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Map of Long Valley Caldera Early winter in Long Valley, 2017. Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain.The valley is one of the Earth's largest calderas, measuring about 20 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.
The north-northwest end of the Walker Lane is between Pyramid Lake in Nevada and California's Lassen Peak [1] [2] where the Honey Lake Fault Zone, the Warm Springs Valley Fault, and the Pyramid Lake Fault Zone [3] meet the transverse tectonic zone forming the southern boundary of the Modoc Plateau and Columbia Plateau provinces.
Many geological features in Western United States have a Northeastern orientation, the North American craton motion has the same orientation as well. [1] For example: the Trans-Challis fault zone, Idaho; the Snake River in Oregon; the Garlock Fault, California; the Colorado River in Utah; the Colorado Mineral Belt; Crater Flat-Reveille Range-Lunar Crater lineament, the Northwestern Nevada ...
The Long Valley Caldera was formed by a super-eruption about 760,000 years ago that blasted 140 cubic miles of magma, covering much of east-central California in hot ash that was blown as far away ...
The Long Valley Caldera in California is about 10 miles wide. And one of the most famous calderas in the world, at Yellowstone National Park, measures 30 miles by 45 miles, according to the U.S ...
Location Last eruption meters ... Long Valley Caldera: 3390: 11,122 ... Virgin Valley Caldera---16.38 million years ago Yucca Mountain: 2044: 6707
The system in the Long Valley Caldera is recharged primarily from snowmelt in the highlands around the western and southern rims of the caldera. The meltwater infiltrates to depths of a few kilometers (or miles), where some is heated to at least 430 °F (220 °C) by hot rock near the Inyo craters. The heated water, kept from boiling by high ...
A long-quiet yet massive super volcano, dubbed the "Long Valley Caldera," has the potential to unleash a fiery hell across the planet, and the magma-filled mountain has a history of doing so.