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diatreme
[ dahy-uh-treem ]
noun
, Geology.
- a volcanic vent produced in a solid rock structure by the explosive energy of gases in magmas.
diatreme
/ dī′ə-trēm′ /
- A volcanic pipe, filled with breccia, formed by a subterranean gaseous explosion.
- See illustration at batholith
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Example Sentences
Most maars have low rims composed of a mixture of loose fragments of volcanic rock and rocks torn from the walls of the diatreme.
From Project Gutenberg
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