The Character and Petrogenetic Model of the Permian Tarim Large Igneous Province

作     者：CHEN Hanlin YANG Shufeng LI Zilong YU Xing LI Yinqi 

作者机构：Zhejiang UniversityHangzhouZhejiang 710054 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2020年第94卷第S1期

页      面：7-7页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 

基　　金：granted by the National Key Research&Development Program of China(grant No.2016YFC0601004) the National Science and Technology Major Project(grant No.2017ZX05008-001) 

主　　题：magmatic sequence two type of basic magmatite two-stage melting model TLIP 

摘      要：Tarim Large Igneous Province(TLIP)is the second Late Paleozoic LIPs in China after the recognition of the Emeishan *** residual distribution range of TLIP is up to 250000 km2,and the largest residual thickness is 780 *** eruption of basalt happened during 290–288 Ma and belongs to LIPs magmatic event with fast eruption of *** lithological units of the TLIP include basalt,diabase,layered intrusive rock,breccia pipe mica-olivine pyroxenite,olivine pyroxenite,gabbro,ultramafic dyke,quartz syenite,quartz syenite porphyry and bimodal *** basalt and diabase of TLIP exhibit OIB-like trace element patterns and enrichment of LILE and HFSE,and mainly belong to high TiO2 *** is an obvious difference in isotope among the basalt from Keping and the basalt and dibase from the northern Tarim *** basalt from Keping with negative Nd and high REE value derives from enriched mantle,and the diabase and basalt from the northern Tarim Basin with positive Nd and low REE value are related to depleted *** crust uplifting in the Early Permian and the development of picrite and large scale dyke and formation of large scale V-Ti-magnetite deposit in Wajilitag area support the view that the TLIP is related to mantle *** TLIP has a temporal-spatial relationship with Permian basicultrabasic igneous rock,which is distributed widely in Central Asia,and they represent a tectono-magmatic event with very important geodynamic *** study also systematically demonstrates the two-stage melting model for the TLIP based on our previous research work and predecessor achievements,and highlights the two types of magmatic rocks within the *** two-stage melting model suggests that the formation of the TLIP is mantle plume *** early hot mantle plume caused the low-degree partial melting of the lithosphere mantle,while in the later stage,the plume partially melted due to adiabatic uplift and ***,this model carries signatures of b