karst topography

Science Dictionary
karst topography   (kärst)  Pronunciation Key 


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A landscape that is characterized by numerous caves, sinkholes, fissures, and underground streams. Karst topography usually forms in regions of plentiful rainfall where bedrock consists of carbonate-rich rock, such as limestone, gypsum, or dolomite, that is easily dissolved. Surface streams are usually absent from karst topography.
The American Heritage® Science Dictionary
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