单词 | cauldron subsidence |
释义 | cauldron subsidence [`kȯl·drǝn sǝb`sī·dǝns] GEOLOGY 1. A structure formed by the lowering along a steep ring fracture of a more or less cylindrical block, usually 1 to 10 miles (1.6 to 16 kilometers) in diameter, into a magma chamber. 2. The process of forming such a structure. |
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