• 责任者：Wang Xiaolei (State Key Laboratory of Mineral Deposits Research ; School of Earth Science and Engineering ; Nanjing University ; Nanjing 210093 ; China ; ) ; Shu Xujie
• 刊名：Geological Bulletin of China
• 出版年：2012
• 卷期：31(1)
• 关键词：侵入体 ; intrusions ; 铀—铅计时 ; U-Pb dating ; 浙江 ; Zhejiang Province
• 页码：p.75-81
• 图表：3 illus., 1 table, 27 refs.
• 分类号：0801
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

LA-ICP-MS zircon U-Pb dating work was carried out for the Shijiao-Huangshan intrusive rocks from Zhuji area of Zhejiang Province, which is also tectonically adjacent to the Jiangshan-Shaoxing fault of eastern Jiangnan orogen. The dating results indicate that the Shijiao amphibole pyroxenite and Huangshan quartz diorites were crystallized at (844±3) Ma and (818±6) Ma, respectively, suggesting that they, including the Shijiao orbicular perknites, were probably formed in different periods. Combined with other new available dating results, the authors hold that the Neoproterozoic diorites along the Jiangshan-Shaoxing fault might have been formed during the span of ca. 930~810 Ma. The studies of the petrology and petrogenesis of the ultramafic rocks and diorites will shed light on the Neoproterozoic amalgamation processes between the Yangtze and Cathaysia blocks.