单词 | suevite |
释义 | sueviten. Geology. A type of breccia associated with impact craters, consisting of a welded mass (welded adj. 3a) of debris fragments resembling volcanic tuff but showing signs of alteration by mechanical and thermal shock; (originally) such rock from the Ries crater near Nördlingen in Germany. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > composite rock > [noun] > breccia > specific bone breccia1829 fault breccia1891 ferricrete1902 microbreccia1926 suevite1936 1936 Geogr. Jrnl. 87 59 In appearance the trass or Suevite of the Ries very closely resembles the Buonim agglomerate; both are highly vesicular and of acid composition, liparitic or dacitic. 1970 New Scientist 23 July 174/3 The so-called ‘suevite’ rocks of the Ries are almost identical to some of the surface samples from the fragmented lunar ‘regolith’. 2003 V. L. Masaitis in C. Koeberl & F. Martínez-Ruiz Impact Markers Stratigr. Rec. 155 These suevites contain small bodies of impact melt rocks. This entry has been updated (OED Third Edition, September 2021; most recently modified version published online March 2022). < n.1936 |
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