The potential for damaging earthquakes, landslides, floods, tsunamis, and wildfires is widely recognized in California. The same cannot be said for volcanic eruptions, despite the fact that they occur in the state about as frequently as the largest earthquakes on the San Andreas Fault. At least ten eruptions have taken place in the past 1,000 years, and future volcanic eruptions are inevitable.The
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.
Location: California, Mono County
Latitude: 38° N
Longitude: 119.03° W
Elevation: 2,121 (m) 6,959 (f)
Volcano type: volcanic field
Composition: basalt to rhyolite
Most recent eruption: 300 years ago
Nearby towns: Lee Vining
Threat Potential: Moderate*
*based on the National Volcano Early Warning System
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 from 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 the intrusion of a rhyolitic crypto dome. Spectacular tufa towers line the shores of Mono Lake.