Cenozoic high-K alkaline magmatism and associated Cu-Mo-Au mineralization in the Jinping-Fan Si Pan region, southeastern Ailao Shan-Red River shear zone, southwestern China-northwestern Vietnam

My Dung Tran; Junlai Liu; Quang Luat Nguyen; Yue Chen; Yuan Tang; Zhijie Song; Zhaochong Zhang; Zhidan Zhao

首页> 外文期刊>Journal of Asian earth sciences >Cenozoic high-K alkaline magmatism and associated Cu-Mo-Au mineralization in the Jinping-Fan Si Pan region, southeastern Ailao Shan-Red River shear zone, southwestern China-northwestern Vietnam

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Cenozoic high-K alkaline magmatism and associated Cu-Mo-Au mineralization in the Jinping-Fan Si Pan region, southeastern Ailao Shan-Red River shear zone, southwestern China-northwestern Vietnam

机译：新生代高K碱金刚岩石和铜山山脉山区山区山区山南东南部，越南西南西北部

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The Jinping-Fan Si Pan (JFP) Cenozoic magmatic and Cu-Mo-Au metallogenic belt in the southeastern part of the Ailao Shan shear zone host the Tongchang, Chang'an, Habo, and Chinh Sang Cu-Mo-Au deposits. These deposits form an integrated epithermal-porphyry regional mineralization system associated with 40-32 Ma high-K alkaline magmatism. The magmatic rocks in the belt have relatively low TiO_2 (＜0.73wt%), P_2O_5 (＜0.29wt%), and FeO' (＜4.99wt%), and high Na_2O (2.86-4.75 wt%) and K_2O (4.01-7.98 wt%). They also have high contents of incompatible trace elements, and are enriched in L1LE (Rb, Ba, K, Sr) and LREE. They have marked Nb, Ta, Ti and P depletion in primitive mantle-normalized spider-grams, and plot close to the EMU mantle field in the Sr-Nd isotopic diagram. These characteristics are similar to those of the Eocene high-K alkaline rocks along the northern Ailao Shan belt, eastern Tibet plateau. The sulfur and lead isotope analyses of sulfide minerals from both the ores and related magmatic rocks confirm the involvement of a magmatic ore fluid. The Cenozoic alkaline intrusions and Cu-Mo-Au mineralization in the JFP were formed prior to the initiation of left-lateral shearing along the Ailao Shan shear zone. The magmas appear to have been derived from enriched mantle, possibly with mixing of materials from the buried Tethyan oceanic lithosphere, and/or crust.

机译：金平风机（JFP）新生代岩浆和Cu-Mo-Au成矿带在东南部的北部山剪区举办了桐城，长安，哈夫和中国沉淀。这些沉积物形成了一种与40-32 mA高K碱性岩浆有关的综合术术 - 斑岩区域矿化系统。皮带中的岩石岩石具有相对低的TiO_2（<0.73wt％），P_2O_5（<0.29wt％）和FeO'（<4.99wt％）和高Na_2O（2.86-4.75wt％）和K_2O（4.01- 7.98 wt％）。它们还具有高含量的不相容痕量元素，并富含L1LE（RB，BA，K，SR）和LREE。它们在原始地幔归一化的蜘蛛_中标记为Nb，Ta，Ti和p耗尽，并在SR-ND同位素图中靠近EMU Mantle场的绘图。这些特性与沿着西藏高原东部北部北部的群岛高K碱性岩石相似。来自矿石和相关岩浆岩石中的硫化物矿物的硫和铅同位素分析证实了岩浆矿石流体的累及。在JFP中在沿着Ailao Shan剪切区开始左侧剪切之前形成JFP中的新生代碱性入侵和Cu-Mo-Au矿化。岩浆似乎是来自富含富含富含的地幔，可能是用埋地的Tethyan海洋岩石圈和/或地壳的材料混合。

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来源
《Journal of Asian earth sciences》 |2014年第2期|858-872|共15页
作者
My Dung Tran; Junlai Liu; Quang Luat Nguyen; Yue Chen; Yuan Tang; Zhijie Song; Zhaochong Zhang; Zhidan Zhao;
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State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China Hanoi University of Mining and Geology Hanoi Viet Nam;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China Hanoi University of Mining and Geology Hanoi Viet Nam;

Hanoi University of Mining and Geology Hanoi Viet Nam;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China;

State Key Laboratory of Geological Processes and Mineral Resources China University of Ceosciences Beijing 100083 China;

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Jinping-Fan Si Pan; Cenozoic high potassic alkaline magmatism; Ailao Shan-Red River shear zone; Porphyry deposit; Epithermal deposit;

机译：金平风机;新生代高步碱性岩浆岩浆;艾苏山红河剪切区;斑岩矿床;盖子沉积物;

Cenozoic high-K alkaline magmatism and associated Cu-Mo-Au mineralization in the Jinping-Fan Si Pan region, southeastern Ailao Shan-Red River shear zone, southwestern China-northwestern Vietnam

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