摘要
甲青干河河床中遍布有无数大小不等、形态各异、完整度不一的壶穴。曾有学者提出该河床地貌类型系喀斯特河谷"冰臼",而非"壶穴",是第四纪冰川活动形成的。本文从河床基岩岩性、地质构造、水流特征及溶蚀作用等因素,分析了平塘县甲青壶穴群的形成条件,提出了3种形成壶穴的流水运动模式:瀑布模式、阶状跌水模式和急流漩涡模式,并对壶穴的形成及演化过程进行了分析讨论,认为甲青壶穴群是现代河流流水侵蚀和溶蚀作用的产物,与第四纪冰川无关。
Different potholes distribute in the Jiaqing river bed. Once some researchers thought that the type of the bed was karst valley moulin,but not pothole which was formed in glacial movement in forth quarter. According to riverbed rock lithology,geologic structure,stream feature and corrosion,the formation condition of Jiaqing pothole groups in Pingtang was analyzed,3 stream motor mode of pothole formation were carried out： water fall,step drop and torrent whirlpools,the formation and evaluation process of pothole were discussed,it＇s thought Jiaqing pothole groups are the outcome of modern river erosion and corrosion,has nothing to do with glacier of forth quarter.
出处
《贵州地质》
2017年第3期199-203,共5页
Guizhou Geology
关键词
壶穴群
喀斯特
第四纪冰川
演化过程
平塘县
Pothole group
Karst
Glacier of forth quarter
Evaluation process
Pingtang
作者简介
羊永夫（1988-）,男,工程师,硕士研究生,主要从事岩溶水文地质、工程地质、环境地质工作.
