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Sample ID:ANI-50-1B
Station ID:ANI-50-1
Date Sampled:2002-07-15
Sample Type 1:Tephra Fall
Sample Type 2:Pumice
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-50-1BTephra FallCumulatepre-400 yr Whole-rock 62.77519693 1.046253282 16.60270652 5.432235912 0.192890325 2.10058574 4.948495253 4.483942638 2.039991921 0.377701474 99.029191XRF5.432235912 2.057769142 44.60551895 624.4257728 352.6150941 19.71067711 42.14927339 5.717000427 25.24383898 6.302914916 1.90034078 6.587203366 1.101052439 6.760533174 1.402383577 3.837685613 0.55420221 3.542236748 0.578372904 35.54524911 162.5517592 9.853654558 4.49640236 0.685147092 7.92146547 4.336883006 1.891130565 18.02544156 79 1 4 7 96 21 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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