Mesa Falls Tuff

The Mesa Falls Tuff is a tuff formation created by the Mesa Falls eruption that formed the Henry's Fork Caldera that is located in Idaho west of Yellowstone National Park.[1] It is the second most recent caldera forming eruption from the Yellowstone hotspot and ejected of 280 km³ (67 cu mi) of material. This eruption, 1.3 million years BP, was preceded by the Huckleberry Ridge Tuff and succeeded by the Lava Creek Tuff both of which were created by the Yellowstone hotspot.[2]

Mesa Falls eruption
Mesa Falls Tuff exposed at southern rim of both the Island Park Caldera and the Henry's Fork Caldera near Ashton, Idaho.
Volcano	Henry's Fork Caldera
Date	1.3 million years ago
Type	Ultra-Plinian
Location	Idaho, United States 44.33°N 111.33°W
VEI	7
Extent of the Mesa Falls ash bed

See also

• Yellowstone Caldera
• Snake River Plain
• Island Park, Idaho
• Upper Mesa Falls
• Lower Mesa Falls

References

1. Christiansen, R.L., 2001, The Quaternary and Pliocene Yellowstone Plateau Volcanic Field of Wyoming, Idaho, and Montana: U.S. Geological Survey Professional Paper 729-G, 145 p.
2. Yellowstone Caldera, Wyoming