Potassium Bromide (KBr) Contents in the Maha Sarakham Formation,
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2011-01-25
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Journal of Science and Technology Mahasarakham University - วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Abstract
Rock salt samples of drill core from potash exploration boreholes by the Department of Mineral Resources were analyzed for potassium bromide (KBr) content. The potassium bromide contents in the rock salt members have revealed the origin and the deformation of the rock salt in the past. The concentration of potassium bromide in rock salt members were plotted with depth. In addition, the profile of KBr content also indicated the tendensy of potash deposition indicated by a high corespondent with sea water concentration which eventually reached the potash deposit condition. The potash zone has overlain the lower salt member and can be found in both the Sakhon Nakhon and Korat basins. The rock salt strata in the Maha Sarakham formation in NE Thailand has three members, upper, middle and lower salt members. Generally, the potassium bromide content in the upper salt ranges from about 200 to 300 ppm, whereas the middle salt starts at about 200 ppm and increases rapidly to 500 ppm. In the lower salt, the potassium bromide content starts from about 100 ppm and keeps this rhythm until it reaches the potash bed above. After that it increases dramitcally to 500 ppm. However, the lower salt, which formed very high domes and diapirs, also shows the potassium bromide content along a very deep section at a level of about 100 ppm.
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Journal of Science and Technology Mahasarakham University - วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม; Volume 29 Number 3 July-September 2010; 249-258