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http://hdl.handle.net/2122/2890
Authors: | Venuti, A.* Florindo, F.* |
Title: | Magnetostratigraphy and environmental magnetism of two Quaternary deep-sea gravity cores from the west Pacific Southern Ocean | Journal: | Geochemistry Geophysics Geosystems | Series/Report no.: | 5 / 12 (2004) | Publisher: | AGU | Issue Date: | 2004 | DOI: | 10.1029/2004GC000810 | Keywords: | paleomagnetism Quaternary sedimentary cores Southern Ocean |
Subject Classification: | 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism | Abstract: | We present new paleomagnetic data for Quaternary u channel samples from two deep-sea gravity cores from the west Pacific Southern Ocean. These cores were recovered in the Antarctic summers 1995–1996 during the oceanographic cruise of the R/V Italica. One was recovered beneath the present-day Antarctic Polar Front (Anta 95-157), and the other is from within the Antarctic Zone (Anta 96-16). The Matuyama- Brunhes boundary has been identified in both cores, with a longer history of sedimentation available in Anta 96-16. A detailed rock magnetic study shows discrete occurrences of ice rafted debris, which were influenced by 100-kyr orbital eccentricity variations during the Brunhes Chron. This is consistent with the main periodicity of the climate system since the mid-Pleistocene climate transition. |
Appears in Collections: | Article published / in press |
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