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The Lava Creek Tuff is a voluminous sheet of ash-flow tuff located in Wyoming, Montana and Idaho, United States. It was created during the Lava Creek eruption around 630,000 years ago, which led to the formation of the Yellowstone Caldera. This eruption is considered the climactic event of Yellowstone's third volcanic cycle.
The Yellowstone Plateau Volcanic Field, also known as the Yellowstone Supervolcano or the Yellowstone Volcano, is a complex volcano, volcanic plateau and volcanic field located mostly in the western U.S. state of Wyoming, but it also stretches into Idaho and Montana. [4] [5] It is a popular site for tourists. [6] Map of Yellowstone Volcano ash beds
Farmer, G.L.; Broxton, D.E.; Warren, R.G.; Pickthorn, W. (1991). "Nd, Sr, and O isotopic variations in metaluminous ash-flow tuffs and related volcanic rocks at the Timber Mountains/Oasis Valley caldera complex, SW Nevada: implications for the origin and evolution of large-volume silicic magma bodies". Contributions to Mineralogy and Petrology.
By its characteristic chemical fingerprint and the distinctive size and shape of its crystals and glass shards, the volcano stands out among dozens of prominent ashfall horizons laid down in the Cretaceous, Paleogene, and Neogene periods of central North America. The event responsible for this fall of volcanic ash was identified as Bruneau ...
A single cooling unit of ash-flow tuff followed, covering about 2,700 km 2 (1,000 sq mi) with an estimated volume of 280 km 3 (67 cu mi). [51] The Mesa Falls ash bed (formerly "Pearlette type S") is the distal ash-fall of this eruption, found in Brainard and Hartington in Nebraska, and in the southern Rocky Mountains of Colorado. [49]
A volcanic eruption is one of the most powerful forces in nature, a seemingly unstoppable phenomenon that can have far-reaching impacts far beyond the area surrounding the volcano itself. When a ...
Highest point; Elevation: 11,927 ft (3,635 m) [1] Prominence: 962 ft (293 m) [1] Coordinates: 2]: Geography; Location: Park County, Wyoming, U.S.: Parent range: Absaroka Range: Topo map: USGS Sunlight Peak WY: Geology; Mountain type: Stratovolcano: Volcanic arc: Absaroka Range: Last eruption: Around 43 million years ago [3]: Climbing; First ascent: Unknown: Easiest route: Scramble class III ...
The geology of Wyoming includes some of the oldest Archean rocks in North America, overlain by thick marine and terrestrial sediments formed during the Paleozoic, Mesozoic and Cenozoic, including oil, gas and coal deposits. Throughout its geologic history, Wyoming has been uplifted several times during the formation of the Rocky Mountains ...