AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 79AMm 34

SAMPLE INFO : 79AMm 34
Sample ID:79AMm 34
Station ID:79AMm 34
Latitude:57.83261051
Longitude:-156.5
Datum:NAD83
Date Sampled:1979-01-01
Sample Type 1:Other
Sample Type 2:Igneous
Field Lithology:Andesite
Text Description:
Hypabyssal plug of light-gray (N7) dacite porphyry. Phenocryst phases are hornblende, biotite, plagioclase (An 48), and quartz. Phenocrysts are dominated by plagioclase, and less abundant hornblende and biotite in a glassy groundmass. Quartz is in blebs although it appears primary. Plagioclase phenocrysts have overgrowths over corroded cores. Rock is partly vesicular.

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

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
79AMm 3457.83261051-156.5Miller, T. P.1979-01-01 Gas Rocks, theUgashik D-2Hypabyssal plug of light-gray (N7) dacite porphyry. Phenocryst phases are hornblende, biotite, plagioclase (An 48), and quartz. Phenocrysts are dominated by plagioclase, and less abundant hornblende and biotite in a glassy groundmass. Quartz is in blebs although it appears primary. Plagioclase phenocrysts have overgrowths over corroded cores. Rock is partly vesicular.79AMm 34OtherQuenched InclusionWhole-rock 64.9 0.58 16.1 5.04 0.1 1.83 4.56 3.72 2.49 0.14 99.184092XRF3.052.24CO2=0.01; H2OP=0.4; H2OM=0.12XRF

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.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.