Rating | Solver | Clue |
---|---|---|
SEAMS | Coal strata | |
CLUMP | The compressed clay of coal strata. | |
MEASURE | Beds or strata; as, coal measures; lead measures. | |
WANT | A depression in coal strata, hollowed out before the subsequent deposition took place. | |
SEAM | A thin layer or stratum; a narrow vein between two thicker strata; as, a seam of coal. | |
FAULT | To interrupt the continuity of (rock strata) by displacement along a plane of fracture; -- chiefly used in the p. p.; as, the coal beds are badly faulted. | |
BASIN | ...rly where the strata dip inward, on all sides, toward a center; -- especially applied to the coal formations, called coal basins or coal fields.... | |
LARAMIE GROUP | ...t contains beds of lignite, often valuable for coal, and is hence also called the lignitic group. See Chart of Geology. ... |