Diatreme
Diatreme A Diatreme is a volcanic pipe or feature formed ... not it is related to volcanism. Some diatreme explosions may result from the interaction of ... to be volatile charged piercement structures or diatreme volcanic features from the lower crust or ... ore minerals have been referred to as diatreme in nature. An intrusion is the ...
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Maar
... of a maar presumably would expose a diatreme. Maars range in size from 200 to ... rocks torn from the walls of the diatreme. Maars occur in the western United States ... wallrocks (sandstone, shale, limestone) of the underlying diatreme, as well as random chunks of ancient ...
http://en.wikipedia.org/wiki/Maar - 2k - Cached - Similar pages

Sedimentary exhalative deposits
... which breached overlying sediments, forming a breccia diatreme Mineralising fluid flowed upwards through the concave feeder zone of the breccia diatreme, discharging onto the seafloor Ore fluids debouched ...
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Talk:Volcanic pipe
... seems to agree with that listed at diatreme. - Bantman 18:00, 13 January 2006 (UTC ... that describes volcanic pipes. As for the diatreme article, it does not say that volcanic ...
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Argyle diamond mine
... Argyle pipe". The volcanic pipe is a diatreme, composed of olivine lamproite, present as tuff ... the pipe and converted to graphite. The diatreme pipe formed by explosive eruption of the ...
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Kimberlite
... Kimberlite pipes are the result of explosive diatreme volcanism from very deep mantle derived sources ... expands to form a conical to cylindrical diatreme, which erupts to surface. The surface expression ...
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Breccia
... overpressured sedimentary strata, to large-scale intrusive diatreme breccias, or even some synsedimentary diatremes formed ... also Impact crater Hydrothermal circulation Vein (geology) Diatreme and the entry on Kimberlites
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Swabian volcano   (translated from German)
... specified Swabian volcano covers 355 outbreak places (Diatreme) in a periphery of for instance 25km ...
http://de.wikipedia.org/wiki/Schwäbischer_Vulkan - 3k - Cached (German) - Wikipedia (German) - Similar pages

Talk:Diapir
... though :-). I see you have made a diatreme page - good, but it too needs a ...
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Lamproite
... old. Lamproite volcanology is varied, with both diatreme styles and cinder cone or cone edifices ...
http://en.wikipedia.org/wiki/Lamproite - 11k - Cached - Similar pages