The mafic-ultra mafic rocks bearing copper-nickel in northern Xinjiang and the Tianshan large igneous provinces
The research shown that the formation time of Kalatongke mafic-ultramafic belt , Huangshan mafic-ultramafic belt and Jingbulake mafic-ultramafic belt are early Permian and late Carboniferous, and that means they formed in the same tectonic setting. Geochemical studies have shown that The material from upper mantle,and was contaminated by crustal materials to varying degrees. The Tianshan rift-related volcanic rocks make up a large igneous province erupted during the Carboniferous-Early Permian period in northwestern China. The volcanic successions comprise thick piles of basaltic lavas and subordinate intermediate and silicic lavas and pyroclastics.The formation of the igneous mega province is related to mantle plume activity(LIP;Xia Linqi et al.,2003,2004).The three belts realt to Tianshan large igneous province in time,and were they the product of the mantle plume ? We conclude with a model that attempts to explain the relation ship between the zoned maic-ultramaic intrusions and mantle plume activity during the Permian in this paper.
Sun Jia Li Wenyuan
Xian Center of Geological Survey, CGS, Xian 710054, China College of Earth Science and Land Recour Xian Center of Geological Survey, CGS, Xian 710054, China
国际会议
Xian International Ni-Cu(Pt) Deposit Symposium 2009(2009 西安·Ni-Cu(Pt)岩浆矿床国际学术研讨会)
西安
英文
234-235
2009-09-01（万方平台首次上网日期，不代表论文的发表时间）