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江西相山邹家山-石洞断裂带及其控矿作用 被引量:45

Feature of Zoujiashan-Shidong Structure and its controlling over uranium deposit
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摘要 邹家山-石洞断裂构造带(又称邹-石构造带)由几组大致平行的断裂组成,总体走向为30°~40°.倾向Nw或SE,倾角65°~85°,深切基底达10km,属区域性NE向走滑断层。根据断裂构造的发育程度、构造联合控矿作用等特点,自北向南将邹-石构造带分为石马山段、邹家山段、书塘段和石洞段。研究构造带的铀矿化蚀变特征及构造控矿规律发现,邹-石构造带在不同地段控矿形式不同,按容矿位置可分为两类,即主断裂容矿和旁侧次级断裂容矿。邹-石构造带的铀矿化作用明显分为两期,邹-石构造带附近的铀矿床均存在铀-赤铁矿型矿化蚀变,表明邹-石构造带对成矿的重要作用。相山矿田各矿床内矿带的展布表明,主要矿带走向的法线方向总是指向相山盆地的特定区域。在总结已知矿床规律的基础上,笔者认为邹-石构造带仍然是相山盆地最具找矿潜力的地区之一,书塘地区是邹-石构造带的首选找矿靶区。 This paper has analyzed the spatial formation characteristics of Zoujiashan-Shidong structure in detail: The fault zone is composed by several approximately parallel faults, with 30°-40° trending and NW or SE dipping at 65°-85°; which penetrate the base to the depth of 10 km and fall into the kind of strike-slip fault. According to the features of the fault and the characters of deposits-controlled by the structures, Zhou-Shi structure can be divided into Shimashan section, Zoujiashan section, Shutang section, Shidong section. On the basis of alteration characteristics of uranium mineralization and ore-controlling rules of structure, it is found that the ore-controlling pattern is different at each sections. The patterns can be divided into two kinds according to the ore-bearing locations: main fault ore-bearing pattern and secondary faults ore-bearing pattern. Mineralizations can be divided into two-epochs. The deposits adjacent to Zhou-Shi structure bear uranium-hematite type mineralization alteration, which indicates that Zhou-Shi structure is important to mineralization. The ore-belt distributing of Xiangshan deposit shows that the normal direction of the main ore-belt always points to the special region in Xiangshan basin. Based on the summary of the known mineralization rules, it is believed that Zou-Shi structure is still one of the most potential region in the Xiangshan area, and Shutang region should be selected as the first exploiting target in Zou-Shi zone.
出处 《铀矿地质》 CAS CSCD 2006年第5期281-289,共9页 Uranium Geology
基金 国家重点基础理论研究项目(编号:2002CB412601) 中国科学院广州地球化学研究所创新领域课题(GIGCX-03-02)联合资助
关键词 邹-石构造带 铀矿化作用 相山铀矿田 Zou-Shi structure uranium mineralization Xiangshan uranium deposits
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