The Réunion Subchronozone at ODP Site 981 (Feni Drift, North Atlantic)

Details The Réunion Subchronozone at ODP Site 981 (Feni Drift, North Atlantic) The Réunion Subchronozone at ODP Site 981 (Feni Drift, North Atlantic)

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003e%26psl.215....1c&link_type=abstract

Earth and Planetary Science Letters, Volume 215, Issue 1-2, p. 1-12.

Physics

6

Magnetic Stratigraphy, Isotope Stratigraphy, Réunion Subchron, North Atlantic, Rockall Plateau, Feni Drift

Scientific paper

At Ocean Drilling Program Site 981, the Réunion Subchron is recorded from the Marine Isotopic Stage (MIS) 81/82 boundary to MIS 79 as a single normal polarity zone spanning the 2.115-2.153-Ma interval. According to the age model, produced by matching the Site 981 δ18O record to an orbitally-tuned reference record, the duration of the Réunion Subchron (38 kyr) is almost four times that assumed in current geomagnetic polarity timescales. High interval sedimentation rates (18 cm/kyr) during MIS 81 at Site 981 have resulted in an unusually detailed record of the Subchron. Virtual geomagnetic poles during the onset and demise of the Réunion Subchron trace a series of mainly anticlockwise loops over eastern Asia.

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