| 单词 | cretaceous series |
| 释义 | > as lemmascretaceous series 2. Geology. Belonging to or found in the Chalk formation. So cretaceous group, cretaceous series, cretaceous system. cretaceous period: the period during which these strata were deposited. ΘΚΠ the world > the earth > structure of the earth > age or period > [adjective] > secondary or Mesozoic > Cretaceous cretaceous1831 the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > secondary or Mesozoic > Cretaceous cretaceous1831 Cretacean1846 1831 H. T. De la Beche Geol. Man. v. 299 The cretaceous rocks of south-eastern England. 1854 F. C. Bakewell Geol. 56 The chalk and its associated sands have been termed the ‘cretaceous system’. 1863 C. Lyell Geol. Evid. Antiq. Man 335 During the oolitic and cretaceous periods. < as lemmas |
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