浙江诸暨璜山金矿构造特征及深部找矿预测

发布时间：2018-01-23 02:44

本文关键词： 璜山金矿共轭剪切带庙下畈金矿深部找矿诸暨浙江　出处：《地质与勘探》2017年04期 　论文类型：期刊论文

【摘要】：诸暨璜山金矿是浙江省著名的金矿之一,位于江山-绍兴断裂带北东段。本文通过对璜山金矿和庙下畈金矿的构造特征进行对比研究,认为这两个金矿形成的构造背景和成矿时代基本相同,但矿体走向和剪切动向截然不同,璜山金矿赋存于NE走向的剪切带内,庙下畈金矿位于NW走向的剪切带内,二者构成共轭剪切带,叠加在江山-绍兴主干韧性剪切带之上。成矿后该区先后受到NW-SE和NNE-SSW方向的挤压,形成NW走向和近SN方向的脆性断裂,对矿体起到破坏作用。依据共轭剪切带的空间分布,推测江绍断裂南东侧可能存在与璜山金矿对应的赋矿剪切带,该带位于新元古代陈蔡群变质岩之下,埋藏较深,是璜山地区深部找矿的有利勘探区。
[Abstract]:Zhuji Huangshan gold deposit is one of the most famous gold deposits in Zhejiang Province, located in the northern eastern section of Jiangshan-Shaoxing fault zone. The structural characteristics of Huangshan gold deposit and Miaoxiafan gold deposit are comparatively studied in this paper. It is considered that the tectonic setting and metallogenic age of the two gold deposits are basically the same, but the strike and shear trends of the orebody are quite different, and the Huangshan gold deposit occurs in the shear zone of the NE strike. Miaoxiafan gold deposit is located in the shear zone of NW strike, which constitutes conjugate shear zone. It is superimposed on the main ductile shear zone of Jiangshan-Shaoxing. After the mineralization, the area has been squeezed by the direction of NW-SE and NNE-SSW, forming the brittle fracture of NW strike and near SN direction. Based on the spatial distribution of the conjugate shear zone, it is inferred that there may be a metallogenic shear zone corresponding to the Huangshan gold deposit in the east of Jiangshao fault, which is located below the metamorphic rocks of the Chencai Group in the Neoproterozoic era. Buried deeply, it is a favorable exploration area for deep prospecting in Huangshan area.
【作者单位】：南京大学地球科学与工程学院;浙江鑫盛黄金有限公司;中国地质科学院地质研究所;
【基金】：国家自然科学基金项目(编号41372158) 全国重要成矿带重大科技问题公关项目(编号12120114005001)联合资助
【分类号】：P618.51
【正文快照】： Xie Guo-ai,Zhu Yu-huo,Zhang Jin,Zhang Qing-long.Structural characteristics and predictionfor deep gold ore prospecting in the Huangshan gold deposit,Zhuji,Zhejiang Province[J].Geologyand Exploration,2017,53(4):0615-0623.1引言20世纪70年代浙江有色地质三队

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