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Volcano > Maars
The following information is about Maars.
Maars Defined
Also called "tuff cones", maars are shallow, flat-floored craters formed above diatremes as a result of a violent expansion of magmatic gas or steam. Maars range in size from 200 to 6,500 feet across and from 30 to 650 feet deep, and most are commonly filled with water to form natural lakes. (Tilling, 1985)
A maar is a low-relief, broad volcanic crater formed by shallow explosive eruptions. The explosions are usually caused by the heating and boiling of groundwater when magma invades the groundwater table. Maars often fill with water to form a lake. (USGS/VHP)
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Off-site Maars Links, User Submitted
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Thu May 21
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Wed Sep 24
Mon Mar 3
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