东准噶尔碰撞造山作用与花岗岩类及有关金属成矿系列  

Collisional orogenesis and granitoids and related metallogenic series from eastern Junggar

作　　者：喻亨祥[1] 夏斌[1] 刘家远[2] 吴郭泉[2] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]桂林工学院,广西桂林541004

出　　处：《桂林工学院学报》2000年第3期213-219,共7页Journal of Guilin University of Technology

基　　金：国家科技部"国家重点基础研究发展规划"项目!(编号 :G19990 432 0 4);国家攀登计划预选项目!(95 -预 -2 5 );国家三O五项目!(85

摘　　要：东准噶尔是中亚 -兴蒙巨型构造成矿域的重要组成部分 ,石炭纪—二叠纪经历了强烈的板块碰撞造山作用 ,发育多种多样的花岗岩类及有关金属矿床。花岗岩类及有关金属矿床的形成演化明显受碰撞造山作用的制约。从碰撞造山前→洋 -陆俯冲→陆 -陆碰撞→陆内造山挤压 -伸展→板内裂谷 ,区域花岗岩类从大洋M型斜长花岗岩类→岛弧I型钙碱性花岗岩类→造山隆起区Ⅰ型钙碱性花岗岩类、S型偏碱性花岗岩类→陆内俯冲断裂深熔I型钙碱性花岗岩类、后造山拉张A2 型碱性花岗岩类→板内裂谷A1型碱性花岗岩类依次成群成带演化形成。其中 ,碰撞造山挤压 -伸展转变期是花岗岩类大规模发育时期 ,也是与花岗岩类有关金属成矿作用的高峰期 ,主要形成了两类含矿花岗岩及相关的两个金属成矿系列 :陆内俯冲断裂深熔Ⅰ型钙碱性花岗岩类及有关铜、金 (铁、钼 )等金属成矿系列和后造山拉张A2 型碱性花岗岩类及有关锡成矿系列。Eastern Junggar is an important part of Central Asian-Xingmeng Macroscopic Tectonic-metallogenic domain. During Carboniferous and Permian periods, there happened intensive collision of plates, intracontinental expression-extension and intraplate rift in the area, and well-developed varied granitoids and metallic ore deposits, of which, intraplate fracture anatexis I-type calc-alkali granitoid and related Cu-Au metallogenic series, and post-orogenic extension A 2-subtype alkli granitoid and related Sn metallogenic series were formed. The forming geodynamic setting of the ore-bearing granitoids and the related metallic ore deposits was a very transition stage from collisional compression to extension. The matching of forming of the granitoids and the related metallic ore deposits with collisional orogenesis in time, space and geodynamic setting proposes that the Diagenic and Metalligenic Model for Collisional Orogenesis (by Chen Yanjing) should be the forming model of the granitoids and the related metallic ore deposits in the eastern Junggar area.

关 键 词：碰撞造山作用 花岗岩类 金属成矿系列 新疆 

分 类 号：P588.121[天文地球—岩石学] P618.401[天文地球—地质学]