Definition of rhyolite in English:
noun[mass noun] Geology
A pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture.
- A trail up the east side of the mountain, on public land, can still be taken, but collecting is now much more difficult in the limited amount of solid, unbroken rhyolite exposed on the summit.
- The conglomerate was deposited in tributary stream channels, and the pebbles consist almost entirely of quartz-feldspar phenocrystic rhyolite.
- The only thing that bothered me about the book was in vignette 18, describing Garnet Hill, where garnet crystals in rhyolite can still be collected.
Definition of rhyolite in:
- US English dictionary
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