diatreme

A diatreme, sometimes known as a maar-diatreme volcano, is a volcanic pipe associated with a gaseous explosion. When magma rises up through a crack in Earth's crust and makes contact with a shallow body of groundwater, rapid expansion of heated water vapor and volcanic gases can cause a series of explosions. A relatively shallow crater is left, and a rock-filled fracture in the crust. Where diatremes breach the surface they produce a steep, inverted cone shape.

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pipe
volcanic pipe, 

volcanic pipe, 

• Volcanology of the Lake Wanaka diatreme in the Alpine Dike Swarm, New Zealand^@ 2016 master's thesis by Samuel Peter Maloney at University of Otago
• Evolution and dynamics of a monogenetic volcanic complex in the southern Hopi Buttes Volcanic Field (AZ, US): magma diversion and fragmentation processes at the Jagged Rocks Complex^@ 2017 doctoral thesis by Giuseppe Re at University of Otago
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Location: KML, Cluster Map, Maps,

Frameless

Peru - Altiplano1

Heart Mountain 030

Outline of a study: Mineral inclusions in diamonds were analyzed to determine the origin of the Bosveld Igneous Complex's platinum deposits

Zes tekeningen waarmee het ontstaan en voorkomen van diamant in de Premies Mine , Bestanddeelnr 252-0339

Mount Etna Main Crater from N 1979-06-12 (2)

Rift cave

VolcanicPipe

The Moses Rock Dike diatreme

Gold after sylvanite lining fracture in phonolite, Cripple Creek Diatreme

Sylvanite sample

Type	Subtype	Date	Description	Notes	Source
commons	image		Peru - Altiplano1		Commons
commons	image		Heart Mountain 030		Commons
commons	image		Outline of a study: Mineral inclusions in diamonds were analyzed to determine the origin of the Bosveld Igneous Complex's platinum deposits		Commons
commons	image		Zes tekeningen waarmee het ontstaan en voorkomen van diamant in de Premies Mine , Bestanddeelnr 252-0339		Commons
commons	image		Mount Etna Main Crater from N 1979-06-12 (2)		Commons
commons	image		Rift cave		Commons
commons	image		VolcanicPipe		Commons
commons	image		The Moses Rock Dike diatreme		Commons
commons	image		Gold after sylvanite lining fracture in phonolite, Cripple Creek Diatreme		Commons
commons	image		Sylvanite sample		Commons