AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 81ARj 38b

SAMPLE INFO : 81ARj 38b
Sample ID:81ARj 38b
Station ID:81ARj 38
Latitude:57.2
Longitude:-156.777
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Other
Sample Type 2:Pyroclast
Field Lithology:Dacite
Text Description:
Find-grained, porphyritic dacite clast in ash flow. Very similar to sample 81ARj 38a; although, not flow foliated. Contains a higher proportion of lithic fragments, and the plagioclase phenocrysts have an An content of 56.

References:
Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska

GEOCHEM DATA