单词 | igneous |
释义 | igneous (ɪgniəs ) adjective [ADJECTIVE noun] In geology, igneous rocks are rocks that were once so hot that they were liquid. [technical] The site is strewn with large boulders of dense igneous rock. Collocations: igneous rock That's not entirely true: igneous rock has other uses. Times, Sunday Times Almost all magma created by the hotspot has the composition of basalt, and so the volcanoes are constructed almost entirely of this igneous rock. Retrieved from Wikipedia CC BY-SA 3.0 Given its unusual composition for an igneous rock, the magmatic nature of the carbonatite was not proposed for a long time and remained doubtful subsequently. Retrieved from Wikipedia CC BY-SA 3.0 The protolith may be sedimentary rock, igneous rock or another older metamorphic rock. Retrieved from Wikipedia CC BY-SA 3.0 The matrix of an igneous rock consists of finer grained, often microscopic, crystals in which larger crystals (phenocrysts) are embedded. Retrieved from Wikipedia CC BY-SA 3.0 |
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