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  • Data  (88)
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  • 11
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    Thorium and Uranium analyses of sediment core GIK12310-4, NW African continental margin (Table 1,2)
    PANGAEA
    In:  Supplement to: Mangini, Augusto (1978): Thorium and uranium isotope analyses on "Meteor" core 12310, NW African Continental Rise. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C29, 1-5
    Details
    Publication Date: 2023-06-27
    Description: The Th content of the sediment samples from "Meteor" core GIK12310-4 (3080 m water depth, off NW Africa) on a carbonate-free basis lies around the average of 12.4 ppm and is similar to the average content of the earth crust. On the contrary, uranium was found to be up to 3.5-fold enriched in the core section between 60 and 330 cm (within the Wuerm Glacial) where reducing conditions occur, due to deposition of authigenic uranium (9 µg/cm**2 1000 yrs.). The authigenic uranium content is correlated to the organic matter content (U/Corg ratio = 6 * 10**4). On the basis of the uranium content of the oxidized section uranium was split into a detritic and an authigenic component and the amount of supported ionium was calculated. From the profile of the specific Io-cxcess activity (= Io-total - Io-supported) with depth, average sedimentation rates of 3.3 ± 0.6 cm/1000 yrs. for the warmer stages and of 5 ± 1 cm/l000 yrs. for the cooler periods were estimated.
    Keywords: Calcium carbonate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; East Atlantic; GIK12310-4; KAL; Kasten corer; M25; Meteor (1964); Protactinium, standard deviation; Protactinium-231; Protactinium-231 excess; Protactinium-231 excess, standard deviation; Thorium; Thorium, standard deviation; Thorium-230; Thorium-230 excess; Thorium-230 excess, standard deviation; Uranium; Uranium, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 237 data points
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  • 12
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    Figure 2. Age model of sediment profile PS2185
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, comment; Age model; Age model, composite; ARK-VIII/3; AWI_Paleo; DEPTH, sediment/rock; Event label; GEOMAR; Giant box corer; GKG; Helmholtz Centre for Ocean Research Kiel; KAL; Kasten corer; Lomonosov Ridge, Arctic Ocean; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS19/186; PS19 ARCTIC91; PS2185-3; PS2185-6; Quaternary Environment of the Eurasian North; QUEEN
    Type: Dataset
    Format: text/tab-separated-values, 98 data points
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  • 13
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    (Table 2) Uranium and thorium isotopic composition, activity ratios and ages of bivalvia shells in sediment core GIK14350, northern Germany
    PANGAEA
    In:  Supplement to: Lomitschka, Michael; Frank, Norbert; Mangini, Augusto (1997): Untersuchungen zur Th/U-Datierung eemzeitlicher Muscheln aus Schleswig-Holstein = U-Th dating of eemian bivalves from Schleswig-Holstein. Meyniana, 49, 85-102, https://doi.org/10.2312/meyniana.1997.49.85
    Details
    Publication Date: 2023-06-27
    Description: A new chemical procedure for cleaning marine carbonates was applied to remove detritus as well as metaloxide contaminations of marine shells from Eemian deposits and adjoining succession of a sediment core from Dagebüll, Schleswig- Holstein. Hence, one can significantly reduce the contamination with detrital uranium and thorium. Thermal ionisation mass spectrometry was applied to determine the uranium and thorium activities used for 230Th/U dating of these shells. At least ten samples of marine bivalves of five different core sections were analysed. Samples located below a five meter thick clay layer at 19-24 m yielded an average age of 132±18 ka. Shells located above the clays at 15-20 m depth were strongly influenced by percolating groundwaters of an open system. Therefore, a reliable dating of these samples was not possible.
    Keywords: Age, 230Th/U Thorium-Uranium; Age, dated; Age, dated standard deviation; DA-1; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Error, absolute; Error, relative; GIK14350-1; GIK-cruise; Hauke-Haien-Koog, Dagebüll, Schleswig-Holstein, Germany; Laboratory number; Sample ID; Sample mass; Thermal Ionization Mass Spectrometry (TIMS); Thorium-229/Thorium-230 ratio; Thorium-229/Thorium-232 ratio; Thorium-230; Thorium-230, standard deviation; Thorium-230/Thorium-232 ratio; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, error, relative; Thorium-232; Thorium-232, standard deviation; Uranium-234/Uranium-236 ratio; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, error, absolute; Uranium-235/Uranium-236 ratio; Uranium-238; Uranium-238/Uranium-236 ratio
    Type: Dataset
    Format: text/tab-separated-values, 390 data points
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  • 14
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    Geochemistry and radionuclides of sediment core PS1388-3
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Alpha spectrometry; Aluminium; ANT-IV/3; Atka Bay; AWI_Paleo; Barium; Beryllium-10; Beryllium-10, standard deviation; Calcium; Copper; Density, wet bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gravity corer (Kiel type); Iron; Isotope ratio mass spectrometry; Magnesium; Manganese; Nickel; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Potassium; Protactinium-231; Protactinium-231, standard deviation; PS08; PS08/366; PS1388-3; Pycnometer (Micromeritics); SL; Thorium-230, supported, uncorrected; Thorium-230, supported, uncorrected standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation; X-ray fluorescence (XRF); Zinc
    Type: Dataset
    Format: text/tab-separated-values, 3295 data points
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  • 15
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    Geochemistry and radionuclides of sediment core PS1170-3
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Alpha spectrometry; Aluminium; ANT-II/3; AWI_Paleo; Barium; Beryllium-10; Beryllium-10, standard deviation; Calcium; Copper; Density, wet bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gravity corer (Kiel type); Iron; Isotope ratio mass spectrometry; Magnesium; Manganese; Nickel; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Potassium; Protactinium-231; Protactinium-231, standard deviation; PS04; PS04/257; PS1170-3; Pycnometer (Micromeritics); SL; South Atlantic Ocean; Thorium-230, supported, uncorrected; Thorium-230, supported, uncorrected standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation; X-ray fluorescence (XRF); Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1702 data points
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  • 16
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    Radionuclides of sediment core PS1575-1
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Alpha spectrometry; ANT-VI/3; AWI_Paleo; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Protactinium-231; Protactinium-231, standard deviation; PS12; PS12/248; PS1575-1; SL; South Orkney; Thorium-230, supported, uncorrected; Thorium-230, supported, uncorrected standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1520 data points
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  • 17
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    Sedimentation rate and radionuclides of sediment core PS1754-2 (1996)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Accumulation rate, mass; Accumulation rate, sediment, standard deviation; Age model; Alpha spectrometry; ANT-VIII/3; AWI_MarGeoChem; AWI_Paleo; Density, dry bulk; DEPTH, sediment/rock; Giant box corer; GKG; Marine Geochemistry @ AWI; Meteor Rise; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/278; PS1754-2; Sedimentation rate; Sedimentation rate, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Vertical rain rate; Vertical rain rate, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 72 data points
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  • 18
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    Sedimentation rate and radionuclides of sediment core PS1754-1 (1996)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Accumulation rate, mass; Accumulation rate, sediment, standard deviation; Age model; Alpha spectrometry; ANT-VIII/3; AWI_MarGeoChem; AWI_Paleo; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gravity corer (Kiel type); Marine Geochemistry @ AWI; Meteor Rise; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/278; PS1754-1; Sedimentation rate; Sedimentation rate, standard deviation; SL; Thorium-230 excess; Thorium-230 excess, standard deviation; Vertical rain rate; Vertical rain rate, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 406 data points
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  • 19
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    Sedimentation rate and radionuclides of sediment core PS1772-8 (1996)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Accumulation rate, mass; Accumulation rate, sediment, standard deviation; Age model; Alpha spectrometry; ANT-VIII/3; Atlantic Ridge; AWI_MarGeoChem; AWI_Paleo; Calculated; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gravity corer (Kiel type); Marine Geochemistry @ AWI; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/321; PS1772-8; Sedimentation rate; Sedimentation rate, standard deviation; SL; Thorium-230 excess; Thorium-230 excess, standard deviation; Vertical rain rate; Vertical rain rate, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 966 data points
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  • 20
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    Sedimentation rate and radionuclides of sediment core PS1772-6 (1996)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Accumulation rate, mass; Accumulation rate, sediment, standard deviation; Age model; Alpha spectrometry; ANT-VIII/3; Atlantic Ridge; AWI_MarGeoChem; AWI_Paleo; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Marine Geochemistry @ AWI; MUC; MultiCorer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS16; PS16/321; PS1772-6; Sedimentation rate; Sedimentation rate, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Vertical rain rate; Vertical rain rate, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 42 data points
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