The Glacier Bay region's extreme topography reveals that it is a landscape driven by immense energies. This is a result of the area's position astride the active collision zone between the North American and Pacific plates. This major plate boundary, the Fairweather-Queen Charlotte Fault system cuts across Glacier Bay's western edge. For over 50 million years, the Pacific Plate and Yakutat Microplate have been moving northwest along this fault boundary and plowing obliquely into the North American Plate at about the speed your fingernails grow, or about 50 millimeters per year.
[{"glaciers": "n/a", "shrinking": "n/a", "heights": "n/a"}]
[{"glaciers": "n/a", "shrinking": "n/a", "heights": "n/a"}] [{"glaciers": "Glacier Bay", "shrinking": "n/a", "heights": "n/a"}]