石英粗面岩
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Meanings
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liparite; rhyolite
A fine-grained volcanic rock, equivalent to rhyolite. Used in geology; the cross-reference 流紋岩 (りゅうもんがん) is the more common term for rhyolite in modern Japanese.
See also: 流紋岩
The geology of this area is composed of liparite.