• 责任者：Cheng Lilu (State Key Laboratory of Geological Processes and Mineral Resources ; School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zeng Ling
• 刊名：Acta Petrologica Sinica
• 出版年：2013
• 卷期：29(10)
• 关键词：花岗岩 ; granite ; 大火成岩省 ; large igneous provinces ; 四川 ; Sichuan Province
• 页码：p.3533-3539
• 图表：5 illus., 1 table, 28 refs.
• 分类号：0801
• issnNo：ISSN1000-0569
• isbnNo：CN11-1922/P

     The Hongge Dalaobao granitic stock in the Emeishan large igneous province, SW China, shows spatical association with the giant Fe-Ti-V deposit-bearing mafic-lutramafic intrusion. This granitic intrusion is composed of medium- to fine-grained biotite monzonitic granite. In situ ziron LA-ICP-MS U-Pb age indicates that the age of monzogranite is 255.1 ± 3.6Ma, which is consistent with the ages （255.2 ± 3.6Ma） by zircon U-Pb of peraluminous granites from Ailanghe. The ages show Dalaobao granites are related to the upwelling of the Emeishan plume. The age is 4Myr younger than the main stage （ ～ 260Ma） of the Emeishan volcanism. Based on the deep crustal hot zones, the results of numerical simulation show that the partial melting of deep crust and the Dalaobao granites magmatism are triggered by conductive heating of the mantle-driven magma. Key words Emeishan Large igneous province; Pan-Xi area; Hongge granites ; Age of magmatic intrusion.