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SAMPLE INFO : AC-19
Sample ID:AC-19
Station ID:AC-19
Latitude:56.91589903
Longitude:-158.0687354
Datum:NAD83
Date Sampled:1997-01-01
Sample Type 1:Tephra Fall
Final Unit:Qbn
Text Description:
dark brown pumice block from 1m above base of top portion of main plinian fall

References:
The physical volcanology and petrology of the 3400 YBP caldera-forming eruption of Aniakchak Volcano, Alaska
Low-delta (super 18) O tephra from a compositionally zoned magma body: Fisher Caldera, Unimak Island, Aleutians
Postglacial eruptive history, geochemistry, and recent seismicity of Aniakchak Volcano, Alaska

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
AC-1956.91589903-158.0687354Dreher, S. T.1997-01-01 Aniakchak-5050--Caldera rim north of The Gates; Dreher loc 1dark brown pumice block from 1m above base of top portion of main plinian fallAC-19Tephra FallCumulateQbnWhole-rock 67.38 0.85 15.41 0.17 1.01 2.88 5.25 2.74 0.22 99.75815XRF4.07 3.004219119 62.51321498 825.9585418 259.9535606 26.48114734 56.91549313 7.709162124 33.17790276 8.250124894 2.191075321 8.378597076 1.418734769 8.791984479 1.810785534 5.109297196 0.763832085 4.790518212 0.779717548 47.64798998 243.9468837 14.50964275 6.844317687 1.011676347 9.836707652 6.414027207 2.760210463 14.75064532 658ICPMSFeOT V=4.08, M=, R=815;
AC-1956.91589903-158.0687354Dreher, S. T.1997-01-01 Aniakchak-5050--Caldera rim north of The Gates; Dreher loc 1dark brown pumice block from 1m above base of top portion of main plinian fallAC-19Tephra FallCumulateQbnWhole-rock 67.39 0.85 15.41 4.08 0.17 1.01 2.88 5.25 2.74 0.22 99.81658XRF0.683.46FeOT V=4.08, M=, R=815;

SAMPLE LOCATION

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