英语词汇“θ4914”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	θ4914
释义	the world > the earth > structure of the earth > structural features > volcanic formations > [noun] > lava formations > others (12) pahoehoe1825 Smooth, undulating, or corded volcanic lava. Cf. aa, n.2 malpais1844 (a) Rugged or difficult country of volcanic origin; a region of bare solidified lava. (b) Basaltic lava. spatter rampart1856 In combinations, as ring wall1858 Now chiefly Science Fiction. A roughly circular ring of cliffs or mountains enclosing an area such as a crater or a lunar mare. aa1859 A kind of volcanic lava with a rough, jagged surface covered with loose clinkers. Frequently attributive, esp. in aa lava. Contrasted with pahoehoe. pedregal1881 In Mexico and the south-western U.S.: a rough and rocky tract, esp. in a volcanic region; an old lava field. pillow structure1897 a rock structure in which numerous closely fitting pillows (sense 7) are fused together. pillow1899 Geology. A body of solidified lava resembling a pillow in shape, characteristic of a volcanic eruption underwater and usually occurring in… pillow lava1903 lava exhibiting pillow structure. block lava1914 a lava field composed of angular blocks; = aa, n.2 ring dyke1915 a dyke that is arcuate or roughly circular in plan, formed by upwelling of magma in a conical or cylindrical fracture system. louderback1930 A cap of old lava on a tilted fault-block.
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