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Timing of hot spot-related volcanism and the breakup of Madagascar and India
Citation
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 Statement
Copyright © 1995 The American Association for the Advancement of Science
DOI: doi:10.1126/science.267.5199.852
Abstract
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 ¡¾ 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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