Origin of selective enrichment of Cu and Au in sulfide deposits formed at immature back-arc ridges: Examples from the Lau and Manus basins
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- 作者：Zheng-Gang Li ; Feng-You Chu ; chu@sio.org.cn" class="auth_mail" title="E-mail the corresponding author ; Yan-Hui Dong ; Xiao-Hu Li ; Ji-Qiang Liu ; Ke-Hong Yang ; Li-Mei Tang
- 关键词：Magma differentiation ; Cu behavior ; Oxygen fugacity ; Water content ; Crystallization pressure ; Manus and Lau basins
- 刊名：Ore Geology Reviews
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：74
- 期：Complete
- 页码：52-62
- 全文大小：1911 K
文摘
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Oxygen fugacity (fO2), water content and crystallization pressure were modeled for the primary magmas
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Neither extremely high nor low fO2 is favorable for Cu enrichment during magma evolution.
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Both high water content and high pressure are not favorable for Cu enrichment.
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Cu content dose not increase significantly until the onset of plagioclase crystallization in an oxidized magma