Depositional Age and Provenance of the Wufoshan Group in the Southern Margin of the North China Craton: Evidence from Detrital Zircon U-Pb Ages and Hf Isotopic Compositions

详细信息   

• 责任者：Hu Guohui (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Zao Taiping
• 刊名：Geochimica
• 出版年：2012
• 卷期：41(4)
• 关键词：石英砂岩 ; quartz sandstone ; 物源区 ; provenance ; 华北地区 ; North China
• 页码：p.326-342
• 图表：illus., 2 tables, 70 refs.
• 分类号：0803
• issnNo：ISSN0379-1726
• isbnNo：CN44-1398/P

摘要

This paper reports LA-ICP-MS U-Pb ages and Hf isotope compositions of the detrital zircon from two quartz sandstones of the Ma’anshan Formation at the bottom of the Wufoshan Group. The ²⁰⁷Pb/²⁰⁶Pb ages peak at （1.93±0.10） Ga, indicate significant Early Precambrain tectonic-thermal events in the Songshan region, in conformity with Paleoproterozoic metamorphism ages （～1.91 Ga）. Most T model ages are between 2.80 Ga and 2.50 Ga evolution lines of crust, indicating that Neoarchean is the main crustal growth period of the southern margin of the NCC.