Geochronology and geochemistry of the Paleoproterozoic Fangniushan supracrustal strata in the Xiaoshan area, southern North China Craton: Implications for tectonic evolution

• Published in: Precambrian research 2020-08, Vol.346, p.105789, Article 105789
• Main Authors: Sun, Qianying, Zhou, Yanyan, Zhao, Taiping, Pang, Lanyin, Qiu, Yifan
• Format: Article
• Language: English
• Subjects: Detrital zircon; Fangniushan metasedimentary rocks; Geochemistry; North China craton; Tectonic evolution
• ISSN: 0301-9268; 1872-7433
• DOI: 10.1016/j.precamres.2020.105789

•The Fangniushan supracrustal strata in the southern North China Craton was formed at ~1.87 to 1.80 Ga.•The Fangniushan supracrustal strata was deposited in a retro-arc foreland setting.•The Fangniushan supracrustal strata received detritus mainly from felsic sources.•The southern North China Craton might have experienced tectonic regime change from rift to subduction during Paleoproterozoic. The Fangniushan supracrustal strata located in Xiaoshan area is one of the best-preserved Paleoproterozoic lowgrade metasedimentary units exposed in the southern North China Craton, which is mainly composed of quartzite and feldspar quartzite with minor pebbly quartzite and conglomerates. It unconformably contacts with the underlying Taihua Complex and the overlying Paleoproterozoic Xiong’er Group. Ages of the youngest detrital zircons from the quartzites combined with the formation age of the overlying Xiong’er Group bracket the depositional time of the Fangniushan supracrustal strata at ca. 1.87–1.80 Ga. Low CIA (