| 单词 | shatter cone |
| 释义 | > as lemmasshatter cone shatter cone n. Geology a fluted conical structure produced in rock by intense mechanical shock, esp. by that associated with meteoritic impact. ΘΚΠ the world > the earth > structure of the earth > structural features > rock formations > [noun] > cone or cone-in-cone cone-in-cone1877 cone-sheet1924 shatter cone1933 1933 W. H. Bucher in Rep. 16th Internat. Geol. Congr. 1070 In the same vicinity more convincing evidence of the action of an explosive force is seen in the local development of ‘shatter cones’, innumerable incipient cracks traversing beds of rather coarsely crystalline dolomite in the shape of interpenetrating cones, not unlike cone-in-cone. 1979 Sci. Amer. Mar. 43/3 Macroscopic evidence includes ‘shatter cones’, structures of quartzite that flare outward and downward, away from the direction of impact. < as lemmas |
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