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单词 pillow structure
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pillow structure
pillow structure n. Geology a rock structure in which numerous closely fitting pillows (sense 7) are fused together.
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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.
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