| Mesa Falls eruption | |
|---|---|
 Mesa Falls Tuff exposed at southern rim of both theIsland Park Caldera and theHenry's Fork Caldera nearAshton, Idaho. | |
| Volcano | Henry's Fork Caldera |
| Date | 1.3 million years ago |
| Type | Ultra-Plinian |
| Location | Idaho, United States 44°20′N111°20′W / 44.33°N 111.33°W /44.33; -111.33 |
| Volume | 280 km3 (67 cu mi) |
| VEI | 7 |
 Extent of the Mesa Falls ash bed | |
TheMesa Falls Tuff is atuff formation produced by the Mesa Falls eruption that formed theHenry's Fork Caldera that is located inIdaho west ofYellowstone National Park.[1] It is the second most recent caldera forming eruption from theYellowstone hotspot and ejected of 280 km3 (67 cu mi) of material. This eruption, 1.3 million yearsBP, was preceded by theHuckleberry Ridge Tuff and succeeded by theLava Creek Tuff, both of which were also formed by theYellowstone hotspot.[2]
State ofIdaho | |
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Boise (capital) | |
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 | This article about a specificstratigraphicformation in Wyoming is astub. You can help Wikipedia byexpanding it. |
