| 庄光军.南坪矿区隐伏岩体特征及其成矿意义[J].地质与勘探,2010,46(Z1):1232-1241 |
| 南坪矿区隐伏岩体特征及其成矿意义 |
| The Character of Insidious Granite-porphyry Body and Its Implications forMineralization in Nanping Mining Area,Western Henan |
| 投稿时间：2010-10-25 修订日期：2010-11-20 |
| DOI： |
| 中文关键词: 花岗斑岩 隐伏岩体 地球化学 南坪矿区 豫西 |
| 英文关键词: granite- porphyry,insidious rock body,geochemistry,Nanping mining area,western Henan |
| 基金项目:联合勘查项目(编号:200904020601)资助。 |
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| 中文摘要: |
| [摘要]南坪大型钼-金矿床位于河南省栾川县狮子庙乡东部地区,矿区隐伏花岗斑岩体的发现
表明其可能属于斑岩型成矿系统。本文在野外地质调研和前人资料研究的基础上,厘定了南坪矿区隐
伏斑岩体的地质特征、锆石U-Pb 年龄和地球化学特征,认为该斑岩体属于高钾钙碱性系列或钾玄岩系
列。与区域花岗质岩体对比,认为岩体形成时代为燕山中-晚期,属于燕山期花岗岩类第二阶段晚期产
物,岩浆物质来源于下地壳,并进一步探讨了岩体对钼-金成矿的贡献。燕山期花岗岩类第二阶段花岗
质岩浆活动与南坪钼-金矿化关系密切,该期岩浆活动提供了成矿的物质、流体和热动力条件。 |
| 英文摘要: |
| Abstract:Nanping large scale Mo-Au deposit is located in the eastern part of Shizimiao Village, Luanchuan County, Henan Province, where the in鄄
sidious porphyry body is newly discovered, indicating that the deposit belongs to porphyry ore-forming system. Based on the comprehensive analysis of the
previous data, this paper has summarized the geological characteristics, U-Pb zircon age and geochemistry characteristics of the concealed porphyry body.
We think the porphyry body belongs to high-K calc-alkaline series or shoshonitic series. Compared with the regional granites,we think the formation age
of the rock body is similar to Huashan rock body, that is middle-late Yanshanian, and determine that magmatic materials are from the lower crust. Dis鄄
cussing on the constribution of the rock body for mineralization in study area, we consider the rock body belongs to the second phase of the late Yanshanian
granitoids. Mo-Au mineralization in Nanping mining area, western Henan, is closely related to the activity of granitic magma. Granitic magma activities
and the large amount of fluid have made strong mineralization. |
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