Geology

Hikers at Cutbank Pass.

NPS photo.

The rocks that make up Glacier tell stories of the Earth's history.

The towering mountains and U-shaped valleys within Glacier National Park were formed over 1.4 billion years by several geologic processes–including erosion, sediment deposition, uplift, faulting, and glaciation.

 

Geologic Formations

Glacier's sedimentary rocks represent an era of Earth's history.

Geologic Activity

These mountains are a place of constant change.

Fossils

Learn what Glacier and the Bahamas have in common.

Mountains

Glacier's rugged peaks tell a story of pressure, folding, uplift, and erosion.

Overview of the Park's Glaciers

Explore the most frequently asked questions about Glacier National Park's glaciers.