Mineral-aqueous solution equilibria for the assemblages talc-quartz, tremolite-talc-quartz, diopside-tremolite-quartz, wollastonite-diopside-quartz and wollastonite-quartz have been studied at 2 kb total pressure, 500° to 700°C and chloride concentrations from 0.03 to 6.0 molal. Most work was at 1 m chloride. Both buffered and unbuffered data were obtained and a recalibration of the Ag-AgCl buffer is presented. Log equilibrium quotients at 500°, 600° and 700°C are respectively: Ta-Qz (
Overall dissociation constants of MgCl2 and CaCl2 were calculated from the experimental data using the calculated ionic activity constants for the reactions and the established dissociation constants of HCl. The negative log values are respectively: 3.88. 6.63, 9.20 for CaCl2 and 4.60, 7.54, 10.37 for MgCl2 at 500°, 600° and 700°C, 2 kb. The Ca values are about an order of magnitude more positive than the conductance-derived values by Frantz and Marshall (1982).
The phase relations developed in this study have application to the genesis of talc, tremolite, and diopside-bearing assemblages in some regional metamorphic rocks, but more specifically to the calcsilicate skarn assemblages of many metasomatic aureoles. The equilibrium fluids are characterized by high concentrations of Ca relative to Mg and increasing
An arrival time difference method utilizing refracted arrivals from earthquakes in a homogeneous, layered earth model has been developed for the simultaneous determination of near-source (in situ) velocity and relative locations of earthquakes. The method is particularly applicable when analyzing data from arrays in which most of the recording stations are far (i.e., several focal depths) from a group of events. This iterative scheme locates earthquakes relative to a master event and performs an inversion for in situ velocity using a generalized inverseleast squares estimation procedure. Direct arrivals, when available, may be included to stabilize the inversion and increase the accuracy of the event locations. We tested this scheme on artificial data contaminated by random and systematic arrival time errors, gaps in azimuthal coverage, and inaccuracies in the assumed velocity model. As usual, depth is the least well-resolved hypocenter coordinate, but this scheme yielded accurate locations of most events while converging to the correct velocity model.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/BSSA0750020415","issn":"00371106","usgsCitation":"Shedlock, K.M., Jones, L.M., and Ma, X., 1985, Determination of elastic wave velocity and relative hypocenter locations using refracted waves. I. Methodology: Bulletin of the Seismological Society of America, v. 75, no. 2, p. 427-439, https://doi.org/10.1785/BSSA0750020415.","productDescription":"13 p.","startPage":"427","endPage":"439","numberOfPages":"13","costCenters":[],"links":[{"id":222439,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"2","noUsgsAuthors":false,"publicationDate":"1985-04-01","publicationStatus":"PW","scienceBaseUri":"5059fd43e4b0c8380cd4e717","contributors":{"authors":[{"text":"Shedlock, Kaye M.","contributorId":61788,"corporation":false,"usgs":true,"family":"Shedlock","given":"Kaye","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":364544,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jones, Lucile M. jones@usgs.gov","contributorId":1014,"corporation":false,"usgs":true,"family":"Jones","given":"Lucile","email":"jones@usgs.gov","middleInitial":"M.","affiliations":[{"id":508,"text":"Office of the AD Hazards","active":true,"usgs":true}],"preferred":true,"id":364543,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ma, Xiufang","contributorId":105437,"corporation":false,"usgs":true,"family":"Ma","given":"Xiufang","email":"","affiliations":[],"preferred":false,"id":364545,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70012778,"text":"70012778 - 1985 - Compositional and mineralogic constraints on the genesis of ophiolite hosted nickel mineralization in the Pevkos area, Limassol Forest, Cyprus","interactions":[],"lastModifiedDate":"2012-03-12T17:19:10","indexId":"70012778","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2746,"text":"Mineralium Deposita","active":true,"publicationSubtype":{"id":10}},"title":"Compositional and mineralogic constraints on the genesis of ophiolite hosted nickel mineralization in the Pevkos area, Limassol Forest, Cyprus","docAbstract":"Mineralization composed dominantly of primary troilite, maucherite, pentlandite, and chalcopyrite, and secondary valleriite occurs in serpentinized transition zone rocks of the Limasol Forest segment of the Troodos ophiolite complex, Cyprus. Whole-rock and electron microprobe analyses of this mineralization gives ranges of Cu/(Cu+Ni)=0.16 to 0.47, Pt/(Pt+Pd)=0.66 to 0.51, Ni/Co=6.33 to 13.4, and chondrite normalized plots with low concentrations of Rh, Pt, and Pd, but relatively high Au. Estimated distribution coefficients of nickel and iron between olivine and ore range from 0.5 to 7.4. Most of these data are unlike values from magmatic sulfide deposits and indicate either a complete alteration of a preexisting magmatic sulfide concentration or, more likely, a nonmagmatic origin for this mineralization. ?? 1985 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mineralium Deposita","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF00204279","issn":"00264598","usgsCitation":"Foose, M.P., Economou, M., and Panayiotou, A., 1985, Compositional and mineralogic constraints on the genesis of ophiolite hosted nickel mineralization in the Pevkos area, Limassol Forest, Cyprus: Mineralium Deposita, v. 20, no. 4, p. 234-240, https://doi.org/10.1007/BF00204279.","startPage":"234","endPage":"240","numberOfPages":"7","costCenters":[],"links":[{"id":205201,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00204279"},{"id":222098,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f935e4b0c8380cd4d4ca","contributors":{"authors":[{"text":"Foose, M. P.","contributorId":97075,"corporation":false,"usgs":true,"family":"Foose","given":"M.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":364503,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Economou, M.","contributorId":72533,"corporation":false,"usgs":true,"family":"Economou","given":"M.","email":"","affiliations":[],"preferred":false,"id":364502,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Panayiotou, A.","contributorId":49109,"corporation":false,"usgs":true,"family":"Panayiotou","given":"A.","email":"","affiliations":[],"preferred":false,"id":364501,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70012779,"text":"70012779 - 1985 - Experimental chemical weathering of various bedrock types at different pH-values. 1. Sandstone and granite","interactions":[],"lastModifiedDate":"2019-12-03T07:37:06","indexId":"70012779","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","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":"Experimental chemical weathering of various bedrock types at different pH-values. 1. Sandstone and granite","docAbstract":"Experimental chemical weathering of the so-called Old Rag Granite and Massanutten Sandstone, Virginia, U.S.A., has produced a comparison with the natural environment, and prediction of the effect of acid precipitation. The experimental results of the release of elements, dissolution of minerals, total rock weathered and the degree of weathering as function of volume of leachate were plotted. These data were compared with the natural environment. The use of the plots to predict the effect of high levels of rain acidity on weathering of these rocks is demonstrated.
A nonexpandable 14-Å clay was developed from the alteration of biotite during the experimental chemical weathering of the granite at pH 4. This interstratified Al(OH)—mica clay resembles those of the soil developed on the granite and sandstone. Hydroxy-Al may be precipitating between the mica interlayers and producing a 14-Å spacing. Development of this clay by chemical alteration of biotite may change the current hypotheses about its origin in the soils of northeastern U.S.A.
While Al-hydroxide seems to regulate Al concentrations in stream waters at the present level of rain acidity, it was found that at lower pH and in the presence of high sulfate concentrations, Al solubility may be controlled by Al-sulfate phase(s).
","language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(85)90149-4","issn":"00092541","usgsCitation":"Afifi, A., Bricker, O., and Chemerys, J., 1985, Experimental chemical weathering of various bedrock types at different pH-values. 1. Sandstone and granite: Chemical Geology, v. 49, no. 1-3, p. 87-113, https://doi.org/10.1016/0009-2541(85)90149-4.","productDescription":"27 p. ","startPage":"87","endPage":"113","numberOfPages":"27","costCenters":[],"links":[{"id":222099,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266105,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(85)90149-4"}],"country":"United States","state":"Virginia 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\"}}]}","volume":"49","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0dc4e4b0c8380cd531a6","contributors":{"authors":[{"text":"Afifi, A.A.","contributorId":98768,"corporation":false,"usgs":true,"family":"Afifi","given":"A.A.","email":"","affiliations":[],"preferred":false,"id":364506,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bricker, O.P.","contributorId":33717,"corporation":false,"usgs":true,"family":"Bricker","given":"O.P.","affiliations":[],"preferred":false,"id":364504,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chemerys, J.C.","contributorId":94293,"corporation":false,"usgs":true,"family":"Chemerys","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":364505,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1003076,"text":"1003076 - 1985 - Organochlorine concentrations in prefledging common terns Sterna hirundo at three Rhode Island USA colonies","interactions":[],"lastModifiedDate":"2020-02-26T13:43:44","indexId":"1003076","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1272,"text":"Colonial Waterbirds","printIssn":"07386028","active":false,"publicationSubtype":{"id":10}},"title":"Organochlorine concentrations in prefledging common terns Sterna hirundo at three Rhode Island USA colonies","docAbstract":"Concentrations of DDE, polychlorinated biphenyls (PCBs), and polychlorinated diphenyl ethers (PCDPEs) in carcasses of prefledging Common Terns (Sterna hirundo) at three Rhode Island colonies support the hypothesis that local contamination is responsible for among-colony differences observed in eggs in an earlier study. The highest concentrations of DDE and PCBs (mean=0.24 and 2.8 ppm wet weight) were found in prefledging terns from Providence, a highly industrialized area, and the lowest (DDE range=nd-0.11, PCBs mean=0.85) in terns from Price Neck, an undeveloped area 40 km to the south, PCDPEs were detected in 3 of 14 tern carcasses from Providence and were not detected in carcasses from 2 other colonies. The occurrence and concentrations of DDE and PCBs in killifish (Fundulus spp.), a major dietary item of Common Terns, qualitatively demonstrated the same trend among locations.","language":"English","publisher":"Waterbird Society","doi":"10.2307/1521065","usgsCitation":"Custer, T., Bunck, C., and Stafford, C., 1985, Organochlorine concentrations in prefledging common terns Sterna hirundo at three Rhode Island USA colonies: Colonial Waterbirds, v. 8, no. 2, p. 150-154, https://doi.org/10.2307/1521065.","productDescription":"5 p.","startPage":"150","endPage":"154","numberOfPages":"5","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true},{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":129982,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":15608,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/1521065?origin=crossref","linkFileType":{"id":5,"text":"html"},"description":"5750.000000000000000"}],"country":"United States","state":"Rhode Island","otherGeospatial":"Providence Barge, Wickford Tower, Prince Neck ","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.47979736328125,\n 41.691373270757246\n ],\n [\n -71.34246826171875,\n 41.691373270757246\n ],\n [\n -71.34246826171875,\n 41.875696393231\n ],\n [\n -71.47979736328125,\n 41.875696393231\n ],\n [\n -71.47979736328125,\n 41.691373270757246\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.49490356445312,\n 41.52091689636249\n ],\n [\n -71.39602661132812,\n 41.52091689636249\n ],\n [\n -71.39602661132812,\n 41.62673502076991\n ],\n [\n -71.49490356445312,\n 41.62673502076991\n ],\n [\n -71.49490356445312,\n 41.52091689636249\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.38092041015625,\n 41.414925457021816\n ],\n [\n -71.26693725585938,\n 41.414925457021816\n ],\n [\n -71.26693725585938,\n 41.50446357504803\n ],\n [\n -71.38092041015625,\n 41.50446357504803\n ],\n [\n -71.38092041015625,\n 41.414925457021816\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"8","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db6966c5","contributors":{"authors":[{"text":"Custer, T. W. 0000-0003-3170-6519","orcid":"https://orcid.org/0000-0003-3170-6519","contributorId":91802,"corporation":false,"usgs":true,"family":"Custer","given":"T. W.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":312714,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bunck, C.M.","contributorId":72337,"corporation":false,"usgs":true,"family":"Bunck","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":312713,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stafford, C.L.","contributorId":62460,"corporation":false,"usgs":true,"family":"Stafford","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":312712,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70012780,"text":"70012780 - 1985 - Engineering-geology site appraisal of the Federal Capital Territory, Nigeria","interactions":[],"lastModifiedDate":"2023-08-30T16:39:22.775372","indexId":"70012780","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1128,"text":"Bulletin of the International Association of Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Engineering-geology site appraisal of the Federal Capital Territory, Nigeria","docAbstract":"The 7,700-km2-area Federal Capital Territory, Nigeria, is underlain by crystalline igneous and metamorphic rocks of Precambrian age. Sandstone and claystone of Cretaceous age overlie Precambrian rocks in the southwestern part of the Territory. Laterite caps many hills of Cretaceous rock, some hills of Precambrian rock, and crops out near stream banks in the east and northeast. The most conspicuous structural features are a broad “J”-shaped fold traversing the eastern and central part of the Territory and a north-trending shear zone along the eastern boundary. The soils of the Territory are lateritic and belong to the SW-SP-SM (Unified Soil Classification System) groups covering Precambrian migmatites gneisses and granites and the SC group covering Cretaceous sediments and Precambrian mica-rich schists. The average penetrometer shear strength of the soil is 3.11 bars. The engineering characteristics of the rocks are (1) medium- to high-strength massive and gneissic rock, (2) low-to medium-strength bedded rock, and (3) low-strength foliated and sheared rock. An area of at least 800 km2 is free from apparent geological hazards and should be suitable for construction of a capital city, its environs and supporting facilities.
","language":"English","publisher":"Springer","doi":"10.1007/BF02594749","usgsCitation":"Ege, J., Griffitts, W.R., and Overstreet, W., 1985, Engineering-geology site appraisal of the Federal Capital Territory, Nigeria: Bulletin of the International Association of Engineering Geology, v. 31, no. 1, p. 71-79, https://doi.org/10.1007/BF02594749.","productDescription":"9 p.","startPage":"71","endPage":"79","numberOfPages":"9","costCenters":[],"links":[{"id":222100,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Nigeria","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 7.8547348958221335,\n 9.400571234038196\n ],\n [\n 6.725007973657853,\n 9.400571234038196\n ],\n [\n 6.725007973657853,\n 8.349497501044027\n ],\n [\n 7.8547348958221335,\n 8.349497501044027\n ],\n [\n 7.8547348958221335,\n 9.400571234038196\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"31","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0460e4b0c8380cd5094f","contributors":{"authors":[{"text":"Ege, J. R.","contributorId":106117,"corporation":false,"usgs":false,"family":"Ege","given":"J. R.","affiliations":[],"preferred":false,"id":364509,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Griffitts, W. R.","contributorId":10428,"corporation":false,"usgs":true,"family":"Griffitts","given":"W.","middleInitial":"R.","affiliations":[],"preferred":false,"id":364507,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Overstreet, W.C.","contributorId":105294,"corporation":false,"usgs":true,"family":"Overstreet","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":364508,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013326,"text":"70013326 - 1985 - Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska","interactions":[],"lastModifiedDate":"2019-12-17T15:51:45","indexId":"70013326","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska","docAbstract":"An approximately E-W-trending belt of porphyritic peraluminous granitic rocks, metamorphosed and deformed to augen gneiss, is exposed for 400 km across the Yukon-Tanana terrain. Chemical, textural, and isotopic data from large augen-gneiss bodies indicate that these bodies originated as early Mississippian granitic rocks that assimilated, or were anatectically derived from, early Proterozoic crust or metasedimentary rocks. This plutonic belt probably formed in a middle Palaeozoic continental magmatic arc that developed near the edge of a Precambrian craton somewhere along the western margin of North America and was later translated NW to its present location. U/Pb zircon data and concordance of augen-gneiss contacts with metamorphic layering and with probable late-stage sills suggest that regional metamorphism to amphibolite facies of these rocks was synchronous (late kinematic) with intrusion of the porphyritic granitic protolith. -L.di H.","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1985)96<411:PATSOA>2.0.CO;2","usgsCitation":"Dusel-Bacon, C., and Aleinikoff, J.N., 1985, Petrology and tectonic significance of augen gneiss from a belt of Mississippian granitoids in the Yukon-Tanana terrane, east- central Alaska: Geological Society of America Bulletin, v. 96, no. 4, p. 411-425, https://doi.org/10.1130/0016-7606(1985)96<411:PATSOA>2.0.CO;2.","productDescription":"15 p.","startPage":"411","endPage":"425","numberOfPages":"15","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":220638,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -153.10546875,\n 61.14323525084058\n ],\n [\n -140.9765625,\n 61.14323525084058\n ],\n [\n -140.9765625,\n 66.47820814385636\n ],\n [\n -153.10546875,\n 66.47820814385636\n ],\n [\n -153.10546875,\n 61.14323525084058\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"96","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a782be4b0c8380cd78658","contributors":{"authors":[{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":777788,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aleinikoff, John N. 0000-0003-3494-6841 jaleinikoff@usgs.gov","orcid":"https://orcid.org/0000-0003-3494-6841","contributorId":1478,"corporation":false,"usgs":true,"family":"Aleinikoff","given":"John","email":"jaleinikoff@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":777789,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70012392,"text":"70012392 - 1985 - The McKinley Sequence of granitic rocks: A key element in the accretionary history of southern Alaska","interactions":[],"lastModifiedDate":"2024-06-27T15:44:19.906636","indexId":"70012392","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"The McKinley Sequence of granitic rocks: A key element in the accretionary history of southern Alaska","docAbstract":"The McKinley sequence of granitic rocks consists of several discrete plutons in the central Alaska Range. Most of these plutons crop out south of the Denali fault system (DFS) in the Talkeetna quadrangle. Plutons of the McKinley sequence largely intrude deformed upper Meszoic flysch between the DFS and the northern edges of Wrangellia and the Peninsular terrane, which jointly make up the Talkeetna superterrane. The average K-Ar age of biotite from nine granites of the McKinley sequence is 57.3 Ma; Rb-Sr data for whole rock samples indicate that the McKinley sequence cannot be older than 60 Ma. A selected suite of 20 samples of granite and granodiorite range in SiO2 from 65.9 to 77.6%. All 20 samples are corundum normative, and 18 are moderately peraluminous. Initial 87Sr/86Sr ratios range from 0.7054 to 0.7085. The σ18O values range from +11.2 to +14.6‰. These high and variable Sr isotopic ratios, peraluminous nature, rare earth element patterns, and high σ18O values suggest that granitic rocks of the McKinley sequence crystallized from hybrid magmas produced by assimilation of sedimentary rocks by a mantle-derived melt. Mesozoic flysch is the likely source of the crustal component of the hybrid magmas. Geologic evidence suggests that the Talkeetna superterrane collided with stable Alaska after Early Cretaceous time. The flysch basin, lying south of stable Alaska, was closed by northward movement of the Talkeetna superterrane; maximum age for basin closure and terrane accretion is middle Cretaceous (Cenomanian). Paleomagnetic evidence indicates that all terranes north of the DFS have been part of stable Alaska since the Paleocene and that northward movement of Wrangellia was completed by 50 Ma. Granitic rocks of the McKinley sequence may be products of terrane accretion; the granitic rocks crystallized from hybrid magmas produced during terrane collision and deformation of the flysch basin. Isotopic ages of the McKinley sequence establish the time of final accretion of the Talkeetna superterrane as Paleocene.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB090iB13p11413","issn":"01480227","usgsCitation":"Lanphere, M.A., and Reed, B., 1985, The McKinley Sequence of granitic rocks: A key element in the accretionary history of southern Alaska: Journal of Geophysical Research Solid Earth, v. 90, no. B13, p. 11413-11430, https://doi.org/10.1029/JB090iB13p11413.","productDescription":"18 p.","startPage":"11413","endPage":"11430","costCenters":[],"links":[{"id":222475,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"B13","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505ba7dde4b08c986b321855","contributors":{"authors":[{"text":"Lanphere, M. A.","contributorId":35298,"corporation":false,"usgs":true,"family":"Lanphere","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":363435,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reed, B.L.","contributorId":29434,"corporation":false,"usgs":true,"family":"Reed","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":363434,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70197165,"text":"70197165 - 1985 - The Steens Mountain (Oregon) geomagnetic polarity transition: 1. Directional history, duration of episodes, and rock magnetism","interactions":[],"lastModifiedDate":"2018-05-18T14:30:24","indexId":"70197165","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"The Steens Mountain (Oregon) geomagnetic polarity transition: 1. Directional history, duration of episodes, and rock magnetism","docAbstract":"The thick sequence of Miocene lava flows exposed on Steens Mountain in southeastern Oregon is well known for containing a detailed record of a reversed‐to‐normal geomagnetic polarity transition. Paleomagnetic samples were obtained from the sequence for a combined study of the directional and intensity variations recorded; the paleointensity study is reported in a companion paper. This effort has resulted in the first detailed history of total geomagnetic field behavior during a reversal of polarity. A comparison of the directional variation history of the reversed and normal polarity intervals on either side of the transition with the Holocene record has allowed an estimate of the duration of these periods to be made. These time estimates were then used to calculate accumulation rates for the volcanic sequence and thereby provide a means for estimating time periods within the transition itself. The polarity transition was found to consist of two phases, each with quite different characteristics. At the onset of the first phase, a one‐third decrease in magnetic field intensity may have preceded the first intermediate field directions by about 600 years. Changes in field direction were confined near the local north‐south vertical plane when the actual reversal in direction occurred and normal polarity directions may have been attained within 550±150 years. The end of the first phase of the transition was marked by a brief (possibly 100–300 years) period with normal polarity and a pretransitional intensity which suggests a quasi‐normal dipole field structure existed during this interval. The second phase of the transition was characterized by a return to very low field intensities with the changes in direction describing a long counterclockwise loop in contrast to the earlier narrowly constrained changes. This second phase lasted 2900±300 years, and both normal directions and intensities were recovered at the same time. Both directional and intensity data document very erratic geomagnetic field behavior during the polarity transition. Changes in magnetic field direction were variable and occurred either (1) in a regular, progressive manner, (2) with sudden, extremely rapid angular changes (58°±21°/year), or (3) with little or no movement for periods of the order of 600±200 years. Changes in magnetic intensity occurred in a like manner and were sometimes correlated with changes in direction, but during other periods both directional and intensity changes occurred independently. Directional changes following the polarity transition occurred in a seemingly normal manner, although intensity fluctuations attest to some instability of the newly reestablished dipole.
","language":"English","publisher":"AGU","doi":"10.1029/JB090iB12p10393","usgsCitation":"Mankinen, E.A., Prevot, M., Gromme, C.S., and Coe, R.S., 1985, The Steens Mountain (Oregon) geomagnetic polarity transition: 1. Directional history, duration of episodes, and rock magnetism: Journal of Geophysical Research B: Solid Earth, v. 90, no. B12, p. 10393-10416, https://doi.org/10.1029/JB090iB12p10393.","productDescription":"24 p.","startPage":"10393","endPage":"10416","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":354332,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5aff3a76e4b0da30c1bfd9fb","contributors":{"authors":[{"text":"Mankinen, Edward A. 0000-0001-7496-2681 emank@usgs.gov","orcid":"https://orcid.org/0000-0001-7496-2681","contributorId":1054,"corporation":false,"usgs":true,"family":"Mankinen","given":"Edward","email":"emank@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":735880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prevot, M.","contributorId":75679,"corporation":false,"usgs":true,"family":"Prevot","given":"M.","email":"","affiliations":[],"preferred":false,"id":735881,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gromme, C. Sherman","contributorId":22236,"corporation":false,"usgs":true,"family":"Gromme","given":"C.","email":"","middleInitial":"Sherman","affiliations":[],"preferred":false,"id":735882,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coe, Robert S.","contributorId":20477,"corporation":false,"usgs":true,"family":"Coe","given":"Robert","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":735883,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70197164,"text":"70197164 - 1985 - The Steens Mountain (Oregon) geomagnetic polarity transition, 2. Field intensity variations and discussion of reversal models","interactions":[],"lastModifiedDate":"2018-05-18T14:26:27","indexId":"70197164","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"The Steens Mountain (Oregon) geomagnetic polarity transition, 2. Field intensity variations and discussion of reversal models","docAbstract":"We carried out an extensive paleointensity study of the 15.5±0.3 m.y. Miocene reversed‐to‐normal polarity transition recorded in lava flows from Steens Mountain (south central Oregon). One hundred eighty‐five samples from the collection whose paleodirectional study is reported by Mankinen et al. (this issue) were chosen for paleointensity investigations because of their low viscosity index, high Curie point and reversibility, or near reversibility, of the strong field magnetization curve versus temperature. Application of the Thellier stepwise double heating method was very successful, yielding 157 usable paleointensity estimates corresponding to 73 distinct lava flows. After grouping successive lava flows that did not differ significantly in direction and intensity, we obtained 51 distinguishable, complete field vectors of which 10 are reversed, 28 are transitional, and 13 are normal. The record is complex, quite unlike that predicted by simple flooding or standing nondipole field models. It begins with an estimated several thousand years of reversed polarity with an average intensity of 31.5±8.5 μT, about one third lower than the expected Miocene intensity. This difference is interpreted as a long‐term reduction of the dipole moment prior to the reversal. When site directions and intensities are considered, truly transitional directions and intensities appear almost at the same time at the beginning of the transition, and they disappear simultaneously at the end of the reversal. Large deviations in declination occur during this approximately 4500±1000 year transition period that are compatible with roughly similar average magnitudes of zonal and nonzonal field components at the site. The transitional intensity is generally low, with an average of 10.9±4.9 μT for directions more than 45° away from the dipole field and a minimum of about 5 μT. The root‐mean‐square of the three field components X, Y, and Z are of the same order of magnitude for the transitional field and the historical nondipole field at the site latitude. However, a field intensity increase to pretransitional values occurs when the field temporarily reaches normal directions, which suggests that dipolar structure could have been briefly regenerated during the transition in an aborted attempt to reestablish a stationary field. Changes in the field vector are progressive but jerky, with at least two, and possibly three, large swings at astonishingly high rates. Each of those transitional geomagnetic impulses occurs when the field intensity is low (less than 10 μT) and is followed by an interval of directional stasis during which the magnitude of the field increases greatly. For the best documented geomagnetic impulse the rapid directional change corresponds to a vectorial intensity change of 6700±2700 nT yr−1, which is about 15–50 times larger than the maximum rate of change of the nondipole field observed during the last centuries. The occurrence of geomagnetic impulses seems to support reversal models assuming an increase in the level of turbulence within the liquid core during transitions. The record closes with an estimated several thousand years of normal polarity with an average intensity of 46.7±20.1 μT, agreeing with the expected Miocene value. However, the occurrence of rather large and apparently rapid intensity fluctuations accompanied by little change in direction suggests that the newly reestablished dipole was still somewhat unstable.
","language":"English","publisher":"AGU","doi":"10.1029/JB090iB12p10417","usgsCitation":"Prevot, M., Mankinen, E.A., Coe, R.S., and Gromme, C.S., 1985, The Steens Mountain (Oregon) geomagnetic polarity transition, 2. Field intensity variations and discussion of reversal models: Journal of Geophysical Research B: Solid Earth, v. 90, no. B12, p. 10417-10448, https://doi.org/10.1029/JB090iB12p10417.","productDescription":"32 p.","startPage":"10417","endPage":"10448","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":354331,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5aff3a76e4b0da30c1bfd9fd","contributors":{"authors":[{"text":"Prevot, M.","contributorId":75679,"corporation":false,"usgs":true,"family":"Prevot","given":"M.","email":"","affiliations":[],"preferred":false,"id":735876,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mankinen, Edward A. 0000-0001-7496-2681 emank@usgs.gov","orcid":"https://orcid.org/0000-0001-7496-2681","contributorId":1054,"corporation":false,"usgs":true,"family":"Mankinen","given":"Edward","email":"emank@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":735877,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coe, Robert S.","contributorId":20477,"corporation":false,"usgs":true,"family":"Coe","given":"Robert","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":735878,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gromme, C. Sherman","contributorId":22236,"corporation":false,"usgs":true,"family":"Gromme","given":"C.","email":"","middleInitial":"Sherman","affiliations":[],"preferred":false,"id":735879,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70013331,"text":"70013331 - 1985 - Impulsive radon emanation on a creeping segment of the San Andreas fault, California","interactions":[],"lastModifiedDate":"2012-03-12T17:18:17","indexId":"70013331","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3209,"text":"Pure and Applied Geophysics PAGEOPH","active":true,"publicationSubtype":{"id":10}},"title":"Impulsive radon emanation on a creeping segment of the San Andreas fault, California","docAbstract":"Radon emanation was continuously monitored for several months at two locations along a creeping segment of the San Andreas fault in central California. The recorded emanations showed several impulsive increases that lasted as much as five hours with amplitudes considerably larger than meteorologically induced diurnal variations. Some of the radon increases were accompanied or followed by earthquakes or fault-creep events. They were possibly the result of some sudden outbursts of relatively radon-rich ground gas, sometimes triggered by crustal deformation or vibration. ?? 1985 Birkha??user Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pure and Applied Geophysics PAGEOPH","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Birkha??user-Verlag","doi":"10.1007/BF00874603","issn":"00334553","usgsCitation":"King, C., 1985, Impulsive radon emanation on a creeping segment of the San Andreas fault, California: Pure and Applied Geophysics PAGEOPH, v. 122, no. 2-4, p. 340-352, https://doi.org/10.1007/BF00874603.","startPage":"340","endPage":"352","numberOfPages":"13","costCenters":[],"links":[{"id":204970,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00874603"},{"id":219794,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"122","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3983e4b0c8380cd61953","contributors":{"authors":[{"text":"King, C.-Y.","contributorId":81225,"corporation":false,"usgs":true,"family":"King","given":"C.-Y.","affiliations":[],"preferred":false,"id":365826,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013385,"text":"70013385 - 1985 - STREAMFLOW LOSSES IN THE SANTA CRUZ RIVER, ARIZONA.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:17","indexId":"70013385","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"STREAMFLOW LOSSES IN THE SANTA CRUZ RIVER, ARIZONA.","docAbstract":"The discharge and volume of flow in a peak decrease as the peak moves through an 89-mile (143 km) reach of the Santa Cruz River. An average of three peaks per year flow the length of the reach. Of 17,500 acre-ft (21,600 dam**3) that entered the upstream end of the reach, 2300 acre-ft (2,840 dam**3), 13 percent of the inflow, left the reach as streamflow. The remainder was lost through infiltration. Losses in a reach of channel were estimated by relating losses to the discharge at the upstream end of the reach. Tributary inflow was estimated through the use of synthesized duration curves. Streamflow losses along mountain fronts were estimated through the use of an electric analog model and by relating losses shown by the model to the median altitude of the contributing area.","conferenceTitle":"Development and Management Aspects of Irrigation and Drainage Systems.","conferenceLocation":"San Antonio, TX, USA","language":"English","publisher":"ASCE","publisherLocation":"New York, NY, USA","isbn":"0872624722","usgsCitation":"Aldridge, B.N., 1985, STREAMFLOW LOSSES IN THE SANTA CRUZ RIVER, ARIZONA., Development and Management Aspects of Irrigation and Drainage Systems., San Antonio, TX, USA, p. 75-83.","startPage":"75","endPage":"83","numberOfPages":"9","costCenters":[],"links":[{"id":219852,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaf96e4b0c8380cd8768e","contributors":{"authors":[{"text":"Aldridge, B. N.","contributorId":73179,"corporation":false,"usgs":true,"family":"Aldridge","given":"B.","middleInitial":"N.","affiliations":[],"preferred":false,"id":365949,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013125,"text":"70013125 - 1985 - Hydrocarbon source rock evaluation of Middle Proterozoic Solor Church Formation, North American Mid-Continent Rift System, Rice County, Minnesota","interactions":[],"lastModifiedDate":"2023-01-12T17:08:59.798288","indexId":"70013125","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Hydrocarbon source rock evaluation of Middle Proterozoic Solor Church Formation, North American Mid-Continent Rift System, Rice County, Minnesota","docAbstract":"Hydrocarbon source rock evaluation of the Middle Proterozoic Solor Church Formation (Keweenawan Supergroup) as sampled in the Lonsdale 65-1 well, Rice County, Minnesota, shows that: (1) the rocks are organic matter lean (24 of 25 samples have less than 0.8% organic carbon); (2) the organic matter is thermally post-mature, probably near the transition between the wet gas phase of catagenesis and metagenesis (dry gas zone); and (3) the rocks have minimal potential for producing additional hydrocarbons (genetic potential < 0.30 mg HC/g rock). Although no direct evidence exists from which to determine maximum burial depths, the observed thermal maturity of the organic matter requires significantly greater burial depths, a higher geothermal gradient, or both. It is likely, t least on the Saint Croix horst, that thermal maturation of the organic matter in the Solor Church took place relatively early, and that any hydrocarbons generated during this early phase were probably lost prior to deposition of the overlying Middle Proterozoic Fond du Lac Formation (Keweenawan Supergroup).
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\"}}]}","volume":"87","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a5cd","contributors":{"authors":[{"text":"Blus, L. J.","contributorId":38116,"corporation":false,"usgs":true,"family":"Blus","given":"L.","middleInitial":"J.","affiliations":[],"preferred":false,"id":323188,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Henny, Charles J. 0000-0001-7474-350X hennyc@usgs.gov","orcid":"https://orcid.org/0000-0001-7474-350X","contributorId":3461,"corporation":false,"usgs":true,"family":"Henny","given":"Charles","email":"hennyc@usgs.gov","middleInitial":"J.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":323187,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krynitsky, A. J.","contributorId":73954,"corporation":false,"usgs":true,"family":"Krynitsky","given":"A.","middleInitial":"J.","affiliations":[],"preferred":false,"id":323189,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013384,"text":"70013384 - 1985 - AQUATIC PHOTOLYSIS OF OXY-ORGANIC COMPOUNDS ADSORBED ON GOETHITE.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:17","indexId":"70013384","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"AQUATIC PHOTOLYSIS OF OXY-ORGANIC COMPOUNDS ADSORBED ON GOETHITE.","docAbstract":"Organic materials that will not absorb light at wavelengths longer than 295 nanometers (the solar wavelength cutoff) may nevertheless, undergo electron transfer reactions initiated by light. These reactions occur when the organic materials are adsorbed as ligand complexes to the surface of iron oxy-hydroxide (goethite). The adsorbed materials can be either inner or outer coordination sphere complexes. Goethite was chosen as the iron oxyhydroxide surface because it has the highest thermodynamic stability of any of the oxyhydroxides in water and it can be synthesized easily, with high purity.","largerWorkTitle":"National Meeting - American Chemical Society, Division of Environmental Chemistry","conferenceTitle":"189th National Meeting - American Chemical Society, Division of Environmental Chemistry, Volume 25 Number 1.","conferenceLocation":"Miami, FL, USA","language":"English","publisher":"ACS","publisherLocation":"Washington, DC, USA","issn":"02703009","usgsCitation":"Goldberg, M.C., 1985, AQUATIC PHOTOLYSIS OF OXY-ORGANIC COMPOUNDS ADSORBED ON GOETHITE., in National Meeting - American Chemical Society, Division of Environmental Chemistry, v. 25, no. 1, Miami, FL, USA, p. 317-320.","startPage":"317","endPage":"320","numberOfPages":"4","costCenters":[],"links":[{"id":219851,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e633e4b0c8380cd4723d","contributors":{"authors":[{"text":"Goldberg, Marvin C.","contributorId":26066,"corporation":false,"usgs":true,"family":"Goldberg","given":"Marvin","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":365948,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013337,"text":"70013337 - 1985 - INDUCED SEISMICITY MECHANISM AT THE GEYSERS, CALIFORNIA.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:39","indexId":"70013337","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"INDUCED SEISMICITY MECHANISM AT THE GEYSERS, CALIFORNIA.","docAbstract":"Induced microearthquake activity at The Geysers geothermal reservoir is observed in the vicinity of eight geothermal steam power units. The earthquakes do not align with mapped faults but occur adjacent to steam wells. The sense of motion as deduced from focal mechanisms is strike-slip to reverse in the upper 1 km of the reservoir and changes to strike-slip to oblique normal slip at greater depth because of the increased lithostatic load. Below 1 km the reservoir is undergoing horizontal extension. Alignment of P and T axes with the regional stress field suggests that contraction of the reservoir contributes the incremental stress perturbation to the regional stress field and causes microearthquakes.","largerWorkTitle":"Transactions - Geothermal Resources Council","conferenceTitle":"1985 International Symposium on Geothermal Energy. Geothermal Resources Council 1985 Annual Meeting.","conferenceLocation":"Kailua-Kona, HI, USA","language":"English","publisher":"Geothermal Resources Council","publisherLocation":"Davis, CA, USA","issn":"01935933","isbn":"093441260X","usgsCitation":"Oppenheimer, D., 1985, INDUCED SEISMICITY MECHANISM AT THE GEYSERS, CALIFORNIA., in Transactions - Geothermal Resources Council, v. 9, no. pt 2, Kailua-Kona, HI, USA, p. 41-44.","startPage":"41","endPage":"44","numberOfPages":"4","costCenters":[],"links":[{"id":219910,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"pt 2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a37cfe4b0c8380cd611a2","contributors":{"authors":[{"text":"Oppenheimer, David","contributorId":58323,"corporation":false,"usgs":true,"family":"Oppenheimer","given":"David","affiliations":[],"preferred":false,"id":365839,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70013359,"text":"70013359 - 1985 - Hydrologic changes associated with the October 28, 1983, Idaho earthquake","interactions":[],"lastModifiedDate":"2012-03-12T17:18:38","indexId":"70013359","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3209,"text":"Pure and Applied Geophysics PAGEOPH","active":true,"publicationSubtype":{"id":10}},"title":"Hydrologic changes associated with the October 28, 1983, Idaho earthquake","docAbstract":"Significant hydrologic changes were observed after the magnitude 7.3 earthquake that occurred on October 28, 1983, in central Idaho. Groundwater levels rose by as much as 3 meters near the epicenter. Discharge in many streams and springs increased, in some instances by more than 100%. One warm spring ceased flowing for several days; the flow then resumed and peaked at about nine times its original rate. Available data show no significant changes in water quality following the earthquake. ?? 1985 Birkha??user Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Pure and Applied Geophysics PAGEOPH","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Birkha??user-Verlag","doi":"10.1007/BF00874599","issn":"00334553","usgsCitation":"Whitehead, R., Harper, R., and Sisco, H., 1985, Hydrologic changes associated with the October 28, 1983, Idaho earthquake: Pure and Applied Geophysics PAGEOPH, v. 122, no. 2-4, p. 280-293, https://doi.org/10.1007/BF00874599.","startPage":"280","endPage":"293","numberOfPages":"14","costCenters":[],"links":[{"id":205022,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00874599"},{"id":220249,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"122","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3577e4b0c8380cd5ff40","contributors":{"authors":[{"text":"Whitehead, R.L.","contributorId":34891,"corporation":false,"usgs":true,"family":"Whitehead","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":365895,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harper, R.W.","contributorId":36104,"corporation":false,"usgs":true,"family":"Harper","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":365896,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sisco, H.G.","contributorId":54185,"corporation":false,"usgs":true,"family":"Sisco","given":"H.G.","email":"","affiliations":[],"preferred":false,"id":365897,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013336,"text":"70013336 - 1985 - U. S. G. S. MODULAR GROUND-WATER FLOW MODEL: DESIGNED TO BE UNDERSTOOD AND ADAPTED.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:39","indexId":"70013336","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"U. S. G. S. MODULAR GROUND-WATER FLOW MODEL: DESIGNED TO BE UNDERSTOOD AND ADAPTED.","docAbstract":"The paper discusses a carefully designed model program and its complementary complete description of all of the physical and mathematical concepts used in the model. The model program consists of a series of independent subroutines called modules. Modules are grouped by hydrologic function into 'packages. ' A report describing the model was written in three levels. At one level the hydrologic concepts on which the model is based are explained. The second level describes how the concepts were incorporated into the program. The third level describes specific modules in sufficient depth to permit modifications to the model.","conferenceTitle":"Hydraulics and Hydrology in the Small Computer Age, Proceedings of the Specialty Conference.","conferenceLocation":"Lake Buena Vista, FL, USA","language":"English","publisher":"ASCE","publisherLocation":"New York, NY, USA","isbn":"0872624749","usgsCitation":"McDonald, M.G., and Harbaugh, A.W., 1985, U. S. G. S. MODULAR GROUND-WATER FLOW MODEL: DESIGNED TO BE UNDERSTOOD AND ADAPTED., Hydraulics and Hydrology in the Small Computer Age, Proceedings of the Specialty Conference., Lake Buena Vista, FL, USA, p. 1225-1230.","startPage":"1225","endPage":"1230","numberOfPages":"6","costCenters":[],"links":[{"id":219909,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb9e5e4b08c986b327eb8","contributors":{"authors":[{"text":"McDonald, Michael G.","contributorId":47352,"corporation":false,"usgs":true,"family":"McDonald","given":"Michael","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":365838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harbaugh, Arlen W. harbaugh@usgs.gov","contributorId":426,"corporation":false,"usgs":true,"family":"Harbaugh","given":"Arlen","email":"harbaugh@usgs.gov","middleInitial":"W.","affiliations":[],"preferred":true,"id":365837,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70013400,"text":"70013400 - 1985 - RECOVERY OF MONTEREY BAY BEACHES AFTER THE WINTER STORMS OF 1982-83.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:36","indexId":"70013400","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"RECOVERY OF MONTEREY BAY BEACHES AFTER THE WINTER STORMS OF 1982-83.","docAbstract":"The El Nino conditions of 1982 and 1983 produced unusually frequent and intense storms along the central California coast. These storms produced much greater than normal beach erosion in Monterey Bay, causing extensive damage to coastal structures, erosion of coastal cliffs, and loss of sand from coastal dunes. The beaches accreted during the summer of 1983 and eroded again the next winter. Every beach, however, showed its own pattern of rebuilding; the eigenfunction analysis showed that the beaches did not all reach either their maximum or minimum volumes at the same time.","largerWorkTitle":"Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management","conferenceTitle":"Coastal Zone '85, Proceedings of the Fourth Symposium on Coastal and Ocean Management.","conferenceLocation":"Baltimore, MD, USA","language":"English","publisher":"ASCE","publisherLocation":"New York, NY, USA","isbn":"0872624730","usgsCitation":"Dingler, J.R., Anima, R.J., and Clifton, H.E., 1985, RECOVERY OF MONTEREY BAY BEACHES AFTER THE WINTER STORMS OF 1982-83., in Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management, v. 2, Baltimore, MD, USA, p. 1295-1313.","startPage":"1295","endPage":"1313","numberOfPages":"19","costCenters":[],"links":[{"id":220037,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9336e4b0c8380cd80c9f","contributors":{"authors":[{"text":"Dingler, John R.","contributorId":55795,"corporation":false,"usgs":true,"family":"Dingler","given":"John","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":365988,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anima, Roberto J.","contributorId":32499,"corporation":false,"usgs":true,"family":"Anima","given":"Roberto","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":365986,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Clifton, H. Edward","contributorId":46503,"corporation":false,"usgs":true,"family":"Clifton","given":"H.","email":"","middleInitial":"Edward","affiliations":[],"preferred":false,"id":365987,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70013329,"text":"70013329 - 1985 - APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:30","indexId":"70013329","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM.","docAbstract":"The U. S. Geological Survey has completed the performance evaluation flight tests of the Aerial Profiling of Terrain System (APTS) and is now performing a series of application tests to determine its effectiveness and efficiency as an earth-science data collection tool. These tests are designed to evaluate the APTS at such tasks as positioning water wells, testing reliability of older maps, measuring elevations of kettle ponds, and profiling stream valleys for flood studies. The results of three application tests in Massachusetts are discussed: positioning water wells and measuring elevations along the Charles River; testing four older 1:24,000-scale quadrangle maps in the Plymouth area; and measuring elevations of several hundred kettle ponds near the Cape Cod Canal.","largerWorkTitle":"Technical Papers of the American Congress of Surveying and Mapping","conferenceTitle":"Technical Papers, 45th Annual Meeting - ACSM: Theodolite to Satellite. Papers presented at the 1985 ASP-ACSM Convention (American Society of Photogrammetry).","conferenceLocation":"Washington, DC, USA","language":"English","publisher":"American Congress on Surveying & Mapping","publisherLocation":"Falls Church, VA, USA","issn":"07483244","usgsCitation":"Cyran, E.J., 1985, APPLICATION OF THE AERIAL PROFILING OF TERRAIN SYSTEM., in Technical Papers of the American Congress of Surveying and Mapping, Washington, DC, USA.","startPage":"498","costCenters":[],"links":[{"id":220641,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e631e4b0c8380cd47229","contributors":{"authors":[{"text":"Cyran, Edward J.","contributorId":75156,"corporation":false,"usgs":true,"family":"Cyran","given":"Edward","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":365823,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012717,"text":"70012717 - 1985 - Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.)","interactions":[],"lastModifiedDate":"2024-02-24T01:22:31.937542","indexId":"70012717","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Paleoclimate controls on late paleozoic sedimentation and peat formation in the central appalachian basin (U.S.A.)","docAbstract":"In the central Appalachian basin, at least two major climate changes affected sedimentation during the late Paleozoic. Stratigraphically, these two changes are indicated by the distribution of coal beds, the variation in coal quality, and the variation in rock lithologies. In latest Mississippian or earliest Pennsylvanian time, the climate changed from dry-seasonal tropical to ever-wet (equable) tropical. The equable climate prevailed into the Middle Pennsylvanian, influencing the morphology and geochemistry in peat-forming environments. Many of the peat deposits, which formed under the equable climate, were probably domed (raised bogs); low concentrations of dissolved solids in peat formation water resulted in low buffering capacity. Organic acids caused acidic (pH < 4), antiseptic conditions that resulted in intense leaching of mineral matter, minimal degradation of organic matter, and low-ash and low-sulfur peat deposits; the resulting coal beds are also low in ash and sulfur. Associated rocks are noncalcareous and consist of sequences of interbedded shale, siltstone, and sandstone including quartz arenite.
Another climate change occurred in late Middle Pennsylvanian time when evapopation periodically exceeded rainfall resulting in an increase of both dissolved solids and pH (4 to ∼ 7) in surface and near-surface water. Throughout the remainder of the Pennsylvanian, the surfaces of peat deposits were probably planar (not domed); water in peat-forming and other depositional environments became more nearly neutral. The coal beds derived from these peats are highly variable in both ash and sulfur contents. Drier or more seasonal climates are also indicated by sequences of (1) calcareous sandstone and shale, (2) nonmarine limestone that shows shallow-water and subaerial exposure features, and (3) calcareous paleosols that have caliche characteristics.
Our data and observations indicate that physical depositional environment models for the origin of coal do not adequately explain variations in mineral matter content and composition in commercial quality coal beds in the central Appalachian basin. Stratigraphic variation in mineral matter in coal beds, and in syngenetic and early diagenetic minerals in rocks associated with the coal beds, appears to be better explained by changes in geochemical conditions of nonmarine sedimentation. Paleoclimate was a principle control on these geochemical conditions.
Body weight, fat, and protein levels of arctic-nesting Sandhill Cranes (Grus canadensis) were measured at several locations during spring migration and on the breeding grounds. Body weights of adult males and females increased by about 34% (1,129 g) and 30% (953 g) from early March at the Platte River to late April at Last Mountain Lake, Saskatchewan; average fat content increased from about 250 to 990 g. Rates of weight gain and fat deposition among males and females averaged 25-18 and 16-13 g/day. Body weights and fat content of cranes staging along the North Platte River followed similar patterns and usually were higher than along the Platte River during comparable periods. Fat reserves of paired cranes collected after their arrival at a major breeding ground on the Yukon-Kuskokwim Delta in western Alaska averaged about 530 g, or about 46% less than peak fat content in Saskatchewan. Patterns of weight increase and fat deposition in cranes during migration were similar to those previously described for northern-nesting geese, except that nutrient storage is not sex specific in cranes. Body protein of adult female cranes did not change significantly during spring migration (P = 0.28). Female cranes allocate less nutrients to clutch formation in proportion to body size than do northern-nesting geese.
","language":"English","publisher":"American Ornithological Society","doi":"10.2307/4086780 ","usgsCitation":"Krapu, G., Iverson, G., Reinecke, K.J., and Boise, C., 1985, Fat deposition and usage by arctic-nesting sandhill cranes during spring: The Auk, v. 102, no. 2, p. 362-368, https://doi.org/10.2307/4086780 .","productDescription":"7 p.","startPage":"362","endPage":"368","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133806,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"102","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e499ee4b07f02db5bc898","contributors":{"authors":[{"text":"Krapu, Gary L.","contributorId":56994,"corporation":false,"usgs":true,"family":"Krapu","given":"Gary L.","affiliations":[],"preferred":false,"id":311218,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Iverson, G.C.","contributorId":30590,"corporation":false,"usgs":true,"family":"Iverson","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":311215,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reinecke, K. J.","contributorId":54537,"corporation":false,"usgs":true,"family":"Reinecke","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":311217,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boise, C.M.","contributorId":31723,"corporation":false,"usgs":true,"family":"Boise","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":311216,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70168844,"text":"70168844 - 1985 - Earthquakes March-April 1985","interactions":[],"lastModifiedDate":"2016-03-24T15:40:15","indexId":"70168844","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Earthquakes March-April 1985","docAbstract":"There were two major earthquakes (7.0-7.9) during this reporting period-both were in Chile and both caused fatalities. Earthquake-related deaths were also reported from the Philippine Islands, Bolivia, and China.
\nIn the United States a strong earthquake occurred in Alaska on March 9 and a magntidue 6.3 earthquake occurred off the coast of Oregon on March 13.
","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1985, Earthquakes March-April 1985: Earthquake Information Bulletin (USGS), v. 17, no. 5, p. 193-198.","productDescription":"6 p.","startPage":"193","endPage":"198","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318591,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56dabfc2e4b015c306f84c2e","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":621974,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70135866,"text":"70135866 - 1985 - Deep continental margin reflectors","interactions":[],"lastModifiedDate":"2017-08-24T13:03:05","indexId":"70135866","displayToPublicDate":"1985-01-01T00:00:00","publicationYear":"1985","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Deep continental margin reflectors","docAbstract":"In contrast to the rarity of such observations a decade ago, seismic reflecting and refracting horizons are now being observed to Moho depths under continental shelves in a number of places. These observations provide knowledge of the entire crustal thickness from the shoreline to the oceanic crust on passive margins and supplement Consortium for Continental Reflection Profiling (COCORP)-type measurements on land.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO066i020p00448","usgsCitation":"Ewing, J., Heirtzler, J., Purdy, M., and Klitgord, K.D., 1985, Deep continental margin reflectors: Eos, Transactions, American Geophysical Union, v. 66, no. 20, p. 448-448, https://doi.org/10.1029/EO066i020p00448.","productDescription":"1 p.","startPage":"448","endPage":"448","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":296780,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"20","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"54dd2b6ee4b08de9379b338a","contributors":{"authors":[{"text":"Ewing, J.","contributorId":131014,"corporation":false,"usgs":false,"family":"Ewing","given":"J.","email":"","affiliations":[{"id":6706,"text":"Woods Hole Oceanographic Institution,","active":true,"usgs":false}],"preferred":false,"id":536937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heirtzler, J.","contributorId":131016,"corporation":false,"usgs":false,"family":"Heirtzler","given":"J.","email":"","affiliations":[{"id":6706,"text":"Woods Hole Oceanographic Institution,","active":true,"usgs":false}],"preferred":false,"id":536938,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Purdy, M.","contributorId":131017,"corporation":false,"usgs":false,"family":"Purdy","given":"M.","email":"","affiliations":[{"id":6706,"text":"Woods Hole Oceanographic Institution,","active":true,"usgs":false}],"preferred":false,"id":536939,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Klitgord, Kim D.","contributorId":82307,"corporation":false,"usgs":true,"family":"Klitgord","given":"Kim","email":"","middleInitial":"D.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":536940,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}