Rb-Sr and Sm-Nd Ages from the Highland Complex of Sri Lanka.
スポンサーリンク
概要
- 論文の詳細を見る
Metaigneous rocks from Gampola and Nuwara Eliya belong to the Highland Complex of Sri Lanka. Rb-Sr and Sm-Nd age data and initial Sr and Nd isotopic ratios document several geological events. (1) Separation of crustal material began in the late Archean. (2) Partial melting of crust took place on a large scale at ca. 2400Ma, leaving metaigneous rocks as restite after extraction of felsic magmas. (3) High-grade metamorphism related to the Pan-African orogeny occurred at 520Ma. (4) Partial melting of crustal material proceeded on a local scale at 490Ma-480Ma, producing slight disturbance to the Rb-Sr whole-rock system.
- 日本学士院の論文
著者
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Shiraishi Kazuyuki
National Institute of Polar Research
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Osanai Yasuhito
Department Of Earth And Planetary System Science Okayama University
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KAGAMI Hiroo
Institute for Study of Earth's Interior, Okayama University
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Owada Masaaki
Department Of Earth Sciences University Of Yamaguchi
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Hiroi Yoshikuni
Department Of Earth Sciences Chiba University
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Hiroi Yoshikuni
Department of Earth Sciences, Chiba University
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