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pillow lava
(redirected from Pillow lavas)

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pillow lava
n.
Lava that forms from an underwater eruption and is characterized by pillow-shaped masses.
pillow lava
n
(Earth Sciences / Geological Science) lava that has solidified under water, having a characteristic structure comprising a series of close-fitting pillow-shaped masses
pillow lava  (pl)
Lava that forms from an underwater eruption and is characterized by pillow-shaped masses. Pillow lava forms when hot lava is suddenly exposed to cold water, forming a sacklike membrane that is filled with additional cooling and solidifying lava. The outer membrane is usually finer grained than the inner lava.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.pillow lava - lava that hardened in rounded shapes suggestive of pillows; believed to result from underwater eruptions
lava - rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
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These were the pillow lavas of the Precambrian, the ancient bedrock which underlies this south western corner of Anglesey.
Wild Wales: Riding into a dream world by Daily Post (Liverpool, England)
The outermost centimeter or so of those pillow lavas is riddled with tubular structures that range from 1 to 9 micrometers in diameter and up to 200 [micro]m in length.
Hints of microbes in ancient ocean rocks by Perkins, S. / Science News
The massive sulphide zones are hosted at the contact between mafic pillow lavas and massive basalt, and have been classified as volcanogenic massive sulphide (VMS) deposits.
Klondike Star Discovers New Mineralized Zones at Ultra Project by Business Wire
 
 
 
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