What are some facts about the "Western Cordillera" in Canada?

Question

What are some facts about the "Western Cordillera" in Canada?

Answer 1

The North American Cordillera began as an island arc of volcanic origin. At the same time the western edge of the Canadian Shield was the western coast of what we now know as North America. Over time the cordillera grew and the area between it and the Canadian Shield became lowlands and this area is now known as the Western Sedimentary Basin. This basin extends from the Gulf of Mexico to the Arctic Ocean. At various times throughout prehistory this area has been both above and below sea level and, consequently, experienced periods of erosion, and sedimentary deposition.

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Answer 2

The Cordilleran region comprises a series of mountain belts some 500 miles (800 km) wide along Canada's Pacific coast. The great heights and angularity of the peaks, many of which rise to more than 10,000 feet (3,000 metres), indicate that these are much younger mountains than the Appalachians. Signs of alpine glaciation are widely evident. In many places valley glaciers remain active, and snowcapped peaks are frequently hidden in the clouds. Some of the mountain slopes are so precipitous that they are bare of trees. Viewed from above, the entire landscape seems to be an irregular sea of mountain ranges, trending in a north-south direction.