浙江江山—绍兴断裂带陈蔡群微量元素地球化学特征及其与成矿的关系
发布时间：2018-07-15 14:19
【摘要】：出露于江山—绍兴断裂带东南侧的陈蔡群是浙东南地区重要的赋矿地层之一,已发现有多处金、银、铜等多金属矿床。有关这些矿床的成因,特别是成矿物质来源一直是学者们关注的焦点,因此陈蔡群变质岩的元素地球化学特征也备受关注。以诸暨地区新近发现的周家坞铜矿为研究对象,对陈蔡群变质岩及矿石的微量元素和稀土元素地球化学特征进行了系统分析,结果表明:陈蔡群变质岩中Au、Ag、Cu、Zn、S、Mo等元素具有较高的初始含量,为成矿提供了有利的物质条件;陈蔡群中矽卡岩与矿石之间的稀土配分曲线均表现为明显的右倾模式,一致性和继承性的特点明显,表明在周家坞铜矿中,元素的富集乃至成矿可能主要与陈蔡群变质岩中元素自身的活化迁移有关。通过以上研究,为认识陈蔡群在成矿中的作用提供了直接证据。
[Abstract]:Chen Cai Qun, which emerged in the southeast of Jiangshan-Shaoxing fault zone, is one of the important ore-hosting strata in southeastern Zhejiang Province. Many polymetallic deposits such as gold, silver and copper have been found. The origin of these deposits, especially the source of ore-forming materials, has always been the focus of scholars, so the element geochemical characteristics of metamorphic rocks in Chen Cai Qun have been paid more attention. The geochemical characteristics of trace elements and rare earth elements in metamorphic rocks and ores of Chencai Group were systematically analyzed with the newly discovered Zhoujiawu Copper Mine in Zhuji area. The results show that the high initial content of au _ (Ag) Cu _ (Cu) Zn ~ (+) S _ (Mo) in metamorphic rocks of Chencai Group provides favorable material conditions for mineralization, and the distribution curves of rare earth elements between skarn and ore in Chen Cai Group show an obvious right-dip pattern. The characteristics of consistency and inheritance indicate that the enrichment and mineralization of elements in Zhoujiawu copper deposit may be mainly related to the activation and migration of elements themselves in the metamorphic rocks of Chen Cai Qun. The above research provides direct evidence for understanding the role of Chen Cai Qun in metallogeny.
【作者单位】： 中国地质科学院地球物理地球化学勘查研究所;中国地质大学(北京)地球科学与资源学院;
【基金】：国土资源部公益性行业科研专项(2011110008)
【分类号】：P595;P618.2
[Abstract]:Chen Cai Qun, which emerged in the southeast of Jiangshan-Shaoxing fault zone, is one of the important ore-hosting strata in southeastern Zhejiang Province. Many polymetallic deposits such as gold, silver and copper have been found. The origin of these deposits, especially the source of ore-forming materials, has always been the focus of scholars, so the element geochemical characteristics of metamorphic rocks in Chen Cai Qun have been paid more attention. The geochemical characteristics of trace elements and rare earth elements in metamorphic rocks and ores of Chencai Group were systematically analyzed with the newly discovered Zhoujiawu Copper Mine in Zhuji area. The results show that the high initial content of au _ (Ag) Cu _ (Cu) Zn ~ (+) S _ (Mo) in metamorphic rocks of Chencai Group provides favorable material conditions for mineralization, and the distribution curves of rare earth elements between skarn and ore in Chen Cai Group show an obvious right-dip pattern. The characteristics of consistency and inheritance indicate that the enrichment and mineralization of elements in Zhoujiawu copper deposit may be mainly related to the activation and migration of elements themselves in the metamorphic rocks of Chen Cai Qun. The above research provides direct evidence for understanding the role of Chen Cai Qun in metallogeny.
【作者单位】： 中国地质科学院地球物理地球化学勘查研究所;中国地质大学(北京)地球科学与资源学院;
【基金】：国土资源部公益性行业科研专项(2011110008)
【分类号】：P595;P618.2
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