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Sample ID:NA92-62A
Station ID:NA92-62
Sample Type 1:Tephra Fall
Sample Type 2:Bulk
Final Unit:Brown Pumice
Text Description:
Dark brown pyroclast on top of Surprise 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
NA92-6256.9043-158.1278Neal, C. A. AniakchakTop of Surprise ConeDark brown pyroclast on top of Surprise ConeNA92-62ATephra FallCumulateBrown PumiceWhole-rock 60.13 1.098 16.44 7.13 0.188 2.61 5.98 4.4 1.73 0.301 100.049191XRF7.13 1.846186879 36.48347351 549.6426182 0 16.28534467 34.67267291 4.882661263 21.00473392 5.367499707 1.62784405 5.973633082 0.99549539 6.086998882 1.223014792 3.348908883 0.502278806 3.23781856 0.516551323 30.83145227 138.1400904 8.038270602 4.055225852 0.561903506 6.708547847 3.670689379 1.611004913 0 150 7 0 16 97 20 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, Cu, Zn, Ga;


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