Arctic Ocean evidence for late Quaternary initiation of northern Eurasian ice sheets

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doi: 10.1130/0091-7613(1997)025<0783:AOEFLQ>2.3.CO;2
Author(s): Spielhagen, Robert F.; Bonani, Georges; Eisenhauer, Anton; Frank, Martin; Frederichs, Thomas; Kassens, Heidemarie; Kubik, Peter W.; Mangini, Augusto; Norgaard-Pedersen, Niels; Nowaczyk, Norbert R.; Schäper, Stefan; Stein, Ruediger; Thiede, Jörn; Tiedemann, Ralf; Wahsner, Monika
Author Affiliation(s): Primary:
GEOMAR Research Center for Marine Geosciences, Kiel, Federal Republic of Germany
Other:
ETH Hönggerberg, Institute for Particle Physics, Switzerland
Göttingen University, Geochemical Institute, Federal Republic of Germany
Heidelberg Academy of Sciences, Federal Republic of Germany
University of Bremen, Department of Geosciences, Federal Republic of Germany
GeoForschungsZentrum Potsdam, Federal Republic of Germany
Alfred-Wegener Institute for Polar and Marine Research, Federal Republic of Germany
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 25(9), p.783-786. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. 30 refs.; illus., incl. 1 table, sketch map
Summary: A high-resolution multiparameter stratigraphy allows the identification of late Quaternary glacial and interglacial cycles in a central Arctic Ocean sediment core. Distinct sandy layers in the upper part of the otherwise fine-grained sediment core from the Lomonosov Ridge (lat 87.5°N) correlate to four major glacials since ca. 0.7 Ma. The composition of these ice-rafted terrigenous sediments points to a glaciated northern Siberia as the main source. In contrast, lithic carbonates derived from North America are also present in older sediments and indicate a northern North American glaciation since at least 2.8 Ma. We conclude that large-scale northern Siberian glaciation began much later than other Northern Hemisphere ice sheets.
Year of Publication: 1997
Key Words: 03 Geochronology; 24 Surficial Geology, Quaternary Geology; Absolute age; Arctic Ocean; Asia; C-14; Carbon; Cenozoic; Cores; Cyclic processes; Dates; Eurasia; Glacial geology; Glacial sedimentation; Glaciation; Glaciomarine sedimentation; Ice rafting; Ice sheets; Interglacial environment; Isotopes; Lomonosov Ridge; Marine sedimentation; Marine sediments; Provenance; Quaternary; Radioactive isotopes; Sedimentation; Sediments; Siberia; Terrigenous materials; Upper Quaternary
Coordinates: N873200 N873200 E1445600 E1442200
Record ID: 1997072396
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