Diagenetic Environments of Calcite Veins Hosted in Marine Carbonate Rocks in Middle Yangtze Region of South China
详细信息
- 责任者：Wang Furong (Key Laboratory of Tectonics and Petroleum Resources ; Ministry of Education ; China University of Geosciences ; Wuhan 430074 ; China) ; He Sheng
- 刊名：Petroleum Geology & Experiment
- 出版年：2011
- 卷期：33(1)
- 关键词：碳酸盐岩 ; carbonate rocks ; 方解石 ; calcite ; 成岩作用 ; diagenesis ; 扬子地区 ; Yangtze Region
- 页码：p.56-60,65
- 图表：4 illus., 1 table, 31 refs.
- 分类号：0803
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
Analyses of thin slices, cathodoluminescence and carbon-oxygen isotope of calcite veins hosted in marine carbonate rocks distributed around Jingshan County in the middle Yangtze region of South China indicated that, two crystal forms including radial calcite and isometric texture calcite could be identified in calcite veins in the Triassic and the cathodoluminescence intensity was different. The δ13CPDB value of calcite veins ranged from -6.76‰ to 4.01‰ and the δ18OPDB value ranged from -17.95‰ to -5.67‰, indicating the marine phreatic environment and the mixing phreatic environment for calcite veins deposition. Calcite veins in the Triassic were sedimentary origin, and part of calcite veins in the Permian and the Ordovician suffered latter diagenetic fluid dissolution.