%0 Journal Article
%T Crustal Evolution of Altay Large-Superlarge Deposits Enriched Region in Xinjiang<br>阿尔泰大型-超大型矿床富集区地壳演化
%A LI Hong-yang
%A YANG Zhu-sen
%A LUO Tai-yi
%A GAO Zhen-min
%A WANG Deng-hong
%A <br>李红阳
%A 杨竹森
%A 罗泰义
%A 高振敏
%A 王登红
%J 地球学报
%D 1999
%I 
%X On the basis of comprehensive studies of various sorts of information such as tectonism, magmatism,metamorphism, ore-forming processes with their evolution in space and time, and geophysics, the formation and evolution(three accordion opening-closing events) of Altay large-superlarge deposits enriched region are considered to have been caused by the inception and evolution of Paleozoic Altay mantle plume-generated triple junction rifts. Ascending and lateral spreading of the mantle plume opened the triple junction rifts, resulted in the continental break-up, and generated Altay "ocean island-type" ophiolites, Altay-type granitoids, granitization, high-temperature and low-pressure metamorphic belts and chief large-superlarge deposits in the enriched region. Subsiding or resting of the mantle plume caused the A-type subduction, closing and orogeny of the triple junction rift system, and yielded triple-type intracontinental orogenic belts, synorogenic granitoids and some mineral deposits.
%K mantle plume
%K triple junction rift
%K continental break-up
%K large-superlarge deposits enriched region
%K Altay<br>地幔热柱
%K 三联点裂谷
%K 大陆解体
%K 大型-超大型矿床富集区
%K 新疆阿尔泰
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=8A5BBB6F6CE57A26C8FA57C8BFAFAB8C&yid=B914830F5B1D1078&vid=A04140E723CB732E&iid=E158A972A605785F&sid=0493D643315CD829&eid=84A93BA251D28205&journal_id=1006-3021&journal_name=地球学报&referenced_num=4&reference_num=45