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  • Cambridge University Press  (198)
  • Boulder, Colo. : Geological Society of America
  • London : H.M.Stat.Off.
  • 1980-1984  (201)
  • 1983  (201)
Sammlung
Verlag/Herausgeber
Sprache
Erscheinungszeitraum
  • 1980-1984  (201)
Jahr
  • 1
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    The limestone and dolomite resources of the country north and west of Ashbourne, Derbyshire : description of 1:25 000 sheet SK 15 and parts of 04, 05 and 14 (1983)
    London : H.M.Stat.Off.
    Dazugehörige Bände
    Details Verfügbarkeit
    Signatur: SR 90.0914(129)
    In: Mineral assessment report
    Materialart: Schriftenreihen ausleihbar
    Seiten: IV, 78 S. + 1 Kt.-Beil.
    ISBN: 011884329X
    Serie: Mineral Assessment report / Natural Environment Research Council, Institute of Geological Sciences 129
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
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  • 2
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    The limestone and dolomite resources of the country around Settle and Malham, North Yorkshire; with notes on the hard rock resources of the Horton-in-Ribblesdale are : description of parts of 1:25 000 geological sheets 50 and 60 (1983)
    London : H.M.Stat.Off.
    Dazugehörige Bände
    Details Verfügbarkeit
    Signatur: SR 90.0914(126)
    In: Mineral assessment report
    Materialart: Schriftenreihen ausleihbar
    Seiten: III, 31 S. + 1 Kt.-Beil.
    ISBN: 0118843265
    Serie: Mineral Assessment report / Natural Environment Research Council, Institute of Geological Sciences 126
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
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  • 3
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    Nazca plate : crustal formation and Andean convergence ; a volume dedicated to George P. Woollard (1983)
    Boulder, Colo. : Geological Society of America
    Dazugehörige Bände
    Details Verfügbarkeit
    Signatur: S 90.0006(154)
    In: Memoir / Geological Society of America, 154
    Materialart: Schriftenreihen ausleihbar
    Seiten: X, 824 Seiten , Illustrationen, graphische Darstellungen, Karten , 3 Beil. (Mikrofiches)
    Ausgabe: Reprinted
    ISBN: 0-8137-1154-1
    Serie: Memoir / Geological Society of America 154
    URL: http://digitale-objekte.hbz-nrw.de/webclient/DeliveryManager?pid=2691428&custom_att_2=simple_viewer
    Sprache: Englisch
    Anmerkung: Preface INTRODUCTION History of the Nazca Plate Project George P. Woollard and La Verne D. Kulm DIVERGENT BOUNDARY Tectonics of the Nazca-Pacific divergent plate boundary David K. Rea Structure and evolution of the Easter plate D. W. Handschumacher, R. H. Pilger, Jr., J. A. Foreman, and J. F. Camphell Petrogenesis and secondary alteration of upper layer 2 basalts of the Nazca plate K. F. Scheidegger and J. B. Corliss Temporal variations in secondary minerals from Nazca plate basalts, diabases, and microgabbros Debra S. Slakes and K. F. Scheidegger METALLIFEROUS SEDIMENTS Geochemistry of Nazca plate surface sediments: An evaluation of hydrothermal, biogenic, detrital, and hydrogenous sources Jack Dymond Metalliferous-sediment deposition in time and space: East Pacific Rise and Bauer Basin, northern Nazca plate G. Ross Heath and Jack Dymond Lead isotopic composition of metalliferous sediments from the Nazca plate E. Julius Dasch Sediment accumulation rate patterns on the northwest Nazca plate G. M. McMurtry. H. H. Veeh, and C. Moser Uranium and thorium isotopic investigations in metalliferous sediments of the northwestern Nazca plate H. Herbert Veeh Formation and growth of ferromanganese oxides on the Nazca plate Mitchell Lyle Sediment and associated structure of the northern Nazca plate D. L. Erlandson, D. M. Hussong, and J. F. Campbell Economic appraisal of Nazca plate metalliferous sediments Cvrus W. Field, Dennis G. Wetherell, and E. Julius Dasch CONTINENTAL MARGIN AND TRENCH Tectonics, structure, and sedimentary framework of the Peru-Chile Trench W. J. Schweller, L. D. Kulm, and R. A. Prince Coastal structure of the continental margin, northwest Peru and southwest Ecuador Glenn L. Shepherd and Ralph Moberly Sedimentary basins of the Peru continental margin: Structure, stratigraphy, and Cenozoic tectonics from 6°S to 16°S latitude T. Thornburg and L. D. Kulm Crustal structures of the Peru continental margin and adjacent Nazca plate, 9°S latitude Paul R. Jones III Crustal structure and tectonics of the central Peru continental margin and trench L. D. Kulm, R. A. Prince, W. French, S. Johnson, and A. Masias Late Cenozoic carbonates on the Peru continental margin: Lithostratigraphy, biostratigraphy, and tectonic history La Verne D. Kulm, Hans Schroder, Johanna M. Resig, Todd M. Thornburg, Antonio Masias, and Leonard Johnson Vertical movement and tectonic erosion of the continental wall of the Peru-Chile Trench near 1 l°30'S latitude Donald M. Hussong and Larry K. Wipperman Shallow structures of the Peru Margin 12°S - 18°S S. H. Johnson and G. E. Ness Clay mineralogy of the Peru continental margin and adjacent Nazca plate: Implications for provenance, sea level changes, and continental accretion Victor J. Rosato and La Verne D. Kulm Structures of the Nazca Ridge and continental shelf and slope of southern Peru Richard Couch and Robert M. Whitsett Tectonics of the Nazca plate and the continental margin of western South America, 18° to 23°S William T. Coulbourn Biogeography of benthic foraminifera of the northern Nazca plate and adjacent continental margin Johanna M. Resig Estimation of depth to magnetic source using maximum entropy power spectra, with application to the Peru-Chile Trench Richard J. Blakely and Siamak Hassanzadeh An active spreading center collides with a subduction zone: A geophysical survey of the Chile Margin triple junction E. M. Herron, S. C. Cande, and B. R. Hall Structures of the continental margin of Peru and Chile Richard Couch, Robert Whit sett, Bruce Huehn, and Luis Briceno-Guarupe ANDEAN CONVERGENCE ZONE Volcanic gaps and the consumption of aseismic ridges in South America Amos Nur and Zvi Ben-Avraham Geological and geophysical variations along the western margin of Chile near lat 33° to 36°S and their reaction to Nazca plate subduction Allen Lowrie and Richard Hey Chile Margin near lat 38°S: Evidence for a genetic relationship between continental and marine geologic features or a case of curious coincidences? E. M. Herron Convergence and mineralization — Is there a relation? C. Wayne Burnham Role of subducted continental material in the genesis of calc-alkaline volcanics of the central Andes David E. James Isotopic composition of Pb in Central Andean ore deposits George R. Tilt on, Robert J. Pollak, Alan H. Clark, and Ronald C. R. Robertson Epilogue: Geostill reconsidered Cyrus W. Field and E. Julius Dasch
    Standort: Kompaktmagazin unten
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  • 4
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    Effects of eight factors on the growth and nutrient uptake of winter wheat and on the incidence of pests and diseases (1983)
    Cambridge University Press
    Details
    Publikationsdatum: 1983-04-01
    Beschreibung: SUMMARYA multifactorial experiment sown to winter wheat cv. Hustler in autumn 1978 tested the effects of combinations of the following eight factors, each at two levels: drill type, sowing date, amount of nitrogen, division of nitrogen, irrigation, autumn pesticide (aldicarb), summer aphicide (pirimicarb), and fungicide (carbendazim, maneb and tridemorph).The mean grain yield of all plots was 9·7 t/ha and the best eight-plot treatment mean was 11·3 t/ha. The factors that had the greatest effect on yield were aphicide and fungicide, mainly from the control of Metopolophium dirhodum and Septoria spp. respectively. Both factors increased grain size and their effects were more than additive and greater with 250 than with 160 kg N/ha. Aphicide and fungicide also temporarily decreased the numbers of microbes on the developing ears. Autumn pesticide gave good control of aphids in the winter and some control in the summer: it also decreased nematode populations and slightly increased yields.Precision sowing compared with random distribution of seeds along the row had little effect on growth or yield. Sowing on 21 September compared with 13 October greatly increased growth early in the season but had less effect after anthesis; it was the only factor that increased yield when aphicide and fungicide were applied. There was negligible infection by barley yellow dwarf virus in crops sown on either date. The amount and division of N fertilizer affected N uptake early in the season and had small effects on the production and survival of tillers. Three N applications instead of one slightly increased grain yields but did not affect total N uptake by grains plus straw, which averaged 190 kg N/ha. The larger amount of N always increased N uptake but decreased yield in the absence of aphicide and fungicide. Irrigation slightly decreased yield despite prolonging the duration of green leaf area.
    Print ISSN: 0021-8596
    Digitale ISSN: 1469-5146
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Publiziert von Cambridge University Press
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  • 5
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    Icing Measurements on Fixed and Rotating Cylinders (1983)
    Cambridge University Press
    Details
    Publikationsdatum: 1983-01-01
    Beschreibung: There is at present a need to develop a better technique for measuring the rate of icing on structures such as, for example, overhead transmission lines. For aircraft and helicopter icing, the most widely used method of measurement is the rotating cylinder. However, for measuring the icing of structures, this method is difficult to apply and also less accurate due to lower wind velocities. Different approaches are now being developed using fixed cylinders.Icing tests were conducted with fixed and rotating cylinders in a wind tunnel. The rate of icing was obtained through measurements of volume, accretion cross-section and time of deposition. Tests were made using five different liquid water contents and droplet diameter spectra, and four cylinder diameters, keeping the wind velocity and temperature constant. The rate of icing is presented as a function of the diameters of the fixed and rotating cylinders for each of the liquid water contents tested. Results indicate that at lower wind velocities the accretion rate is overestimated for the smaller rotating cylinders. This difference is probably due to the variation of the collection efficiency with diameter. From these results it is suggested that the rate of ice accretion on structures should be based on at least two fixed cylinders of different small sizes in order to take into account the effect of the collection efficiency.
    Print ISSN: 0260-3055
    Digitale ISSN: 1727-5644
    Thema: Geographie , Geologie und Paläontologie
    Publiziert von Cambridge University Press im Namen von International Glaciological Society.
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  • 6
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    Icing Measurements on Fixed and Rotating Cylinders (1983)
    Cambridge University Press
    Details
    Publikationsdatum: 1983-01-01
    Beschreibung: There is at present a need to develop a better technique for measuring the rate of icing on structures such as, for example, overhead transmission lines. For aircraft and helicopter icing, the most widely used method of measurement is the rotating cylinder. However, for measuring the icing of structures, this method is difficult to apply and also less accurate due to lower wind velocities. Different approaches are now being developed using fixed cylinders. Icing tests were conducted with fixed and rotating cylinders in a wind tunnel. The rate of icing was obtained through measurements of volume, accretion cross-section and time of deposition. Tests were made using five different liquid water contents and droplet diameter spectra, and four cylinder diameters, keeping the wind velocity and temperature constant. The rate of icing is presented as a function of the diameters of the fixed and rotating cylinders for each of the liquid water contents tested. Results indicate that at lower wind velocities the accretion rate is overestimated for the smaller rotating cylinders. This difference is probably due to the variation of the collection efficiency with diameter. From these results it is suggested that the rate of ice accretion on structures should be based on at least two fixed cylinders of different small sizes in order to take into account the effect of the collection efficiency.
    Print ISSN: 0260-3055
    Digitale ISSN: 1727-5644
    Thema: Geographie , Geologie und Paläontologie
    Publiziert von Cambridge University Press im Namen von International Glaciological Society.
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  • 7
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    Distribution of Gaseous 12CO2, 13CO2, and 14CO2 in the Sub-Soil Unsaturated Zone of the Western US Great Plains (1983)
    Cambridge University Press
    Details
    Publikationsdatum: 1983-01-01
    Beschreibung: Data on the depth distribution of the major atmospheric gases and the abundance of gaseous 12CO2, 13CO2, and 14CO2 in the subsoil unsaturated zone have been obtained from several sites in the western Great Plains of the United States. Sample profiles range from land surface to depths of 50m. Although each site must be considered on an individual basis, several general statements can be made regarding the profiles. 1) Diffusion of these gaseous molecules through the unsaturated zone is an important transport mechanism. 2) As predicted by diffusion theory, depth profiles of the various isotopic species of CO2 differ substantially from one another, depending on individual sources and sinks such as root respiration and oxidation of organic carbon at depth. 3) In general, post-bomb (〉 100% modern) 14C activities are not observed in the deep unsaturated zone, in contrast to diffusion model predictions. 4) In spite of generally decreasing 14C activities with depth, absolute partial pressures of 14CO2 in the subsoil unsaturated zone are 1–2 orders of magnitude higher than the partial pressure of 14CO2 in the atmosphere.
    Print ISSN: 0033-8222
    Digitale ISSN: 1945-5755
    Thema: Klassische Archäologie , Energietechnik , Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 8
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    Development and Operation of the Harwell Small Counter Facility for the Measurement of 14C in Very Small Samples (1983)
    Cambridge University Press
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    Publikationsdatum: 1983-01-01
    Beschreibung: The Harwell system for measuring milligram size samples using Brookhaven miniature gas counters is fully operative. It comprises 12 counters of different sizes which operate simultaneously within a single NaI crystal (300mm diameter × 300mm long) acting as an anti-coincidence guard counter. Brief details are given of the construction and commissioning of the system, including counter assembly, shield design, electronics, data capture, data analysis, and chemical processing and filling procedures. The performance of the system and an overall view of the fields of application for which the counters have important applications are discussed.
    Print ISSN: 0033-8222
    Digitale ISSN: 1945-5755
    Thema: Klassische Archäologie , Energietechnik , Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 9
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    Technological Advances in the University of Washington Accelerator Mass Spectrometry System (1983)
    Cambridge University Press
    Details
    Publikationsdatum: 1983-01-01
    Beschreibung: During the past year we have continued to work toward greater stability and flexibility in nearly all elements of our accelerator mass spectrometry (AMS) system, which is based upon an FN tandem Van de Graaff accelerator, and have carried out measurements of 14C/12C and 10Be/9Be isotopic abundance ratios in natural samples. The principal recent developments and improvements in the accelerator system and in our sample preparation techniques for carbon and beryllium are discussed, and the results of a study of 10Be cross-contamination of beryllium samples in the sputter ion source are presented.
    Print ISSN: 0033-8222
    Digitale ISSN: 1945-5755
    Thema: Klassische Archäologie , Energietechnik , Geologie und Paläontologie
    Publiziert von Cambridge University Press
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  • 10
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    Current 14C Measurements with the University of Washington FN Tandem Accelerator (1983)
    Cambridge University Press
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    Publikationsdatum: 1983-01-01
    Beschreibung: Our accelerator mass spectrometry (AMS) system shows a one-to-one relationship between sample 14C concentrations determined by AMS - and by β-counting. Measurements of unknown samples against a standard indicate that 14C concentration measurements to better than 2% can be made. For a 30-second data collection interval in a typical run of 100 intervals, the variability of the beam injected into the accelerator is ca 2%, that of the machine transmission is ca 4%, and counting statistics give 4.7% standard deviation for a sample of 80% of modern carbon.
    Print ISSN: 0033-8222
    Digitale ISSN: 1945-5755
    Thema: Klassische Archäologie , Energietechnik , Geologie und Paläontologie
    Publiziert von Cambridge University Press
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