Volcano List
About Alaska's Volcanoes Hazards from Alaska's Volcanoes
Map & Alphabetical List Interactive Map
Eruption Search Volcano Search
|
Text Description: Maximum thickness of 3 cm; Tephra bed occurs as small, en echelon pods in 0.3 m of finely bedded clay and silt. This unit is overlain by 0.1 m of fine sand and silt, which is overlain by 0.7 m of layered reddish-brown and black silt. From Preece et al. (2011): rare blocky shards, and rare bubble-wall shards. References:  Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada Changing ideas on the identity and stratigraphic significance of the Sheep Creek tephra beds in Alaska and the Yukon Territory, northwestern North America 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
