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block lava
noun
, Geology.
- basaltic lava in the form of a chaotic assemblage of angular blocks; aa.
block lava
noun
- volcanic lava occurring as rough-surfaced jagged blocks
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Word History and Origins
Origin of block lava1
First recorded in 1910–15
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Example Sentences
Multiple efforts to build barriers to block lava flows from homes failed.
From Los Angeles Times
But in traveling, "on, on," is the word; so on we went, stumbling up through the triturated and block lava, as if Fame, or something else equally valuable, had been at the summit.
From Project Gutenberg
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