a stray mass of rock, foreign to the surrounding strata, that has been transported from its original site, apparently by glacial action.
| 单词 | θ4961 |
| 释义 | the world > the earth > structure of the earth > structural features > mass > [noun] > of rock > stray mass (3) erratic blocka1828 a stray mass of rock, foreign to the surrounding strata, that has been transported from its original site, apparently by glacial action. erratic1849 Geology. An erratic block. floating reef1869 (see quot.). |
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