block lava

block lava

noun Geology.
basaltic lava in the form of a chaotic assemblage of angular blocks; aa.

Origin:
1910–15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Block lava is always a great word to know.
So is erosion. Does it mean:
process where the surface of the earth is worn away by the action of water, glaciers, winds, waves
tectonic boundary where two plates are moving toward each other
Collins
World English Dictionary
block lava
 
n
volcanic lava occurring as rough-surfaced jagged blocks

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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