3 cm of mixed very dark grey scoria and strong
brown pumiceous sand.
Holocene tephrochronology of the Cold Bay area, Southwest Alaska Peninsula
Holocene tephrochronology of the Cold Bay area, southwest Alaska Peninsula
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.