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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.
[8]: 289 This magma chamber is separate from the magma chamber under Long Valley Caldera. [21] The recent eruptions of the Mono Craters have been similar in volume and nearly identical in composition ("crystal-poor high-silica rhyolite") to those of Glass Mountain that preceded the Long Valley Caldera-forming eruption. [10]
After the Long Valley Caldera eruption 760,000 years ago, ... Aerial view of Mono Lake in May 2019, with generous snow pack promising a good summer for the lake.
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 ...
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.
Mammoth Mountain is a lava dome complex in Mono County, California.It lies in the southwestern corner of the Long Valley Caldera [6] and consists of about 12 rhyodacite and dacite overlapping domes. [7]
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 ...
In 2012, the Long Valley Observatory was integrated into the new California Volcano Observatory based in Menlo Park, California which covers the entire states of California and Nevada, this includes the southern Cascade Range volcanoes in the state of California which were previously under the jurisdiction of the Cascades Volcano Observatory.
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