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Sample ID:NA92-24
Station ID:NA92-24
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Final Unit:Brown Pumice
Text Description:
Brown agglutinate, east of Half Cone

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
NA92-2456.9324-158.1608Neal, C. A. AniakchakEast of Half Cone, agglutinate moundBrown agglutinate, east of Half ConeNA92-24Tephra FallCumulateBrown Pumice Whole-rock 58.34 1.186 16.57 7.91 0.194 3.04 6.74 4.19 1.53 0.301 99.589191XRF7.91 1.507206597 32.78792745 480.4274439 0 14.89277394 31.87289803 4.445956535 19.81299008 5.051642725 1.576080699 5.274790085 0.892264449 5.637593012 1.189348239 3.187874073 0.473972474 2.883933708 0.452257037 31.11850101 132.4855613 7.629075597 3.691268607 0.525051832 5.398827165 3.187027528 1.369399712 0 181 7 1 16 95 21 9191ICPMS: Cs, Rb, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Zr, Nb, Hf, Ta, Pb, Th, U; XRF: V, Cr, Ni, Cu, Zn, Ga;


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