How are the Boundary Ranges related to the Coast Mountains of Canada?

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The Boundary Ranges are a northward continuation of the Coast Mountains of Canada. Located along the border between Alaska and British Columbia, the Boundary Ranges serve as a vital link that connects the Canadian Coast Mountains to the southeast with the St. Elias Mountains to the northwest.1

Together, these mountains form part of the Pacific mountain system, which extends southward through the western United States. The Boundary Ranges are characterized by their massive granitic composition—part of the Coast Range Batholith—and extensive ice fields, such as the Juneau and Stikine, which feed numerous valley glaciers.1