新疆北部金矿化与碰撞造山作用的耦合及金等矿床的分布规律

北疆是世界第二大碰撞造山带－乌拉尔－蒙古造山带的重要组成部分，是全球最典型的碰撞造山地区之一。该区的碰撞造山作用发生在石炭纪和二叠纪，呈先挤压后伸展的特征。北疆地区金等矿床的成矿作用主要发生在二叠纪，少数发生在晚石炭世，与碰撞造山作用的时间一致；金等矿床主要分布在碰撞造山作用较强烈的地带，金矿化与碰撞作用的空间吻合；金等矿床的成矿地球动力学背景是碰撞造山作用的挤压－伸展转变期。成矿时间、空间、地球

THE COUPLING OF THE GOLD MINERALIZATION WITH THE COLLISIONAL OROGENESIS AND THE DISTRIBUTION OF GOLD DEPOSITS, NORTHERN XINJIANG

The Northern Xinjiang area is a important part of the second largest collisional orogens-the UlarMongulia orogens in the world. It is one of the most typical collisional orgenic areas. The collisional orogenesis occurred in Carboniferous and Permian, and showed the nature of early compression and late extension. The gold deposits of the Northern Xinjiang area were mainly emplaced in Permian and minorly in Upper Carboniferous. So the gold mineralization happened contemporaneously with collisional orogenesis. The gold deposits were concentred at the districts where collisional orogenesis was intensive,it indicates a spatial consistence between the collisional orogenesis and the gold mineralization.The mineralizing geodynamic background was the very transition stage from collisional compression to extension. The matching of gold mineralization with collisional orogenesis in time,space and geodynamic setting supports that the Metallogenic Model for Collisional Orogenesis (by Y.Chen)should be the metall