| 刘增仁,漆树基,田培仁,陈正乐,叶雷,余子昌,韩凤彬.新疆乌拉根铅锌成矿带地质特征与找矿靶区优选[J].矿产勘查,2014,5(5):689-698 |
| 新疆乌拉根铅锌成矿带地质特征与找矿靶区优选 |
| Ore-forming geological characteristics and optimization selection of the prospecting targets of the Wulagen lead-zinc metallogenic belt, Wuqia county, Xinjiang |
| 投稿时间：2014-01-06 |
| DOI： |
| 中文关键词: 乌拉根铅锌矿带 层控砂砾岩型 成矿地质特征 靶区优选 新疆 乌恰县 |
| 英文关键词: Wulagen lead-zinc metallogenic belt stratabound glutenite type ore deposit metallogenic geological characteristics optimization of prospecting targets selection Wuqia county Xinjiang |
| 基金项目:十二五国家科技支撑计划项目(编号:2011BAB06B05-03)资助。 |
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| 中文摘要: |
| 乌拉根铅锌矿带的主体位于塔里木盆地西北缘乌恰凹陷中。矿带中的铅锌矿均属层控砂砾岩型,赋存于下白垩统克孜勒苏群第五岩性段(K1kz5)和古新统阿尔塔什组(E1a)中,含矿岩石组合为K1kz5灰白色砂砾岩、砾岩及砂岩和E1a底部的坍塌角砾岩。层控砂砾岩型铅锌矿经历了原始矿源层沉积、盆地卤水油气改造、构造热液叠加等成矿作用。区域上化探异常以Pb-Zn-Cd-Ag-W-Mo-Sr元素组合为特点,矿区前缘元素以Sr、Ba、As、Sb为主,近矿元素为Pb、Zn、Cd、Ag。围岩蚀变表现为岩石的强烈褪色,以褐铁矿化、黄铁矿化、黄钾铁矾化、石膏化、方解石化、天青石化、白云石化为主。以典型矿床的找矿标志、找矿模型为依据,在矿带范围内优选出康西、江额结尔、加斯、硝若布拉克等4个铅锌找矿靶区。 |
| 英文摘要: |
| The main Wulagen lead-zinc metallogenic belt is located in the northwestern margin of the Wuqia depression, Tarim basin, Xinjiang. All of lead-zinc deposits within the metallogenic belt belong to stratabound glutenite type depsoits, the lead-zinc orebodies occur in the fifth lithologic member of Lower Cretaceous Kezilesu Group (K1kz5) and the Palaeocene Aertashi Group (E1a), the ore-bearing lithological combination is the K1kz5 gray glutenite, conglomerate and sandstone and collapsed breccia at the bottom of the E1a. The formation of stratabound glutenite type lead-zinc deposit has experienced the stages of original ore-bearing source layer deposition, reformation of basin oil and gas, and superimposed tectonic hydrothermal mineralization process. The regional geochemical anomaly is characterized with the Pb-Zn-Cd-Ag-W-Mo-Sr combination, the nearby indiactor elements of the orebody are Pb, Zn, Cd and Ag elements, and the distal indicator elements are Sr, Ba, As and Sb elements. Intensive wal rock alteration are well developed including ferritization, pyritization,jarosite,gypsification,calcitization, celestiteion, and dolomitization.Based on prospecting criteria and prospecting model of the typical deposit, four prospecting targets as Kangxi, Jianggejieer, Jiasi and Xiaoruobulake are outlined. |
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