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Timing of hot spot-related volcanism and the breakup of Madagascar and India


Storey, M and Mahoney, JJ and Saunders, AD and Duncan, RA and Kelley, SP and Coffin, MF, Timing of hot spot-related volcanism and the breakup of Madagascar and India, Science, 267, (5199) pp. 852-855. ISSN 0036-8075 (1995) [Refereed Article]

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Copyright 1995 The American Association for the Advancement of Science

DOI: doi:10.1126/science.267.5199.852


Widespread basalts and rhyolites were erupted in Madagascar during the Late Cretaceous. These are considered to be related to the Marion hot spot and the breakup of Madagascar and Greater India. Seventeen argon-40/argon-39 age determinations reveal that volcanic rocks and dikes from the 1500-kilometer-long rifted eastern margin of Madagascar were emplaced rapidly (mean age = 87.6 0.6 million years ago) and that the entire duration of Cretaceous volcanism on the island was no more than 6 million years. The evidence suggests that the thick lava pile at Volcan de l'Androy in the south of the island marks the focal point of the Marion hot spot at 88 million years ago and that this mantle plume was instrumental in causing continental breakup.

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
UTAS Author:Coffin, MF (Professor Mike Coffin)
ID Code:73915
Year Published:1995
Web of Science® Times Cited:469
Deposited By:Research Division
Deposited On:2011-10-28
Last Modified:2011-11-01
Downloads:4 View Download Statistics

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