东天山康古尔塔格金矿带构造与成矿规律

TECTONIC AND METALLOGENIC LAW IN KANGGUERTAG GOLD ORE BELT, EASTERN TIANSHAN

康古尔塔格金矿带是近几年新疆东天山境内发现的重要成矿带。以康古尔塔格─黄山断裂为一级板块边界，其南发育晚古生代岛弧系和巨型韧性剪切带，后者东西延伸数百km，强弱应变相间，分四期变形，第二、三期变形与金矿关系最为密切。晚古生代碰撞构造及其演化与金成矿亦具有重要的时空控制关系。碰撞花岗岩系列特征与成矿对应关系明显。成矿构造演化分三个阶段，提出了六条该区构造演化与成矿规律方面的认识，表明该带构造控矿和动力（变质）热液成矿均较明显。

Kanguertag gold ore belt is an important metallogenic belt discovered in the area of easternTianshan, Xinjiang Uygur Autonomous Region. The area is seperated by Kangguertag-Huangshan deep fracture, which belongs to the first plate boundary. There is an island arc system ofLate Paleozoic Era and a giant shear zone in south of the fracture, which stretches several hundreds of km from east to west with alternating strong and weak strain. There are four stages ofdeformation of which the second and third are most closely related to gold mineralization. Thereare also important temporal and spacial relations between the late paleozoic collision and gold metallogeny. Charateristics of collision granites are clearly corresponded to the An deposits. Threestges of metallogenic tectonic evolution and six tectonic and metallogenic laws are put forward.The An deposits in the belt are obviously controled by collision and characterized by dynamic(metamorphic) hydrothermal fluid mineralization.