An upward slope or direction, esp. (Mining) of strata, coal seams, veins of ore, etc.
| 单词 | θ4733 |
| 释义 | the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > position or direction of strata > slope (7) rise1672 An upward slope or direction, esp. (Mining) of strata, coal seams, veins of ore, etc. upgo1672 An ascent; spec. a rise in a stratum of rock. pitch1719 Mining and Geology. The inclination of a vein of ore or seam of coal from the horizontal; the dip or rise of a stratum, bed, etc.; spec. (a) the… slough1838 (See quots.) bajada1866 In the south-west of North America, a descent or slope; spec. that section of a piedmont slope formed by aggradation and composed of rock debris… pitching1903 Mining. = pitch, n.2 1b. Cf. rare. Subcategories:— upper termination of an inclined stratum (1) |
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