| 单词 | lava tunnel |
| 释义 | > as lemmaslava tunnel lava tunnel n. = lava tube n. at Additions above. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > lava > tubular cave occurring in lava flow lava tunnel1905 lava tube1927 1905 Bull. U.S. Geol. Surv. No. 252. 70 Access can be gained to a subterranean chamber of the ordinary type of lava tunnels, formed by the outflow of molten lava from beneath the thick, rigid crust of a sheet of basalt. 1976 P. Francis Volcanoes iv. 143 Lava tunnels result from the rapid cooling of the surface and the side of a flow. 1991 H. A. Summerfield Global Geomorphol. xix. 485/2 The Hadley Rille itself is thought to be a massive collapsed lava tunnel, smaller versions of which are known from lava fields on Earth. < as lemmas |
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