Lava Creek Tuff
The Lava Creek Tuff is a tuff formation in Wyoming, created during the Lava Creek eruption around 640,000 years ago, which formed the Yellowstone Caldera. [1]
The Lava Creek Tuff is distributed in a radial pattern around the caldera and is formed of 1000 km3 (240 mi3) of ignimbrites.[2]
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 locales. Rock texture of the tuff ranges from fine-grained to aphanitic and is densely welded. The maximum thickness of the tuff layer is approximately 180–200 m (590–660 ft).[3]
See also
References
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