Tufa Rock

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Title: Tufa Rock
Author: Niebergall, Ernst
Description: Tufa rock is a porous rock formed when water with a heavy lime content evaporates. Abundant limestone deposits, lots of underground rivers, sink holes - like the Blue Hole - and marshes around Castalia made a fertile ground for the growth of tufa rock. Evaporating water left mineral deposits that encrusted twigs, small pebbles, etc. and grew into unique rock formations.
Permanent Link: http://hdl.handle.net/2374.OX/2018
Date: 19, 1909

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