Lava Creek Tuff
is a tuff
formation created when the Yellowstone Caldera
erupted about 640,000 years ago.
The Lava Creek Tuff distributed in a radial pattern around the caldera and is formed of of ash in pyroclastic flows.
The tuff has been exposed by erosion at Tuff Cliff along the Gibbon River.
Lava Creek Tuff ranges in color from light-gray to pale red in some locals. Density of the tuff ranges from fine-grained to aphanitic and is densely welded. Thickness of the tuff layer ranges from .
- Undine Falls, Lava Creek, Yellowstone National Park. Yellowstone Volcano Observatory. Retrieved on 2005-09-16..
- Lisa Morgan Yellowstone Lake Geology Talk Transcript - The floor of Yellowstone Lake is anything but quiet: Volcanic and hydrothermal processes in a large lake above a magma chamber, February 10, 2004. Yellowstone Science Talks. Retrieved on September 16., 2005.
- Volcano Hazards Fact Sheet: Yellowstone: Restless Volcanic Giant. Cascades Volcano Observatory. Retrieved on 2005-09-16..
- U.S. Geological Survey Scientific Investigations Map 2816. Retrieved on September 16., 2005.