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Physical properties of sediment core PS2736-6

Publication Date
DOI: 10.1594/pangaea.50586
  • Ark-Xi/1
  • Awi_Paleo
  • Density
  • Wet Bulk
  • Density Measuring System (Dms)
  • Gravity Corer (Kiel Type)
  • Laptev Sea
  • Paleoenvironmental Reconstructions From Marine Sediments @ Awi
  • Polarstern
  • Porosity
  • Ps2736-6
  • Ps36
  • Ps36/023
  • Quaternary Environment Of The Eurasian North
  • Queen
  • Susceptibility
  • Susceptibility Unit Awi
  • Ms2C
  • 145 Mm
  • Velocity
  • Compressional
  • Amplitude
  • Velocity
  • Compressional Wave
  • Archaeology
  • Earth Science


Ghostscript wrapper for G:\Users\rsieger.DMAWI\Documents\Umbruch 79 (2).pdf INTRODUCTION The Pleistocene sediments in the Central Arctic Ocean (CAO) are generally composed of fine-grained siliciclastic muds with variable contents of sand and gravel that were deposited in a glacimarine setting. Biogenic components are of minor impor- tance but foraminifers and coccoliths may be common in certain intervals (e.g. CLARK et al. 1980, POORE et al. 1993, BISCHOF & DARBY 1997, POLYAK et al. 2004, NØRGAARD- PEDERSEN et al. 1998, SPIELHAGEN et al. 2004, STEIN et al. 2010b). It has been recognized already during earlier studies that Arctic Ocean sediments are also characterized by distinct alternations of brownish and light brownish colours (e.g., ERICSON et al. 1964, HUNKINS et al. 1971, DARBY et al. 1989 cum lit.). Comprehensive sedimentological studies, based on identification of sedimentary textures and structures by visual examination of hundreds of sediment cores, x-radiography images, colour variations and petrographic composition, led CLARK et al. (1980) to introduce a standard lithostratigraphy (Units A to M) for structural highs in the Amerasia Basin of the CAO. This lithostratigraphy has been confirmed by subse- quent sedimentological studies, and the units have only been slightly modified and supplemented by new units (MINICUCCI & CLARK 1983, MUDIE & BLASCO, 1985, CLARK et al. 1990). The most conspicuous lithologic marker beds such as the fora- minifer- and manganese-rich brown layers, and distinct carbo- nate-rich pink-white and white layers have been frequently used to correlate sediment cores within the Amerasia Basin (e.g., PHILLIPS & GRANTZ 1997, 2001, POLYAK et al. 2004, NØRGAARD-PEDERSEN et al. 2007b, STEIN et al. 2010a,b). Since CLARK et al. (1980) have introduced their standard litho- stratigraphy, sediment core descriptions have often been used exclusively in order to identify the standard units for strati- graphic purposes rather than to interpret the sedimentary texture and str

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