山西宁武冰洞成因分析

从冰洞所处位置分析该地区在地质时期曾经是岩溶发育区,并且经历了温暖潮湿的气候作用,逐渐形成石灰岩溶洞;而且该地区曾经是山岳冰川发育区,在第四纪冰期及间冰期时,大量的积雪、冰川融水甚至破碎冰块堆积于洞中,经过复杂的物理变化,融化和重新凝结,再加上大气降水的不断渗入,在溶洞内形成各种形态冰物质的广泛分布现象———冰洞形成;以后的年代,由于当地比较特殊的地形、气候等自然地理环境因素,冰洞得以有效保存。宁武冰洞的形成是由岩溶作用和冰川作用以及环境因素共同作用的结果。

Analysis of Ice Cave Formation in Ningwu Shanxi

The analysis of ice cave position has shown that this area was a karst developed area in geological time. It underwent mild and humid climate, therefore, formed a karst cave with the time on. This area was also a mountainous glacier area. During the quaternary glacial age and interglacial age, a quantity of snow and glaciers melt, water and broken ice accumulated in the cave. They melt and congealed under complicated physical conditions. In addition, atmosphere precipitation constantly seeped in the karst cave, and all kinds of ice material extensively distributed in it. Thus, the ice cave formed. During following time, the ice cave was effectively preserved because of the particular natural and geographical environment of this area, such as topography and climate. It is concluded that Ningwu ice cave was formed under particular karstification, glaciation and environmental change.