2016年4月
U-Pb zircon geochronology in the western part of the Rayner Complex, East Antarctica
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES
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- 巻
- 111
- 号
- 2
- 開始ページ
- 104
- 終了ページ
- 117
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2465/jmps.150811
- 出版者・発行元
- JAPAN ASSOC MINERALOGICAL SCIENCES
U-Pb zircon geochronology was applied to nine metasedimentary samples collected from Mt. Yuzhnaya, Condon Hills, and Mt. Lira in the inland region of the Rayner Complex of western Enderby Land, East Antarctica, in order to define the eastern limits of the western Rayner Complex that underwent the Pan-African metamorphism and to evaluate potential source areas of metasedimentary rocks. Condon Hills and Mt. Lira revealed metamorphic ages of similar to 894 and similar to 934 Ma, respectively, which are consistent with previously reported metamorphism in association with Rayner Structural Episode (RSE). Mt. Yuzhnaya samples affected by the RSE contain zircon grains rejuvenated during 590-570 Ma, which indicates that the Pan-African reworking can be extended up to Mt. Yuzhnaya. On the other hand, the Condon Hills samples include Archean detritus, and the age peaks from 3850 to 2491 Ma are the oldest components in the Rayner Complex of western Enderby Land. There is no evidence of reworked Napier Complex rocks in the studied Rayner samples.
- リンク情報
- ID情報
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- DOI : 10.2465/jmps.150811
- ISSN : 1345-6296
- eISSN : 1349-3825
- Web of Science ID : WOS:000375803000005