Partial melting of subducted paleo-Pacific plate during the early Cretaceous: Constraint from adakitic rocks in the Shaxi porphyry Cu-Au deposit, Lower Yangtze River Belt
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- 作者：Jianghong Denga ; Xiaoyong Yanga ; xyyang555@163.com" class="auth_mail" title="E-mail the corresponding author ; Shuang Lib ; Huangling Gua ; Abdul Shakoor Mastoia ; Weidong Sunc
- 关键词：LYRB ; Shaxi ; Adakite ; Porphyry Cu deposit ; Slab melting
- 刊名：Lithos
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：262
- 期：Complete
- 页码：651-667
- 全文大小：3707 K
文摘
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Shaxi calc-alkaline adakitic rocks are from partial melting of paleo-Pacific plate.
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Shaxi Bt-gabbros are from adakitic melt metasomatized mantle.
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The sources of Shaxi adakitic rocks are OC (MORB + sediments) + LCC + UCC.
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Other LYRB adakitic rocks are from mantle melting with LCC + UCC assimilated.
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These adakitic rocks have high oxygen fugacities and favor Cu–Au mineralization.