吉兰泰盐湖位于内蒙古西部贺兰山以西的吉兰泰凹陷中。早在清代时期,该盐湖就成为我国西部重要的石盐原材料基地。经历数年来的大规模开采,该盐湖石盐资源出现了危机。虽然当地采取了一系列措施,但未能从根本上遏制可开采资源日渐减少的趋势。尽管前人多以时间为主线研究了吉兰泰盐湖的演化过程,但对盐湖资源及其空间分布的研究较少。因此,文中收集了吉兰泰盐湖地区的水文地质钻孔资料,借助地理信息系统(GIS)平台,对石盐矿层及其下伏深湖亚相地层进行空间分析,尝试探讨吉兰泰盐湖的空间演化并在当前采盐区周边探寻可采资源潜力。结合前人的研究资料,文中认为自距今10ka以来湖盆中心向东北部发生了约3km的迁移;在现今吉兰泰盐湖的工业采区的西南部地区存在约1300万t的潜在石盐储量,盐层厚约2m,延伸面积约6km~2。
Jilantai Salt Lake is located in the Jilantai sub - depression northwest of the Helan Mountain, north China. It had been a significant salt base providing salt to wide areas of western China during the early Qing Dynasty. However, the salt resource crisis is becoming an obstacle for development due to long - term mining, even though a series of remedy have been applied. And by now we have few knowledge about spatial variation of the lake resources though some works about evolution of the Jilantai Salt Lake have been done. Therefore, this research aimed at figuring out spatial distribution of halite resources through information recovered from hydro - geologic cores in the Jilantai area. Basing on Geographic Information System (GIS) platform, we analyzed spatial evolution of lake status and explore the potential halite resources in the Jilantai area. The analysis supports that the depositional center of lake in the Jilantai area migrated about 3 km northeastward during the last 10 ka, and there are approximately 13000 thousand tons of halite potential resources in the south - west periphery of nowadays mining area, with an area of 6km2 and thickness of 2m.