摘要
西秦岭造山带处于古亚洲构造域、特提斯构造域和滨太平洋构造域交汇的特殊地段,是中国中央造山带的关键部位,成为中国大陆构造中一个独特的构造单元。该构造单元存在一系列弧顶向南的EW向弧形构造,弧形构造格局是经历了印支—燕山—喜马拉雅期陆陆碰撞和陆内推覆造山长期的继承性构造演化形成的。
Western Qinling Orogenic Zone, located in the intersection part of Paleo and Marginal Pacific tectonic domain, is the central part of Central Orogenic Zone and Asiatic, Tethy domain regarded as a special tectonic unit in China. This structural unit consists of a series of EW-strike arcuate structures with arc roof toward south. The frame of arcuate structure is the evolutionary result of inherited structure undergone Indosinian-Yanshan-Hymalyan continent-continent collision and intra-continental nappe orogenics. The western Qinling area is a large gold metallogenic province, which the metallogenic age took place from Triassic to Cretacious, mainly at Jurassic, the metallogenic material came from the deep. The gold deposits in the study area mainly spread in the part of arc roof, secondly in compound position of arc-arc junction.
出处
《甘肃地质》
2009年第4期16-22,共7页
Gansu Geology
关键词
西秦岭
弧形构造
金矿
控制
western Qinling
arcuate structures
gold deposit
control
