| 西藏朱诺矿集区成矿系列及找矿突破 |
| Received:August 11, 2024 Revised:November 02, 2024 点此下载全文 |
| 引用本文：ZHENG YouYe,WU Song,CI Qiong,CHEN ShuYuan,SHI SuDong,CHEN Xin,LIU Peng,LI JiaZhen.2024.Metallogenic series and exploration breakthroughs of Zhunuo ore district in Xizang[J].Mineral Deposits,43(6):1295~1315 |
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| Author Name | Affiliation | | ZHENG YouYe | School of Earth Resources, China University of Geosciences, Wuhan 430074, Hubei, China
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China | | WU Song | State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China | | CI Qiong | No. 2 Geological Party, Xizang Autonomous Region Geological and Mineral Exploration and Development Bureau, Lhasa 850000, Xizang, China | | CHEN ShuYuan | Xizang Xianglong Copper Industry Limited Company, Lhasa 850000, Xizang, China | | SHI SuDong | Xizang Xianglong Copper Industry Limited Company, Lhasa 850000, Xizang, China | | CHEN Xin | School of Earth Resources, China University of Geosciences, Wuhan 430074, Hubei, China | | LIU Peng | State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China | | LI JiaZhen | State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China |
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| 基金项目:本文得到西藏自治区科技计划（编号：XZ202401ZY0026、XZ202401JD0017）和自然科学基金项目（编号：42372092、U22A20572）联合资助 |
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| 中文摘要:作为中国铜资源规模最大的冈底斯铜多金属成矿带，其东段的找矿工作已取得重大突破，但其西段因被陆相火山岩大面积覆盖导致其找矿勘查工作相对滞后。近年来，在中国地调局、西藏自然资源厅的大力支持下，在冈底斯成矿带西段朱诺矿集区发现并评价了朱诺、北姆朗、次玛班硕、懂师布、落布岗木、巴热拉和唐格等多个超大型、大-中型矿床（点）。按成矿时代可划分为78 Ma的矽卡岩钼铅锌成矿作用，48~65 Ma的热液脉型钼铅锌成矿作用，23 Ma、16~17 Ma及13~14 Ma三期铜钼成矿作用，以及21 Ma的浅成低温热液型金银成矿作用，它们分别构成了晚白垩世矽卡岩型铜铅锌成矿系列、古新世—始新世热液脉型钼铅锌成矿系列及中新世斑岩-浅成低温热液铜钼金银成矿系列。区内斑岩铜矿由南西至北东方向（懂师布→次玛班硕→北姆朗-朱诺）成矿年龄依次减小，总体上表现为多期、多中心成矿的特点，可能受控于深部俯冲印度板片的北向迁移。朱诺矿集区目前已探明铜资源量超过600万t，且北姆朗、次玛班硕、懂师布等区域仍有望进一步突破，有望成为中国又一个千万吨级的铜钼（金）资源基地。 |
| 中文关键词:成矿规律 成矿系列 勘查标识 朱诺矿集区 冈底斯 |
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| Metallogenic series and exploration breakthroughs of Zhunuo ore district in Xizang |
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| Abstract:The eastern segment of the Gangdese giant copper polymetallic metallogenic belt, the largest in China, has achieved notable breakthroughs in the exploration of Cu-Mo polymetallic deposits. In contrast, the western segment, largely covered by continental volcanic rocks, has been debated on its Cu polymetallic potential. Recently, significant support from the China Geological Survey and the Xizang Geology and Mineral Resources Bureau has led to the discovery and evaluation of several large and medium-sized deposits and prospects in this western segment. Notable findings include the Zhunuo, Beimulang, Cimabanshuo, Dongshibu, Luobugangmu, Barela, and Tangge deposits, which may indicate the substantial copper polymetallic mineral potential of the region. The mine-ralization in this area is classified into several types: 78 Ma skarn Mo-Pb-Zn deposit, 48~65 Ma hydrothermal vein-type Mo-Pb-Zn deposit, and approximately 23 Ma, ~16~17 Ma, and ~13~14 Ma porphyry Cu-Mo deposit, along with approximately ~21 Ma epithermal Au-Ag deposit. This series includes Late Cretaceous skarn-type Cu-Pb-Zn mineralization, Paleocene-Eocene hydrothermal vein-type Mo-Pb-Zn mineralization, and Miocene porphyry-epithermal Cu-Mo-Au-Ag mineralization. The porphyry Cu deposits exhibit a trend of progressively younger mineralization ages from southwest to northeast (Dongshibu→Cimabanshuo→Beimulang-Zhunuo), reflecting a multi-phase, multi-center mineralization pattern likely influenced by the northward migration of the deep subducting Indian plate. Over 6 million tons of contained copper metal resources have already been identified in the Zhunuo mineral district, and there are more exploration targets in the areas such as Beimulang, Cimabanshuo and Dongshibu, where have great potential to yield further exploration breakthroughs. This demonstrates significant prospecting potential in the Zhunuo ore district, where may become another Cu-Mo(Au) resource base with about 10-million-tons contained metals in China. |
| keywords:metallogenic patterns metallogenic series exploration indicators Zhunuo ore district Gangdese |
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