rhyolite
rhyolite — 名詞
1. A light-coloured volcanic rock, often grey, pink, or pale brown, that forms when
流紋岩
一種淺色酸性火山岩
A light-coloured volcanic rock, often grey, pink, or pale brown, that forms when thick, slow-moving lava — rich in silica, the same mineral found in sand and glass — cools and hardens on the Earth's surface.
Pale grey hills near the village are made of rhyolite, a light fine-grained rock.
村莊附近淺灰色的山丘是由流紋岩構成的，這是一種質輕、顆粒細小的岩石。
uncountable noun for general reference
Dr. Okafor collected pinkish-grey rhyolite with a fine grain, showing fast surface cooling.
奧卡福爾博士採集了淺灰粉色的流紋岩，其細小顆粒顯示岩漿在地表快速冷卻。
The pink stone in the wall is rhyolite, with wavy bands from thick lava flow.
老牆上的粉紅色石材是流紋岩，表面因濃稠岩漿流動而形成波浪狀紋理。
When the volcano erupted, thick rhyolite lava flowed slowly down the slope and then hardened.
火山爆發時，濃稠的流紋岩熔岩緩緩流下山坡，然後硬化。
Geologists study rhyolite's light colour and fine grain to find old surface lava flows.
地質學家透過流紋岩的淺色和細小顆粒，判斷哪些古老岩漿是在地表冷卻的。
- volcanic rock
broader category that includes rhyolite, basalt, andesite, and many others
- felsite
a general term for light-coloured volcanic rocks; rhyolite is a specific type of felsite
- basalt
dark-coloured volcanic rock with low silica content, opposite end of the silica scale from rhyolite
文法句型
rhyolite as an uncountable mass noun
a rhyolite (a particular type or sample)
用法筆記
Frequently used as an uncountable noun when referring to the rock in general (e.g. 'Rhyolite is common in this area'). Countable use ('a rhyolite') is possible when referring to a particular sample or variety. In geology, 'acid' in descriptions of rhyolite refers to high silica content, not chemical acidity.