Some current themes in physical hydrology of the land-atmosphere interface, <i>in</i> IAHS Publication (International Association of Hydrological Sciences), no. 204, Vienna, Austria, 11 August 1991 through 24 August 1991, p. 3-10.","startPage":"3","endPage":"10","numberOfPages":"8","costCenters":[],"links":[{"id":224860,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"204","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b928fe4b08c986b319fa8","contributors":{"authors":[{"text":"Milly, P. C. D.","contributorId":100489,"corporation":false,"usgs":true,"family":"Milly","given":"P. C. D.","affiliations":[],"preferred":false,"id":374877,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016492,"text":"70016492 - 1991 - Visible and near-infrared (0.4-2.5  μm) reflectance spectra of playa evaporite minerals","interactions":[],"lastModifiedDate":"2015-05-29T13:25:56","indexId":"70016492","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Visible and near-infrared (0.4-2.5  μm) reflectance spectra of playa evaporite minerals","docAbstract":"<p><span>Visible and near-infrared (VNIR; 0.4&ndash;2.4 &mu;m) reflectance spectra were recorded for 35 saline minerals that represent the wide range of mineral and brine chemical compositions found in playa evaporite settings. The spectra show that many of the saline minerals exhibit diagnostic near-infrared absorption bands, chiefly attributable to vibrations of hydrogen-bonded structural water molecules. VNIR reflectance spectra can be used to detect minor hydrate phases present in mixtures dominated by anhydrous halite or thenardite, and therefore will be useful in combination with X ray diffraction data for characterizing natural saline mineral assemblages. In addition, VNIR reflectance spectra are sensitive to differences in sample hydration state and should facilitate in situ studies of minerals that occur as fragile, transitory dehydration products in natural salt crusts. The use of spectral reflectance measurements in playa studies should aid in mapping evaporite mineral distributions and may provide insight into the geochemical and hydrological controls on playa mineral and brine development.</span></p>","language":"English","publisher":"AGU Publications","doi":"10.1029/91JB01714","issn":"01480227","usgsCitation":"Crowley, J.K., 1991, Visible and near-infrared (0.4-2.5  μm) reflectance spectra of playa evaporite minerals: Journal of Geophysical Research, v. 96, no. B10, p. 16231-16240, https://doi.org/10.1029/91JB01714.","productDescription":"10 p.","startPage":"16231","endPage":"16240","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":223373,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"96","issue":"B10","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bc289e4b08c986b32abd4","contributors":{"authors":[{"text":"Crowley, James K.","contributorId":10928,"corporation":false,"usgs":true,"family":"Crowley","given":"James","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":373709,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1014630,"text":"1014630 - 1991 - Prey selectivity by age-0 in white perch (Morone americana) and yellow perch (Perca flavescens) in laboratory experiments","interactions":[],"lastModifiedDate":"2012-02-02T00:04:29","indexId":"1014630","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Prey selectivity by age-0 in white perch (Morone americana) and yellow perch (Perca flavescens) in laboratory experiments","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Fisheries and Aquatic Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","collaboration":"92-062/TF","usgsCitation":"Parrish, D., and Margraf, F., 1991, Prey selectivity by age-0 in white perch (Morone americana) and yellow perch (Perca flavescens) in laboratory experiments: Canadian Journal of Fisheries and Aquatic Sciences, v. 48, no. 4, p. 607-610.","productDescription":"p. 607-610","startPage":"607","endPage":"610","numberOfPages":"4","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":132154,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aaae4b07f02db668f52","contributors":{"authors":[{"text":"Parrish, D.L.","contributorId":15144,"corporation":false,"usgs":true,"family":"Parrish","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":320777,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Margraf, F.J.","contributorId":47738,"corporation":false,"usgs":true,"family":"Margraf","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":320778,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016459,"text":"70016459 - 1991 - Thermodynamic properties of anthophyllite and talc: corrections and discussion of calorimetric data","interactions":[],"lastModifiedDate":"2012-03-12T17:18:43","indexId":"70016459","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Thermodynamic properties of anthophyllite and talc: corrections and discussion of calorimetric data","docAbstract":"Arithmetic errors in calculating heat capacity values (Krupka, 1984; Krupka et al, 1985a) for anthophyllite and several errors in the Hess cycles utilized to derive enthalpies of formation of anthophyllite and talc are identified, and revised values are reported. -from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Hemingway, B.S., 1991, Thermodynamic properties of anthophyllite and talc: corrections and discussion of calorimetric data: American Mineralogist, v. 76, no. 9-10, p. 1589-1596.","startPage":"1589","endPage":"1596","numberOfPages":"8","costCenters":[],"links":[{"id":223169,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","issue":"9-10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb275e4b08c986b3257fa","contributors":{"authors":[{"text":"Hemingway, B. S.","contributorId":7268,"corporation":false,"usgs":true,"family":"Hemingway","given":"B.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":373604,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016457,"text":"70016457 - 1991 - Heat capacities and entropies of sillimanite, fibrolite, andalusite, kyanite, and quartz and the Al2SiO5 phase diagram","interactions":[],"lastModifiedDate":"2012-03-12T17:18:43","indexId":"70016457","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Heat capacities and entropies of sillimanite, fibrolite, andalusite, kyanite, and quartz and the Al2SiO5 phase diagram","docAbstract":"Low-temperature heat capacities for sillimanite, fibrolite, and both fine-grained and coarse-grained quartz have been measured. Superambient heat capacities have been measured for four sillimanite, two andalusite, one kyanite, and two fibrolite samples. Equations are recommended for the temperature dependence of the heat capacities of kyanite, andalusite, sillimanite, and fibrolite. The heat capacity functions have been combined with thermal expansion (fibrolite and sillimanite reported here), enthalpy of solution, and phase equilibrium data in order to construct a phase diagram for the Al2SiO5 polymorphs. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Hemingway, B.S., Robie, R.A., Evans, H.T., and Kerrick, D.M., 1991, Heat capacities and entropies of sillimanite, fibrolite, andalusite, kyanite, and quartz and the Al2SiO5 phase diagram: American Mineralogist, v. 76, no. 9-10, p. 1597-1613.","startPage":"1597","endPage":"1613","numberOfPages":"17","costCenters":[],"links":[{"id":223167,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","issue":"9-10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2fe9e4b0c8380cd5d1d5","contributors":{"authors":[{"text":"Hemingway, B. S.","contributorId":7268,"corporation":false,"usgs":true,"family":"Hemingway","given":"B.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":373599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robie, R. A.","contributorId":71237,"corporation":false,"usgs":true,"family":"Robie","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":373602,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Evans, H. T. Jr.","contributorId":41859,"corporation":false,"usgs":true,"family":"Evans","given":"H.","suffix":"Jr.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":373600,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kerrick, Derrill M.","contributorId":68883,"corporation":false,"usgs":true,"family":"Kerrick","given":"Derrill","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":373601,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016434,"text":"70016434 - 1991 - Cenozoic prograding sequences of the Antarctic continental margin: a record of glacio-eustatic and tectonic events","interactions":[],"lastModifiedDate":"2019-06-11T09:47:47","indexId":"70016434","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Cenozoic prograding sequences of the Antarctic continental margin: a record of glacio-eustatic and tectonic events","docAbstract":"<p>Sedimentary sections up to 6-14 km thick lie beneath many areas of the Antarctic continental margin. The upper parts of the sections contain up to 6 km of Cenozoic glacial and possibly non-glacial sequences that have prograded the continental shelf up to 85 km. We describe the Cenozoic sequences using two general categories based on their acoustic geometries. Type IA sequences, which account for most prograding of the Antarctic continental shelf, have complex sigmoidal geometries and some acoustic characteristics atypical of low-latitude margins, such as troughs and mounds lying parallel and normal to the shelf edge and high velocities (2.0-2.6 km/s) for flat layers within 150 m of the seafloor. Type IIA sequences, which principally aggrade the paleoshelf, lie beneath type IA sequences and have mostly simple geometries and gently dipping reflections. The prograding sequences are commonly located near the seaward edges of major Mesozoic and older margin structures. Relatively rapid Cenozoic subsidence has occurred due to the probable rifting in the Ross Sea, thermal subsidence in the Antarctic Peninsula, and isostatic crustal flexure in Wilkes Land. In Prydz Bay and the Weddell Sea, prograding sequences cover Mesozoic basins that have undergone little apparent Cenozoic tectonism. Grounded ice sheets are viewed by us, and others, as the principal mechanism for depositing the Antarctic prograding sequences. During the initial advance of grounded ice the continental shelf is flexurally overdeepened, the inner shelf is heavily eroded, and gently dipping glacial strata are deposited on the shelf (i.e type IIA sequences). The overdeepened shelf profile is preserved (a) during glacial times, by grounded ice sheets episodically crossing the shelf, eroding sediments from onshore and inner shelf areas, and depositing sediments at the front of the ice sheet as outer shelf topset-banks and continental slope foreset-aprons (i.e. type IA sequences), and (b) during interglacial times, like today, by little or no clastic sedimentation on the continental shelf other than beneath retreated ice shelves lying far from the continental sheld edge. Ice streams carve broad depressions across the shelf and carry abundant basal sediments directly to the continental shelf edge, thereby creating troughmouth fans and sheet-like prograding sequences (i.e. type IA sequences). Numerous acoustic unconformities and multiple overcompacted layers within the prograding sequences suggest major fluctuations of the Antarctic Ice Sheet. The available drilling and seismic interpretations provide the following history: (1) Cenozoic ice sheets have existed in places near the continental shelf since middle to late Eocene time. (2) A grounded Antarctic ice sheet first expanded to the continental shelf edge, with probable overdeepening of the outer shelf, in late Eucene to early Oligocene time in Prydz Bay, possibly in early Miocene time in the Ross Sea, and at least by middle Miocene time in the Weddell Sea. (3) The relative amounts of shelf prograding and inferred ice-volume variations (and related sea-level changes) have increased since middle to late Miocene time in the eastern Ross Sea, Prydz Bay, and possibly Weddell Sea. Our analysis is preliminary. Further acoustic surveys and scientific drilling are needed to resolve the proximal Antarctic record of glacio-eustatic, climatic, and tectonic events recorded by the prograding sequences.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(91)90008-R","issn":"00253227","usgsCitation":"Cooper, A.K., Barrett, P.J., Hinz, K., Traube, V., Letichenkov, G., and Stagg, H., 1991, Cenozoic prograding sequences of the Antarctic continental margin: a record of glacio-eustatic and tectonic events: Marine Geology, v. 102, no. 1-4, p. 175-213, https://doi.org/10.1016/0025-3227(91)90008-R.","productDescription":"39 p.","startPage":"175","endPage":"213","numberOfPages":"39","costCenters":[],"links":[{"id":223021,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"102","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f3e6e4b0c8380cd4ba0f","contributors":{"authors":[{"text":"Cooper, A. K.","contributorId":50149,"corporation":false,"usgs":true,"family":"Cooper","given":"A.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":373500,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barrett, P. J.","contributorId":96347,"corporation":false,"usgs":false,"family":"Barrett","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":373503,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hinz, K.","contributorId":83273,"corporation":false,"usgs":true,"family":"Hinz","given":"K.","email":"","affiliations":[],"preferred":false,"id":373502,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Traube, V.","contributorId":29134,"corporation":false,"usgs":true,"family":"Traube","given":"V.","email":"","affiliations":[],"preferred":false,"id":373499,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Letichenkov, G.","contributorId":61963,"corporation":false,"usgs":true,"family":"Letichenkov","given":"G.","email":"","affiliations":[],"preferred":false,"id":373501,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stagg, H.M.J.","contributorId":7843,"corporation":false,"usgs":true,"family":"Stagg","given":"H.M.J.","email":"","affiliations":[],"preferred":false,"id":373498,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70016400,"text":"70016400 - 1991 - Biomarkers in Tertiary mélange, western Olympic Peninsula, Washington, U.S.A.","interactions":[],"lastModifiedDate":"2015-05-29T11:02:40","indexId":"70016400","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Biomarkers in Tertiary mélange, western Olympic Peninsula, Washington, U.S.A.","docAbstract":"<p><span>Middle Eocene to middle Miocene m&eacute;lange and broken formations are exposed in the coastal outcrops along the west side of the Olympic Peninsula, Washington. A petroleum geochemical assessment of these geologic units has included the investigation of biomarker compounds. A comparison was made of biomarkers in an oil sample from a middle Miocene reservoir penetrated in the Medina No. 1 well with biomarkers in extracts from two samples of middle Eocene Ozette m&eacute;lange (one sample having a strong petroliferous odor, and the other sample lacking this characteristic odor). Distribution patterns of&nbsp;</span><i>n</i><span>-alkanes, tricyclic terpanes, pentacyclic triterpanes, steranes, and diasteranes are remarkably similar in the oil and rock extracts. Biomarker maturity parameters indicate higher maturity in the oil relative to the extracts. The presence of 17&alpha;(H)-23,28-bisnorlupane, 18&alpha;(H)- and 18&beta;(H)-oleanane, and de-A-lupane and an odd-carbon-number dominance of the&nbsp;</span><i>n</i><span>-alkanes in the oil and extracts seems to tie the hydrocarbons to a common source that has a significant terrigenous component.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(91)90066-Z","issn":"00092541","usgsCitation":"Kvenvolden, K.A., Hostettler, F.D., Rapp, J., and Snavely, P., 1991, Biomarkers in Tertiary mélange, western Olympic Peninsula, Washington, U.S.A.: Chemical Geology, v. 93, no. 1-2, p. 101-110, https://doi.org/10.1016/0009-2541(91)90066-Z.","productDescription":"10 p.","startPage":"101","endPage":"110","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":223114,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266074,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(91)90066-Z"}],"volume":"93","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f188e4b0c8380cd4aca4","contributors":{"authors":[{"text":"Kvenvolden, Keith A. kkvenvolden@usgs.gov","contributorId":3384,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"Keith","email":"kkvenvolden@usgs.gov","middleInitial":"A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":373378,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hostettler, Frances D. fdhostet@usgs.gov","contributorId":3383,"corporation":false,"usgs":true,"family":"Hostettler","given":"Frances","email":"fdhostet@usgs.gov","middleInitial":"D.","affiliations":[],"preferred":true,"id":373379,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rapp, John B.","contributorId":32028,"corporation":false,"usgs":true,"family":"Rapp","given":"John B.","affiliations":[],"preferred":false,"id":373377,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Snavely, Parke D. Jr.","contributorId":80328,"corporation":false,"usgs":true,"family":"Snavely","given":"Parke D.","suffix":"Jr.","affiliations":[],"preferred":false,"id":373376,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016478,"text":"70016478 - 1991 - Geochemistry of a Tertiary sedimentary phosphate deposit: Baja California Sur, Mexico","interactions":[],"lastModifiedDate":"2013-01-20T20:38:05","indexId":"70016478","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of a Tertiary sedimentary phosphate deposit: Baja California Sur, Mexico","docAbstract":"The San Gregorio Formation in Baja California Sur, a phosphate-enriched sedimentary unit of late Oligocene to early Miocene age, has been analyzed in two areas (La Purisima and San Hilario) for its chemical composition (major oxides, Cu, Cd, Cr, Co, V, and rare-earth elements - REE) and isotopic composition (??18O and ??13C). A detrital and a marine component were determined from major oxides. The detrital component consists of an unaltered volcanic-ash fraction and a terrigenous clay-silt fraction. The marine component, which accumulated initially as biogenic and hydrogenous material, is now present as opal-A, opal-CT, CaCO3, organic matter, and an authigenic phosphate fraction, mostly pelletal and composed of the carbonate-fluorapatite mineral francolite. The minor elements have been partitioned into these components by assuming a constant composition for the two detrital fractions. The composition of the marine component of minor elements can then be interpreted by assuming that the stoichiometry of the original accumulating organic matter was equal to that of modern plankton. The Cu and Cd contents in the marine component of all rocks require that the seawater-derived fractions of these two metals were supplied to the seafloor solely by organic matter. Enrichments of Cr and V at both sites required an additional marine input. On the basis of their geochemistry in the modern ocean, Cr and V could have precipitated, or been adsorbed, onto settling particles from an O2 minimum zone in which the O2 content was low enough to promote denitrification rather than oxygen respiration. An enrichment of the REE, now within the apatite fraction, resulted from their adsorption onto particulates also in the O2 minimum zone and to the dissolution and alteration of biogenic phases (predominantly silica) within the sediment. Co and Fe2O3 show no enrichment above a detrital contribution. The ??18O-values of apatites from the La Purisima site are heavier than those of apatites from the San Hilario site, whereas the ??13C-values show the opposite trend. One possible interpretation of these variations is that ??18O reflects seawater values and ??13C sediment pore water values. This interpretation suggests that upwelling rates and primary productivity within the water column were greater at La Purisima, an interpretation that is corroborated by a greater abundance of apatite measured in outcrop at La Purisima. The Ce anomalies of the phosphate-enriched samples also differ between the two sites, indicating that they also recorded water masses, similar to the ??18O-values. ?? 1991.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(91)90075-3","issn":"00092541","usgsCitation":"Piper, D., 1991, Geochemistry of a Tertiary sedimentary phosphate deposit: Baja California Sur, Mexico: Chemical Geology, v. 92, no. 4, p. 283-316, https://doi.org/10.1016/0009-2541(91)90075-3.","startPage":"283","endPage":"316","numberOfPages":"34","costCenters":[],"links":[{"id":266077,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(91)90075-3"},{"id":223224,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a16eae4b0c8380cd552ef","contributors":{"authors":[{"text":"Piper, D.Z.","contributorId":34154,"corporation":false,"usgs":false,"family":"Piper","given":"D.Z.","email":"","affiliations":[],"preferred":false,"id":373678,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016952,"text":"70016952 - 1991 - The first Tertiary (Paleocene) marine mollusks from the Eureka Sound Group, Ellesmere Island, Canada","interactions":[],"lastModifiedDate":"2024-06-18T11:25:21.954078","indexId":"70016952","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2412,"text":"Journal of Paleontology","active":true,"publicationSubtype":{"id":10}},"title":"The first Tertiary (Paleocene) marine mollusks from the Eureka Sound Group, Ellesmere Island, Canada","docAbstract":"<div class=\"abstract-content\"><div class=\"abstract\" data-abstract-type=\"normal\"><p>The gastropod<span>&nbsp;</span><span class=\"italic\">Drepanochilus pervetus</span><span>&nbsp;</span>(Stanton) and the bivalve<span>&nbsp;</span><span class=\"italic\">Cytrodaria rutupiensis</span><span>&nbsp;</span>(Morris) occur in the Mount Moore Formation at Strathcona Fiord, west-central Ellesmere Island, northern Canada. They are the first marine mollusks identified from the Eureka Sound Group of the Canadian arctic islands. These mollusks correlate with Paleocene faunas of the Cannonball Formation of North Dakota and South Dakota, the Prince Creek Formation of northern Alaska, the Barentsburg Formation of Svalbard, and the Thanet and Oldhaven Formations of southeastern England. These occurrences imply that the earliest Tertiary Arctic Ocean molluscan fauna was compositionally distinct from coeval faunas of the northern Atlantic Ocean.</p></div></div>","language":"English","publisher":"Cambridge University","doi":"10.1017/S0022336000020461","issn":"00223360","usgsCitation":"Marincovich, L., and Zinsmeister, W., 1991, The first Tertiary (Paleocene) marine mollusks from the Eureka Sound Group, Ellesmere Island, Canada: Journal of Paleontology, v. 65, no. 2, p. 242-248, https://doi.org/10.1017/S0022336000020461.","productDescription":"7 p.","startPage":"242","endPage":"248","numberOfPages":"7","costCenters":[],"links":[{"id":225193,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"65","issue":"2","noUsgsAuthors":false,"publicationDate":"2016-05-20","publicationStatus":"PW","scienceBaseUri":"505bac06e4b08c986b323216","contributors":{"authors":[{"text":"Marincovich, L. Jr.","contributorId":16157,"corporation":false,"usgs":true,"family":"Marincovich","given":"L.","suffix":"Jr.","affiliations":[],"preferred":false,"id":374955,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zinsmeister, W.J.","contributorId":88498,"corporation":false,"usgs":true,"family":"Zinsmeister","given":"W.J.","email":"","affiliations":[],"preferred":false,"id":374956,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016397,"text":"70016397 - 1991 - Institutional issues affecting the integration and use of remotely sensed data and geographic information systems","interactions":[],"lastModifiedDate":"2017-01-18T14:14:28","indexId":"70016397","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Institutional issues affecting the integration and use of remotely sensed data and geographic information systems","docAbstract":"The developers as well as the users of remotely sensed data and geographic information system (GIS) techniques are associated with nearly all types of institutions in government, industry, and academia. Individuals in these various institutions often find the barriers to accepting remote sensing and GIS are not necessarily technical in nature, but can be attributed to the institutions themselves. Several major institutional issues that affect the technologies of remote sensing and GIS are data availability, data marketing and costs, equipment availability and costs, standards and practices, education and training, and organizational infrastructures. Not only are problems associated with these issues identified, but needs and opportunities also are discussed. -from Authors","language":"English","usgsCitation":"Lauer, D.T., Estes, J.E., Jensen, J., and Greenlee, D.D., 1991, Institutional issues affecting the integration and use of remotely sensed data and geographic information systems: Photogrammetric Engineering and Remote Sensing, v. 57, no. 6, p. 647-654.","productDescription":"8 p.","startPage":"647","endPage":"654","numberOfPages":"8","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":223111,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"57","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3c2ae4b0c8380cd62b18","contributors":{"authors":[{"text":"Lauer, D. T.","contributorId":47907,"corporation":false,"usgs":true,"family":"Lauer","given":"D.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":373371,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Estes, J. E.","contributorId":80378,"corporation":false,"usgs":true,"family":"Estes","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":373372,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jensen, J.R.","contributorId":32127,"corporation":false,"usgs":true,"family":"Jensen","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":373370,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Greenlee, D. D.","contributorId":20079,"corporation":false,"usgs":true,"family":"Greenlee","given":"D.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":373369,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016456,"text":"70016456 - 1991 - Boromuscovite, a new member of the mica group, from the Little Three mine pegmatite, Ramona district, San Diego County, California","interactions":[],"lastModifiedDate":"2012-03-12T17:18:43","indexId":"70016456","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Boromuscovite, a new member of the mica group, from the Little Three mine pegmatite, Ramona district, San Diego County, California","docAbstract":"Boromuscovite, ideally KAl2(Si3B)O10(OH,F)2, in which  [4]Al is replaced by B relative to muscovite, occurs as a late-stage, postpocket rupture mineral within the New Spaulding Pocket, main Little Three pegmatite dike. The mineral is white to cream colored and occurs as a porcelaneous veneer and coating on primary minerals. The average grain size is less than 3-4 ??m, but the coatings may be as much as 1 cm or more thick. Fragments of topaz, albite, elbaite, and other pocket minerals are included in the coating. The boromuscovite precipitated from a late-stage hydothermal fluid; it occurs only as a snowlike coating. Chemical composition, unit-cell parameters, Mohs hardness, cleavage, fracture, and optical properties are reported. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Foord, E., Martin, R., Fitzpatrick, J.J., Taggart, J., and Crock, J., 1991, Boromuscovite, a new member of the mica group, from the Little Three mine pegmatite, Ramona district, San Diego County, California: American Mineralogist, v. 76, no. 11-12, p. 1998-2002.","startPage":"1998","endPage":"2002","numberOfPages":"5","costCenters":[],"links":[{"id":223166,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f21fe4b0c8380cd4b001","contributors":{"authors":[{"text":"Foord, E.E.","contributorId":86835,"corporation":false,"usgs":true,"family":"Foord","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":373597,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, R.F.","contributorId":69305,"corporation":false,"usgs":true,"family":"Martin","given":"R.F.","email":"","affiliations":[],"preferred":false,"id":373596,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fitzpatrick, J. J.","contributorId":95078,"corporation":false,"usgs":true,"family":"Fitzpatrick","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":373598,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Taggart, J.E. Jr.","contributorId":51301,"corporation":false,"usgs":true,"family":"Taggart","given":"J.E.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":373594,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Crock, J.G.","contributorId":58236,"corporation":false,"usgs":true,"family":"Crock","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":373595,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70014958,"text":"70014958 - 1991 - Geochemical recognition of a captured back-arc basin metabasaltic complex, southwestern Oregon","interactions":[],"lastModifiedDate":"2024-03-14T11:13:31.524385","indexId":"70014958","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2309,"text":"Journal of Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical recognition of a captured back-arc basin metabasaltic complex, southwestern Oregon","docAbstract":"<div class=\"col-lg-9 article__content\"><div class=\"article__body show-references \"><div class=\"hlFld-Abstract\"><div class=\"abstractSection abstractInFull\"><p>An extensive fault-bounded amphibolite terrane of Late Jurassic (<span class=\"NLM_tex-math\"><img src=\"https://www.journals.uchicago.edu/na101/home/literatum/publisher/uchicago/journals/content/jg/1991/i30068772/629534/20180625/images/eqs/eq-00001.gif\" alt=\"\" data-mce-src=\"https://www.journals.uchicago.edu/na101/home/literatum/publisher/uchicago/journals/content/jg/1991/i30068772/629534/20180625/images/eqs/eq-00001.gif\"></span>) metamorphic age occurring in the northeastern Klamath Mountains of southern Oregon has been recognized as the remnants of an ancient back-arc basin. In spite of thorough metamorphic recrystallization under amphibolite-facies conditions, the amphibolite locally displays relict igneous textures which suggest that the protoliths included basaltic dikes or sills, shallow diabase intrusions, and gabbros. The major- and minor-element chemistry of the amphibolite indicates that some alteration of original compositions has occurred. Nevertheless, certain elements (e.g. Zr, Ti, Y, Hf, P, Th, Ta, and the REE) were probably immobile and retain their original igneous abundances. Chondrite-normalized REE patterns are similar to those of mid-ocean ridge basalt (MORB): concave-downward and flat or slightly LREE-depleted, with abundances about six to 30 times chondritic values. Patterns are slightly LREE-enriched and HREE-depleted relative to average MORB. Most samples plot in or near MORB fields in tectonomagmatic discrimination diagrams, but relative enrichment in Th and the LREE suggest the involvement of subduction-related fluids in magma genesis. In this regard, the amphibolite is very similar to some back-arc basin basalts. The geochemical data, together with the present-day geologic context, indicate that the tectonic setting of eruption/intrusion was probably within a back-arc basin that existed inboard (east) of a pre-Nevadan volcanic arc. The basalt (now amphibolite) and the overlying sediments (now the May Creek Schist) were metamorphosed and deformed during accretion to North America during the Late Jurassic Nevadan orogeny.</p></div></div></div></div>","language":"English","publisher":"University of Chicago Press","doi":"10.1086/629534","issn":"00221376","usgsCitation":"Donato, M.M., 1991, Geochemical recognition of a captured back-arc basin metabasaltic complex, southwestern Oregon: Journal of Geology, v. 99, no. 5, p. 711-728, https://doi.org/10.1086/629534.","productDescription":"18 p.","startPage":"711","endPage":"728","numberOfPages":"18","costCenters":[],"links":[{"id":223627,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"99","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1696e4b0c8380cd551d7","contributors":{"authors":[{"text":"Donato, M. M.","contributorId":88329,"corporation":false,"usgs":true,"family":"Donato","given":"M.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":369708,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70016452,"text":"70016452 - 1991 - Geochemical transformations and modeling of two deep-well injected hazardous wastes","interactions":[],"lastModifiedDate":"2024-03-19T22:43:03.683558","indexId":"70016452","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical transformations and modeling of two deep-well injected hazardous wastes","docAbstract":"<p>Two liquid hazardous wastes (an alkaline brine-like solution and a dilute acidic waste) were mixed with finely ground rock samples of three injection-related lithologies (sandstone, dolomite, and siltstone) for 155 to 230 days at 325°K-10.8 MPa. The pH and inorganic chemical composition of the alkaline waste were not significantly altered by any of the rock samples after 230 days of mixing. The acidic waste was neutralized as a consequence of carbonate dissolution, ion exchange, or clay-mineral dissolution, and hence was transformed into a nonhazardous waste.</p>","language":"English","publisher":"National Groundwater Association","doi":"10.1111/j.1745-6584.1991.tb00558.x","issn":"0017467X","usgsCitation":"Roy, W.R., Seyler, B., Steele, J., Mravik, S., Moore, D., Krapac, I., Peden, J., and Griffin, R.A., 1991, Geochemical transformations and modeling of two deep-well injected hazardous wastes: Groundwater, v. 29, no. 5, p. 671-677, https://doi.org/10.1111/j.1745-6584.1991.tb00558.x.","productDescription":"7 p.","startPage":"671","endPage":"677","numberOfPages":"7","costCenters":[],"links":[{"id":223165,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"5","noUsgsAuthors":false,"publicationDate":"2005-08-04","publicationStatus":"PW","scienceBaseUri":"505a16c2e4b0c8380cd5525a","contributors":{"authors":[{"text":"Roy, William R.","contributorId":45454,"corporation":false,"usgs":true,"family":"Roy","given":"William","middleInitial":"R.","affiliations":[],"preferred":false,"id":373580,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Seyler, B.","contributorId":75279,"corporation":false,"usgs":true,"family":"Seyler","given":"B.","affiliations":[],"preferred":false,"id":373584,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Steele, J.D.","contributorId":22093,"corporation":false,"usgs":true,"family":"Steele","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":373577,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mravik, S.C.","contributorId":59183,"corporation":false,"usgs":true,"family":"Mravik","given":"S.C.","affiliations":[],"preferred":false,"id":373583,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Moore, D.M.","contributorId":29576,"corporation":false,"usgs":true,"family":"Moore","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":373578,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Krapac, I.G.","contributorId":33850,"corporation":false,"usgs":true,"family":"Krapac","given":"I.G.","email":"","affiliations":[],"preferred":false,"id":373579,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Peden, J.M.","contributorId":46224,"corporation":false,"usgs":true,"family":"Peden","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":373582,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Griffin, R. A.","contributorId":46211,"corporation":false,"usgs":true,"family":"Griffin","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":373581,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70016362,"text":"70016362 - 1991 - Geochemistry of dissolved inorganic carbon in a Coastal Plain aquifer. 2. Modeling carbon sources, sinks, and δ13C evolution","interactions":[],"lastModifiedDate":"2015-05-29T11:14:11","indexId":"70016362","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of dissolved inorganic carbon in a Coastal Plain aquifer. 2. Modeling carbon sources, sinks, and δ13C evolution","docAbstract":"<p><span>Stable isotope data for dissolved inorganic carbon (DIC), carbonate shell material and cements, and microbial CO</span><sub>2</sub><span>&nbsp;were combined with organic and inorganic chemical data from aquifer and confining-bed pore waters to construct geochemical reaction models along a flowpath in the Black Creek aquifer of South Carolina. Carbon-isotope fractionation between DIC and precipitating cements was treated as a Rayleigh distillation process. Organic matter oxidation was coupled to microbial fermentation and sulfate reduction. All reaction models reproduced the observed chemical and isotopic compositions of final waters. However, model 1, in which all sources of carbon and electron-acceptors were assumed to be internal to the aquifer, was invalidated owing to the large ratio of fermentation CO</span><sub>2</sub><span>&nbsp;to respiration CO</span><sub>2</sub><span>&nbsp;predicted by the model (5&ndash;49) compared with measured ratios (two or less). In model 2, this ratio was reduced by assuming that confining beds adjacent to the aquifer act as sources of dissolved organic carbon and sulfate. This assumption was based on measured high concentrations of dissolved organic acids and sulfate in confining-bed pore waters (60&ndash;100 &mu;M and 100&ndash;380 &mu;M, respectively) relative to aquifer pore waters (from less than 30 &mu;M and 2&ndash;80 &mu;M, respectively). Sodium was chosen as the companion ion to organic-acid and sulfate transport from confining beds because it is the predominant cation in confining-bed pore waters. As a result, excessive amounts of Na-for-Ca ion exchange and calcite precipitation (three to four times more cement than observed in the aquifer) were required by model 2 to achieve mass and isotope balance of final water. For this reason, model 2 was invalidated. Agreement between model-predicted and measured amounts of carbonate cement and ratios of fermentation CO</span><sub>2</sub><span>&nbsp;to respiration CO</span><sub>2</sub><span>&nbsp;were obtained in a reaction model that assumed confining beds act as sources of DIC, as well as organic acids and sulfate. This assumption was supported by measured high concentrations of DIC in confining beds (2.6&ndash;2.7 mM). Results from this study show that geochemical models of confined aquifer systems must incorporate the effects of adjacent confining beds to reproduce observed groundwater chemistry accurately.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(91)90111-T","issn":"00221694","usgsCitation":"McMahon, P.B., and Chapelle, F.H., 1991, Geochemistry of dissolved inorganic carbon in a Coastal Plain aquifer. 2. Modeling carbon sources, sinks, and δ13C evolution: Journal of Hydrology, v. 127, no. 1-4, p. 109-135, https://doi.org/10.1016/0022-1694(91)90111-T.","productDescription":"27 p.","startPage":"109","endPage":"135","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":223365,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"127","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a16f2e4b0c8380cd55313","contributors":{"authors":[{"text":"McMahon, Peter B. 0000-0001-7452-2379 pmcmahon@usgs.gov","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":724,"corporation":false,"usgs":true,"family":"McMahon","given":"Peter","email":"pmcmahon@usgs.gov","middleInitial":"B.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":373274,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":373275,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70014961,"text":"70014961 - 1991 - Early evolution of Tubulogenerina during the Paleogene of Europe","interactions":[],"lastModifiedDate":"2013-03-24T12:07:05","indexId":"70014961","displayToPublicDate":"1991-01-01T00:00:00","publicationYear":"1991","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2294,"text":"Journal of Foraminiferal Research","active":true,"publicationSubtype":{"id":10}},"title":"Early evolution of Tubulogenerina during the Paleogene of Europe","docAbstract":"The early evolution of Tubulogenerina took place in Europe where eight species occur in lower Eocene to uppermost Oligocene or lower Miocene strata. Species diversity within Tubulogenerina dropped significantly in the early Oligocne; only a single species persisted from the late Eocene, and it became extinct before the end of the early Oligocene. Morphologic changes during the European phylogeny of Tubulogenerina include (1) the development of costate and more complex tubulopore ornamentation, and (2) the change from a single elongated apertural slit with a single toothplate to multiple apertures and toothplates. Three new Tubulogenerina species are described. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Foraminiferal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/gsjfr.21.4.299","issn":"00961191","usgsCitation":"Gibson, T., Barbin, V., Poignant, A., and Sztrakos, K., 1991, Early evolution of Tubulogenerina during the Paleogene of Europe: Journal of Foraminiferal Research, v. 21, no. 4, p. 299-312, https://doi.org/10.2113/gsjfr.21.4.299.","startPage":"299","endPage":"312","numberOfPages":"14","costCenters":[],"links":[{"id":223630,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269893,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gsjfr.21.4.299"}],"volume":"21","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0486e4b0c8380cd50a2b","contributors":{"authors":[{"text":"Gibson, T. G.","contributorId":103702,"corporation":false,"usgs":true,"family":"Gibson","given":"T. G.","affiliations":[],"preferred":false,"id":369717,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barbin, V.","contributorId":63537,"corporation":false,"usgs":true,"family":"Barbin","given":"V.","email":"","affiliations":[],"preferred":false,"id":369715,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Poignant, A.","contributorId":26816,"corporation":false,"usgs":true,"family":"Poignant","given":"A.","email":"","affiliations":[],"preferred":false,"id":369714,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sztrakos, K.","contributorId":91633,"corporation":false,"usgs":true,"family":"Sztrakos","given":"K.","email":"","affiliations":[],"preferred":false,"id":369716,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}