AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 94SJP3

SAMPLE INFO : 94SJP3
Sample ID:94SJP3
Station ID:94SJP3
Latitude:62.30155964
Longitude:-143.2554608
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Text Description:
25-30 foot thick flow at the base of Site 12. Directly overlies 94SJP2 dipping at N60E, 45W. Fine grained, holocrystalline, trachytic, intergranular, seriate porphyritic with a matrix of green alteration, plagioclase, opaques, and clinopyroxene. Plagioclase phenocrysts (An40-An58) are up to 2 mm and some of the largest grains are zoned and riddled with alteration and clinopyroxene inclusions. Clinopyroxene phenocrysts are up to 0.25 mm. An altered phase is present (olivine?).

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
94SJP362.30155964-143.2554608Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T6N, R12E, S1825-30 foot thick flow at the base of Site 12. Directly overlies 94SJP2 dipping at N60E, 45W. Fine grained, holocrystalline, trachytic, intergranular, seriate porphyritic with a matrix of green alteration, plagioclase, opaques, and clinopyroxene. Plagioclase phenocrysts (An40-An58) are up to 2 mm and some of the largest grains are zoned and riddled with alteration and clinopyroxene inclusions. Clinopyroxene phenocrysts are up to 0.25 mm. An altered phase is present (olivine?).94SJP3LavaWhole-rock 51.93 1.5 17.53 8.61 0.16 6.11 9.45 3.65 0.35 0.19 98.7455DCP9.368.61LOI=0.48DCP 3.2 206 416 28 127 3 1.4< 0.5 31.1 220 126 44 43 81 18 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

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 G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.