贵州金瓜洞云朵石的特征及成因初探

Feature of cave cloud and its origin in Jingua cave,Guizhou,China

通过洞穴调查,发现金瓜洞洞内发育有一类特殊的次生化学沉积——云朵石,以乳房状、佛手瓜状、瓠瓜状和南瓜状为主,集中连片分布,面积达到122m2,金瓜洞可能是全球洞穴云朵石集中分布面积最大的洞穴之一。从其形态、结构和分布位置推断,属水池中沉积的异型石钟乳,即池水—滴水协同沉积。其形态多样,分布集中,面积广大,世界罕见,具有较大的观赏价值,在水下形成的钟乳石沉积过程和成因机理研究和水文环境研究上也具有重要的意义,值得加以研究和保护。

Based on cave survey,a special kind of speleothems‘cave cloud’was discovered in Jingua Cave,Guizhou,China.The cave clouds are dominated by the forms of mamaries,chayote,bottle gourd and pumpkin,etc.Covering an area of concentrated contiguous distribution of 122 square meters,the stretch of cave cloud in the cave maybe one of the largest worldwide.The authors inferred from its form,texture and distribution place that the cave cloud is a allotype of stalactite deposits in water pool,or exactly,a synergetic precipitation between pool and driping water.With its multiple shape,concentrated distribution,extensive stretch,the cave cloud is a rare speleothem in the world.It boast an important ornamental value and it is also significant to research on deposition process and genesis and mechanism of speleothems and on hydrologic environments.Hence,it deserve further research and protection.