uot;MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>uot;COLOR: black; mso-font-kerning: 18.0pt" lang=EN-US>uot;Times New Roman">SHRIMP Zircon U-Pb Dating of the Early Jurassic Magmatic Rocks in uot;urn:schemas-microsoft-com:office:smarttags" />
详细信息
- 责任者：Yu Xinqi (State Key Laboratory of Geological Processes and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Wu Ganguo
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(12)
- 关键词：侵入体 ; intrusions ; SHRIMP定年 ; SHRIMP dating ; 构造热事件 ; tectonic thermal event ; 江西 ; Jiangxi Province ; 湖北 ; Hubei Province
- 页码：p.3469-3484
- 图表：4 illus., 3 tables, 51 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
ummary name="EnDivSummary">Besides the ages of the Early Jurassic Xialan complex in northern Guangdong Province, this paper reports the SHRIMP zircon U-Pb ages of magmatic rocks in Dongkeng and Linjiang basins, southern Jiangxi areas, southeastern China. The SHRIMP zircon U-Pb ages of 193±2 Ma for granodiorite and 196±1 Ma for gabbro-diabase from Hanhu, Dongkeng Basin, show that the mixed Hanhu complex intruded in the Early Jurassic. Field observation indicates that the gabbro-diabase coexists with syenite in granodiorite, and that the basic components enter the syenite. These rocks, in turn, influenced the Hanhu and Xialan complexs. The confirmation of these tectono-magmatic events will be helpful to understand the Early Jurassic tectonic evolution in this area.