Added | Sun, 01/01/2017 |
Источники | |
Дата публикации | Sat, 31/12/2016
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Tuff is one of the forms of calcium carbonate. They are formed in places where the earth's surface leave the mineral springs. Deposits of calcium carbonate or siliceous material from the solution to form unusual formations resembling spires and columns. They can reach a height of nine meters.
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