NEW USGS product - Karst & Pseudokarst in the U.S.A. Karst landscapes typically form where soluble bedrock (limestone, rock salt) occur in the subsurface. Common karst features, include sinkholes, caves, and disappearing streams. The US Geological Survey has just released a new digital map compilation and database for karst and pseudokarst terrain in the U.S. and its territories. See the maps for some details. pubs.usgs.gov/of/2014/1156/
Posted on: Mon, 11 Aug 2014 19:47:15 +0000
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