AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
About Alaska's Volcanoes | Hazards from Alaska's Volcanoes | Map & Alphabetical List | Interactive Map | Eruption Search | Volcano Search 
You are here: Home > Volcano Information

Spurr reported activity

SPURR LINKS

SAMPLES

Webicorders

Webcams
EVENT SPECIFIC INFORMATION

Event Name : Spurr 300 yBP

Start: 300 (± 50 Years) Years BP Tephrochronology

Tephrafall: BibCard
Eruption Type:Explosive
Eruption Product: andesite BibCard
ChemYes
Othermafic

Description: From Beget and others (1994): "The next lower ash in the Skilak cores occurs at a depth of 16-26 cm, and is compositionally much more mafic than the majority of tephras found in the cores (Table 1 [in original text]). Crater Peak, a subsidiary vent of Mt. Spurr, was almost certainly the source of this andesitic tephra. During historic eruptions of Mt. Spurr in 1953 and in 1992, ash from Crater Peak was deposited in Anchorage and other areas around Cook Inlet. The Crater Peak vent is the only Cook Inlet volcano which produces such widely dispersed mafic tephras (Riehle, 1985; Nye, 1990). The ash in Skilak Lake therefore is thought to record a previously unknown eruption of Crater Peak at Mt. Spurr about 300+/-50 years ago, with the age estimate based upon sedimentation rate estimates and interpolation between the historic tephras at the top of the cores and the 500-year-old tephra layer B from Mount St. Augustine found lower in the cores (Fig. 7 [in original text])."

Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/volcanoes/activity.php
Page modified: March 30, 2017 14:36
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS

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.