Insular Mountains

Insular Mountains

Insular Mountains

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Description:
The Insular Mountains are a range of mountains in the Pacific Coast Ranges on the coast of British Columbia, Canada, comprising the Vancouver Island Ranges and Queen Charlotte Mountains. The Insular Mountains are rugged, particularly on Vancouver Island where peaks in Strathcona Provincial Park rise to elevations of more than 2000m (6,600 ft). The highest of these mountains is Golden Hinde on Vancouver Island, which rises to .

Although the Coast Mountain Range is usually referred to as the westernmost range of the Pacific Cordillera (since it is the westernmost range on the main landmass at that point), the Insular Mountains are the true westernmost range.

Geological history

These Insular Mountains are not yet fully emerged above sea level, and Vancouver Island and the Haida Gwaii are just the higher elevations of the range, which was in fact fully exposed during the last ice age when the continental shelf in this area was a broad coastal plain.

The Insular Mountains formed when a chain of active volcanic islands (the Insular Islands) collided against the North American continent during the Mid-Cretaceous time. The type of rocks that form the Insular Mountains are turbidites and pillow lavas. Granitic plutons seldom occur in the Insular Mountains, unlike the Coast Mountains. The Insular Mountain range covers some 133,879 kmĀ² (51,691 sq mi). It...
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