Late Palaeoproterozoic Crustal Evolution of the North China Craton and Formation Time of the Jingshan Group: Constraints from SHRIMP U-Pb Zircon Dating of Meta-Intermediate-Basic Intrusive Rocks in Eastern Shandong Province
详细信息
- 责任者：Dong Chunyan (Beijing SHRIMP Center ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Shijin
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(6)
- 关键词：变质岩 ; metamorphic rocks ; 铀—铅计时 ; U-Pb dating ; 华北地区 ; North China
- 页码：p.1699-1706
- 图表：4 illus., 1 table, 48 refs.
- 分类号：0802
- 出版序号：837
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The SHRIMP U-Pb ages for the zircons from the meta-intermediate-basic intrusive rocks cutting the Late Paleoproterozoic Jingshan Group in eastern Shandong Province, North China Craton are reported. Combined with regional data, some conclusions can be drawn as follows: 1) new zircon dating further supports that the Jingshan Group was formed during the Late Paleoproterozoic; and 2) in the eastern Shandong Province, the time from compression to extension was before 1.87 Ga during the Paleoproterozoic. This is similar to the Daqingshan and Hengshan areas, western North China Craton, where the extension is considered to start at 1.95~1.92 Ga.