黑色页岩成矿作用研究一直以来都是矿床学研究的热点。我国南方下寒武统黑色页岩沿扬子地台南缘出露达1600公里，其中赋存一套矿产组合，包括多镍钼金属矿，钒矿，重晶石矿，磷矿和石煤矿。湖南张家界地区下寒武统黑色页岩的底部局部可见镍钼多金属矿和钒矿呈现分带现象。尽管前人完成了大量重要探索，但对于这套黑色页岩中镍钼多金属矿和钒矿的矿化分带机制尚不明确。本项目在反演华南早寒武世古海洋氧化还原沉积环境的基础上探讨矿化分带机制。选择具有代表性的张家界地区三岔镍钼多金属矿和四都坪钒矿为研究对象，联合应用Mo同位素和微量元素地球化学等技术方法，通过对比分析镍钼多金属矿和钒矿成矿过程中古海洋氧化还原沉积环境的差异，探讨氧化还原沉积环境对金属矿化分带的控制作用，并为深入认识镍钼多金属矿和钒矿金属物质来源提供依据。本项目有利于深化对华南早寒武世古海洋地球化学性质的认识，并丰富黑色页岩型矿床成矿理论。

Metallogenic mechanism study associated with black shales has been a hot topic for many years. Early Cambrian black shales are exposed for about 1600 km along the southern margin of the Yangtze Platform, South China. The basal part of the black shale sequence comprises a broad spectrum of biologically mediated chemical sediments, including phosphorite, alginite ("stone coal"), barite, vanadium and polymetallic Ni-Mo sulfide mineralization. In the Zhangjiajie area in Hunan province, the polymetallic Ni-Mo and vanadium locally occur as paleogeographic-metallogenic zonation. Although previous studies have greatly promoted understandings on palaeoenvironment and metallogency associated with black shales, mechanisms of polymetallic Ni-Mo and vanadium metallogenic zonation in South China are still controversial. The exceptional Ni-Mo and vanadium enrichment in organic carbon-rich black shale likely formed syngenetically from seawater in sediment-starved euxinic basins, and provides an arguably unique record of the redox-sensitive metal inventory of the Early Cambrian seawater. We wish to compare the stratigraphic correlated polymetallic Ni-Mo and vanadium deposits in the Zhangjiajie area. A combination of diagnostic molybdenum isotope and trace element compositions on both the polymetallic Ni-Mo and vanadium deposits will allow us to reconstruct the redox conditional variations during precipitation of metals between polymetallic Ni-Mo and vanadium deposits and help to understand the mechanism of metal zonation. These studies will provide insight into the Early Cambrian earth evolution history and will have general implications for modeling black shale associated mineralization.