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pyroclastic rock
(redirected from Pyroclastics)

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pyroclastic rock [¦pī·rə¦klas·tik ′räk]
(petrology)
A rock that is composed of fragmented volcanic products ejected from volcanoes in explosive events.
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Magmas, lavas, pyroclastics, and granites, rocks of lesser density and greater volume than those of the underlying mantle, are created.
Triple geospheres: oxidic carapace: hydridic mantle: ultimetal core by Hunt, Charles Warren / Frontier Perspectives
The effects of the 536 volcano far exceed those of the eruption in 1815 of Tambora (Indonesia), a volcano that discharged 10 times the amount of pyroclastics (fragmental volcanic material blown into the atmosphere) as the Krakatoa eruption in Indonesia in 1883 (SN: 8/27/83, p.
Excavating words: a geological tool; human histories unravel ... by Weisburd, Stefi / Science News
Presumably the olivine-rich lapilli tuff lies below the quartz-rich lapilli tuff and somewhere within this complex lies the magmatic lamproite that produced these pyroclastics.
Caldera Resources Inc.: Ellendale East Diamond Project-Western ... by Business Wire
 
 
 
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