摘要
The salt deposits in Vientiane Plain occurrence in Paleocene Tagong Formation. The main Kalium-bearing minerals are carnallities and a little of sylvinite. During mineralization period, the Tagong Formation and salt deposits were controlled by NW-trending boundary faults and Tagong syncline. After mineralization period, the salt deposits were controlled by fold(salt syncline and salt anticline). The salt deposits formed broad and gentle fold under the horizontal stress. Inside syncline, deposition rate is relatively quickly and the thickness of clastic rocks upper salt seam is relatively large. On anticline, the thickness of clastic rocks upper salt seam is relatively thin. There are large density differences between salt deposits and clastic rocks, and the thickness of clastic rocks in the anticline is different from the one in syncline, so the salt deposits form differential loading.