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Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean

Citation

Nicolaysen, K and Bowring, S and Frey, F and Weis, D and Ingle, S and Pringle, MS and Coffin, MF, Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean, Geology (Boulder), 29, (3) pp. 235-238. 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<0235:...

DOI: doi:10.1130/0091-7613(2001)029<0235:POPGBG>2.0.CO;2

Abstract

At Elan Bank of the Kerguelen Plateau in the southeast Indian Ocean, Leg 183 of the Ocean Drilling Program recovered clasts of garnet-biotite gneiss in a fluvial conglomerate intercalated with basalt flows. U-Pb and Pb-Pb dates of zircons and monazites in these clasts and an overlying sandstone range from 534 to 2547 Ma, which is much older than the surrounding Indian Ocean seafloor. These dates show that old continental crust resides in the shallow crust of the oceanic Kerguelen Plateau and that the breakup of Gondwana dispersed continental fragments into the nascent Indian Ocean lithosphere.

Item Details

Item Type:Refereed Article
Keywords:Kerguelen Plateau geochronology continental crust Proterozoic Indian Ocean.
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:73817
Year Published:2001
Web of Science® Times Cited:37
Deposited By:Research Division
Deposited On:2011-10-26
Last Modified:2011-11-09
Downloads:5 View Download Statistics

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