Laurasia


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Related to Laurasia: Panthalassa

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
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.

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)
References in periodicals archive ?
Roughly 120 million years ago, all of the landmasses were joined together into two giant continents--Gondwana in the southern hemisphere and Laurasia in the northern hemisphere.
They suggested that the features were initially formed as a result of northwest-oriented wrench zones located close to the initial Gondwana and Laurasia collision front in the late Paleozoic.
Jack Mattingly of Woodland Hills said although he doesn't ride, he's glad his daughter, Laurasia, decided to pursue the sport.
Prior to this, he was President of Laurasia Resources Limited, an oil and gas company.
The vast continent of Pangaea had started to break up, with the narrow Tethys Ocean beginning to divide it into two landmasses - Laurasia to the north and Gondwana to the south.
Laurasia Resources Limited announces its results for the first six months of 1997.
Laurasia Resources Limited (LUR - TSE) announces that The Toronto Stock Exchange has accepted notice of its intention to make a normal course issuer bid.
Some lineages came from ancient connections to the Boreotropics once located in southern Laurasia, while others originated in the Southern Hemisphere's portions of Gondwana (Lavin & Luckow, 1993; Chanderbali et al.
Laurasia Resources Limited (TSE:LUR) announced today its results for the first quarter of 1997.
TORONTO--(BUSINESS WIRE)--April 24, 1997-- Laurasia Resources L (TSE: LUR.
Laurasia Resources Limited (LUR-T) announces that its Board of Directors has approved a capital expenditure budget of $5,000,000 for the first 6 months of 1997.