The Re¤union Subchronozone at ODP Site 981 (Feni Drift, North Atlantic)

At Ocean Drilling Program Site 981, the Re¤union 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 N18O record to an orbitally-tuned...

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Bibliographic Details
Main Authors: J. E. T. Channell A, J. Labs A, M. E. Raymo B
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
2003 Elsevier B.V. All rights reserved. Keywords
magnetic stratigraphy
isotope stratigraphy
Re¤union Subchron
North Atlantic
Rockall Plateau
Feni Drift
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.4123
http://web.clas.ufl.edu/users/jetc/publications/ChannelletalEPSL2003.pdf
Description
Summary:At Ocean Drilling Program Site 981, the Re¤union 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 N18O record to an orbitally-tuned reference record, the duration of the Re¤union 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 Re¤union Subchron trace a series of mainly anticlockwise loops over eastern Asia.

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