煤田地质与勘探2017，Vol.45Issue(2)：14-21,8.DOI:10.3969/j.issn.1001-1986.2017.02.003
淮南煤田山西组泥页岩微量元素地球化学特征及其意义
Geochemistry characteristics of trace elements of mud shale of Shanxi Formation in Huainan coalfield and its significance
摘要
Abstract
The characteristics of trace elements in mud shale have significant importance for invesion of paleao-geog-raphic and paleo-chimate during formation of mud shale. The geochemical characteristics and its significance of trace elements of Shanxi Formation mud shale in Huainan coalfield were discussed by collection of mud shale samples and testing the content of the trace elements in shale with ICP-MS. The results show that elements B, Cr, U, Ga, Li, Sn, Pb, Mo, Th, W are enriched, and Cd, Co, Cu, Ti, Zn, Sc, Ba, Mn, Ni, Sr are of deficit; The results revealed that Shanxi For-mation in Huainan coalfield was formed in a warm and humid and brackish-high saltwater sedimentary environment. The deposition system was open, the depositional environment was of weak oxidation-reduction. It was mainly the weak re-duction-reducing environment, showing the characteristics of the evolution from the early weak oxidative environment to the later reductive environment. Correlation analysis of the results of U / Th, Ni / Co, Sr / Cu, B / Ga, Sr / Ba, TOC and other geochemical parameters indicate that salinity and redox conditions may be affected by many factors, the original amount of organic matter accumulation was the main affecting factor on the content of organic matter in the mud shale from Shanxi Formation, salinity and redox conditions affected the evolution of organic matter toward different macerals. Warm moist climate and reducing environmental provided favorable conditions for organic matter accumulation and preservation, provided the material basis for the shale gas reservoir.关键词
淮南煤田/微量元素/地球化学特征/泥页岩Key words
Huainan coalfield/trace elements/geochemical characteristics/mud shale分类
天文与地球科学引用本文复制引用
高德燚,平文文,胡宝林,刘会虎,徐宏杰,程乔,张萍..淮南煤田山西组泥页岩微量元素地球化学特征及其意义[J].煤田地质与勘探,2017,45(2):14-21,8.基金项目
国家自然科学基金项目(41302129) （41302129）
安徽省自然科学基金项目(1408085QE88) （1408085QE88）
山西省煤层气联合研究基金项目(2012012008) National Natural Science Foundation of China(41302129) （2012012008）
Natural Science Foundation of Anhui Province(1408085QE88) （1408085QE88）
Shanxi Provincial Basic Research Program—Coalbed Methane Joint Research Foundation(2012012008) （2012012008）
