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本文采用ＧＣ＿ＭＳ、ＩＣＰ＿ＭＳ、形态硫分析、硫同位素、物相分析等方法综合研究了湘西晚震旦世－早寒武世黑色岩系的地球化学特征和形成条件。湘西黑色岩系以富有机质为特征，其来源为藻、菌类生物，形成于缺氧环境。缺氧标志包括有机碳、黄铁矿含量、硫同位素、稀土元素的分布、δＵ、ＤＯＰ和生物标志物等参数。在黑色页岩中富集Ｖ、Ｎｉ、Ｍｏ等微量元素，并在局部地区形成具有工业价值的矿床。研究认为，生物、有机质对一些元素的吸收、络合作用是黑色岩系中富集多种元素的主要原因。稀土元素的分布和硫同位素的组成表明湘西黑色岩系形成于缺氧的陆架边缘浅海环境，海底热液活动为其提供了丰富的物质来源。
In this paper, the geochemical characteristics and formation conditions of the Late Sinian-Pre-Cambrian black rock series in western Hunan were comprehensively studied by GC-MS, ICP-MS, morphological sulfur analysis, sulfur isotope and phase analysis. The Xiangxi black rock series is characterized by rich organic matter and its origin is algae and fungi, forming in anoxic environments. Hypoxia markers include organic carbon, pyrite content, sulfur isotopes, distribution of rare earth elements, δU, DOP and biomarkers. In the black shale enrichment of V, Ni, Mo and other trace elements, and in the local formation of deposits of industrial value. The study suggests that the biological and organic matter absorption and complexation of some elements are the main reasons for the enrichment of various elements in black rock series. The distribution of REE and the composition of sulfur isotopes indicate that the black rock series in the western Hunan formed in the shallow sea environment on the edge of anoxic plateau, and the seafloor hydrothermal activity provided a rich source of matter.