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  • Archive of Ocean Data; ARCOD  (3)
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  • 1
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    Radiocarbon ages, δ¹³C values and rare earth element content of sediment cores BP00-23/07 and BP00-07/06
    PANGAEA
    In:  Supplement to: Levitan, Mikhail A; Bourtman, Maria V; Demina, Lyudmila L; Krupskaya, Viktoria V; Sedykh, E M; Chudetsky, MYu (2004): History of Holocene sedimentation in the southern Kara Sea. Lithology and Mineral Resources, 39(6), 566-579, https://doi.org/10.1023/B:LIMI.0000046959.42527.71
    Details
    Publication Date: 2023-05-12
    Description: Two bottom sediment cores (BP00-23/7 and BP00-7/6) recovered from the Yenisei transect in the southern Kara Sea are described. Data on their grain size composition, clay and heavy mineral assemblages, and distribution of a large group of chemical elements are presented. Radiocarbon dates based on AMS C-14 method suggest the Holocene age of sediments in the cores. Literature data on physical properties and foraminifers have also been analyzed. The facies affiliation of the lithostratigraphic subdivisions has been unraveled. History of the Yenisei River runoff in the Holocene has been reconstructed on the basis of different indicators.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 2
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    Composition of sedimentary rocks from the Mountainous Crimea and the Northwestern Caucasus
    PANGAEA
    In:  Supplement to: Levitan, Mikhail A; Alekseev, A S; Badulina, N V; Girin, Yury P; Kopaevich, L F; Kubrakova, I V; Tyutyunnik, O A; Chudetsky, MYu (2010): Geochemistry of Cenomanian/Turonian boundary sediments in the mountainous part of Crimea and the Northwestern Caucasus. Translated from Geokhimiya, 2010, 48(6), 570-591, Geochemistry International, 48(6), 534-554, https://doi.org/10.1134/S0016702910060029
    Details
    Publication Date: 2023-05-12
    Description: Detailed data obtained on chemistry of sedimentary rocks from the Mountainous Crimea and the Northwestern Caucasus that were dated at the Cenomanian/Turonian boundary and formed during Oceanic Anoxic Event 2 make it possible to calculate dissolved oxygen concentration in bottom waters of the sedimentation basin. Enrichment factors of trace elements in black shales are revised and an explanation is suggested for genesis of the rocks with regard for unusual climatic changes.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 3
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    Composition of sedimentary material from the bottom and the area surrounding the Lake Untersee, East Antarctica
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Description: This paper presents data on geographic and geologic conditions of modern sedimentation in the Lake Untersee, the largest lake in the East Antarctica. Geochemical and sedimentation data indicate that the leading mechanism supplying aluminosilicate sedimentary material to the surface layer of bottom sediments is seasonal melting of the Anuchin glacier and the mountain glacier on the southeastern part of the valley hosting the lake. Strongly reduced conditions in the lowermost 25 m of the water column in the smaller of two depressions of the lake bottom were favorable for enrichment of the bottom sediments in bacteriogenic organic matter, Mo, Au, and Pd. H2S-contaminated water results to significant enrichment of the sediments only in redox-sensitive elements that are able to migrate in anionic complexes and precipitate (co-precipitate) as sulfides.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 9 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
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