| 单词 | white rock |
| 释义 | > as lemmaswhite rock white rock n. Mining (now rare) = white trap n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > trap > basalt > white rock white rock1789 white trap1853 1789 R. Kirwan in Trans. Royal Irish Acad. 1788 2 Science 166 (table) At Litchfield [in coal mines]... White rock. 1885 A. Geikie Text-bk. Geol. iv. viii. §2. 560 Microscopical examination shows that this ‘white-rock’ or ‘white-trap’ is merely an altered form of some diabasic or basaltic rock. 1902 Rep. 9th Meeting Australasian Assoc. Advancement Sci. 293 A Silurian basalt or melaphyre occurs at Zeehan, where it is known as the ‘white rock’. < as lemmas |
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