单词 | ignimbrite |
释义 | Word Frequency ignimbrite(ˈɪɡnɪmˌbraɪt) noun a rock formed by the deposition at high temperature and the consolidation of a nu ée ardente or other type of ash flow, being a complicated mixture of volcanic materials welded together by heat, hot gases, and pressure Also called: welded tuft. tuft Word origin C20: from Latin ign(is) fire + imbr(is), imber shower of rain + -ite1 |
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