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Spielhagen, Robert F; Bonani, Georges; Eisenhauer, Anton; Frank, Martin; Frederichs, Thomas; Kassens, Heidemarie; Kubik, Peter W; Mangini, Augusto; Nørgaard-Pedersen, Niels; Nowaczyk, Norbert R; Schäper, Stefan; Stein, Ruediger; Thiede, Jörn; Tiedemann, Ralf; Wahsner, Monika (1997): A high-resolution sedimentology and age determination of core PS2185 from the central Arctic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.728693, Supplement to: Spielhagen, RF et al. (1997): Arctic Ocean evidence for late Quaternary initiation of northern Eurasian ice sheets. Geology, 25(9), 783-786, https://doi.org/10.1130/0091-7613(1997)025%3C0783:AOEFLQ%3E2.3.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.
Coverage:
Latitude: 87.529300 * Longitude: 144.166200
Date/Time Start: 1991-09-02T00:00:00 * Date/Time End: 1991-09-02T00:00:00
Event(s):
PS2185-3 (PS19/186) * Latitude: 87.529300 * Longitude: 144.166200 * Date/Time: 1991-09-02T00:00:00 * Elevation: -1073.0 m * Penetration: 0.33 m * Recovery: 0.37 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS2185-6 (PS19/186) * Latitude: 87.529300 * Longitude: 144.166200 * Date/Time: 1991-09-02T00:00:00 * Elevation: -1073.0 m * Penetration: 8.4 m * Recovery: 8.1 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Kasten corer (KAL) * Comment: offset to PS2185-3 = 6 cm
Size:
4 datasets

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