世界海相钾盐矿床特征定量化分析及其意义

通过对世界26个主要的海相钾盐矿床进行详细的特征描述和定量化分析，获得了较为完善的海相钾盐矿床的特征参数值。结果表明钾矿区面积占盆地面积4.47%、矿区含矿密度为1.616×106 t/km2、盆地含矿密度值为0.045×106 t/km2、钾盐层最大厚度与总盐层最大厚度的比值为7.2%；按构造类型分类，相对活动区盆地含有最丰富的钾盐资源量，其矿盆比为6.87%、矿区含矿密度值是5.068×106 t/km2、盆地含矿密度值为0.063×106 t/km2、钾/总盐值为12.27%，其中后三项特征参数值在盆地构造类型中均属最大。讨论了世界海相钾盐矿床定量化研究的意义，不同类型钾盐矿床的特征参数有助于对我国海相盆地成钾条件研究，并可以对海相盆地中未发现钾资源储量进行远景预测与评估。

Quantitative Analysis and Significance of the Marine Potash Deposits in the World

Based on the information of potash deposits in the world, we analyzed the characteristics of importance of 26 marine origin potash deposits and found out potash characteristic parameters in marine origin. According to the information, we can draw a conclusion that the ratio of deposit area and basin area is 4.47%, the ratio of resource potential and deposit area is 1.616×106t/km2, the ratio of resource potential and basin area is 0.045×106t/km2 and the ratio of maximum thickness of potash and salt is 7.2%. Based on the sorts of structures, the basins located in comparative active zones are the most abundant potash resources distributed. Such as continental shelves, depression basins between continental edges and fold zones. Their ratio of deposit area and basin area is 6.87%, the ratio of resource quantity and deposit area is 5.068×106t/km2, the ratio of resource potential and basin area is 0.063×106t/km2 and the ratio of maximum thickness of potash and salt is 12.27%. Meanwhile, paper discussed the significance of marine origin potash deposit. It is helpful to research the factors of potash deposits forming and for us to forecast the resource potential of unfound potash deposits in the paleo marine basins in China. 