MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>Preliminary Studies of on Geochemistry and Post-Depositional Change of Dong Tai Potash Deposit in mas-microsoft-com:office:smarttags" />Laosmas-microsoft-com:office:office" />

• 责任者：Zhang Xiying (Key Laboratory of Salt Lake Resources and Chemistry ; Qinghai Institute of Salt Lakes ; Chinese Academy of Sciences ; Xining 810008 ; China) ; Ma Haizhou
• 刊名：Mineral Deposits
• 出版年：2010
• 卷期：29(4)
• 关键词：钾盐矿床 ; potash deposit ; 老挝 ; Laos
• 页码：p.713-721
• 图表：3 illus., 30 refs.
• 分类号：1002
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

MARGIN: 0cm 0cm 0pt" class=MsoNormal>The study area lies in the eastern margin of mas-microsoft-com:office:smarttags" />Sakon Nakhon Basin within Khorat plateau where there exists one of the world’s largest potash deposits. The data from boreholes reveal the existence of abundant potash. The evaporite-bearing formation comprises three members (Lower, Middle and Upper) which are mainly composed of evaporite separated red-colored siliciclastic rocks. The potash layer exists in the uppermost part of the Lower Member. In the light of an analysis of sections and strata, the salt tectonic type in this area is a low-structure and low-maturity anticline which is closely related to differential loading. The existence of salt tectonics influences not only the distribution and thickness of potash but also the geochemical characteristics of rock salts.  mas-microsoft-com:office:office" />