AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
You are here: Home > Samples > 94SJP57

Sample ID:94SJP57
Station ID:94SJP57
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
At least 30 thick flow at the base of unit nA1 at Site 3. Fine-grained, holocrystalline, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, alteration and calcite. Plagioclase phenocrysts (An 29 - An59) are up to 1.2 mm and display complex zoning. Orthopyroxene phenocrysts are up to 1.1 mm and some have clinopyroxene rims, sieve textured zones, and a few have resorbed rims. Clinopyroxene phenocrysts are up to 0.1 mm. 47.3% matrix, 39.7% plagioclase, 0.2% clinopyroxene, 9.5% orthopyroxene, 0.9% alteration, 2.4% vesicles.

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
94SJP5762.42934858-143.1301912Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S3594SJP57LavaWhole-rock 57.01 0.93 17.35 5.6 0.16 5.03 7.65 3.68 1.18 0.13 99.8555DCP6.225.6LOI=1.22DCP 22.1 534 543 13.1 28.8 14.1 2.9 1.1 2.7 2.8 1.6 1.6 0.2 19 131 4.7 3 1.6 20.3 169 130 66 50 60 17.3 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, 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 G19AC00060 and G19AC00171.

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