Geochronology and geochemistry of porphyritic intrusions in the Duolong porphyry and epithermal Cu-Au district, central Tibet: Implications for the genesis and exploration of porphyry copper deposits
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- 作者：Jia Suna ; b ; sunjia.china@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Jingwen Maoa ; jingwenmao@263.net" class="auth_mail" title="E-mail the corresponding author ; Georges Beaudoinc ; Xianzhe Duand ; duanxianzhe@126.com" class="auth_mail" title="E-mail the corresponding author ; Fojun Yaoa ; Hegen Ouyanga ; Yue Wue ; Yubin Lif ; Xuyang Mengb
- 关键词：Porphyry copper deposits ; Emplacement depth ; Amphibole ; Magnetite ; Mineral exploration
- 刊名：Ore Geology Reviews
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：80
- 期：Complete
- 页码：1004-1019
- 全文大小：3237 K
文摘
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The emplacement of porphyritic intrusions and Cu-Au mineralization took place within a short period (120 ~ 117 Ma) at Duolong.
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The generation of porphyritic intrusions was caused by a mixing of mantle-derived melts and crust-derived melts.
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The generation of copper–gold mineralization was related to magma chambers of lower crystallization temperatures and pressures.
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Magnetite might be a exploration tool due to the variation of Ti and V contents in the barren and mineralized intrusions.
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