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solutional cave
A solutional cave is a cave usually formed in the soluble rock limestone. It is the most frequently occurring type of cave. It can also form in other rocks, including chalk, dolomite, marble, salt beds, and gypsum.
== Process ==
Bedrock is dissolved by natural acid in groundwater that seeps through bedding-planes, faults, joints and so on. Over geological epochs these openings expand as the walls are dissolved to become caves or cave systems.
The portions of a solutional cave that are below the water table or the local level of the groundwater will be flooded.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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