Lava Creek Tuff

Lava Creek Tuff

Lava Creek Tuff is a tuff formation created when the Yellowstone Caldera erupted about 640,000 years ago.ref|age

The Lava Creek Tuff distributed in a radial pattern around the caldera and is formed of convert|1000|km3|cumi|abbr=off|lk=off of ash in pyroclastic flows.ref|ash

The tuff has been exposed by erosion at Tuff Cliff along the Gibbon River.ref|exposed

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 convert|180|-|200|m|ft|abbr=on|lk=off.ref|properties

References

# cite web | title=Undine Falls, Lava Creek, Yellowstone National Park | work=Yellowstone Volcano Observatory | url=http://volcanoes.usgs.gov/yvo/images/20010519-082_caption.html | accessdate=2005-09-16
# cite web | author=Lisa Morgan | title=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 | work=Yellowstone Science Talks | url=http://www.nps.gov/yell/nature/sciencetalks/transcriptmorgan1.htm | accessdate=September 16 | accessyear=2005
# cite web | title=Volcano Hazards Fact Sheet: Yellowstone: Restless Volcanic Giant | work=Cascades Volcano Observatory | url=http://vulcan.wr.usgs.gov/Volcanoes/Yellowstone/OFR95-59/OFR95-59_inlined.html | accessdate=2005-09-16
# cite web | title=U.S. Geological Survey Scientific Investigations Map 2816 | url=http://permanent.access.gpo.gov/websites/pubsusgsgovproducts/pubs.usgs.gov/sim/2004/2816/2816_508.pdf | accessdate=September 16 | accessyear=2005


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