单词 | pillow structure |
释义 | > as lemmaspillow structure pillow structure n. Geology a rock structure in which numerous closely fitting pillows (sense 7) are fused together. ΘΚΠ the world > the earth > structure of the earth > structural features > volcanic formations > [noun] > lava formations > others pahoehoe1825 malpais1844 spatter rampart1856 ring wall1858 aa1859 pedregal1881 pillow structure1897 pillow1899 pillow lava1903 block lava1914 ring dyke1915 louderback1930 1897 A. Geikie Anc. Volcanoes Brit. I. xiv. 244 Some of the diabase-masses display the pillow-structure and amygdaloidal texture. 1930 B. N. Peach & J. Horne Chapters Geol. Scotl. 142 Pillow-structure is well developed in some of the volcanic rocks, the chilled margins of the pillows and the concentric arrangement of the vesicles being marked features. 1990 P. Kearey & F. J. Vine Global Tectonics xi. 254 A lower group of komatiitic ultramafic and mafic volcanic rocks with pillow structures..have a bulk composition similar to ocean ridge basalts. < as lemmas |
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