Reference sample for Augustine Volcano from Riehle and others (1998). Late Holocene lapilli sample (R.B. Waitt, unpublished data)
Age of formation of Kaguyak Caldera, eastern Aleutian Arc, Alaska, estimated by tephrochronology
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.