AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 81AYb 167

SAMPLE INFO : 81AYb 167
Sample ID:81AYb 167
Station ID:81AYb 167
Latitude:57.224271767331
Longitude:-156.66539821083
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Lava
Field Lithology:Andesite
Text Description:
Fine-grained to very fine-grained, dark-gray (N 3), porphyritic andesite (S; high-silica andesite G) containing common very light-gray (N 8) phenocrysts of plagioclase. Major minerals are plagioclase (An 65), clinopyroxene, and sparse orthopyroxene. Pilotaxic groundmass contains weakly flow foliated plagioclase laths and glass. Rare altered phenocrysts have been olivine, otherwise rock is fresh appearing

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

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoLocation DescriptionText DescriptionSample IDSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
81AYb 167 57.224271767331 -156.66539821083 Yount, Elizabeth 1981-01-01 KialagvikUgashik A-2, ridge south of Lone Hill on Kialagvik Creek.Fine-grained to very fine-grained, dark-gray (N 3), porphyritic andesite (S; high-silica andesite G) containing common very light-gray (N 8) phenocrysts of plagioclase. Major minerals are plagioclase (An 65), clinopyroxene, and sparse orthopyroxene. Pilotaxic groundmass contains weakly flow foliated plagioclase laths and glass. Rare altered phenocrysts have been olivine, otherwise rock is fresh appearing81AYb 167 58.964594244938 0.78754081354541 17.063384293484 6.323029896483 0.1413534793543 3.4126768586968 7.2898008638434 2.9684230664404 1.7568218148321 0.19183686483798 99.34092XRF2.573.95CO2=0.09; H2OP=0.82; H2OM=0.18XRF

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/samples/sample_info.php
Page modified: July 14, 2014 13:37
Contact Information: AVO Web Team

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