Geochemistry Characteristic and Origin of Paleogene Dolomite in Kuqa Depression, Tarim Basin

• 责任者：Liu Chun (Hangzhou Research Institute of Petroleum Geology ; PetroChina ; Hangzhou 310023 ; China) ; Zhang Huiliang
• 刊名：Acta Sedimentologica Sinica
• 出版年：2010
• 卷期：28(3)
• 关键词：白云岩 ; dolostone ; 库车坳陷 ; Kuche Depression
• 页码：p.518-524
• 图表：6 illus., 1 table, 12 refs.
• 分类号：0803
• issnNo：ISSN1000-0550
• isbnNo：CN62-1038/P

In order to analyze the dolomite origin of Paleogene dolomite (Kumugeliemu Group) in Kuqa Depression, this paper took the thin slice to dye, trace element and stable isotope test as method, and systematically analyzed this set of dolomite geochemistry characteristic and their origin. The research indicated that the dolomite mainly divides into the creaming dolomite and micrite (powder crystal) dolomite. The trace element and the isotope characteristic of dolomite indicated that it forms in high-salinity, high Mg/Ca ratio, and the strong reducing water environment.