| 释义 |
Euramerica, n. Geol.|ˌjʊərəˈmɛrɪkə|
[f. Eur(ope (see European a. and n.) + America (see American a. and n.); cf. Eurasia.]
A vast continental area or supercontinent thought to have existed in the northern hemisphere and to have broken up in the later Mesozoic, forming parts of Europe and North America. Also, these land masses collectively as they exist today.
1972Scottish Jrnl. Geol. VIII. 188 Palaeomagnetic investigations by Briden..show that the pre-Carboniferous poles follow, when traced back in time, three different wandering paths signifying the existence of three separate continents: Gondwanaland, ‘Euramerica’ (North America plus Europe to the Urals) and ‘Angara’ (the East Siberian Platform), which came together to form Pangaea. 1974Jrnl. Biogeogr. I. 77/1 Though Devonian fish are still known in greater numbers and variety in Euramerica than anywhere else, they are also known from Siberia, China and Gondwanaland. 1977A. Hallam Planet Earth 211 The desert environment of Euramerica and northern Gondwanaland persisted throughout the Permian but shifted south with the Equator. |