The Restless Northwest: A Geological Story

The Restless Northwest provides a brief, easy-to-follow overview of the geologic processes that shaped the Northwest.

One of the attractions of the Northwest is its varied terrain, from the volcanic Cascade Range to the flood-scoured scablands of eastern Washington and the eroded peaks of the northern Rockies. These vast differences are the result of a collision of the old and the new. The western edge of Idaho was once the edge of ancient North America; as eons passed, a jumble of islands, ...