⚙️ how
How do karst landscapes form from limestone?
GeologyKarst
Quick Answer
Slightly acidic rainwater dissolves calcium carbonate in limestone over long periods. This creates sinkholes, underground drainage, and sometimes dramatic towers and caverns.
The Full Story
Karst forms when water absorbs carbon dioxide from the air and soil, making weak carbonic acid. That acidic water slowly dissolves limestone and other soluble rocks like gypsum and dolomite along cracks and bedding planes. Over time, the rock is eaten away to create sinkholes, disappearing streams, and underground drainage systems. Famous karst regions include parts of the Balkans, southern China, and the Florida peninsula.
Key Facts
1.Rainwater becomes mildly acidic after absorbing carbon dioxide
2.Limestone, gypsum, and dolomite are especially prone to dissolution
3.Karst creates sinkholes and underground drainage
YouTube Angle
Suggested video title for this topic:
"How does rainwater carve hidden caves and sinkholes?"