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,{"id":2002177,"text":"2002177 - 1984 - Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument I","interactions":[],"lastModifiedDate":"2012-02-02T00:14:55","indexId":"2002177","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":91,"text":"Technical Report","active":true,"publicationSubtype":{"id":1}},"seriesNumber":"CPSU/UNLV 006/30","title":"Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument I","docAbstract":"No abstract available at this time","language":"English","publisher":"National Park Service","usgsCitation":"Douglas, C.L., and Sanchez, P., 1984, Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument I: Technical Report CPSU/UNLV 006/30, 6 p.","productDescription":"6 p.","startPage":"0","endPage":"6","numberOfPages":"6","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":198502,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e4015","contributors":{"authors":[{"text":"Douglas, C. L.","contributorId":64586,"corporation":false,"usgs":true,"family":"Douglas","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":326115,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanchez, P.G.","contributorId":51678,"corporation":false,"usgs":true,"family":"Sanchez","given":"P.G.","email":"","affiliations":[],"preferred":false,"id":326114,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013794,"text":"70013794 - 1984 - Deformation of clinopyroxenite: Evidence for a transition in flow mechanisms and semibrittle behavior","interactions":[],"lastModifiedDate":"2024-06-27T16:12:36.677414","indexId":"70013794","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","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":"Deformation of clinopyroxenite: Evidence for a transition in flow mechanisms and semibrittle behavior","docAbstract":"A systematic suite of constant strain rate experiments was performed on a vacuum-dried, high-purity, fine-grained clinopyroxenite using NaCl and NaF as confining media in a Griggs-type piston-cylinder apparatus. The experiments were carried out over a range of temperatures from 400° to 1100°C, strain rates from 10−3 to 10−7 s−1, and confining pressures from 170 to 1990 MPa. At T = 600°C and ![\"urn:x-wiley:01480227:media:jgrb4737:grb4737-math-0001\"](\"https://agupubs.onlinelibrary.wiley.com/cms/asset/4d5ec8f9-7c50-4032-a1dc-295d1c66c0c4/grb4737-math-0001.gif\")
= 1.1 × 10−5 s−1, three modes of deformation occur with increasing confining pressure: (1) Macroscopic faulting associated with low strength and stress drops, (2) stable microfracturing and plastic deformation associated with pressure-dependent strength, and (3) plastic deformation (mechanical twinning and 〈001〉 slip) with high strengths which are insensitive to pressure variations. In experiments at P = 1500 MPa, within this high-pressure plastic mode, two regimes of flow are clearly defined. At low to intermediate temperatures and high strain rates, flow strengths are insensitive to changes in strain rate and temperature. Optical and transmission electron microscope observations indicate that plastic strain is accomplished by mechanical twinning on (100) and (001) and by {100}〈001〉 slip. In contrast, at high temperatures and low strain rates the flow stress is strongly dependent on temperature and strain rate. Specimens deformed in this regime show evidence of recovery, multiple slip, and recrystallization; and plastic strain is much more homogeneous. The flow data within each regime can be satisfactorily fit to thermally activated power laws. In the low-temperature regime n (the stress exponent) = 83 ± 16 and E* (the activation energy for flow) = 220 ± 40 kJ/mol. We believe that these parameters reflect flow dominated by the kinetics of dislocation glide associated with mechanical twinning and (100)〈001〉 slip. In the high-temperature regime, n = 5.3 ± 1.1 and E* = 380 ± 30 kJ/mol. These parameters describe creep by multiple slip accompanied by increased rates of diffusion and recovery.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB089iB05p03177","issn":"01480227","usgsCitation":"Kirby, S.H., and Kronenberg, A.K., 1984, Deformation of clinopyroxenite: Evidence for a transition in flow mechanisms and semibrittle behavior: Journal of Geophysical Research Solid Earth, v. 89, no. B5, p. 3177-3192, https://doi.org/10.1029/JB089iB05p03177.","productDescription":"16 p.","startPage":"3177","endPage":"3192","numberOfPages":"16","costCenters":[],"links":[{"id":220395,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"B5","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059fe49e4b0c8380cd4ec3f","contributors":{"authors":[{"text":"Kirby, S. H.","contributorId":51721,"corporation":false,"usgs":true,"family":"Kirby","given":"S.","middleInitial":"H.","affiliations":[],"preferred":false,"id":366882,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kronenberg, A. K.","contributorId":94787,"corporation":false,"usgs":false,"family":"Kronenberg","given":"A.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":366883,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":2002178,"text":"2002178 - 1984 - Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument II","interactions":[],"lastModifiedDate":"2012-02-02T00:14:55","indexId":"2002178","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":91,"text":"Technical Report","active":true,"publicationSubtype":{"id":1}},"seriesNumber":"CPSU/UNLV 006/31","title":"Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument II","docAbstract":"No abstract available at this time","language":"English","publisher":"National Park Service","usgsCitation":"Douglas, C.L., and Sanchez, P., 1984, Wildlife census in the southern Cottonwood Mountains, Death Valley National Monument II: Technical Report CPSU/UNLV 006/31, 4 p.","productDescription":"4 p.","startPage":"0","endPage":"4","numberOfPages":"4","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":198503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e3f9a","contributors":{"authors":[{"text":"Douglas, C. L.","contributorId":64586,"corporation":false,"usgs":true,"family":"Douglas","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":326117,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanchez, P.G.","contributorId":51678,"corporation":false,"usgs":true,"family":"Sanchez","given":"P.G.","email":"","affiliations":[],"preferred":false,"id":326116,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":5221939,"text":"5221939 - 1984 - Molybdenum and copper levels in white-tailed deer near uranium mines in Texas","interactions":[],"lastModifiedDate":"2024-11-06T15:19:10.764751","indexId":"5221939","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Molybdenum and copper levels in white-tailed deer near uranium mines in Texas","docAbstract":"No abstract available.
","language":"English","publisher":"Wiley","doi":"10.2307/3808486","usgsCitation":"King, K.A., LeLeux, J., and Mulhern, B.M., 1984, Molybdenum and copper levels in white-tailed deer near uranium mines in Texas: Journal of Wildlife Management, v. 48, no. 1, p. 267-270, https://doi.org/10.2307/3808486.","productDescription":"4 p.","startPage":"267","endPage":"270","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":193500,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","county":"Atascosa County, Karnes County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-98.4083,29.1104],[-98.2809,28.9878],[-98.1879,28.8807],[-97.7292,29.224],[-97.6145,29.1096],[-97.755,29.0056],[-97.5693,28.8157],[-97.7706,28.6717],[-97.7743,28.669],[-97.7812,28.6646],[-97.7847,28.6688],[-97.7882,28.6716],[-97.7929,28.6721],[-97.8267,28.6715],[-97.8276,28.6742],[-97.8291,28.6761],[-97.8353,28.679],[-97.8461,28.6824],[-97.8538,28.6839],[-97.859,28.6845],[-97.8637,28.6841],[-97.8641,28.6874],[-97.8682,28.6902],[-97.8795,28.6932],[-97.8913,28.6998],[-97.8954,28.7013],[-97.8975,28.7032],[-97.8995,28.7055],[-97.8989,28.7073],[-97.8999,28.7092],[-97.9035,28.7116],[-97.9127,28.7168],[-97.9189,28.7187],[-98.0037,28.6896],[-98.099,28.7882],[-98.3363,28.6117],[-98.3372,28.6443],[-98.8035,28.645],[-98.8039,29.0884],[-98.8042,29.2513],[-98.4083,29.1104]]]},\"properties\":{\"name\":\"Atascosa\",\"state\":\"TX\"}}]}","volume":"48","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6ae157","contributors":{"authors":[{"text":"King, Kirk A.","contributorId":9203,"corporation":false,"usgs":true,"family":"King","given":"Kirk","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":335082,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"LeLeux, John","contributorId":60731,"corporation":false,"usgs":true,"family":"LeLeux","given":"John","email":"","affiliations":[],"preferred":false,"id":335083,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mulhern, Bernard M.","contributorId":105177,"corporation":false,"usgs":false,"family":"Mulhern","given":"Bernard","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":335084,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":2002847,"text":"2002847 - 1984 - Land use of the Redwood Creek basin","interactions":[],"lastModifiedDate":"2012-02-02T00:14:56","indexId":"2002847","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"seriesTitle":{"id":408,"text":"Redwood National Park","active":false,"publicationSubtype":{"id":9}},"seriesNumber":"9","title":"Land use of the Redwood Creek basin","docAbstract":"No abstract available at this time","language":"English","publisher":"National Park Service, Redwood National Park","publisherLocation":"Arcata, CA","usgsCitation":"Best, D., 1984, Land use of the Redwood Creek basin: Redwood National Park 9, 24 p.; maps.","productDescription":"24 p.; maps","startPage":"0","endPage":"24","costCenters":[],"links":[{"id":199264,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a139","contributors":{"authors":[{"text":"Best, D.","contributorId":39905,"corporation":false,"usgs":true,"family":"Best","given":"D.","affiliations":[],"preferred":false,"id":326775,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":5221932,"text":"5221932 - 1984 - Response of avian communities to herbicide-induced vegetation changes","interactions":[],"lastModifiedDate":"2024-11-06T15:47:14.134138","indexId":"5221932","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Response of avian communities to herbicide-induced vegetation changes","docAbstract":"The relationships between avian communities and herbicide modification of vegetation were analyzed on early-growth clear-cuts in western Oregon that had received phenoxy herbicide treatment 1 or 4 years previously. For both 1 and 4 years post-spray, vegetation development was greater in the third height interval (> 3.0 m) on untreated sites. All measures of vegetative diversity on untreated sites exceeded those on treated sites. Overall density and diversity of birds were similar between treated and untreated sites. Several bird species altered their foraging behavior on treated sites, i.e., birds using deciduous trees increased use of shrubs on treated sites. The primary effect of herbicide application was a reduction in the complexity of vegetation, a condition due primarity to the removal of deciduous trees. Small patches of deciduous trees scattered in clear-cuts treated with phenoxy herbicides can maintain an avian community similar to that on untreated sites.","language":"English","publisher":"Wiley","doi":"10.2307/3808449","usgsCitation":"Morrison, M.L., and Meslow, E.C., 1984, Response of avian communities to herbicide-induced vegetation changes: Journal of Wildlife Management, v. 48, no. 1, p. 14-22, https://doi.org/10.2307/3808449.","productDescription":"9 p.","startPage":"14","endPage":"22","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":193413,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"48","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4fe4b07f02db6283e6","contributors":{"authors":[{"text":"Morrison, Michael L.","contributorId":169013,"corporation":false,"usgs":false,"family":"Morrison","given":"Michael","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":335061,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meslow, E. Charles","contributorId":75100,"corporation":false,"usgs":true,"family":"Meslow","given":"E.","email":"","middleInitial":"Charles","affiliations":[],"preferred":false,"id":335060,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":87304,"text":"87304 - 1984 - Crassulacean acid metabolism in submerged aquatic plants","interactions":[],"lastModifiedDate":"2017-05-11T21:24:56","indexId":"87304","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesTitle":{"id":5394,"text":"Advances in Agricultural Biotechnology","active":false,"publicationSubtype":{"id":24}},"title":"Crassulacean acid metabolism in submerged aquatic plants","docAbstract":"CO2-fixation in the dark is known to occur in various organs of many plants. However, only in species possessing crassulacean acid metabolism (CAM) does dark CO2-fixation contribute substantially to the carbon economy of the plant. Until very recently CAM was known only from terrestrial species, largely drought adapted succulents. The discovery of CAM in the submerged aquatic fern ally Isoetes howellii (Isoetaceae)(Keeley 1981) adds a new dimension to our understanding of crassulacean acid metabolism. In this paper I will summarize 1) the evidence of CAM in Isoetes howellii, 2) the data on the distribution of CAM in aquatic species, and 3) the work to date on the functional significance of CAM in aquatic species.
Geologic and radiometric-age data indicate that El Chichón was frequently and violently active during the Holocene, including eruptive episodes about 600, 1250, and 1700 years ago and several undated, older eruptions. These episodes, involving explosive eruptions of sulfur-rich magma and associated dome-growth processes, were apparently separated by intervals of approximately 350 to 650 years. Some of El Chichón's eruptions may correlate with unusual atmospheric phenomena around A.D. 1300 and possibly A.D. 623.
","language":"English","publisher":"AAS","doi":"10.1126/science.224.4650.747","issn":"00368075","usgsCitation":"Tilling, R.I., Rubin, M., Sigurdsson, H., Carey, S., Duffield, W.A., and Rose, W.I., 1984, Holocene eruptive activity of El Chichón Volcano, Chiapas, Mexico: Science, v. 224, no. 4650, p. 747-749, https://doi.org/10.1126/science.224.4650.747.","productDescription":"3 p.","startPage":"747","endPage":"749","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":488053,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.uri.edu/gsofacpubs/1117","text":"External Repository"},{"id":220161,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"224","issue":"4650","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a31e1e4b0c8380cd5e2f7","contributors":{"authors":[{"text":"Tilling, Robert I. 0000-0003-4263-7221 rtilling@usgs.gov","orcid":"https://orcid.org/0000-0003-4263-7221","contributorId":2567,"corporation":false,"usgs":true,"family":"Tilling","given":"Robert","email":"rtilling@usgs.gov","middleInitial":"I.","affiliations":[],"preferred":true,"id":366743,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rubin, Meyer","contributorId":107283,"corporation":false,"usgs":true,"family":"Rubin","given":"Meyer","email":"","affiliations":[],"preferred":false,"id":366742,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sigurdsson, Haraldur","contributorId":35079,"corporation":false,"usgs":true,"family":"Sigurdsson","given":"Haraldur","email":"","affiliations":[],"preferred":false,"id":366738,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carey, Steven","contributorId":37978,"corporation":false,"usgs":true,"family":"Carey","given":"Steven","email":"","affiliations":[],"preferred":false,"id":366739,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Duffield, Wendell A.","contributorId":14363,"corporation":false,"usgs":true,"family":"Duffield","given":"Wendell","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":366741,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rose, William I. Jr.","contributorId":71556,"corporation":false,"usgs":true,"family":"Rose","given":"William","suffix":"Jr.","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":366740,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70013729,"text":"70013729 - 1984 - Radon in earth-sheltered structures","interactions":[],"lastModifiedDate":"2012-03-12T17:18:37","indexId":"70013729","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3667,"text":"Underground Space","active":true,"publicationSubtype":{"id":10}},"title":"Radon in earth-sheltered structures","docAbstract":"Radon concentration in the indoor air of six residential and three non-residential earth-sheltered buildings in eastern Colorado was monitored quarterly over a nine-month period using passive, integrating detectors. Average radon concentrations during the three-month sampling periods ranged from about 1 to 9 pCi/L, although one building, a poorly ventilated storage bunker, had concentrations as high as 39 pCi/L. These radon concentrations are somewhat greater than those typically reported for conventional buildings (around 1 pCi/L); but they are of the same order of magnitude as radon concentrations reported for energy-efficient buildings which are not earth-sheltered. ?? 1984.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Underground Space","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03620565","usgsCitation":"Landa, E.R., 1984, Radon in earth-sheltered structures: Underground Space, v. 8, no. 4, p. 264-269.","startPage":"264","endPage":"269","numberOfPages":"6","costCenters":[],"links":[{"id":220160,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9438e4b0c8380cd8128e","contributors":{"authors":[{"text":"Landa, E. R.","contributorId":100002,"corporation":false,"usgs":true,"family":"Landa","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":366737,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013728,"text":"70013728 - 1984 - Origin of epigenetic calcite in coal from Antarctica and Ohio based on isotope compositions of oxygen, carbon and strontium","interactions":[],"lastModifiedDate":"2013-01-21T08:40:59","indexId":"70013728","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","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":"Origin of epigenetic calcite in coal from Antarctica and Ohio based on isotope compositions of oxygen, carbon and strontium","docAbstract":"Isotopic compositions of oxygen, carbon and strontium of calcite cleats in coal seams of southern Victoria Land, Antarctica, and Tuscarawas County, Ohio, contain a record of the conditions a the time of their formation. The Antarctic calcites (?? 18O(SMOW) = +9.14 to +11.82%0) were deposited from waters enriched in 16O whose isotopic composition was consistent with that of meteoric precipitation at low temperature and high latitude. The carbon of the calcite cleats (?? 13C(PDB) = -15.6 to -16.9%0) was derived in part from the coal (?? 13C(PDB) = -23.5 to -26.7%0) as carbon dioxide and by oxidation of methane or other hydrocarbon gases. The strontium ( 87Sr 86Sr = 0.71318-0.72392) originated primarily from altered feldspar grains in the sandstones of the Beacon Supergroup. Calcite cleats in the Kittaning No. 6 coal seam of Ohio (?? 18O(SMOW) = +26.04 to +27.79%0) were deposited from waters that had previously exchanged oxygen, possibly with marine carbonate at depth. The carbon (?? 13C(PDB) = 0.9 to +2.4%0) is enriched in 13C even though that cleats were deposited in coal that is highly enriched in 12C and apparently originated from marine carbonates. Strontium in the cleats ( Sr 87 0.71182-0.71260) is not of marine origin but contains varying amounts of radiogenic 87Sr presumably derived from detrital Rb-bearing minerals in the adjacent sedimentary rocks. The results of this study suggest that calcite cleats in coal of southern Victoria Land, Antarctica, were deposited after the start of glaciation in Cenozoic time and that those in Ohio precipitated from formation waters derived from the underlying marine carbonate rocks, probably in the recent geologic past. ?? 1984.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(84)90174-8","issn":"00092541","usgsCitation":"Faure, G., and Botoman, G., 1984, Origin of epigenetic calcite in coal from Antarctica and Ohio based on isotope compositions of oxygen, carbon and strontium: Chemical Geology, v. 46, no. 4, p. 313-324, https://doi.org/10.1016/0009-2541(84)90174-8.","startPage":"313","endPage":"324","numberOfPages":"12","costCenters":[],"links":[{"id":266107,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(84)90174-8"},{"id":220113,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a70d2e4b0c8380cd7628a","contributors":{"authors":[{"text":"Faure, G.","contributorId":92422,"corporation":false,"usgs":true,"family":"Faure","given":"G.","email":"","affiliations":[],"preferred":false,"id":366735,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Botoman, G.","contributorId":101006,"corporation":false,"usgs":true,"family":"Botoman","given":"G.","email":"","affiliations":[],"preferred":false,"id":366736,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013727,"text":"70013727 - 1984 - Hydrogen isotope systematics of submarine basalts","interactions":[],"lastModifiedDate":"2024-03-19T16:20:38.259739","indexId":"70013727","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","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":"Hydrogen isotope systematics of submarine basalts","docAbstract":"The D/H ratios and water contents in fresh submarine basalts from the Mid-Atlantic Ridge, the East Pacific Rise, and Hawaii indicate that the primary D/H ratios of many submarine lavas have been altered by processes including (1) outgassing, (2) addition of seawater at magmatic temperature, and (3) low-temperature hydration of glass. Decreases in δD and H2O+ from exteriors to interiors of pillows are explained by outgassing of water whereas inverse relations between δD and H2O+ in basalts from the Galapagos Rise and the FAMOUS Area are attributed to outgassing of CH4 and H2. A good correlation between δD values and H2O is observed in a suite of submarine tholeiites dredged from the Kilauea East Rift Zone where seawater (added directly to the magma), affected only the isotopic compositions of hydrogen and argon. Analyses of some glassy rims indicate that the outer millimeter of the glass can undergo lowtemperature hydration by hydroxyl groups having δD values as low as −100.
δD values vary with H2O contents of subaerial transitional basalts from Molokai, Hawaii, and subaerial alkali basalts from the Society Islands, indicating that the primary δD values were similar to those of submarine lavas.
Extrapolations to possible unaltered δD values and H2O contents indicate that the primary δD values of most thoteiite and alkali basalts are near −80 ± 5: the weight percentages of water are variable, 0.15–0.35 for MOR tholeiites, about 0.25 for Hawaiian tholeiites, and up to 1.1 for alkali basalts. The primary δD values of −80 for most basalts are comparable to those measured for deep-seated phlogopites. These results indicate that hydrogen, in marked contrast to other elements such as Sr, Nd, Pb, and O, has a uniform isotopic composition in the mantle. This uniformity is best explained by the presence of a homogeneous reservoir of hydrogen that has existed in the mantle since the very early history of the Earth.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(84)90392-2","issn":"00167037","usgsCitation":"Kyser, T., and O’Neil, J.R., 1984, Hydrogen isotope systematics of submarine basalts: Geochimica et Cosmochimica Acta, v. 48, no. 10, p. 2123-2133, https://doi.org/10.1016/0016-7037(84)90392-2.","productDescription":"11 p.","startPage":"2123","endPage":"2133","numberOfPages":"11","costCenters":[],"links":[{"id":220112,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a334ee4b0c8380cd5eec7","contributors":{"authors":[{"text":"Kyser, T.K.","contributorId":25585,"corporation":false,"usgs":true,"family":"Kyser","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":366733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Neil, J. R.","contributorId":69633,"corporation":false,"usgs":true,"family":"O’Neil","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":366734,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013716,"text":"70013716 - 1984 - Regional investigations of soil and overburden analysis and plant uptake of metals","interactions":[],"lastModifiedDate":"2012-03-12T17:18:39","indexId":"70013716","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2754,"text":"Minerals and the Environment","active":true,"publicationSubtype":{"id":10}},"title":"Regional investigations of soil and overburden analysis and plant uptake of metals","docAbstract":"Regional studies on the bioavailability of metals at native and disturbed sites were conducted over the past seven years by the USGS. The work was concentrated in the Fort Union, Powder River, and Green River coal resource regions where measures of extractable metals in soils were found to have limited use in predicting metal levels in plants. Correlations between Cu, Fe, and Zn in plants and extractable (DTPA, EDTA, and oxalate) or total levels in native A- and C-horizons of soil were occasionally significant. A simple linear model is generally not adequate, however, in estimating element uptake by plants. Prediction capabilities were improved when a number of soil chemical and physical parameters were included as independent variables in a stepwise linear multiple regression analysis; however, never more than 54% of the total variability in the data was explained by the equations for these metals. Soil pH was the most important variable relating soil chemistry to plant chemistry. This relation was always positive and apparently a response to soil levels of metal carbonates and not Fe and Mn oxides. Studies that compared the metal uptake by rehabilitation species to extractable (DTPA) metal levels in mice soils produced similar results. ?? 1984 Science and Technology Letters.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Minerals and the Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF02043989","issn":"01427245","usgsCitation":"Gough, L.P., 1984, Regional investigations of soil and overburden analysis and plant uptake of metals: Minerals and the Environment, v. 6, no. 3, p. 105-110, https://doi.org/10.1007/BF02043989.","startPage":"105","endPage":"110","numberOfPages":"6","costCenters":[],"links":[{"id":204982,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02043989"},{"id":219875,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a534e4b0e8fec6cdbd7f","contributors":{"authors":[{"text":"Gough, L. P.","contributorId":64198,"corporation":false,"usgs":true,"family":"Gough","given":"L.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":366698,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013700,"text":"70013700 - 1984 - The Kingak shale of northern Alaska—regional variations in organic geochemical properties and petroleum source rock quality","interactions":[],"lastModifiedDate":"2025-03-17T16:44:43.862263","indexId":"70013700","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2958,"text":"Organic Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"The Kingak shale of northern Alaska—regional variations in organic geochemical properties and petroleum source rock quality","docAbstract":"The Kingak Shale, a thick widespread rock unit in northern Alaska that ranges in age from Early Jurassic through Early Cretaceous, has adequate to good oil source rock potential. This lenticular-shaped rock unit is as much as 1200 m thick near the Jurassic shelf edge, where its present-day burial depth is about 5000 m. Kingak sediment, transported in a southerly direction, was deposited on the then marine continental shelf. The rock unit is predominantly dark gray Shale with some interbeds of thick sandstone and siltstone.
The thermal maturity of organic matter in the Kingak Shale ranges from immature (<0.6%R0) on the Barrow arch to postmature (>2.0%R0) in the Colville basin toward the south. Its organic carbon and hydrogen contents are highest in the eastern part of northern Alaska south of and around the Kuparuk and Prudhoe Bay oil fields. Carbon isotope data of oils and rock extracts indicate that the Kingak Shale is a source of some North Slope oil, but is probably not the major source.
","language":"English","publisher":"Elsevier","doi":"10.1016/0146-6380(84)90076-7","usgsCitation":"Magoon, L.B., and Claypool, G., 1984, The Kingak shale of northern Alaska—regional variations in organic geochemical properties and petroleum source rock quality: Organic Geochemistry, v. 6, p. 533-542, https://doi.org/10.1016/0146-6380(84)90076-7.","productDescription":"10 p.","startPage":"533","endPage":"542","costCenters":[],"links":[{"id":220497,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"northern Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -163.98696842826936,\n 69.94847907298609\n ],\n [\n -166.6492872958367,\n 68.77233325870091\n ],\n [\n -145.71248264033215,\n 69.39962318192082\n ],\n [\n -141.04972996145256,\n 69.28061812453656\n ],\n [\n -141.3420843077143,\n 69.91408668992455\n ],\n [\n -156.4977076439097,\n 71.42955836169733\n ],\n [\n -160.29783311683522,\n 70.7955991556672\n ],\n [\n -163.98696842826936,\n 69.94847907298609\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba79de4b08c986b3216aa","contributors":{"authors":[{"text":"Magoon, Leslie B. lmagoon@usgs.gov","contributorId":2383,"corporation":false,"usgs":true,"family":"Magoon","given":"Leslie","email":"lmagoon@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":366669,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Claypool, George E.","contributorId":8475,"corporation":false,"usgs":true,"family":"Claypool","given":"George E.","affiliations":[],"preferred":false,"id":366668,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013699,"text":"70013699 - 1984 - Leaching of molybdenum and arsenic from uranium ore and mill tailings","interactions":[],"lastModifiedDate":"2024-01-22T16:24:56.347319","indexId":"70013699","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1930,"text":"Hydrometallurgy","active":true,"publicationSubtype":{"id":10}},"title":"Leaching of molybdenum and arsenic from uranium ore and mill tailings","docAbstract":"A sequential, selective extraction procedure was used to assess the effects of sulfuric acid milling on the geochemical associations of molybdenum and arsenic in a uranium ore blend, and the tailings derived therefrom. The milling process removed about 21% of the molybdenum and 53% of the arsenic initially present in the ore. While about one-half of the molybdenum in the ore was water soluble, only about 14% existed in this form in the tailings. The major portion of the extractable molybdenum in the tailings appears to be associated with hydrous oxides of iron, and with alkaline earth sulfate precipitates. In contrast with the pattern seen for molybdenum, the partitioning of arsenic into the various extractable fractions differs little between the ore and the tailings.
","language":"English","publisher":"Elsevier","doi":"10.1016/0304-386X(84)90027-6","issn":"0304386X","usgsCitation":"Landa, E.R., 1984, Leaching of molybdenum and arsenic from uranium ore and mill tailings: Hydrometallurgy, v. 13, no. 2, p. 203-211, https://doi.org/10.1016/0304-386X(84)90027-6.","productDescription":"9 p.","startPage":"203","endPage":"211","numberOfPages":"9","costCenters":[],"links":[{"id":220496,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a45a0e4b0c8380cd6744d","contributors":{"authors":[{"text":"Landa, E. R.","contributorId":100002,"corporation":false,"usgs":true,"family":"Landa","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":366667,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013686,"text":"70013686 - 1984 - Thermal history determined by fission-track dating for three sedimentary basins in California and Wyoming","interactions":[],"lastModifiedDate":"2013-03-06T20:12:17","indexId":"70013686","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2913,"text":"Nuclear Tracks and Radiation Measurements (1982)","active":true,"publicationSubtype":{"id":10}},"title":"Thermal history determined by fission-track dating for three sedimentary basins in California and Wyoming","docAbstract":"The use of fission-tracks is demonstrated in studies of time-temperature relationships in three sedimentary basins in the western United States; in the Tejon Oil Field area of the southern San Joaquin Valley, California; in the northeastern Green River basin, Wyoming, and in drill holes in the southern Powder River Basin, Wyoming.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nuclear Tracks and Radiation Measurements (1982)","largerWorkSubtype":{"id":10,"text":"Journal Article"},"conferenceTitle":"Fourth Fission-Track Dating Workshop","conferenceLocation":"Troy, NY, USA","language":"English","publisher":"Elsevier","doi":"10.1016/0735-245X(85)90152-8","issn":"0191278X","usgsCitation":"Naeser, N.D., 1984, Thermal history determined by fission-track dating for three sedimentary basins in California and Wyoming: Nuclear Tracks and Radiation Measurements (1982), v. 10, no. 3, https://doi.org/10.1016/0735-245X(85)90152-8.","startPage":"423","costCenters":[],"links":[{"id":268866,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0735-245X(85)90152-8"},{"id":220272,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba388e4b08c986b31fd3e","contributors":{"authors":[{"text":"Naeser, Nancy D.","contributorId":82753,"corporation":false,"usgs":true,"family":"Naeser","given":"Nancy","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":366641,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012790,"text":"70012790 - 1984 - ORIGIN OF QUARTZ IN COAL.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:03","indexId":"70012790","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"ORIGIN OF QUARTZ IN COAL.","docAbstract":"Both a scanning electron microscope and an electron microprobe (EMP) were used in this study to analyze the cathodoluminescence properties of quartz grains in samples of the Upper Freeport coal bed because quartz grains in coal are small (silt sized) and below the resolution capabilities of a standard luminoscope. Quartz grains were identified by the detection of silicon alone with energy dispersive X-ray units attached to both the SEM and the EMP.","largerWorkTitle":"ACS Division of Fuel Chemistry, Preprints","conferenceTitle":"Preprints of Papers - American Chemical Society, Division of Fuel Chemistry, Volume 29, Number 4.","conferenceLocation":"Philadelphia, PA, USA","language":"English","publisher":"ACS","publisherLocation":"Washington, DC, USA","issn":"05693772","usgsCitation":"Ruppert, L.F., Cecil, C.B., and Stanton, R.W., 1984, ORIGIN OF QUARTZ IN COAL., in ACS Division of Fuel Chemistry, Preprints, v. 29, no. 4, Philadelphia, PA, USA, p. 14-20.","startPage":"14","endPage":"20","numberOfPages":"7","costCenters":[],"links":[{"id":222323,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a69efe4b0c8380cd73fa9","contributors":{"authors":[{"text":"Ruppert, Leslie F. 0000-0002-7453-1061 lruppert@usgs.gov","orcid":"https://orcid.org/0000-0002-7453-1061","contributorId":660,"corporation":false,"usgs":true,"family":"Ruppert","given":"Leslie","email":"lruppert@usgs.gov","middleInitial":"F.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":364533,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cecil, C. Blaine 0000-0002-9032-1689","orcid":"https://orcid.org/0000-0002-9032-1689","contributorId":22797,"corporation":false,"usgs":true,"family":"Cecil","given":"C.","email":"","middleInitial":"Blaine","affiliations":[],"preferred":false,"id":364534,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stanton, Ronald W.","contributorId":37386,"corporation":false,"usgs":true,"family":"Stanton","given":"Ronald","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":364535,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70013650,"text":"70013650 - 1984 - Oxygen isotope evidence for submarine hydrothermal alteration of the Del Puerto ophiolite, California","interactions":[],"lastModifiedDate":"2023-12-10T21:56:16.83226","indexId":"70013650","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Oxygen isotope evidence for submarine hydrothermal alteration of the Del Puerto ophiolite, California","docAbstract":"The oxygen isotope compositions and metamorphic mineral assemblages of hydrothermally altered rocks from the Del Puerto ophiolite and overlying volcaniclastic sedimentary rocks at the base of the Great Valley sequence indicate that their alteration occurred in a submarine hydrothermal system. Whole rock δ18O compositions decrease progressively down section (with increasing metamorphic grade): +22.4‰ (SMOW) to +13.8 for zeolite-bearing volcaniclastic sedimentary rocks overlying the ophiolite; +19.6 to +11.6 for pumpellyite-bearing metavolcanic rocks in the upper part of the ophiolite's volcanic member; +12.3 to +8.1 for epidote-bearing metavolcanic rocks in the lower part of the volcanic member; +8.5 to +5.7 for greenschist facies rocks from the ophiolite's plutonic member; +7.6 to +5.8 for amphibolite facies or unmetamorphosed rocks from the plutonic member.
Modelling of fluid-rock interaction in the Del Puerto ophiolite indicates that the observed pattern of upward enrichment in whole rock δ18O can be best explained by isotopic exchange with discharging18O-shifted seawater at fluid/rock mass ratios near 2 and temperatures below 500°C.18O-depleted plutonic rocks necessarily produced during hydrothermal circulation were later removed as a result of tectonism. Submarine weathering and later burial metamorphism at the base of the Great Valley sequence cannot by itself have produced the zonation of hydrothermal minerals and the corresponding variations in oxygen isotope compositions. The pervasive zeolite and prehnite-pumpellyite facies mineral assemblages found in the Del Puerto ophiolite may reflect its origin near an island arc rather than deep ocean spreading center.
","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(84)90006-2","issn":"0012821X","usgsCitation":"Schiffmant, P., Williams, A., and Evarts, R., 1984, Oxygen isotope evidence for submarine hydrothermal alteration of the Del Puerto ophiolite, California: Earth and Planetary Science Letters, v. 70, no. 2, p. 207-220, https://doi.org/10.1016/0012-821X(84)90006-2.","productDescription":"14 p.","startPage":"207","endPage":"220","numberOfPages":"14","costCenters":[],"links":[{"id":220602,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"70","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7293e4b0c8380cd76ba4","contributors":{"authors":[{"text":"Schiffmant, Peter","contributorId":51016,"corporation":false,"usgs":true,"family":"Schiffmant","given":"Peter","affiliations":[],"preferred":false,"id":366558,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, A.E.","contributorId":8225,"corporation":false,"usgs":true,"family":"Williams","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":366557,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Evarts, R.C.","contributorId":74766,"corporation":false,"usgs":true,"family":"Evarts","given":"R.C.","affiliations":[],"preferred":false,"id":366559,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70013649,"text":"70013649 - 1984 - The eruption of Mount Pagan volcano, Mariana Islands, 15 May 1981","interactions":[],"lastModifiedDate":"2012-03-12T17:18:33","indexId":"70013649","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"The eruption of Mount Pagan volcano, Mariana Islands, 15 May 1981","docAbstract":"A major explosive eruption occurred 15 May 1981 at Mount Pagan Volcano, the larger of two historic eruptive centers on Pagan Island, Mariana Islands. The eruption was preceded by increased numbers of locally felt earthquakes beginning in late March or early April and by new ground cracks, new sublimates, and increased gas emissions. A swarm of felt earthquakes began at 0745h (local time = UCT+10 hours) 15 May, and at 0915 h, closely following a loud sonic boom, a strong plinian column issued from the volcano. The high-altitude ash cloud (at least 13.5 km) travelled south-southeast, but ash and scoria deposits were thickest (> 2 m) in the NW sector of the island because of the prevailing low-altitude southeasterly winds. The early activity of 15 May probably involved magmatic eruption along a fissure system oriented about N10??E. However, the eruption became hydromagmatic, possibly within minutes, and was largely restricted to three long-lived vents. The northernmost of these built a substantial new scoria-ash cinder cone. Flows and air-fall deposits, consisting almost entirely of juvenile material, exceeded 105 ?? 106 m3 in volume (75 ?? 106 m3 of magma) on land and at least 70-100 ?? 606 m3 at sea. An unknown volume was carried away by stratospheric winds. Lithic blocks and juvenile bombs as large as 1 m in diameter were thrown more than 2 km from the summit, and evidence for base-surge was observed in restricted corridors as low as 200 m elevation on the north and south slopes of the volcano. Neither of these events resulted in serious injuries to the 54 residents of the island, nor did the eruption produce serious chemical hazards in their water supply. Weak eruptions occurred during the ensuing month, and some of these were monitored by ground observations, seismic monitoring, and deformation studies. Precursory seismicity and possibly deformation occurred with some of the observed eruptions. More vigorous eruptions were reported by visiting residents in late 1981 and early 1982, but these were of lesser magnitude than the 15 May 1981 event. The 15 May lava is predominantly aa and ranges from 3 to > 30 m in thickness. In composition, it is a high-alumina basalt with small (< 1 mm long) phenocrysts of plagioclase and clinopyroxene (7%) that is more or less typical of basalt of the northern Marianas volcanoes. It contains slightly more SiO2 (52%), K2O, TiO2, and less Al2O3 and CaO than does the basalt of the last eruptive event of Mount Pagan Volcano in 1925. Gas analyses indicate that a large portion of air was introduced into the vent system through the porous volcanic edifice and that the carbon gases were not in equilibrium with the magma or each other. ?? 1984.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03770273","usgsCitation":"Banks, N., Koyanagi, R.Y., Sinton, J., and Honma, K., 1984, The eruption of Mount Pagan volcano, Mariana Islands, 15 May 1981: Journal of Volcanology and Geothermal Research, v. 22, no. 3-4, p. 225-269.","startPage":"225","endPage":"269","numberOfPages":"45","costCenters":[],"links":[{"id":220601,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505babd6e4b08c986b3230ed","contributors":{"authors":[{"text":"Banks, N.G.","contributorId":60635,"corporation":false,"usgs":true,"family":"Banks","given":"N.G.","email":"","affiliations":[],"preferred":false,"id":366555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koyanagi, R. Y.","contributorId":35719,"corporation":false,"usgs":true,"family":"Koyanagi","given":"R.","email":"","middleInitial":"Y.","affiliations":[],"preferred":false,"id":366554,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sinton, J.M.","contributorId":75270,"corporation":false,"usgs":true,"family":"Sinton","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":366556,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Honma, K.T.","contributorId":25161,"corporation":false,"usgs":true,"family":"Honma","given":"K.T.","email":"","affiliations":[],"preferred":false,"id":366553,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70013631,"text":"70013631 - 1984 - Double-porosity models for a fissured groundwater reservoir with fracture skin","interactions":[],"lastModifiedDate":"2018-02-12T17:39:02","indexId":"70013631","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Double-porosity models for a fissured groundwater reservoir with fracture skin","docAbstract":"Theories of flow to a well in a double-porosity groundwater reservoir are modified to incorporate effects of a thin layer of low-permeability material or fracture skin that may be present at fracture-block interfaces as a result of mineral deposition or alteration. The commonly used theory for flow in double- porosity formations that is based upon the assumption of pseudo–steady state block-to-fissure flow is shown to be a special case of the theory presented in this paper. The latter is based on the assumption of transient block-to-fissure flow with fracture skin. Under conditions where fracture skin has a hydraulic conductivity that is less than that of the matrix rock, it may be assumed to impede the interchange of fluid between the fissures and blocks. Resistance to flow at fracture-block interfaces tends to reduce spatial variation of hydraulic head gradients within the blocks. This provides theoretical justification for neglecting the divergence of flow in the blocks as required by the pseudo–steady state flow model. Coupled boundary value problems for flow to a well discharging at a constant rate were solved in the Laplace domain. Both slab-shaped and sphere-shaped blocks were considered, as were effects of well bore storage and well bore skin. Results obtained by numerical inversion were used to construct dimensionless-type curves that were applied to well test data, for a pumped well and for an observation well, from the fractured volcanic rock terrane of the Nevada Test Site.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR020i007p00831","usgsCitation":"Moench, A.F., 1984, Double-porosity models for a fissured groundwater reservoir with fracture skin: Water Resources Research, v. 20, no. 7, p. 831-846, https://doi.org/10.1029/WR020i007p00831.","productDescription":"16 p.","startPage":"831","endPage":"846","costCenters":[],"links":[{"id":220381,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"7","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a03aee4b0c8380cd505de","contributors":{"authors":[{"text":"Moench, Allen F. afmoench@usgs.gov","contributorId":3903,"corporation":false,"usgs":true,"family":"Moench","given":"Allen","email":"afmoench@usgs.gov","middleInitial":"F.","affiliations":[],"preferred":true,"id":366518,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013630,"text":"70013630 - 1984 - The martian hemispheric dichotomy may be due to a giant impact","interactions":[],"lastModifiedDate":"2012-03-12T17:18:38","indexId":"70013630","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"The martian hemispheric dichotomy may be due to a giant impact","docAbstract":"Mars is divided into two fundamentally different geological provinces of approximately hemispherical extent1-3. The more southerly province is heavily cratered, contains relatively old geological units, and superficially resembles the lunar and mercurian highlands. The northern province is relatively lightly cratered and contains younger geological units, including extensive plains, volcanic edifices, and volcanic calderas. Except for the Tharsis and Elysium regions and other large volcanoes, most of the younger, northern province consists of lowlands, which lie an average of 3 km below the highlands. Lowlands occupy about one-third of Mars. They are separated from the highlands by a distinct scarp or by a sloping transitional zone as much as 700km wide in which highland materials have been disrupted and partly replaced by lowland deposits (Fig. 1). The transition is characterized by a variety of landforms unknown on other planets. The highlands and lowlands are in isostatic equilibrium across the transitional zone4. No generally accepted explanation for the cause of the highland-lowland dichotomy has been proposed although thinning of the lithosph.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/309138a0","issn":"00280836","usgsCitation":"Wilhelms, D., and Squyres, S.W., 1984, The martian hemispheric dichotomy may be due to a giant impact: Nature, v. 309, no. 5964, p. 138-140, https://doi.org/10.1038/309138a0.","startPage":"138","endPage":"140","numberOfPages":"3","costCenters":[],"links":[{"id":205026,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/309138a0"},{"id":220325,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"309","issue":"5964","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505badbee4b08c986b323dc3","contributors":{"authors":[{"text":"Wilhelms, D.E.","contributorId":82302,"corporation":false,"usgs":true,"family":"Wilhelms","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":366517,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Squyres, S. W.","contributorId":31836,"corporation":false,"usgs":true,"family":"Squyres","given":"S.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":366516,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013623,"text":"70013623 - 1984 - RECENT DEVELOPMENTS IN PROSPECTOR AND FUTURE EXPERT SYSTEMS IN REGIONAL RESOURCE EVALUATION.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:38","indexId":"70013623","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"RECENT DEVELOPMENTS IN PROSPECTOR AND FUTURE EXPERT SYSTEMS IN REGIONAL RESOURCE EVALUATION.","docAbstract":"PROSPECTOR was developed to aid the geologist in evaluating the mineral potential of a site or an area. Recent developments include enhancements of the existing PROSPECTOR program and the creation of two new programs, muPROSPECTOR and HYDRO. It is predicted that PROSPECTOR and similar programs will develop most rapidly for applications which geologists feel ill-prepared to handle unaided and for focusing on undetected deposits for which more systematic evaluation of geologic, geochemical, and geophysical data are required.","conferenceTitle":"Proceedings - PECORA 9: Spatial Information Technologies for Remote Sensing Today and Tomorrow.","conferenceLocation":"Sioux Falls, ND, USA","language":"English","publisher":"IEEE","publisherLocation":"New York, NY, USA","isbn":"081860588X","usgsCitation":"McCammon, R.B., 1984, RECENT DEVELOPMENTS IN PROSPECTOR AND FUTURE EXPERT SYSTEMS IN REGIONAL RESOURCE EVALUATION., Proceedings - PECORA 9: Spatial Information Technologies for Remote Sensing Today and Tomorrow., Sioux Falls, ND, USA, p. 243-248.","startPage":"243","endPage":"248","numberOfPages":"6","costCenters":[],"links":[{"id":220211,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9331e4b0c8380cd80c6f","contributors":{"authors":[{"text":"McCammon, Richard B.","contributorId":107674,"corporation":false,"usgs":true,"family":"McCammon","given":"Richard","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":366503,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013620,"text":"70013620 - 1984 - Field testing the hypothesis of Darcian flow through a carbonate aquifer","interactions":[],"lastModifiedDate":"2020-01-19T11:52:03","indexId":"70013620","displayToPublicDate":"1984-01-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Field testing the hypothesis of Darcian flow through a carbonate aquifer","docAbstract":"The acceptability of the hypothesis of Darcian flow through a semiconfined carbonate aquifer was tested prior to running a multiple-day aquifer test in Pinellas County, Florida. The approach used to test the hypothesis was to run a number of hour-long aquifer tests at different discharges with drawdown measured at the same time during each test in two observation wells, one at 35 feet and the other at 733 feet from the pumped well. The hypothesis of Darcian flow through the semiconfined carbonate aquifer was deemed acceptable.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.1984.tb01423.x","issn":"0017467X","usgsCitation":"Hickey, J., 1984, Field testing the hypothesis of Darcian flow through a carbonate aquifer: Ground Water, v. 22, no. 5, p. 544-547, https://doi.org/10.1111/j.1745-6584.1984.tb01423.x.","productDescription":"4 p.","startPage":"544","endPage":"547","numberOfPages":"4","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":220208,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"5","noUsgsAuthors":false,"publicationDate":"2006-03-21","publicationStatus":"PW","scienceBaseUri":"505a0fdfe4b0c8380cd53a54","contributors":{"authors":[{"text":"Hickey, J.J.","contributorId":57010,"corporation":false,"usgs":true,"family":"Hickey","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":366498,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
]}