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  • 1
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    PANGAEA
    In:  Supplement to: Goldberg, Edward D; Arrhenius, Gustaf (1958): Chemistry of Pacific pelagic sediments. Geochimica et Cosmochimica Acta, 13(2-3), 153-212, https://doi.org/10.1016/0016-7037(58)90046-2
    Publication Date: 2018-09-27
    Description: The chemical and mineralogical composition of pelagic sediments from the East Pacific Ocean has been determined with the aim of defining the ultimate sources and the mechanisms of formation of the solid phases. The distribution of elements between sea-water, the pore solution and the various solid components of the sediments permits interpretations of the variations in time and space of the gross chemical composition of pelagic clays. For example, manganese, present in sea-water in a divalent form, is apparently oxidized at the sediment-water interface to tetravalent species which subsequently become a part of the group of ferromanganese oxide minerals which are found in the marine environment. It is suggested the rate of manganese accumulation in sediments is some function of the length of time the sediment surface is in contact with sea-water. The contribution of chemical species from the different geospheres is considered. The quantitative importance of pelagic clays in the major sedimentary cycle is studied on the basis of the distribution of the weathered igneous rock products between continental and pelagic deposits and sea-water. These analyses of a wide variety of pelagic clays allow a reformulation of the geochemical balance and it is concluded that pelagic clays account for approximately 13 per cent of the total mass of sediments produced over geologic time.
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 2
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    PANGAEA
    In:  Supplement to: Hekinian, Roger; Starkes, J; Ericson, D (1956): Vema Cruise 09 - Preliminary Megascopic Descriptions of Split Cores. Lamont Geological Observatory, Columbia University, New York, 40 pp, http://www.ngdc.noaa.gov/nndc/struts/results?op_28=eq&v_28=01035009&t=101477&s=1&d=2
    Publication Date: 2018-09-27
    Description: The cores and dredges described in this report were taken during the VEMA 9 Expedition from February until April 1958 by the Lamont Geological Observatory, Columbia University from the R/V Vema. A total of 34 cores were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.
    Type: Dataset
    Format: text/tab-separated-values, 138 data points
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  • 3
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    PANGAEA
    In:  Supplement to: Ericson, D; Baker, RN; Goldstein, RF (1955): Vema Cruise 07 - Preliminary Megascopic Descriptions of Split Cores. Lamont Geological Observatory, Columbia University, New York, unpublished, 8 pp, http://www.ngdc.noaa.gov/mgg/geology/data/vema/vm07/vm07_summary.pdf
    Publication Date: 2018-09-27
    Description: The cores and dredges described in this report were taken during the VEMA 7 Expedition from May until September 1955 by the Lamont Geological Observatory, Columbia University from the R/V Vema. A total of 78 cores were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
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  • 4
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    PANGAEA
    In:  Supplement to: Ericson, D; Morgenstein, M; Grinnell, R (1956): Vema Cruise 10 - Preliminary Megascopic Descriptions of Split Cores. Lamont Geological Observatory, Columbia University, New York, unpublished, 145 pp, https://www.ngdc.noaa.gov/nndc/struts/results?op_28=eq&v_28=01035010&t=101477&s=1&d=2
    Publication Date: 2018-09-27
    Description: The cores and dredges described in this report were taken during the VEMA 10 Expedition from June until September 1956 by the Lamont Geological Observatory, Columbia University from the R/V Vema. A total of 95 cores were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.
    Type: Dataset
    Format: text/tab-separated-values, 254 data points
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  • 5
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    PANGAEA
    In:  Supplement to: Tatsumoto, M; Goldberg, Edward D (1959): Some aspects of the marine geochemistry of uranium. Geochimica et Cosmochimica Acta, 17(3-4), 201-208, https://doi.org/10.1016/0016-7037(59)90094-8
    Publication Date: 2018-12-16
    Description: The uranium concentrations in marine calcareous material of a biological origin varied between 0.0X and 0.X p.p.m. with the exception of corals which had concentrations of several p.p.m. The aragonitic oolites and aragonite precipitated from sea-water had values similar to those of the corals. A geochronology based on the growth of ionium (thorium-230) from uranium is applicable not only to corals, as previous investigators have pointed out, but also to oolites. Several examples of "oolite ages" are given. The uranium content of ferromanganese minerals from pelagic deposits is of the order of from 4 to 5 p.p.m.
    Type: Dataset
    Format: text/tab-separated-values, 10 data points
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  • 6
    Publication Date: 2015-10-28
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , NonPeerReviewed
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  • 7
    Publication Date: 2018-09-27
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
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  • 8
    Publication Date: 2018-09-27
    Type: Dataset
    Format: text/tab-separated-values, 27 data points
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  • 9
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    PANGAEA
    In:  Supplement to: Wiseman, J D H (1937): Basalts from the Carlsberg Ridge, Indian Ocean. In: Geological and Mineralogical Investigations, The John Murray Expedition 1933-1934 - Scientific Reports. British Museum ( Natural History ), London, United Kingdom, 3(1), 2-31, hdl:10013/epic.46160.d006
    Publication Date: 2019-02-13
    Description: During the cruise of the" Mabahiss" from Zanzibar to Colombo at Station 133 (1° 25' 54" S. to 1° 19' 42" S. and 66° 34' 12" E. to 66° 35' 18" E.) several small rock fragments were brought up in the Monegasque net; and, since at this position there is no possibility of the material being transferred by floating Ice, these specimens are of some interest as samples of oceanic rock foundations. All the rocks have a black appearance, but in the majority this skin is of negligible thickness. Exceptionally, however, it may attain to 1/3 in. (St. 133, 8), and then the specimens are rounded. The coating is made of dark opaque manganese material. At Station 166 one or two similar specimens of angular basalt were found in the trawl consisting mainly of manganese nodules.
    Type: Dataset
    Format: application/zip, 2 datasets
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