| 单词 | volcanic neck |
| 释义 | > as lemmasvolcanic neck c. Geology. More fully volcanic neck. A column of solidified igneous rock or consolidated rock fragments filling a volcanic vent, esp. when exposed by erosion. ΘΚΠ the world > the earth > structure of the earth > structural features > volcanic formations > [noun] > lava formations > plug neck1876 plug1882 spine1903 tholoid1912 1876 A. H. Green Geol. for Students: Physical Geol. 246 The columns of cooled lava which fill up an old volcanic chimney are known as Necks. 1882 A. Geikie Text-bk. Geol. iv. 558 Necks of agglomerate and fine tuff abound among the..volcanic regions of Scotland. 1883 Philos. Trans. (Royal Soc.) 174 287 From the hill of Afero, which, Professor Balfour states, reminded him of a volcanic neck,..come more reddish compact quartz-felsites and rhyolites of the usual type. 1939 E. D. Laborde tr. E. de Martonne Shorter Physical Geogr. (rev. ed.) xiii. 189 (caption) Note the volcanic necks round which the town centres. 1958 Everyone's Encycl. (ed. 4) VIII. 577/1 The non-tabular deposits include the diamond-bearing ‘necks’ of old volcanoes. 1976 A. Rittmann & L. Rittmann Volcanoes 60/2 Necks, formed by magma solidifying within the conduit, have a cylindrical shape. 1993 Jrnl. Petrol. 34 194 Minettes and trachybasalts occur as lava flows, dykes, sills, and volcanic necks. < as lemmas |
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