Characteristics of Fluid Inclusions in the Lacustrine Hydrothermal Sedimentary Rock from the Xiagou Formation, Lower Cretaceous in Qingxi Sag,
- 责任者：Wen Huaguo (State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation ; Institute of Sedimentary Geology ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zheng Rongcai
- 刊名：Acta Geologica Sinica
- 出版年：2010
- 卷期：84(1)
- 关键词：沉积岩 ; sedimentary rocks ; 流体包裹体 ; fluid inclusions ; 酒泉盆地 ; Jiuquan Basin
- 页码：p.106-116
- 图表：5 illus., 3 tables, 39 refs.
- 分类号：0803
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
Based on the analysis of geologic background and rock textures, fluid inclusions in the lacustrine hydrothermal sedimentary rock from the Xiagou Formation, Lower Cretaceous in the Qingxi sag, Jiuquan basin was studied. The results show that native fluid inclusions in the hydrothermal sedimentary rock are dominated by vapor-liquid types, with minor haploid liquid and haploid vapor inclusions as well as triune inclusions of filial mineral. The study indicates that ore-forming hydrothermal fluid system which formed hydrothermal sedimentary rocks such as various barite, ankerite and fluorite shows zonation changes in terms of temperature, salinity, density and pressure, decreasing from the main exhalative-channel-branch exhalative-channel-exhalative mouth-near exhalative mouth-distal basin.