冈底斯-藏南Cu- Au- Pb- Zn- Mo成矿带成矿地质特征与资源潜力分析
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Geological Features and Resource Potential of the Gangdise Southern Tibet Cu- Ag- Pb- Zn- Mo Metallogenic Belt
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    摘要:

    近年来随着西部地质找矿工作的广泛开展,冈底斯藏南一带的找矿成果不断涌现,逐渐成为我国重要的资源基地之一。本文按照成矿区划的研究思路,结合全国矿产资源潜力评价的最新成果,选取区带内典型矿床仔细剖析,通过综合地质分析,确定新的重要成矿部署区带,厘定边界,即在原来重要成矿区带基础上向南延伸,将其命名为“冈底斯-藏南Cu- Au- Pb- Zn- Mo成矿带”。按照成矿区带的研究思路,结合区域成矿地质背景分析,依据Ⅲ级成矿带的划分标准,初步建立了区带内Cu- Au- Pb- Zn- Mo成矿带成矿谱系,可以看到燕山期和喜马拉雅期是该区带成矿作用集中爆发时期,形成了区带内的主要矿床成矿系列。区带内产出的主要矿种以及矿床类型与复杂的区域动力学背景演化有着密切关系。冈底斯复杂的多岛弧-盆拼合体经历了三次构造体制转换和复杂的演化历史,具有十分优越的成矿地质背景和控矿因素。研究区主要成矿类型为斑岩型、矽卡岩型铜钼金多金属矿、浅成低温热液型和其他岩浆热液型多金属矿。最后结合最近找矿成果,认为本区铜、金、铅、锌和钼资源潜力巨大,为下一步勘查部署的主攻矿种,同时本区划分了5个远景区,其中1个为重点远景区,4个为一般远景区,对今后区带内指导部署矿产勘查工作作了重要的准备。

    Abstract:

    With extensive engagement of the geological prospecting and the latest prospecting achievements in western areas, the Gangdese- Southern Tibet Cu- Ag- Pb- Zn- Mo metallogenic belt has become one of the most critical resource areas in China. Combined with strategic planning and the national latest research result, this study re defined some boundaries and extended this metallogenic belt southward through selecting typical ore deposits and analyzing their geological backgrounds, and named it the Gangdese South Tibet Cu- Au- Pb- Zn- Mo metallogenic belt. The metallogenic linage for this belt has been established. Yanshanian and Himalayan periods are two main periods for mineralization in this area, forming a series of major mineral resources. The major minerals and deposit types are closely related to the complicated regional dynamic evolution. The collage of multiple island arc and basins in Gangdise experienced three tectonic mechanic transformation and complicated evolution history; therefore, it is regarded as the potential area with superior metallogenic background. The main ore types for this study area include porphyry , skarn type Cu- Mo polymetallic deposits, epithermal polymetallic mineral deposits, and others. Combined with the latest prospecting achievements, it can be concluded that this area is rich in copper, gold, zinc and molybdenum and five metallogenic prospective areas were determined, including one key inspecting area and four average areas. This has done some preparation for deploying the next inspecting work.

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席伟杰,肖克炎.2016.冈底斯-藏南Cu- Au- Pb- Zn- Mo成矿带成矿地质特征与资源潜力分析[J].地质学报,90(7):1636-1649.
XI Weijie, XIAO Keyan.2016. Geological Features and Resource Potential of the Gangdise Southern Tibet Cu- Ag- Pb- Zn- Mo Metallogenic Belt[J]. Acta Geologica Sinica,90(7):1636-1649.

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  • 在线发布日期: 2016-07-27
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