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Origin of continental components in Indian Ocean basalts: evidence from Elan Bank (Kerguelen Plateau, ODP Leg 183, Site 1137)

Weis, D., Ingle, S., Damasceno, D., Frey, F.A., Nicolaysen, K., Barling, J. and Coffin, M.F. (2001) Origin of continental components in Indian Ocean basalts: evidence from Elan Bank (Kerguelen Plateau, ODP Leg 183, Site 1137) Geology, 29, (2), pp. 147-150. (doi:10.1130/0091-7613(2001)029<0147:OOCCII>2.0.CO;2).

Record type: Article


Basalts forming the floor of the Indian Ocean are geochemically distinct from those of the Atlantic and Pacific Oceans. These differences have been attributed to a deeply recycled continental component or to widespread dispersion of plume-type mantle within the Indian Ocean asthenosphere. The discovery of Proterozoic continental crustal rocks within the uppermost basaltic basement of Elan Bank, part of the Kerguelen Plateau, shows instead that direct shallow-level contamination of basaltic magmas by isolated continental crust fragments may have produced the anomalous isotopic ratios of some Indian Ocean basalts.

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Published date: February 2001
Keywords: Indian Ocean, Kerguelen plume, continental contamination, large igneous province, Kerguelen Plateau


Local EPrints ID: 52439
ISSN: 0091-7613
PURE UUID: 8ae206e2-cd93-46f0-9821-f4d44042caa5

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Date deposited: 26 Jun 2008
Last modified: 17 Jul 2017 14:40

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Author: D. Weis
Author: S. Ingle
Author: D. Damasceno
Author: F.A. Frey
Author: K. Nicolaysen
Author: J. Barling
Author: M.F. Coffin

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