高校地质学报2018，Vol.24Issue(3)：371-379,9.DOI:10.16108/j.issn1006-7493.2017104
泥岩埋藏成岩过程中绿泥石的演化途径及意义
Chloritization Sequences in Mudstone during Diagenesis and Its Geological Significance
摘要
Abstract
Clay minerals are important components of argillaceous sedimentary rocks. During the middle and late stages of diagenesis, a variety of minerals such as smectite, illite, kaolinite, and berthierine are prone to being converted to chlorite due to the combination of temperature, pressure, cation, water/rock ratio and other factors, resulting in increased chlorite content. However, because the chloritization conditions and reaction mechanisms of each mineral are different, chemical composition and configuration of chlorite vary greatly. Therefore, we can use XRD, EMPA and HRTEM to identify different types of chlorite, and further to distinguish different conversion sequences and analyze their conversion mechanisms. Recognizing the multiple conversion sequences of chloritization can help study the influence of conversion sequence on the chemical composition of chlorite and further improve the application of chlorite geothermometer. In addition, in some of the conversion sequences, the chloritization process consumes water and releases hydrogen, while others consume hydrogen. And hydrocarbon generation is a process of deoxidation and hydrogenation. Therefore, the identification of different conversion sequences can provide a basis for the study of the influence of mineral evolution on the hydrocarbon generation.关键词
绿泥石化/转化序列/转化机制/绿泥石地温计/有机质生烃Key words
chloritization/chloritization sequences/chloritization mechanism/chlorite geothermometer/hydrocarbon generation分类
天文与地球科学引用本文复制引用
杜佳宗,蔡进功,谢忠怀,王学军..泥岩埋藏成岩过程中绿泥石的演化途径及意义[J].高校地质学报,2018,24(3):371-379,9.基金项目
国家自然科学基金项目(41672115) （41672115）
国家油气重大专项项目(2016ZX05006001-003)联合资助 （2016ZX05006001-003）
