Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Geologica Sinica》 1999-01
Add to Favorite Get Latest Update

Temporal and Spatial Distribution and Evolution of Ore Deposits in the West Sector of the Northern Qilian Mountains

Mao Jingwen(Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing, 100037)Zhang Zhaochong(Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037)Ren Fengshou, Zuo Guochao(Gansu Bureau of Geology and Mineral Resources, Lanzhou, Gansu, 730000)Zhang Zuoheng, Yang Jianmin, Wang Zhiliang( Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing 100037)Ye Dejin(Gansu Bureau of Geology and Mineral Resources, Lanzhou, Gansu, 730000)  
The west sector of the northern Qilian Mountains is well-known for the Jingtieshan type iron deposits. A new breakthrough has been made in prospecting for gold and copper in recent years. In this paper, the distribution characteristics of ore deposits in the study area are discussed from the view of tectonic evolution. It is proposed that there are 9 stages of mineralization from the Palaeoproterozoic to Indosinian. Four minerogenetic series of ore deposits and two mineroge-netic subseries of ore deposits are recognized. Iron mineralozation occurred in several stages, while most metals were accumulated in large amounts in the Caledonian. The enrichment and mineralization of gold is related to the ascent and unloading of deep-seated fluids and large-scale shear along strike-slip faults.
【Fund】: 国家计划委员会科技找矿项目(编号:JG9471902);; 国家杰出青年科学基金(编号:49825103);; 地质矿产部跨世纪人才基金
【CateGory Index】: P618.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved