Reclassification of the Meso- and Neoproterozoic Chronostratigraphy of North China by SHRIMP Zircon Ages
Reclassification of the Meso- and Neoproterozoic Chronostratigraphy of North China by SHRIMP Zircon Ages作者机构:Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China China University ofGeosciences Beijing 100083 China Beijing SHRIMP Center Beijing 100037 China
出 版 物:《Acta Geologica Sinica(English Edition)》 (地质学报(英文版))
年 卷 期:2009年第83卷第6期
页 面:1074-1084页
核心收录:
学科分类:070903[理学-古生物学与地层学(含:古人类学)] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学]
基 金:supported by MSTC (Grant No.2006FY120300-1) SINOPEC (Grant No.G080-06-ZS-319) Chinese Geological Survey (CGS) (Grant No.1212010811033,1212010511607)
主 题:geochronology SHRIMP U-Pb dating Meso- and Neoproterozoic North China continent
摘 要:High-quality zircon U-Pb ages acquired from Meso- and Neoproterozoic strata in North China in recent years has provided a high-resolution chronostratigraphic framework for dating. A basis of this high-level chronostratigraphic system provides the foundation for a global Precambrian study and stratigraphic correlation and so recent geological studies have focused attention on systemic SHRIMP zircon dating. A chronology of Meso- and Neoproterozoic strata and the time of origin of the overlying Changcheng System is given on the basis of new SHRIMP zircon dating from the Qianxi Complex and diabase of the Chuanlinggou Formation. A new tectonostratigraphy for a Neoproterozoic chronostratigraphic framework in the southeastern margin of the North China continent is underpinned by the new SHRIMP zircon dating of a Neoproterozoic mafic magma diabase in the Jiao-Liao-Xu-Huai Sub-Province.