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Datasets with PANGAEA technical keyword @mollenhauerlgm

Mostrando recursos 1 - 8 de 8

  1. Bulk geochemistry and grain-size composition of surface sediments from the SW Atlantic

    Frenz, Michael; Höppner, René; Stuut, Jan-Berend W; Wagner, Thomas; Henrich, Rüdiger
    Surface sediments from the South American continental margin surrounding tbe Argentine Basin were studied with respect to bulk geochemistry (Caeo) and C ) and grain-size composition (sand/silt/clay relation and terrigenous silt grain-size distribution). The grain-size distributions of the terrigenous silt fraction were unmixed into three end members (EMs), using an end-member modelling algorithm. Three unimodal EMs appear to satisfactorily explain the variations in the data set of the grain-size distributions ofterrigenous silt. The EMs are related to sediment supply by rivers, downslope transport, winnowing, dispersal and re-deposition by currents. The bulk geochemical composition was used to trace the distribution of...

  2. Organic carbon accumulation in the South Atlantic Ocean

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold
    A compilation of 1118 surface sediment samples from the South Atlantic was used to map modern seafloor distribution of organic carbon content in this ocean basin. Using new data on Holocene sedimentation rates, we estimated the annual organic carbon accumulation in the pelagic realm (>3000 m water depth) to be approximately 1.8*10**12 g C/year. In the sediments underlying the divergence zone in the Eastern Equatorial Atlantic (EEA), only small amounts of organic carbon accumulate in spite of the high surface water productivity observed in that area. This implies that in the Eastern Equatorial Atlantic, organic carbon accumulation is strongly reduced...

  3. Sedimentation rates calculated for different sites in the South Atlantic

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold

  4. Organic carbon content in surface sediments (TOC)

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold

  5. Surface sediment data

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold

  6. Organic carbon accumulation, LGM

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold

  7. Organic carbon accumulation, Holocene

    Mollenhauer, Gesine; Schneider, Ralph R; Jennerjahn, Tim C; Müller, Peter J; Wefer, Gerold

  8. TOC and CaCO3 contents in surface sediments of the SW Atlantic

    Frenz, Michael; Höppner, René; Stuut, Jan-Berend W; Wagner, Thomas; Henrich, Rüdiger

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