AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 94SJP29

SAMPLE INFO : 94SJP29
Sample ID:94SJP29
Station ID:94SJP29
Latitude:62.43768247
Longitude:-143.1257474
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Basaltic Andesite
Text Description:
Subvertical dike trending N20W and intruding into silicic material from Dome A at Site 2. Fine-grained, seriate, intergranular, altered, vesicular, holocrystalline with a matrix of mesostasis, opaque, feldspar, clinopyroxene, calcite alteration and other alteration. Plagioclase phenocrysts (An19-An56) are 1.3 - 0.05 mm; larger grains have sieve textured cores, complex zoning, embayments, and one grain has strongly poikilitic olivine or clinopyroxene. Orthopyroxene phenocrysts are 0.3 - 0.05 mm, subhedral, some have clinopyroxene rims and/or melt inclusions. Clinopyroxene phenocrysts are 0.55 - 0.5 mm. Olivine? phenocrysts are nearly completely altered.

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
94SJP2962.43768247-143.1257474Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T8N, R12E, S35Subvertical dike trending N20W and intruding into silicic material from Dome A at Site 2. Fine-grained, seriate, intergranular, altered, vesicular, holocrystalline with a matrix of mesostasis, opaque, feldspar, clinopyroxene, calcite alteration and other alteration. Plagioclase phenocrysts (An19-An56) are 1.3 - 0.05 mm; larger grains have sieve textured cores, complex zoning, embayments, and one grain has strongly poikilitic olivine or clinopyroxene. Orthopyroxene phenocrysts are 0.3 - 0.05 mm, subhedral, some have clinopyroxene rims and/or melt inclusions. Clinopyroxene phenocrysts are 0.55 - 0.5 mm. Olivine? phenocrysts are nearly completely altered.94SJP29LavaWhole-rock 54.88 0.78 18.1 5.64 0.15 4 8.7 3.62 1.18 0.34 98.5555DCP6.135.64LOI=2.58DCP 21.2 472 623 17 95 3.1 3.8 2.2 21 162 31 59 71 60 17.6 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.