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一九七一年,河南省地质局十二队,在吴城盆地首次发现产于下第三系的古天然碱矿。通过勘探证实,这个古天然碱矿规模大,居国内之冠;品位富,开发建设条件良好。在吴城天然碱矿发现之前,十二队已在南阳盆地搞了二年多的找盐工作,重点放在毗邻含盐丰富的江汉盆地且沉积特点相似的瓦店凹陷。但瓦店凹陷面积达2000平方公里,沉降幅度为3000—4000米,由于千米钻机打不到见效的深度,使找盐工作受挫。失败后总结出一条经验,应从实际探矿能力出发,把工作重点放在小盆地。通过分析对
In 1971, the 12th team of Henan Bureau of Geology discovered for the first time in the Wucheng Basin paleotronics produced in the Lower Tertiary. Confirmed by exploration, this ancient natural alkali mine large scale, ranking the highest in the country; grade is rich, good conditions for the development and construction. Prior to the discovery of the Tacheng natural alkali mine in Wucheng, the 12th Brigade has engaged in salt seeking for more than two years in the Nanyang Basin, focusing on the adjacent Wadian Depression with similar characteristics in the salt-rich Jianghan Basin. But Wadian depression area of 2,000 square kilometers, the settlement rate of 3000-4000 meters, due to the impact of the drill can not hit the depth of 1000 meters, salt work frustrated. After the failure to sum up an experience should be based on the actual prospecting capacity, the focus of the work on the small basin. By analyzing the right