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. |
Last updated: September 17, 2024