AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 73ARh17

SAMPLE INFO : 73ARh17
Sample ID:73ARh17
Station ID:73ARh17
Latitude:62.1322
Longitude:-144.62498
Datum:NAD83
Date Sampled:1973-00-00
Sample Type 1:Other
Text Description:
Undifferentiated plugs and small intrusive bodies - Chiefly dacite in composition and probably related to second-cycle activity, but many outcrops high on Mount Drum were not visited. Dacitic rocks are light to medium gray with plagioclase, hornblende, and minor biotite and hypersthene phenocrysts in a felty to trachytic groundmass. One intrusive rhyodacite (sec. 29, T4N, R4E) is light buff gray and contains plagioclase and rare hornblende phenocrysts in a feldspar-rich pilotaxitic groundmass.

References:
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

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
73ARh1762.1322-144.62498Richter, D. H.1973-00-00 DrumWrangell Lava, Mount Drum, AlaskaUndifferentiated plugs and small intrusive bodies - Chiefly dacite in composition and probably related to second-cycle activity, but many outcrops high on Mount Drum were not visited. Dacitic rocks are light to medium gray with plagioclase, hornblende, and minor biotite and hypersthene phenocrysts in a felty to trachytic groundmass. One intrusive rhyodacite (sec. 29, T4N, R4E) is light buff gray and contains plagioclase and rare hornblende phenocrysts in a feldspar-rich pilotaxitic groundmass.73ARh17OtherQuenched InclusionWhole-rock 65 0.44 17.06 3.5 0.07 2.33 5.1 4.16 1.84 0.15 100.2555DCP3.893.5LOI=0.34DCP 590 712 8 96 8.9 76 34 30 48 56 55DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

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.