Mono Lake Volcanic Field

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The Mono Lake volcanic field, east of Yosemite National Park and north of the Mono Craters, consists of vents within Mono Lake and on its north shore. The most recent eruptive activity in the Long Valley to Mono Lake region took place about 300 years ago, when lake-bottom sediments forming much of Paoha Island were uplifted by intrusion of a rhyolitic cryptodome.


Summary

The most topographically prominent feature of Mono Lake volcanic field is Black Point, which rises above the northwest shore. It was formed as a sublacustral (below lake level) basaltic cone about 13,300 years ago when the water level at Mono Lake was higher. Lava domes and flows form Negit and parts of Paoha islands within Mono Lake. The most recent eruptive activity in the Long Valley to Mono Lake region took place about 300 years ago, when lake-bottom sediments forming much of Paoha Island were uplifted by intrusion of a rhyolitic cryptodome. Spectacular tufa towers line the shores of Mono Lake.

News

Date published: April 20, 2021

New survey plumbs Mono Lake's depths for hydrothermal heat

It is very hot below the cold waters of Mono Lake, which hosts one of the youngest volcano complexes in the United States.

Date published: May 13, 2020

Unpacking CalVO's new seismic monitoring boxes

If you've noticed any changes to the earthquake counts released in CalVO's weekly updates, don't worry - some behind-the-scenes improvements to our monitoring system have been implemented which allow us to focus on unrest specifically related to our volcanoes and volcanic regions.

Date published: November 4, 2015

3D Images of Magma Below Mono Craters Area

USGS CalVO scientists have developed a new 3D conceptual model of the magma system below Mono Lake and Mono Craters in eastern California to give scientists a more detailed understanding of volcanic processes at depth.

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