摘要
本文通过对重力、地震等资料的综合分析,着重探讨了鱼台盆地的构造特征,指出了鱼台盆地为一断陷盆地,其中新生代地层沉积的中心就是李阁重力负异常的中心;济宁盆地与鱼台盆地是相连通的,并无深大断裂分割,从而扩大了该区找钾的工作范围及成盐成钾的物质来源。文中利用类比法,认为盆地南部见盐厚度达千米,有巨厚的盐岩层和大量的石膏、硬石膏以及钙芒硝存在,北部同样应该存在上述物质,而且北部中新生代地层沉积厚度大,构造条件相对有利,是成盐成钾的有利地区,并且认为李阁重力异常中心区是成盐成钾的较有利地段。
This paper mainly approaches the tectonic characteristics of the Yutai Basin through synthetical analysis of gravitation and earth- quake data.The Yutai Basin is a faulted basin.The Cenozoic sedi- mentary center of the basin is also the center of Lige gravity nega- tive anomaly.The Jining and Yatai Basins are connected and not cut apart by the deep-seated fault structure.Therefore.the ranges of seeking for potash salt and the material sources of potassic salt and other saline deposits are extendel in the area.By analogy, sincethere is a nearly one kilometer thick saline deposit,containing thick rock salt beds and a large amount of gypsum.anhydrite and mirabilite in the south of the basin there should be a similar saline deposit in the north part of the basin.The north part has a larger thickness of Mesozoic and Cenozoic formation and advantageous tecto- nic condition.This part,consequently,is an area favourable to forming potash salt and other saline deposits.The paper considers that lige gravity anomaly center is also the adantageous area of seeking for potassic and saline deposits
