ceiling formation soda straws carlsbad caverns national park new mexico |
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| navigate by keyword : soda straw speleothem hollow mineral cylindrical tube tubular stalactites straws water rock caves growth stalactite calcite dripping deposits crystal carbonic acid science caption droplets ceiling carlsbad calcium carbonate national park cave formation roof cavern dripstone geography geology deposit speleology subterranean underground united states desert guadalupe |
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| A soda straw is a crystal type speleothem in the form of a hollow mineral cylindrical tube. They are also known as tubular stalactites. Soda straws grow in places where water leaches slowly through cracks in rock, such as on the roofs of caves. One inch of growth equals about 100 years. A soda straw becomes a stalactite when the inside of the tube becomes blocked. Unable to run down the inside, water runs down the outside, depositing calcite and thickening the soda straw. The stalactite continues to grow as long as the water keeps dripping. |
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