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Datasets of project "Volatiles and Fluids in Subduction Zones"

Mostrando recursos 1 - 20 de 273

  1. (Table 1) Results from XRD analysis as well as sediment type and selected results from ring shear experiments

    Kopf, Achim J
    The location of the seaward tip of a subduction thrust controls material transfer at convergent plate margins, and hence global mass balances. At approximately half of those margins, the material of the subducting plate is completely underthrust so that no accretion or even subduction erosion takes place. Along the remaining margins, material is scraped off the subducting plate and added to the upper plate by frontal accretion. We here examine the physical properties of subducting sediments off Costa Rica and Nankai, type examples for an erosional and an accretionary margin, to investigate which parameters control the level where the frontal...

  2. Geochemistry of sediment core M66/3a_167

    Brückmann, Warner; Bleyer, Anke

  3. Tephrostratigraphy and radiometric dating of authigenic carbonates

    Kutterolf, Steffen; Liebetrau, Volker; Mörz, Tobias; Freundt, Armin; Hammerich, Thomas; Garbe-Schönberg, Carl-Dieter
    At convergent margins, fluids rise through the forearc in response to consolidation of the upper plate and dewatering of the subducting plate, and produce various cold-seep-related features on the seafloor (mud diapirs, mud mounds). At the Central American forearc, authigenic carbonates precipitated from rising fluids within such structures during active venting while typical mixed-mud sediments were ejected onto the surrounding seafloor where they became intercalated with normal pelagic background sediments, indicating that mud mounds evolved unsteadily through alternating active and inactive phases. Intercalated regional ash layers from Plinian eruptions at the Central American volcanic arc provide time marks that constrain...

  4. Tephrostratigraphy and radiometric dating of authigenic carbonates

    Kutterolf, Steffen; Liebetrau, Volker; Mörz, Tobias; Freundt, Armin; Hammerich, Thomas; Garbe-Schönberg, Carl-Dieter
    At convergent margins, fluids rise through the forearc in response to consolidation of the upper plate and dewatering of the subducting plate, and produce various cold-seep-related features on the seafloor (mud diapirs, mud mounds). At the Central American forearc, authigenic carbonates precipitated from rising fluids within such structures during active venting while typical mixed-mud sediments were ejected onto the surrounding seafloor where they became intercalated with normal pelagic background sediments, indicating that mud mounds evolved unsteadily through alternating active and inactive phases. Intercalated regional ash layers from Plinian eruptions at the Central American volcanic arc provide time marks that constrain...

  5. Geochemistry of sediment core M54/3A_189

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  6. Geochemistry of sediment core M54/3A_188

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  7. Geochemistry of sediment core M54/3A_187

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  8. Geochemistry of sediment core M54/3A_186

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  9. Geochemistry of sediment core M54/3A_185BC4

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  10. Geochemistry of sediment core M54/3A_185BC2

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  11. Geochemistry of sediment core M54/3A_179

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  12. Geochemistry of sediment core M54/3A_176-2

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  13. Geochemistry of sediment core M54/3A_175

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  14. Geochemistry of sediment core M54/3A_174BC4

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  15. Geochemistry of sediment core M54/3A_174BC1

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  16. Geochemistry of sediment core M54/3A_173-2

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  17. Geochemistry of sediment core M54/3A_173-1

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  18. Geochemistry of sediment core M54/3A_171

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  19. Geochemistry of sediment core M54/3A_168

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

  20. Geochemistry of sediment core M54/3A_164

    Hensen, Christian; Brückmann, Warner; Bleyer, Anke

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