吉林省喀斯特洞穴的基础研究

Basic Researches on Karst Caves in Jilin Province

论述了吉林省喀斯特洞穴的分布、形成条件、景观特征及其主要形成原因。经野外实地考察发现吉林省共有喀斯特洞穴５０余个，它们分布在通化市、白山市及其附近地区，这里碳酸盐岩厚度较大，纯度较高，为洞穴的形成奠定了物质基础。以第三纪为主要发育阶段的古喀斯特洞穴在数量上占明显优势。洞穴属于水平溶洞类型，多数规模较小，但在适宜岩溶发育的地区，也可形成几百米长的大型溶洞。洞内有化学沉积物、崩塌堆积物等，地下河不发育。

t is discussed the distribution,formative condition,landscape characteristics and major formative factor of the karst caves in Jilin province.lt is investigated the karst caves on the spot and found that there are about 50 karst caves in Jilin province, which are distributed in Tonghua City,Baishang City and nearby regions. The carbonate rock with bigger thickness and pureness has laid a material base for the formation of caves.In quantity,the old karst caves occupy a dominant position, which mainly grew in Tertiary period.The karst caves belong to the type of level caves, most of them are small, but in the area suitable to the growth of karst caves,there are large caves of several hundred meters long. In caves there are chemical deposit,collurial deposit and ect. underground streams don't develop.