High-temperature metamorphism of the Yushugou ophiolitic slice: Late Devonian subduction of seamount and mid-oceanic ridge in the South Tianshan orogen
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- 作者：Li Zhanga ; b ; lizhang14@hotmail.com" class="auth_mail" title="E-mail the corresponding author ; Zhenmin Jina ; zmjin@cug.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：HP and HT granulite ; Nominally anhydrous minerals ; Seamount ; Ridge subduction ; Accretionary orogeny ; South Tianshan orogen
- 刊名：Journal of Asian Earth Sciences
- 出版年：2016
- 出版时间：15 December 2016
- 年：2016
- 卷：132
- 期：Complete
- 页码：75-93
- 全文大小：4199 K
文摘
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The Yushugou mafic granulites underwent HP and HT metamorphism and deformation during the subduction of mid-oceanic ridge.
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Protoliths of the mafic granulites were probably derived from seamount at the mid-oceanic ridge of the South Tianshan Ocean.
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The mafic granulites have protolith age of ca. 400 Ma and metamorphic age of 390–360 Ma.
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The NAMs of the granulites contain certain but trace amounts of water.