• 责任者：Hu Guangcheng (Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Bao Zhidong
• 刊名：Journal of Mineralogy and Petrology
• 出版年：2011
• 卷期：31(3)
• 关键词：白云石化 ; dolomitization ; 早三叠世 ; Lower Triassic ; 湖北 ; Hubei Province
• 页码：p.96-102
• 图表：5 illus., 2 tables, 20 refs.
• 分类号：0803
• 出版序号：288
• issnNo：ISSN1001-6872
• isbnNo：CN51-1143/TD

The Jialingjiang Formation of Lower Triassic in the southwestern Hubei Province consists primarily of carbonate rocks characterized by limestone interbedded with dolomite. According to field outcrop investigation and laboratory analysis, the dolomite has been divided into micritic dolomite and doloarenite respectively. Based on the study of petrological characteristics, combined with the research of cathodoluminescence and geochemical properties of trace elements, carbon and oxygen isotopes, the genesis of dolomitization in the Jialingjiang Formation is thoroughly investigated. It is considered that the genesis of micritic dolomite is related to penecontemporaneous dolomitization characterized by birdseyes, fenestral fabrics, gypsum pseudomorph, lower ordering degree and red or purplish red cathodeluminescence.