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...
Main Authors: | , , |
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Format: | Text |
Language: | English |
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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 |
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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