EPMA u-th-pb monazite dating of metamorphic rocks from the mogok metamorphic belt, central myanmar

Kazuhiro Yonemura, Yasuhito Osanai, Nobuhiko Nakano, Tatsuro Adachi, Punya Charusiri, Tun Naing Zaw

研究成果: Contribution to journalLetter査読

12 被引用数 (Scopus)

抄録

The Mogok Metamorphic Belt (MMB), situated in central Myanmar, contains an assemblage of high-grade metamorphic rocks believed to have been formed during a regional Early Eocene-Oligocene metamorphic event. We newly found Grt-Opx granulite in the Mogok area, which was formed under pressure-temperature (P-T ) conditions estimated as being 6.5-8.7 kbar and 800-950 °C. Based on the results of EPMA U-Th-Pb Mnz dating, the central MMB, which runs through the Mogok, Mandalay, and Meikthila areas, is characterized by an Eocene to Oligocene deformation and fluid infiltration event. In addition, several Mnz grains from the Meikthila and Mandalay areas record ages of the Late Triassic (~ 200 Ma) and Cretaceous (~ 80 Ma and 110 Ma) geologic events.

本文言語英語
ページ(範囲)184-188
ページ数5
ジャーナルJournal of Mineralogical and Petrological Sciences
108
3
DOI
出版ステータス出版済み - 2013

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

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