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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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 Sun^a ; ^b ; ^{sunjia.china@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Jingwen Mao^a ; ^{jingwenmao@263.net" class="auth_mail" title="E-mail the corresponding author} ; Georges Beaudoin^c ; Xianzhe Duan^d ; ^{duanxianzhe@126.com" class="auth_mail" title="E-mail the corresponding author} ; Fojun Yao^a ; Hegen Ouyang^a ; Yue Wu^e ; Yubin Li^f ; Xuyang Meng^b
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

•: The emplacement of porphyritic intrusions and Cu-Au mineralization took place within a short period (120 ~ 117 Ma) at Duolong.
•: The generation of porphyritic intrusions was caused by a mixing of mantle-derived melts and crust-derived melts.
•: The generation of copper–gold mineralization was related to magma chambers of lower crystallization temperatures and pressures.
•: Magnetite might be a exploration tool due to the variation of Ti and V contents in the barren and mineralized intrusions.