Spielhagen, Robert, Bonani, Gerges, Eisenhauer, Anton , Frank, Martin , Frederichs, Thomas, Kassens, Heidemarie, Kubik, Peter W., Mangini, Augusto, Nörgaard-Pedersen, Niels, Nowaczk, Norbert R., Schäper, Stefan, Stein, Rüdiger, Thiede, Jörn , Tiedemann, Ralf and Wahsner, Monika (1997) Arctic Ocean evidence for late Quaternary initiation of northern Eurasian ice sheets. Geology, 25 (9). pp. 783-786. DOI 10.1130/0091-7613(1997)​025<0783:AOEFLQ>​2.3.CO;2.

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Abstract

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.

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