Laurentian definition

lô-rĕnshən
Of, relating to, or being in the vicinity of the St. Lawrence River.
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(geology) Of or relating to the Precambrian gneissic granite of the Lake Superior area.
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Designating or of a series of rocks of the Precambrian system in E Canada.
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Of or relating to the St. Lawrence River.
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Origin of laurentian

  • From Latin Laurentius Lawrence

    From American Heritage Dictionary of the English Language, 5th Edition

Laurentian Sentence Examples

  • The Sea of Japan has a wide shelf only in the north, the central part forms a broad basin with depths of 1650 fathoms. The Laurentian Sea (Gulf of St Lawrence) has a narrow branching gully running between wide shelves, in which a depth of 312 fathoms is found south of Anticosti.

  • This is a very ancient mountain mass of crystalline rocks resembling more the Laurentian mountains of Canada than the Appalachians.

  • Laurentian gneiss forms the greatest mass of the exposed rocks of the country bare of ice.

  • Giuliano became de facto head of the government, but he did not pursue the usual vindictive policy of his house, although he resorted to the Laurentian method of amusing the citizens with splendid festivities.

  • Such veins often attain a thickness of several feet, and sometimes possess a columnar structure perpendicular to the enclosing walls; they are met with in the crystalline limestones and other Laurentian rocks of New York and Canada, in the gneisses of the Austrian Alps and the granulites of Ceylon.

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