AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 94SJP98

SAMPLE INFO : 94SJP98
Sample ID:94SJP98
Station ID:94SJP98
Latitude:62.29988115
Longitude:-143.4860247
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
A dike 2-4 thick, trending N75E and subvertical, cutting thorough intercaldera flows just below the main peak at Tanada Peak. Fine grained, vesicular, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase and clinopyroxene. Plagioclase phenocrysts (An34 - An64) are up to 4.0 mm and occasionally display sieve textured zones, rounded rims, and/or oscillatory zoning. Clinopyroxene phenocrysts are up to 0.75 mm. Orthopyroxene phenocrysts are up to 0.9 mm and many are 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
94SJP9862.29988115-143.4860247Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T6N, R10E, S1394SJP98LavaWhole-rock 58.88 0.75 17.4 5.56 0.1 4.34 7.27 3.63 1.02 0.21 100.5255DCP6.175.56LOI=0.83DCP 13.4 530 638 15 98 3.6 3.9 1.1 18.1 151 71 61 55 58 17.3 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 G19AC00060 and G19AC00171.

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