British regional. An earthy, gritty, or coarsely textured rock. Cf. roche, n.1 5.
| 单词 | θ5381 |
| 释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > primary or Palaeozoic > Permian > specific (3) roach1798 British regional. An earthy, gritty, or coarsely textured rock. Cf. roche, n.1 5. Zechstein1798 Limestone of the Upper Permian period forming strata underlying parts of northern Germany, Poland, and north-eastern England; the series of… magnesian limestone1799 Chiefly Geology. a limestone containing magnesium salts; spec. (also with capital initials) a stratigraphic division of the Permian system in… |
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