东准噶尔双泉地区韧-脆性剪切带与金矿成矿  

THE REALATIONSHIP BETWEEN DUCTILE-BRITTLE SHEAR ZONES AND MINERALIZATION OF GOLD DEPOSITS IN SHUANGQUAN AREA, EASTERN JUNGGAR

作　　者：路彦明[1] 赵军[2] 陈祥[1] 张栋[3] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国人民武装警察部队黄金八支队,新疆乌鲁木齐830057 [3]中国人民武装警察部队黄金地质研究所,河北廊坊065000

出　　处：《新疆地质》2007年第2期164-168,共5页Xinjiang Geology

基　　金：武警黄金指挥部地质专项资金项目(Hj05-06)资助

摘　　要：东准噶尔双泉一带的韧-脆性剪切带是在板块结合带基础上,形成于陆-陆碰撞体制.其在330~265Ma期间,受挤压伸展体制转换影响,先后经历了韧、脆性构造变形.区域上金矿与韧-脆性剪切构造时、空密切相关.韧性剪切变形形成的德尔剪切构造系统中的各类裂隙,是后期脆性变形阶段再次发生变形的部位,也是金矿集中产出的有利构造空间.金矿流体包裹体氢、氧同位素组成表明,成矿流体中水为变质成因水.矿石稀土特征反映金成矿与泥盆系、石炭系有关,与岩体无关.综合地质、地球化学等研究,指出了该区有较好的找矿前景.Basing on the combination of plates, ductile-brittle shear zone in the ShuangQuan area, Eastern JungGar forms in the system of continental- continental collision. During 330-265 Ma, affected by the conversion from compression to extension, it undergoes ductile and brittle deformation. Regionally, gold deposits have close relationship with the ductile-brittle shear zone in space and time. All kinds of cracks and faults in the Ridel shear structural system, forming in the ductile shear deformation, are areas easily-deformed in the late brittle stage, and preferential areas for swarming gold deposits. The characteristics of H, O isotopes from inclusions show that the water in the fluid is originated from metamorphic water and the REE characteristics of ores manifest that gold deposits is related to the stratum of Devonian and Carboniferous, no relationship with rock bodies. Synthetically, the studies of geology and geochemistry show the prospecting of the area.

关 键 词：韧-脆性剪切带 流体 金矿 双泉 东准噶尔 

分 类 号：P611[天文地球—矿床学]