• 责任者：Wang Shiwei (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Zhou Taofa
• 刊名：Acta Geologica Sinica
• 出版年：2011
• 卷期：85(5)
• 关键词：闪长岩 ; diorites ; 铀—铅计时 ; U-Pb dating ; 安徽 ; Anhui Province
• 页码：p.849-861
• 图表：13 illus., 3 tables, 67 refs.
• 分类号：0801
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

The Shujiadian intrusion is located in the transition part between the Tongling faulting uplift and the Fanchang faulting basin in the Middle-Lower Reaches of Yangtze River. This paper studied LA-ICPMS U-Pb dating data of the zircons from pyroxene diorite, and its geochemical compositions and Pb isotope, so as to probe the geochronology, source and evolution of magmas, and tectonic setting of the Shujiadian intrusion. The results indicate that the age of the Shujiadian intrusion is （139.2±2.1） Ma (MSWD=2.3, n=12), suggesting that it is part of the magmatic system in the Tongling area, but not the Fanchang volcanic basin. Pyroxene diorite belongs to high potassium series.