• 责任者：Zhang Zhiyu (State Key Laboratory of Geological Process and Mineral Resources ; School of the Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Du Yangsong
• 刊名：Geological Review
• 出版年：2011
• 卷期：57(3)
• 关键词：花岗岩类 ; granitoid ; 铀—铅计时 ; U-Pb dating ; 安徽 ; Anhui Province
• 页码：p.366-378
• 图表：8 illus., 2 tables, 61 refs.
• 分类号：0801
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

ARGIN: 0cm 0cm 0pt" class=MsoNormal> ary name="EnDivSummary">Tongshan intrusion is one of the ore-bearing intrusions in the main magmatic belt along the Middle and arttags" />Lower Yangtze River area. The precise age of rock-forming and petrogenenis are poorly reported at present. The intrusion mainly consists of quartz diorite porphyry, quartz monzonite porphyry and granodiorite porphyry, and has close relationship with the copper mineralization. The result of SHRIMP zircon U-Pb dating shows that the quartz monzonite porphyry formed in (145.1±1.2) Ma, i.e., the middle stage of Yanshan movement in Late Jurassic. The studies on geochronology, petrochemistry and geochemistry indicate the magma were crust-mantle mixed sources, i.e., the basaltic magma sourced from enriched lithospheric mantle by batch partial melting, assimilated the mass of low-crust, then went upwards and emplaced in shallow crust.