Name for a kind of red shale; also attributive. symon fault n. an interruption of a seam of coal by shale or other material (see quots.).
| 单词 | θ6339 |
| 释义 | the world > the earth > minerals > mineral deposits > [noun] > stratum or bed > of coal > part of coal seam (5) symon fault1834 Name for a kind of red shale; also attributive. symon fault n. an interruption of a seam of coal by shale or other material (see quots.). swilly1836 A detached portion of a coal-seam; also, a local thickening of a coal-seam: = swelly, n. split1877 Mining. (See quot. 1881.) underply1883 (See quot. 1883.) wall-coal1886 (see quot.). |
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