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On the West coast of North America, the coast ranges and the coastal plain form the margin. Most of the land is made of terranes that have been accreted onto the margin. In the north, the insular belt is an accreted terrane, forming the margin. This belt extends from the Wrangellia Terrane in Alaska to the Chilliwack group of Canada. [6]
Teraina (written also Teeraina, [1] also known as Washington Island – these two names are constitutional [2]) is a coral atoll in the central Pacific Ocean and part of the Northern Line Islands which belong to Kiribati. Obsolete names of Teraina are New Marquesas, Prospect Island, and New York Island.
The Puget Sound region is a coastal area of the Pacific Northwest in the U.S. state of Washington, including Puget Sound, the Puget Sound lowlands, and the surrounding region roughly west of the Cascade Range and east of the Olympic Mountains. It is characterized by a complex array of saltwater bays, islands, and peninsulas carved out by ...
USGS map colored by paleogeological areas and demarcating the sections of the U.S. physiographic regions: Laurentian Upland (area 1), Atlantic Plain (2-3), Appalachian Highlands (4-10), Interior Plains (11-13), Interior Highlands (14-15), Rocky Mountain System (16-19), Intermontane Plateaus (20-22), & Pacific Mountain System (23-25) The legend ...
The Pacific Northwest from outer space.. The Pacific Northwest (PNW; French: Nord-Ouest Pacifique), sometimes referred to as Cascadia, is a geographic region in Western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east.
Entire island preserved as Cutts Island State Park. Cypress Island: Skagit 6.23 10 7 3 Deadman Island Skagit 0 0 0 Deadman Island / Shark Reef San Juan 0.005 0 0 0 Debays Island Skagit 0 0 0 Decatur Island: San Juan 3.52 96 78 18 Deception Island Island 0 0 0 Destruction Island: Jefferson 0.05 0 0 0 Dinner Island: San Juan 0 0 0 Doe Island: San ...
A fault off the Pacific coast could devastate Washington, Oregon and Northern California with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.
Numerous seamounts lie off British Columbia's coast and are related to hotspot volcanism. The Bowie Seamount located 180 km (110 mi) west of Haida Gwaii is perhaps the shallowest seamount in Canada's Pacific waters. Because of its shallow depth, scientists believe it was an active volcanic island throughout the last ice age.