哈拉哈塘一间房组古地貌及岩溶发育条件研究

Palaeogeomorphology and karst development conditions of Yijianfang Formation
in Hanilcatam Area

张庆玉 梁彬 曹建文 淡永 李景瑞

中国地质大学环境学院，湖北 武汉 430074
广西壮族自治区岩溶动力学重点实验室，广西 桂林 541004

将残余厚度与残余厚度趋势面相结合，以哈拉哈塘蓬莱坝组底至一间房组顶面地震数据为基础，恢复加里东中期第一幕岩溶古地貌，自北向南划分了上岩溶缓坡地、岩溶台地、下岩溶缓坡地3类二级地貌单元。在此基础上，应用现代岩溶分类方法，根据微地貌组合形态，对二级地貌进行精细刻画，划分了8类三级地貌单元，并对其岩溶作用特征进行分析。分析认为，该岩溶期岩溶主要发育在地表至地下水位变动带附近，大型的暗河管道系统多为后期岩溶叠加改造形成。

Using the method of residual thickness and its trend surface, and based on the seismic data from the bottom of Penglaiba Formation to the top of Yijianfang Formation, this paper recovers the karst palaeogeomorphology of the first act to middle Caledonian. The 2rd-grad geomorphic units can be divided into upper karst gentle slope, karst platform and lower karst gentle slope from north to south. In the light of the division method of modern karst theory, the 2rd-grad geomorphic units are characterized finely and the eight 3rd-grad micro-geomorphic units are divided in this area. The characteristics of karstification are analyzed. The results show that the karsts mainly develop in the range of the surface to the groundwater level. The large pipeline systems of underground rivers are formed by later superimposition.

10.6056/dkyqt201404002