AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 74-ALe-63

SAMPLE INFO : 74-ALe-63
Sample ID:74-ALe-63
Station ID:74-ALe-63
Latitude:62.186
Longitude:-144.18898
Datum:NAD83
Date Sampled:1974-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
 Text Description:
Mount Sanford dikes (Pleistocene). Chiefly dikes of andesitic composition that have probably widely diverse ages; associated with main Sanford center, three subsidiary centers, and smaller satellitic vents. Not all dikes shown on map sheet were examined in the field; those that were visited and sampled are mostly gray, porphyritic two-pyroxene andesite and olivine andesite, mineralogically similar to host Sanford lava flows (Qsl). * * * Whole-rock K-Ar age of 0.78+/-0.08 Ma was determined on sample 74-ALe-63.

References:
Geologic map of the Gulkana A-1 Quadrangle, south-central Alaska

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 G19AC00060 and G19AC00171.

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