Anticosti Platform

geological feature, North America

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Last updated

June 18, 2026

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The Anticosti Platform is a geological feature located in the Gulf of Saint Lawrence, off the coast of Canada. It is a submerged portion of the southern periphery of the Canadian Shield. This platform is characterized by sedimentary rocks that are less than a mile thick, overlying older Precambrian crust. The Anticosti Platform, along with other platforms in the gulf, contributes to the varied underwater topography, which includes channels and shallower areas. These features, combined with fog and ice, have historically posed navigational hazards.12

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Gulf of Saint Lawrence
…three northern elongated platforms: the Anticosti Platform, near the island of the same name; another platform that skirts the low northern coast of the gulf; and finally, one lying between the Eskimo Channel and Newfoundland. The reefs on these surfaces, coupled with the hazards of fog and ice, have caused…
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…three northern elongated platforms: the Anticosti Platform, near the island of the same name; another platform that skirts the low northern coast of the gulf; and finally, one lying between the Eskimo Channel and Newfoundland. The reefs on these surfaces, coupled with the hazards of fog and ice, have caused…
Read More