Journal of Asian Earth Sciences 156 (2018) 41–58 Contents lists available at ScienceDirect Journal of Asian Earth Sciences journal homepage: www.elsevier.com/locate/jseaes Late Paleozoic SEDEX deposits in South China formed in a carbonate platform at the northern margin of Gondwana Wenhong Johnson Qiu, Mei-Fu Zhou , Zerui Ray Liu Department of Earth Sciences, University of Hong Kong, Hong Kong Special Administrative Region ARTICLE I NFO ABSTRACT Keywords: SEDEX sulﬁde deposits hosted in black shale and carbonate are common in the South China Block. The SEDEX Dajiangping pyrite deposit is the largest of these deposits and is made up of stratiform orebodies hosted in black Mineralization age shales. Sandstone interlayered with stratiform orebodies contains detrital zircon grains with the youngest ages of Re-Os isochron 429 Ma. Pyrite from the orebodies has a Re-Os isochron age of 389 ± 62 Ma, indicative of formation of the Zircon U-Pb dating hosting strata and syngenetic pyrite ores in the mid-late Devonian. The hosting strata is a transgression sequence Depositional environment in a passive margin and composed of carbonaceous limestone in the lower part and black shales in the upper Tectonic setting part. The ore-hosting black shales have high TOC (total organic carbon), Mo, As,
Journal of Asian Earth Sciences – Elsevier
Published: May 1, 2018
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