Variation of Isotope Compositions and Deuterium Excess of Brines in Sichuan Basin
详细信息
- 责任者：Yin Guan (Geochemistry Department ; College of Nuclear Technology and Automatic Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Ni Shijun
- 刊名：Journal of Mineralogy and Petrology
- 出版年：2008
- 卷期：28(2)
- 关键词：卤水 ; brines ; 四川盆地 ; Sichuan Basin
- 页码：p.56-62
- 图表：3 illus., 1 table, 15 refs.
- 分类号：1002
- issnNo：ISSN1001-6872
- isbnNo：CN51-1143/TD
摘要
The isotope compositions and parameter of deuterium excess of brines, which were sampled in Sichuan basin, show obvious distribution rule. In the basin, water samples from the brine-bearing strata of different ages, show various deuterium excess (d) with evident decreasing tendency as the age of strata gets older. The brine-bearing strata of Triassic Leikoupo-Jialingjiang Formations, Permian Maokou Formation, Cambrian and Sinian are all carbonate rocks which have intensive action with water. The deuterium excesses of their brines have increased to different extents, depending on the amount of mixing precipitation. The change and distribution of d values of the brines from different strata of Triassic are related to the burial of stratum depth. The deuterium excesses of brine become lower with the increase of burial depth of the stratum.