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Sample ID:ANI-50-1a
Station ID:ANI-50-1
Date Sampled:2002-07-15
Sample Type 1:Tephra Fall
Final Unit:pre-400 yr
Text Description:
Beige-white tephra in west wall of 1931 vent

Postglacial eruptive history, geochemistry, and recent seismicity of Aniakchak Volcano, Alaska
The ~400 yr b.p. eruption of Half-Cone, a post-caldera composite cone within Aniakchak Caldera, Alaska Peninsula

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
ANI-50-156.9058-158.2151Browne, B. L.2002-07-15 Aniakchak1931 Main Crater wallBeige-white tephra in west wall of 1931 vent ANI-50-1aTephra FallCumulatepre-400 yr Whole-rock 62.60922269 0.979847467 16.57659478 5.657861508 0.186878125 2.262740542 5.101267741 4.323450679 2.010202535 0.291933936 98.9959191XRF5.657861508 2.150892311 45.50002827 631.6335372 328.3028445 19.08727422 40.83489152 5.587039631 23.84869349 5.995104535 1.791796566 6.16050232 1.046001019 6.548930315 1.355473663 3.765811911 0.553367376 3.481021995 0.559312725 34.60978564 164.9478259 9.658979363 4.617867462 0.667498286 8.03923412 4.437874828 1.919342305 19.42536042 102 6 6 11 92 17 9191ICPMS: Cs, Rb, Ba, Sr, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Zr, Nb, Hf, Ta, Pb, Th, U, Sc; XRF: V, Cr, Ni, Cu, Zn, Ga;


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