The Menevian formation.
| 单词 | θ5402 |
| 释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > others (4) Menevian1871 The Menevian formation. Gondwana1873 Hence as quasi-adj.: of, pertaining to, or characteristic of the Gondwana systems or the period during which they were formed. See also Gondwanaland… Purbeckian1874 A stage in the British Upper Jurassic and Lower Cretaceous, above the Portlandian and below the Wealden, represented by prominent strata at Purbeck. Ozarkian1909 Geology. A system formerly regarded as intervening between the Late Cambrian and the Early Ordovician of North America. Now historical. |
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