Lava Creek Tuff, Volcanic rock formation in Yellowstone National Park, US
The Lava Creek Tuff formation extends across Wyoming, Montana, and Idaho, displaying layers of consolidated volcanic ash in varying shades of gray and red.
The formation emerged from a massive volcanic eruption approximately 640,000 years ago, which released 1,000 cubic kilometers of material and formed the Yellowstone caldera.
Scientists examine the Lava Creek Tuff deposits to understand the geological processes that shaped North America through radiometric dating and mineral composition analysis.
Visitors can observe the exposed volcanic deposits at Tuff Cliff along the Gibbon River, where the formation reaches heights of up to 200 meters.
The Lava Creek Tuff contains distinct mineral compositions in different layers, including quartz, sanidine, and hornblende, revealing multiple phases of volcanic activity.
Location: Idaho
Location: Wyoming
Location: Montana
Made from material: tuff
Part of: Yellowstone Group
GPS coordinates: 44.40000,-110.70000
Latest update: May 27, 2025 06:50
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