Lava Creek Tuff

Lava Creek Tuff
Lava Creek Tuff
	Tuff Cliff showing the Lava Creek Tuff formation
Volcano	Yellowstone Caldera
Date	Around 630,000 years ago
Type	Ultra-Plinian
Location	Wyoming, United States; 44°24′N 110°42′W / 44.400°N 110.700°WCoordinates: 44°24′N 110°42′W / 44.400°N 110.700°W
VEI	8
	Extent of the Lava Creek ash bed

The Lava Creek Tuff is a tuff formation in Wyoming, Montana and Idaho, United States, created during the Lava Creek eruption around 630,000 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 1,000 km³ (240 cu mi) 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]

References[]

^ Matthews, Naomi E.; Vázquez, Jorge A.; Calvert, Andrew T. (2015). "Age of the Lava Creek supereruption and magma chamber assembly at Yellowstone based on ⁴⁰Ar/³⁹Ar and U–Pb dating of sanidine and zircon crystals". Geochemistry, Geophysics, Geosystems. 16 (8): 2508–2528. Bibcode:2015GGG....16.2508M. doi:10.1002/2015GC005881.
^ Lisa Morgan (February 10, 2004). "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". Yellowstone Science Talks. Archived from the original on 2004-05-01. Retrieved September 16, 2005.
^ "U.S. Geological Survey Scientific Investigations Map 2816" (PDF). Retrieved May 20, 2018.

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[AGUage-1] Matthews, Naomi E.; Vázquez, Jorge A.; Calvert, Andrew T. (2015). "Age of the Lava Creek supereruption and magma chamber assembly at Yellowstone based on ⁴⁰Ar/³⁹Ar and U–Pb dating of sanidine and zircon crystals". Geochemistry, Geophysics, Geosystems. 16 (8): 2508–2528. Bibcode:2015GGG....16.2508M. doi:10.1002/2015GC005881.

[ash-2] Lisa Morgan (February 10, 2004). "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". Yellowstone Science Talks. Archived from the original on 2004-05-01. Retrieved September 16, 2005.

[properties-3] "U.S. Geological Survey Scientific Investigations Map 2816" (PDF). Retrieved May 20, 2018.

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[2]

[3]

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Lava Creek Tuff

See also[]

References[]