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Datasets with PANGAEA technical keyword @acex302pc

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  1. Consolidation tests, elastic properties and grain size measurements at the consolidations samples from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin
    The Integrated OceanDrilling Program's Expedition 302, the Arctic Coring Expedition (ACEX), recovered the first Cenozoic sedimentary sequence from the central Arctic Ocean. ACEX provided ground truth for basin scale geophysical interpretations and for guiding future exploration targets in this largely unexplored ocean basin. Here, we present results from a series of consolidation tests used to characterize sediment compressibility and permeability and integrate these with high-resolution measurements of bulk density, porosity and shear strength to investigate the stress history and the nature of prominent lithostratigraphic and seismostratigraphic boundaries in the ACEX record. Despite moderate sedimentation rates (10-30 m/Myr) and high permeability...

  2. Consolidation tests, elastic properties and grain size measurements at the consolidations samples from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin
    The Integrated OceanDrilling Program's Expedition 302, the Arctic Coring Expedition (ACEX), recovered the first Cenozoic sedimentary sequence from the central Arctic Ocean. ACEX provided ground truth for basin scale geophysical interpretations and for guiding future exploration targets in this largely unexplored ocean basin. Here, we present results from a series of consolidation tests used to characterize sediment compressibility and permeability and integrate these with high-resolution measurements of bulk density, porosity and shear strength to investigate the stress history and the nature of prominent lithostratigraphic and seismostratigraphic boundaries in the ACEX record. Despite moderate sedimentation rates (10-30 m/Myr) and high permeability...

  3. (Table 3) Statistics summarizing of grain size measurements at consolidation sample from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  4. (Table 3) Statistics summarizing of grain size measurements at consolidation sample from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  5. (Table 2) Average elastic properties of sedimentary subunits where consolidation samples were taken from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  6. (Table 2) Average elastic properties of sedimentary subunits where consolidation samples were taken from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  7. (Table 1) Consolidation tests from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  8. (Table 1) Consolidation tests from different Holes of IODP Expedition 302

    O'Regan, Matthew; Moran, K; Baxter, C D P; Cartwright, J; Vogt, Christoph; Kölling, Martin

  9. Planktonic foraminifera and microfossil composition of IODP Hole 302-M0004C

    Eynaud, Frédérique
    Calcareous microfossils are widely used by paleoceanographers to investigate past sea-surface hydrology. Among these microfossils, planktonic foraminifera are probably the most extensively used tool (e.g. [1] for a review), as they are easy to extract from the sediment and can also be used for coupled geochemical (e.g; d18O, d13C, Mg/Ca) and paleo-ecological investigations. Planktonic foraminifera are marine protists, which build a calcareous shell made of several chambers which reflect in their chemistry the properties of the ambient water-masses. Planktonic foraminifera are known to thrive in various habitats, distributed not only along a latitudinal gradient, but also along different water-depth intervals...

  10. Planktonic foraminifera and microfossil composition of IODP Hole 302-M0004C

    Eynaud, Frédérique
    Calcareous microfossils are widely used by paleoceanographers to investigate past sea-surface hydrology. Among these microfossils, planktonic foraminifera are probably the most extensively used tool (e.g. [1] for a review), as they are easy to extract from the sediment and can also be used for coupled geochemical (e.g; d18O, d13C, Mg/Ca) and paleo-ecological investigations. Planktonic foraminifera are marine protists, which build a calcareous shell made of several chambers which reflect in their chemistry the properties of the ambient water-masses. Planktonic foraminifera are known to thrive in various habitats, distributed not only along a latitudinal gradient, but also along different water-depth intervals...

  11. Abundances and ebridian skeleton contents from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo
    Abundant and diversified ebridians recovered during IODP Expedition 302 (ACEX) have been identified and counted in order to establish their taxonomy and to decipher the biostratigraphic potential of ebridians in the central Arctic Ocean. In the ACEX samples these fossils are preserved in Lithologic Units 1/6 and 2, which consist mainly of dark silty clay and biosiliceous ooze, respectively. Thirty taxa have been distinguished, three of which are described as new species (Ammmodochium lomonosovense, Pseudammodochium karyon, and pseudammodochium psichion). The most dominant ebridian species is Pseudammodochium dictyoides throughout the biosiliceous section. The second dominant species varies alternately throughout the section....

  12. Abundances and ebridian skeleton contents from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo
    Abundant and diversified ebridians recovered during IODP Expedition 302 (ACEX) have been identified and counted in order to establish their taxonomy and to decipher the biostratigraphic potential of ebridians in the central Arctic Ocean. In the ACEX samples these fossils are preserved in Lithologic Units 1/6 and 2, which consist mainly of dark silty clay and biosiliceous ooze, respectively. Thirty taxa have been distinguished, three of which are described as new species (Ammmodochium lomonosovense, Pseudammodochium karyon, and pseudammodochium psichion). The most dominant ebridian species is Pseudammodochium dictyoides throughout the biosiliceous section. The second dominant species varies alternately throughout the section....

  13. (Table 2) Mean abundance of ebridian taxa in each ebridian assemblage group from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

  14. (Table 2) Mean abundance of ebridian taxa in each ebridian assemblage group from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

  15. Abundances and contents of major silicoflagellates from IODP Holes of Exp302

    Onodera, Jonaotaro; Takahashi, Kozo
    The silicoflagellate taxa obtained in IODP Expedition 302 (ACEX) were identified and counted in order to establish the silicoflagellate biostratigraphy in the central Arctic Ocean. These microfossils in the ACEX samples were preserved in the Lithology Units 1/6 and 2, which are dark silty clay and biosiliceous ooze, respectively. The silicoflagellate skeletons in the ACEX samples are assigned to 56 taxa. Seven taxa were described as new species, which were abundant in Lithology Unit 2. Comparison with several study cases outside the Eocene Arctic Ocean suggested that the silicoflagellate assemblages in ACEX were unique in Lithology Unit 2. The dominance...

  16. Abundances and contents of major silicoflagellates from IODP Holes of Exp302

    Onodera, Jonaotaro; Takahashi, Kozo
    The silicoflagellate taxa obtained in IODP Expedition 302 (ACEX) were identified and counted in order to establish the silicoflagellate biostratigraphy in the central Arctic Ocean. These microfossils in the ACEX samples were preserved in the Lithology Units 1/6 and 2, which are dark silty clay and biosiliceous ooze, respectively. The silicoflagellate skeletons in the ACEX samples are assigned to 56 taxa. Seven taxa were described as new species, which were abundant in Lithology Unit 2. Comparison with several study cases outside the Eocene Arctic Ocean suggested that the silicoflagellate assemblages in ACEX were unique in Lithology Unit 2. The dominance...

  17. (Appendix 1) Major silicoflagellate skeletons from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

  18. (Appendix 1) Major silicoflagellate skeletons from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

  19. (Table 2) The mean abundances of silicoflagellates of each group from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

  20. (Table 2) The mean abundances of silicoflagellates of each group from IODP Exp302

    Onodera, Jonaotaro; Takahashi, Kozo

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