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Laurasia
Laur·a·sia L0069650 (lô-rā′zhə)n. The supercontinent of the Northern Hemisphere that, according to the theory of plate tectonics, broke up into North America, Greenland, Europe, and Asia except for the Indian subcontinent.
[New Latin Laur(entia), geologic precursor of North America (after the Saint Lawrence River) + (Eur)asia.]Laurasia (lɔːˈreɪʃə) n (Placename) one of the two ancient supercontinents produced by the first split of the even larger supercontinent Pangaea about 200 million years ago, comprising what are now North America, Greenland, Europe, and Asia (excluding India). See also Gondwanaland, Pangaea[C20: from New Latin Laur(entia) (referring to the ancient N American landmass, from Laurentian strata of the Canadian Shield) + (Eur)asia]Laur•a•sia (lɔˈreɪ ʒə, -ʃə)
n. a hypothetical landmass in the Northern Hemisphere that separated near the end of the Paleozoic Era to form North America and Eurasia. [< German (1928), b. Laurentia the forerunner of the North American continent (see Laurentian) and Eurasia] Laur·a·sia (lô-rā′zhə) A supercontinent of the Northern Hemisphere made up of the landmasses that currently correspond to North America, Greenland, Europe, and Asia (except India). According to the theory of plate tectonics, Laurasia formed at the end of the Precambrian Eon and broke up in the middle of the Mesozoic Era. Compare Gondwanaland.Thesaurus| Noun | 1. | Laurasia - a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asianorthern hemisphere - the hemisphere that is to the north of the equator |
Laurasia
Laurasia (lôrāzh`ə): see continental driftcontinental drift,
geological theory that the relative positions of the continents on the earth's surface have changed considerably through geologic time. Though first proposed by American geologist Frank Bursley Taylor in a lecture in 1908, the first detailed theory of
..... Click the link for more information. .Laurasia (from “Laurentian Shield,” the former name of the Canadian Shield, and “Asia”), the ancient continent that included the North American, Eastern European, and Siberian platforms, and possibly the Chinese-Korean and South Chinese platforms as well as the Caledonian and Hercynian folded structures located between them. The unification of the North American and Eastern European platforms into a single land mass occurred at the beginning of the Devonian across the area now occupied by the northern part of the Atlantic Ocean. The other parts of Laurasia became joined together by the end of the Paleozoic. The breakup of Laurasia and the formation of the basin of the North Atlantic began in the middle of the Mesozoic. Laurasia[lȯ′rā·zhə] (geology) A continent theorized to have existed in the Northern Hemisphere; supposedly it broke up to form the present northern continents about the end of the Pennsylvanian period. Laurasia one of the two ancient supercontinents produced by the first split of the even larger supercontinent Pangaea about 200 million years ago, comprising what are now North America, Greenland, Europe, and Asia (excluding India) Laurasia
Laurasia the northern supercontinent of the MESOZOIC ERA, including North America, Greenland and Eurasia. PANGAEA gave rise to Laurasia and in the south GONDWANALAND. see CONTINENTAL DRIFT.Laurasia
Related to Laurasia: PanthalassaWords related to Laurasianoun a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and AsiaRelated Words |