单词 | slump ball |
释义 | slump ball [`slǝmp ´bȯl] GEOLOGY A relatively flattened mass of sandstone resembling a large concretion, measuring from 0.8 inch to 10 feet (2 centimeters to 3 meters) across, commonly thinly laminated with internal contortions and a smooth or lumpy external form, and formed by subaqueous slumping. |
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