- a volcanic vent produced in a solid rock structure by the explosive energy of gases in magmas.
Origin of diatreme
1930–35; dia- + Greek trêma hole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for diatreme
Most maars have low rims composed of a mixture of loose fragments of volcanic rock and rocks torn from the walls of the diatreme.Volcanoes
Robert I. Tilling
- A volcanic pipe, filled with breccia, formed by a subterranean gaseous explosion. See illustration at batholith.
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