TY - JOUR
T1 - Origin of sediment pellets from the Arctic seafloor
T2 - sea ice or icebergs?
AU - Goldschmidt, P. M.
AU - Pfirman, S. L.
AU - Wollenburg, I.
AU - Henrich, R.
N1 - Funding Information:
Acknowledgements--We are indebted to Sveinung L6set, Hans Jensen and the rest of the Polarstern ARK VI/1 Norwegian team for providing us with samples of iceberg sediment. Drs Dorothee Spiegler and Robert Spielhagen identified the biogenic matter and the rock fragment lithology, respectively, in the seafloor sediment pellet samples. Marion Baumann, Michaela Kubisch, Uwe Pagels and Robert Spielhagen graciously provided their not-yet-published data for the correlations. Albert von Doetinchem operated the GEOMAR SEM and Wilma Rehder made the radiographs. We would also like to thank the captains and chief scientists of the four research cruises: Meteor II/2, Capt. Friedrich Bruns and Dr J6rn Thiede; Polarstern ARK IV/3, Capt. Heinz Jonas and Dr Jfrn Thiede; Polarstern ARK VI/1, Capt. Lothar Suhrmeyer and Dr Joachim Schwarz; Polarstern ARK VI/2, Capt. Lothar Suhrmeyer and Dr Jens Meincke. This paper benefitted greatly from reviews by Peter Barnes, Anders Elverh0i, Robert Gilbert, Bruce Molnia and Erk Reimnitz. Financial support was provided by the Bundesministerium ffir Forschung und Technologie, the Deutsche Forschungsgemeinschaft, the National Science Foundation, and the U.S. Office of Naval Research. This is publication no. 129 of the Special Research Project (SFB) 313 at the University of Kiel.
PY - 1992/9
Y1 - 1992/9
N2 - Sediment cores from the Norwegian and Greenland Seas and the Nansen Basin were studied to determine the origin of sediment pellets, centimetre-sized aggregations of clay to sandsized sediment occurring in the cores. By comparing the grain size, grain shape and composition of the pellet sediments to sediments collected directly from the surfaces of sea ice in the Nansen Basin and from icebergs in the Barents Sea, the pelleted sediment was found to be more similar to that in the icebergs than that on the sea ice. The pellets may be formed on, in or under a glacier or during transport on/in an iceberg. When icebergs overturn or melt, the pellets fall out and are consolidated enough to survive a drop of up to 4 km to the ocean bottom and to retain their integrity even after burial on the seafloor.
AB - Sediment cores from the Norwegian and Greenland Seas and the Nansen Basin were studied to determine the origin of sediment pellets, centimetre-sized aggregations of clay to sandsized sediment occurring in the cores. By comparing the grain size, grain shape and composition of the pellet sediments to sediments collected directly from the surfaces of sea ice in the Nansen Basin and from icebergs in the Barents Sea, the pelleted sediment was found to be more similar to that in the icebergs than that on the sea ice. The pellets may be formed on, in or under a glacier or during transport on/in an iceberg. When icebergs overturn or melt, the pellets fall out and are consolidated enough to survive a drop of up to 4 km to the ocean bottom and to retain their integrity even after burial on the seafloor.
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U2 - 10.1016/S0198-0149(06)80020-8
DO - 10.1016/S0198-0149(06)80020-8
M3 - Article
AN - SCOPUS:0027040480
SN - 0198-0149
VL - 39
SP - S539-S565
JO - Deep Sea Research Part A, Oceanographic Research Papers
JF - Deep Sea Research Part A, Oceanographic Research Papers
IS - 2 PART 1
ER -