Mondo Knows Facts
Dripping mineral water builds stalactites and stalagmites in caves
Precipitated calcium carbonate forms hanging icicle structures and floor mounds
Stalactites and stalagmites form in karst cave systems when rainwater absorbs carbon dioxide from soil to form weak carbonic acid. As acidic groundwater trickles through limestone bedrock, it dissolves calcium carbonate before entering open cave caverns. When water droplets release carbon dioxide into cave air, dissolved calcite precipitates to form dripstone structures over centuries.
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Tags: earth science, caves, geology
Dripping mineral water builds stalactites and stalagmites in caves: the short answers
- Where does this come from, and can I check it?
- Precipitated calcium carbonate forms hanging icicle structures and floor mounds. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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- Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
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