| 单词 | volcanic glass |
| 释义 | > as lemmasvolcanic glass volcanic glass n. = obsidian n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > lava > vitreous obsidian stone1601 pitchstonea1728 volcanic glass1780 obsidian1794 pearlstone1806 retinite1808 marekanite1818 perlite1833 Pele's hair1844 Pele's tears1930 1780 W. Hamilton in Philos. Trans. (Royal Soc.) 70 82 Those bubbles, being thin, shewed that this volcanic glass has the kind of transparency of our common glass bottles. 1895 Argosy Nov. 175/2 It is a columnar structure several hundred feet high composed entirely of volcanic glass. 2005 M. Bjornerud Reading Rocks ii. 40 What forms is obsidian, or volcanic glass, an amorphous (non-crystalline) solid that is structurally still a liquid. < as lemmas |
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