More fully pennant grit. Any of a series of grit and sandstone strata lying between the upper and lower coal measures in South Wales and the…
| 单词 | θ6291 |
| 释义 | the world > the earth > minerals > mineral deposits > features of stratum or vein > [noun] > material between > between coal (5) pennant1669 More fully pennant grit. Any of a series of grit and sandstone strata lying between the upper and lower coal measures in South Wales and the… table-bat1712 a distinctive stratum of bat (bat, n.2 11) in a coal mine. bind1799 Indurated clay, occurring between coal-strata. seral1858 Used by H. D. Rogers to designate the Millstone Grit formation of the Pennsylvanian Coal-measures. Also as n.: this formation. bony1874 Slaty or shaly material embedded in coal seams; coal containing such material; = bone, n.1 12. Also: mining waste, slag. |
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