AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > FC-77a

SAMPLE INFO : FC-77a
Sample ID:FC-77a
Station ID:FC-77
Latitude:54.651
Longitude:-164.525
Datum:NAD83
Date Sampled:2000-07-12
Sample Type 1:Tuff
 Text Description:
Welded tuff. Black cinders(highly vesicular) large dense clasts, lithics. Largest lithics are ~4 cm. Base is uncertain, but ~ 6m wall exposed. Exposures are on both sides of creek, opposite wall downstream shows ~ 10 m thick section. Deposit is poorly welded. Some banded pumice seen, but rare. Large, dense blocks have oxidation rinds up to 2 cm thick and have lithics within, some up to ~1.5 cm. Single black scoria bomb, broken up. Highly vesicular. Very few xtals, nearly aphyric.

References:
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/samples/sample_info.php
Page modified: August 1, 2017 15:29
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 G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.