New evidence for Palaeoproterozoic high grade metamorphism in the Trivandrum Block, Southern India
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- 作者：Simon L. Harleya ; simon.harley@ed.ac.uk" class="auth_mail" title="E-mail the corresponding author ; V. Nandakumarb
- 关键词：Zircon ; Monazite ; Geochronology ; Gondwana ; Trivandrum Block
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：280
- 期：Complete
- 页码：120-138
- 全文大小：4406 K
文摘
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Zircon demonstrates 1.92 Ga high-T metamorphism in the Trivandrum Block.
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Monazites preserve a vestige of this event.
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The high-T event is older than some of the basement orthogneisses in the Block.
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The overprinting Neoproterozoic-Cambrian granulite was long-lived (45 Myr).
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At least some of the paragneisses in the Trivandrum Block are polymetamorphic.