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Sample ID:97ANB45f
Station ID:97ANB45f
Sample Type 1:Tephra Fall
Final Unit:1931
Text Description:
1931 lapilli basal few cm of tephra on Cowbweb flow

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
97ANB45f56.9176-158.178Bacon, C. R. Aniakchak1931-5-1On Cobweb flow1931 lapilli basal few cm of tephra on Cowbweb flow97ANB45fTephra FallCumulate1931Whole-rock 67.09 0.783 15.97 3.63 0.165 1.16 3.32 5.29 2.37 0.218 99.9059191XRF3.63 2.505697841 55.08308142 751.0154894 299.3420412 21.77761436 46.13043378 6.174742803 26.42365212 6.588964264 1.871854851 6.790817777 1.139977114 7.161485892 1.474288332 4.166178987 0.619638194 3.946265197 0.627356329 39.23205816 200.4239523 11.5137915 5.497918196 0.797899475 9.277894117 5.046538635 2.216040727 12.98971371 29 3 6 5 88 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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