摘要
采用X射线、光谱半定量分析、化学分析等分析技术,对青东井田早二叠世含煤地层能指示沉积环境的矿物和微量元素做了系统测试分析,采用GB/T 14506.28-2010《硅酸盐岩石化学分析方法》和X射线荧光光谱法测定黏土矿物、轻重矿物以及微量元素的含量,并探讨了黏土矿物、轻重矿物、硼含量、锶、钡含量和锶钡比值(Sr/Ba)以及其他元素的含量和比值对沉积环境的指示意义。研究认为:矿物成分和地球化学特征均显示青东井田早二叠世含煤地层发育三角洲沉积环境,为海陆交互相沉积。
Minerals and trace elements which can indicate sedimentary environment of the early Permian coal-bearing stratum in Qingdong well field were tested and analyzed systematacially using Xray、spectral semi-quantitative analysis、chemical analysis and other analysis techniques. Clay minerals,light and heavy mineral and trace elements were examined by silicate rock chemi-cal analysis(GB/T14506.28-2010) and X-ray fluorescent spectroscopy.Meanwhile,the correspondin-g relationships between the contents of clay minerals、light and heavy mineral、boron、Sr、Ba、tatio of Sr/Ba and sedimentary environment are discussed. The results show that mineral compo-sition and geochemical characteristics indicate the delta depositional environment was develop-ed in tthe Early Permian coalbearing stratum in Qingdong well field,being a marine and conti-nental alternative deposition.
作者
索荣辉
方家虎
SUO Rong-hui;FANG Jia-hu(Shaanxi Geological and Mining 908 Environmental Geology Co.,Ltd.,Xi′an 710600,China;School of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《煤炭技术》
CAS
2019年第10期49-52,共4页
Coal Technology
关键词
青东井田
早二叠世
矿物成分
微量元素
沉积环境
Qingdong well field
early Permian
mineral composition
trace elements
sedimentary environment
