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

Citation

Weis, D and Ingle, S and Damasceno, D and Frey, FA and Nicolaysen, K and Barling, J and Shipboard Scientific Party, Leg 183, Origin of continental components in Indian Ocean basalts: evidence from Elan Bank (Kerguelen Plateau, ODP Leg 183, Site 1137), Geology (Boulder), 29, (2) pp. 147-150. ISSN 0091-7613 (2001) [Refereed Article]


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Copyright Statement

Copyright 2001 Geological Society of America

Official URL: http://dx.doi.org/10.1130/0091-7613(2001)029<0147:...

DOI: doi:10.1130/0091-7613(2001)029<0147:OOCCII>2.0.CO;2

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:Indian Ocean Kerguelen plume continental contamination large igneous province Kerguelen Plateau
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:Shipboard Scientific Party, Leg 183 (Professor Mike Coffin)
ID Code:73850
Year Published:2001
Web of Science® Times Cited:43
Deposited By:Research Division
Deposited On:2011-10-27
Last Modified:2011-11-08
Downloads:0

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