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Structure and Evolution of the Central Kerguelen Plateau Deduced from Seismic Stratigraphic Studies and Drilling at Site 747

Citation

Munschy, M and Fritsch, B and Schlich, R and Fezga, F and Rotstein, Y and Coffin, MF, Structure and Evolution of the Central Kerguelen Plateau Deduced from Seismic Stratigraphic Studies and Drilling at Site 747, Proceedings of the Ocean Drilling Program, Scientific Results, 120 pp. 881-893. ISSN 1096-7451 (1992) [Refereed Article]


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Copyright Statement

Copyright 1992 Integrated Ocean Drilling Program Management International, Inc.

DOI: doi:10.2973/odp.proc.sr.120.125.1992

Abstract

The structure and evolution of the Central Kerguelen Plateau (CKP), located between 54�-57�S and 61�-84�E, is derived from the seismic stratigraphic interpretation of multichannel seismic data and from Ocean Drilling Program results at Site 747. The CKP formed 120-110 m.y. ago by excessive volcanic activity at the axis of the spreading ridge that separated India from Antarctica. At 72 Ma, a major pre-rift tectonic episode stretched the basement of the CKP in an east-west direction; the 77�E Graben consists of several rift units, somewhat similar to the structure observed in the East African continental rift system. At 42 Ma, the breakup between the Kerguelen Plateau and Broken Ridge was accompanied by a period of nonsedimentation of about 15-m.y. duration. After the breakup, the sedimentation was generally continuous but evolved during the Pliocene-Pleistocene in response to climate changes.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Marine Geoscience
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Coffin, MF (Professor Mike Coffin)
ID Code:73897
Year Published:1992
Deposited By:Research Division
Deposited On:2011-10-27
Last Modified:2012-06-26
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