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Datasets of project "Antarctic Geological Drilling"

Mostrando recursos 1 - 20 de 153

  1. Lithostratigraphy determined from downhole logs in the AND-2A borehole

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas
    During the 2007-2008 austral spring season, the ANDRILL (Antarctic Drilling project) Southern McMurdo Sound Project recovered an 1138-m-long core, representing the last 20 m.y. of glacial history. An extensive downhole logging program was successfully carried out. Due to drill hole conditions, logs were collected in several passes from the total depth at 1138.54 m below seafloor (mbsf) to 230 mbsf. After data correction, several statistical methods, such as factor analysis, cluster analysis, box-and-whisker diagrams, and cross-plots, were applied. The aim of these analyses was to use detailed interpretation of the downhole logs to obtain a description of the lithologies and...

  2. Lithostratigraphy determined from downhole logs in the AND-2A borehole

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas
    During the 2007-2008 austral spring season, the ANDRILL (Antarctic Drilling project) Southern McMurdo Sound Project recovered an 1138-m-long core, representing the last 20 m.y. of glacial history. An extensive downhole logging program was successfully carried out. Due to drill hole conditions, logs were collected in several passes from the total depth at 1138.54 m below seafloor (mbsf) to 230 mbsf. After data correction, several statistical methods, such as factor analysis, cluster analysis, box-and-whisker diagrams, and cross-plots, were applied. The aim of these analyses was to use detailed interpretation of the downhole logs to obtain a description of the lithologies and...

  3. Normalized geophysical parameters and factor analyses of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  4. Normalized geophysical parameters and factor analyses of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  5. Geophysical measurements of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  6. Geophysical measurements of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  7. Geochemical measurements of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  8. Geochemical measurements of sediment core AND-2A

    Hunze, Sabine; Schröder, Henning; Kuhn, Gerhard; Wonik, Thomas

  9. Porosity and density of the AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata
    A study of density and porosity is presented for the 1285-m-long AND-1B core recovered from a flexural moat in the McMurdo Sound (Antarctica) in order to interpret sediment consolidation in an ice-proximal location on the Antarctic shelf. Various lithologies imply environmental changes from open marine to subglacial, and are numerically expressed in high-resolution whole-core wet-bulk density (WBD). Grain density data interpolated from discrete samples range from 2.14 to 3.85 g/cm3 and are used to calculate porosity from WBD in order to avoid the 5%-15% overestimation and underestimation of porosities obtained by standard methods. The trend of porosity extends from 0.5...

  10. Porosity and density of the AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata
    A study of density and porosity is presented for the 1285-m-long AND-1B core recovered from a flexural moat in the McMurdo Sound (Antarctica) in order to interpret sediment consolidation in an ice-proximal location on the Antarctic shelf. Various lithologies imply environmental changes from open marine to subglacial, and are numerically expressed in high-resolution whole-core wet-bulk density (WBD). Grain density data interpolated from discrete samples range from 2.14 to 3.85 g/cm3 and are used to calculate porosity from WBD in order to avoid the 5%-15% overestimation and underestimation of porosities obtained by standard methods. The trend of porosity extends from 0.5...

  11. Effective stress and void ratio of ANDRILL AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata

  12. Effective stress and void ratio of ANDRILL AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata

  13. Physical properties of ANDRILL AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata

  14. Physical properties of ANDRILL AND-1B sediment core

    Niessen, Frank; Gebhardt, Catalina; Kuhn, Gerhard; Magens, Diana; Monien, Donata

  15. Water content of ANDRILL drill core AND-2A

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar

  16. Water content of ANDRILL drill core AND-2A

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar

  17. Water content of ANDRILL drill core AND-2A

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar

  18. RGB color and Lab raw data from ANDRILL drill core AND-2A, links to files

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar

  19. RGB color and Lab raw data from ANDRILL drill core AND-2A, links to files

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar

  20. Color reflectance and XRF drill core scanner data of ANDRILL core AND-2A

    Kuhn, Gerhard; Hoffmann, Stefan; von Eynatten, Hilmar
    The compositional record of the AND-2A drillcore is examined using petrological, sedimentological, volcanological and geochemical analysis of clasts, sediments and pore waters. Preliminary investigations of basement clasts (granitoids and metasediments) indicate both local and distal sources corresponding to variable ice-volume and ice-flow directions. Low abundance of sedimentary clasts (e.g., arkose, litharenite) suggests reduced contributions from sedimentary covers while intraclasts (e.g., diamictite, conglomerate) attest to intrabasinal reworking. Volcanic material includes pyroclasts (e.g., pumice, scoria), sediments and lava. Primary and reworked tephra layers occur within the Early Miocene interval (1093 to 640 metres below sea floor mbsf). The compositions of volcanic clasts...

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