A Comparative Study on Strontium Isotope Composition of Dolomites and Their Coeval Seawater in the Late Permian-Early Triassic, NE Sichuan Basin
详细信息
- 责任者：Huang Sijing (State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation ; Institute of Sedimentary Geology ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Huang Yu
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(12)
- 关键词：白云岩 ; dolostone ; 锶同位素 ; strontium isotopes ; 四川盆地 ; Sichuan Basin
- 页码：p.3831-3842
- 图表：7 illus., 2 tables, 39 refs.
- 分类号：0803
- 出版序号：20122346
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Based on the research of petrography of limestones and dolomites in Changxing Formation of Permian, Feixianguan Formation and Jialingjiang Fromation of Triassic from 14 outcrop sections and wells, northeastern Sichuan Basin, 189 carbonate samples were selected and their isotope composition and contents of MgO, CaO, Mn and Sr were detected. Systematic data of the strontium isotope composition of the Late Permian-Early Triassic seawater were obtained, and then corresponding evolution curve was established. The comparative study on the strontium isotope composition of dolomites and limestones, which contain information of the coeval seawater, provides a new choice to research the time relationship between dolomitization fluids and the coeval seawater.