试论新疆伽师砂岩型铜矿的推覆构造控制  

Nappe Tectonic Control of Jiashi Sandstone Copper Deposit,Xinjiang,China

作　　者：王泽利[1] 司如一 赵远方[2] 张存艳 冷坤鹏 

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]中国地质科学院地质力学研究所,北京100081 [3]山东省第一地质矿产勘查院,山东济南250014 [4]新疆伽师县铜辉矿业有限责任公司,新疆喀什844000

出　　处：《山东科技大学学报（自然科学版）》2015年第6期25-31,共7页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：伽师铜矿床位于柯坪塔格背斜南翼,其成矿作用明显受构造和岩石类型制约。根据伽师砂岩型铜矿矿化与构造及岩石类型间的产出关系,结合区域构造背景分析,阐述了该砂岩型铜矿床的推覆构造控矿机理。推覆构造及其次生断裂系统为深部流体运移提供通道,还原性有机流体与铜背景值高的红色砂岩层发生交代形成辉铜矿,很好地解释了推覆体前缘铜矿化的赋存和富集特征,进而提出伽师砂岩型铜矿床的推覆构造前锋流体交代成矿的控矿模式。Located in the south wing of Kalpintag anticline,Jiashi copper deposit was obviously affected by rock tectonics and types in its mineralization. This paper studied the nappe tectonic ore-controlling mechanism of Jiashi sandstone copper deposit on the basis of the relationship between its mineralization and its tectonics as well as rock type, and of regional tectonic background. Because nappe tectonics and its secondary faulting system provided migration pathways of basin fluid,metasomatism between reducible organic fluid and copper-ferrous sandstones took place and generated chalcoeite as a result,which explains the cooper mineralization of nappe front and its accumulation charac teristics. An ore-controlling model of mineralization by nappe front fluid metasomatism was finally proposed for Jiashi sandstone copper deposit.

关 键 词：推覆构造 盆地流体 控矿 砂岩型铜矿 新疆伽师 

分 类 号：P611[天文地球—矿床学]