Post-caldera eruptions of Mammoth Mountain (distant snow-covered pe...
Detailed Description
View of Mammoth Mountain is toward the south-southwest. Dry Creek Dome and Deer Mountain are thick individual rhyolite flows (moat rhyolites) that were erupted about 115,000–97,000 years ago. Earthquake Dome consists of rhyo-dacite lava that is similar to the lava flows that built Mammoth Mountain; the dome was erupted about 86,000 ± 2 years ago.
Sources/Usage
Public Domain.