= red beds n.
单词 | θ5386 |
释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Triassic-Jurassic (4) red measures1803 = red beds n. red beds1811 any of various groups of sedimentary strata of a reddish colour; spec. (often in form Red Beds) strata composed largely of sandstone, siltstone, or… Rhaetic1862 Geology. = Rhaetian, n. 3. Also (chiefly in plural): rocks or strata of the Rhaetian stage (now rare). Rhaetian1883 Geology. The uppermost (youngest) of the three stages constituting the Upper Triassic, lying above the Norian stage and below the Hettangian… |
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