Volcano List
About Alaska's Volcanoes Hazards from Alaska's Volcanoes
Map & Alphabetical List Interactive Map
Eruption Search Volcano Search
|
Text Description: Frome Preece et al. (2011): 5 cm thick; bubble-wall shards and pumice; in dark brown, deformed organic-rich silt; ~5.5 m above basal gravel and sand; field name 98SJP17. Sample collected by S. Preece, 1998. References:  A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon 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.
Operations
Response
Staff
Fields of Study
Geology
Color Code Definitions
Webcams
Webicorders
RSAM
Great Sitkin
Trident
Glossary
Recent Images
Browse Images
