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Ontong Java and Kerguelen Plateaux: Cretaceous Icelands?

Ontong Java and Kerguelen Plateaux: Cretaceous Icelands?
Ontong Java and Kerguelen Plateaux: Cretaceous Icelands?
Together with Iceland, the two giant oceanic plateaux, Ontong Java in the western Pacific and Kerguelen/Broken Ridge in the Indian Ocean, are accumulations of mafic igneous rock which were not formed by ‘normal’ seafloor spreading. We compare published geochronological, crustal structure, and subsidence results with tectonic fabric highlighted in new satellite-derived free-air gravity data from the three igneous provinces, and conclude that existing evidence weighs lightly against the Ontong Java and Kerguelen plateaux originating at a seafloor spreading centre.
Iceland, Ontong Java Plateau, Kerguelen Plateau, plumes, hot spots
0016-7649
1-36
Coffin, M.F.
b8285650-5efd-4129-ae91-1cf3f5911e89
Gahagan, L.M.
ff131697-3f67-48e7-b8a7-d5ef831a4c57
Coffin, M.F.
b8285650-5efd-4129-ae91-1cf3f5911e89
Gahagan, L.M.
ff131697-3f67-48e7-b8a7-d5ef831a4c57

Coffin, M.F. and Gahagan, L.M. (1995) Ontong Java and Kerguelen Plateaux: Cretaceous Icelands? Journal of the Geological Society, 32 (1), 1-36.

Record type: Article

Abstract

Together with Iceland, the two giant oceanic plateaux, Ontong Java in the western Pacific and Kerguelen/Broken Ridge in the Indian Ocean, are accumulations of mafic igneous rock which were not formed by ‘normal’ seafloor spreading. We compare published geochronological, crustal structure, and subsidence results with tectonic fabric highlighted in new satellite-derived free-air gravity data from the three igneous provinces, and conclude that existing evidence weighs lightly against the Ontong Java and Kerguelen plateaux originating at a seafloor spreading centre.

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More information

Published date: November 1995
Keywords: Iceland, Ontong Java Plateau, Kerguelen Plateau, plumes, hot spots

Identifiers

Local EPrints ID: 52421
URI: http://eprints.soton.ac.uk/id/eprint/52421
ISSN: 0016-7649
PURE UUID: c6d6add4-2c12-4916-b94d-9082d384f1e9

Catalogue record

Date deposited: 26 Jun 2008
Last modified: 11 Dec 2021 17:31

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Contributors

Author: M.F. Coffin
Author: L.M. Gahagan

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