Dominant Input of Marine Microbial Organics to Ni-Mo Polymetallic Sulfide Shale in Early Cambrian Niutitang Formation in Zhangjiajie,Hunan, South China

摘要

INTRODUCTION The black shales in Early Cambrian Niutitang Formation distributed widely in South China. These rocks are enriched in a variety of metals such as Ni, Mo, Cu, Pb, Zn, Au, Ag, Ru, Rh, Pd, Os, Ir, Pt, Cd, Se, Ti, Rb, Cs, U and Th, in association with Ni, Mo polymetallic sulfide minerals. The Ni-Mo ore beds are full of organic carbon with the content up to 15.65%, and proposed to be one of the important hydrocarbon source rocks.