The Mono-Inyo Craters are a 29-km (18 mi) long chain of
silicic lava domes, lava flows, and explosion craters found along the eastern side of the Sierra Nevada range between Mono Lake and
Long Valley Caldera. Mono Craters comprise the northern portion of the chain and form an arcuate, 17-km (10.5 km) long group of 30 or more
dike-fed eruption centers. Explosive eruptions at Mono Craters began more than 50,000 years ago from now-buried
vents, but almost all of the exposed
domes and flows are of
Holocene age. The Inyo Craters are a 12-km (7.5 mi) long chain of volcanic features similar to the northern-lying Mono Craters. The latest eruptions at Mono-Inyo Craters took place about 600 years ago when
explosive eruptions and
lava flows produced
tephra deposits and
obsidian lava domes. Eruptions on Paoha Island, the northern tip of the chain also known as
Mono Lake Volcanic Field, occurred approximately 300 years ago.
Location: California, Mono County
Latitude: 37.82° N
Longitude: 119.02° W
Elevation:
2,629 (m)
8,625 (f)
Volcano type: lava domes
Composition: rhyolite
Most recent eruption: 300 years ago
Nearby towns: Crestview, Mammoth Lakes
Alert Level: Normal