Scientist examines volcanic deposits formed by explosive eruptions...
By Volcano Hazards Program
1991 (approx.)
Detailed Description
These layers of tephra were exposed in a trench dug in Pumice Valley, located about 3 km (1.8 mi) south-southwest from the South Deadman flow. From bottom to top the layers record explosive eruptions from the Deadman and Glass Creek vents and the Inyo Craters.
Sources/Usage
Public Domain.
unknown USGS source