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Implication of Ultra‐high δ 34 S Values in Pyrite from Manganese Deposits of the Datangpo Stage, Yangtze Platform, China
Author(s) -
WU Chengquan,
ZHANG Zhengwei,
ZHENG Chaofei,
YAO Junhua
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12370_11
Subject(s) - chinese academy of sciences , china , beijing , geochemistry , geology , pyrite , archaeology , geography
The manganese deposits of the Datangpo stage occurred in the black rock series of the basal Datangpo Formation of Nanhua System. Geologically, they mainly lie in the junction of the Yangtze Platform and Jiangnan Orogen. The South China Block has been formed through convergence between the Yangtze and Cathaysia blocks at ca. 1.1–0.9 Ga (Li et al., 2002; Ye et al., 2007; Li et al., 2009), which then experienced episodic rifting at ca. 820-542 Ma (Li et al., 2003; Wang and Li, 2003; Wang et al., 2009). A southeast-facing (present orientation) passive continental margin on the Yangtze Block was subsequently developed in the course of breakup of the Rodinia Supercontinent (Feng et al., 2004). Some basins controlled by the faults developed along the continental margin and to be favor for the deposition of manganese in the Datangpo stage of the Nanhua period. The ages of manganese deposits of the Datangpo stage were constrained within 662.9±4.3 Ma to 654.5±3.8 Ma by a pair zircon U-Pb ages for the tuffaceous beds in the basal and topmost Datangpo Formation (Zhou et al., 2004; Zhang et al., 2008).