AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 94SJP59

SAMPLE INFO : 94SJP59
Sample ID:94SJP59
Station ID:94SJP59
Latitude:62.29072562
Longitude:-143.2376827
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
 Text Description:
Flow from andesite package that appears to overlie the Dome D at Site 12. Flow is part of the brecciated unit. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, microlites, orthopyroxene and olivine. Plagioclase phenocrysts (An30-An59) are up to 2.75 mm, some cores are strongly sieve textured, oscillatory zoning is uncommon, and normal zoning is common. Olivine phenocrysts are up to 0.9 mm, may have opaque inclusions and sometimes are rimmed by small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 0.9 mm.

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
94SJP5962.29072562-143.2376827Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T6N, R12E, S20Flow from andesite package that appears to overlie the Dome D at Site 12. Flow is part of the brecciated unit. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, microlites, orthopyroxene and olivine. Plagioclase phenocrysts (An30-An59) are up to 2.75 mm, some cores are strongly sieve textured, oscillatory zoning is uncommon, and normal zoning is common. Olivine phenocrysts are up to 0.9 mm, may have opaque inclusions and sometimes are rimmed by small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 0.9 mm.94SJP59LavaWhole-rock 55.59 0.89 19.06 6.58 0.11 4.62 7.97 3.79 0.93 0.28 99.6355DCP7.236.58LOI=0.19DCP 16.3 388 654 14 83 3.6 2 1.3 20.5 197 71 57 64 66 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: 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.