AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 74AM54

SAMPLE INFO : 74AM54
Sample ID:74AM54
Station ID:74AM54
Latitude:57.75
Longitude:-156.466
Datum:NAD83
Date Sampled:1974-01-01
Sample Type 1:Lava
Field Lithology:Dacite
Text Description:
Porphyritic hornblende-biotite dacite. Phenocrysts chiefly plagioclase with hornblende and biotite in a vesiculated cryptocrystalline felsic groundmass.

References:
Geology of the Ugashik-Mount Peulik volcanic center, Alaska

GEOCHEM DATA