Yellowstone Caldera, enormous crater in the western-central portion of Yellowstone National Park, northwestern Wyoming, that was formed by a cataclysmic volcanic eruption some 640,000 years ago. It measures approximately 30 by 45 miles (50 by 70 km), covering a large area of the park. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.
More than 70 smaller swarms were detected between 1983 and 2008.
YELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE U.S. Geological Survey Tuesday, September 1, 2020, 10:28 AM MDT (Tuesday, September 1, 2020, 16:28 UTC).
The caldera formed during the last of three supereruptions over the past 2.1 million years: the Huckleberry Ridge eruption 2.1 million years ago (which created the Volcanism at Yellowstone is relatively recent, with calderas that were created during large eruptions that took place 2.1 million, 1.3 million, and 630,000 years ago. Get kids back-to-school ready with Expedition: Learn! YELLOWSTONE VOLCANO (VNUM #325010) 44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m) Current Volcano Alert Level: NORMAL Current Aviation Color Code: GREEN Recent work and news YVO wishes everyone …
Contrary to some media reports, Yellowstone is not 'overdue' for a supereruption.Other media reports were more hyperbolic in their coverage.Studies and analysis may indicate that the greater hazard comes from hydrothermal activity which occurs independently of volcanic activity.
West Thumb is a caldera within a caldera.
The calderas lie over the Over the past 18 million years or so, this hotspot has generated a succession of violent eruptions and less violent The oldest identified caldera remnant straddles the border near The volcanic eruptions, as well as the continuing geothermal activity, are a result of a great cove of magma located below the caldera's surface. If the expansion results in further relief of pressure, for example, by blowing crust material off the top of the chamber, the result is a very large gas explosion.
Most are relatively minor, measuring a magnitude of 3 or weaker. In 1985, more than 3,000 earthquakes were measured over a period of several months. It also has 4,000 kmThe source of the Yellowstone hotspot is controversial.
Over 20 large craters have been produced in the past 14,000 years, resulting in such features as Mary Bay, In a 2003 report, USGS researchers proposed that an earthquake may have displaced more than 77 million cubic feet (2,200,000 mFurther research shows that very distant earthquakes reach and have effects upon the activities at Yellowstone, such as the 1992 7.3 magnitude In 2016, the USGS announced plans to map the subterranean systems responsible for feeding the area's hydrothermal activity.
Ken Pletcher was Senior Editor, Geography and History for Encyclopædia Britannica. The 3,472-square-milepark encompassing the caldera is filled with geologic wonderlands of sprouting geysers and effervescing pools,all ultimatelydriven by magma and …
This can cause a chain reaction.
The USGS states these swarms are likely caus…
Volcanic and tectonic actions in the region cause between 1,000 and 2,000 measurable earthquakes annually. According to analysis of earthquake data in 2013, the magma chamber is 80 km (50 mi) long and 20 km (12 mi) wide.
It impacted nearly 8,900 square-miles and occurred 8.72 million years ago. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. If the pressure is released to a sufficient degree by some geological shift, then some of the gases bubble out and cause the magma to expand. Magma brewing deep under the Earth’s surface produces heat and volcanic gases that power the park’s famous hot springs, geysers and fumaroles.
The chamber is mostly solid, with only about 5-15% melt. Some geoscientists hypothesize that the Yellowstone hotspot is the effect of an interaction between local conditions in the Volcanic and tectonic actions in the region cause between 1,000 and 2,000 measurable In December 2008, continuing into January 2009, more than 500 quakes were detected under the northwest end of Yellowstone Lake over a seven-day span, with the largest registering a magnitude of 3.9.The last supereruption of the Yellowstone Caldera, the Lava Creek eruption (approximately 640,000 years ago),Geologists are closely monitoring the rise and fall of the The upward movement of the Yellowstone caldera floor between 2004 and 2008—almost 3 inches (7.6 cm) each year—was more than three times greater than ever observed since such measurements began in 1923.Although fascinating, the new findings do not imply increased geologic hazards at Yellowstone, and certainly do not increase the chances of a 'supereruption' in the near future.
Yellowstone is underlain by two magma bodies. History at your fingertips
in Japanese studies from the University of Illinois at Urbana-Champaign. Our editors will review what you’ve submitted and determine whether to revise the article. Yellowstone National Park sits in the northwest region of Wyoming and is home to bursting geysers, steam vents and bubbling pools.
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