AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
You are here: Home > Samples > 95SJP9A

Sample ID:95SJP9A
Station ID:95SJP9A
Date Sampled:1995-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Field Lithology:Andesite
Text Description:
Approximately 40 of agglutinated material at Site 8. 95SJP9A is part of a massive block. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene and alteration. Plagioclase phenocrysts (An39 - An64) are up to 1.42 mm and frequently have normal zoning, and occasionally oscillatory zoning and/or sieve textured zones. Olivine phenocrysts are up to 1.0 mm with some alteration along rims. Orthopyroxene phenocrysts are up to 1.0 mm, but most are < 0.3 mm. One clinopyroxene phenocrysts, 0.5 mm, was observed.

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

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
95SJP9A62.38490081-143.0260225Preece, S. J.1995-00-00 Skookum CreekNabesna B-5; T7N, R13E, S1695SJP9ATephra FallCumulateWhole-rock 57.23 0.98 17.77 6.54 0.11 4.3 7.07 3.79 1.21 0.18 100.5655DCP7.266.54LOI=0.8DCP 22.3 455 524 20 123 3.6 3.8 1.4 20.6 170 24 37 46 69 17.8 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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.