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Sample ID:NA92-62B
Station ID:NA92-62
Sample Type 1:Tephra Fall
Sample Type 2:Bulk
Final Unit:Brown Pumice
Text Description:
Dark brown ppyroclast 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 ppyroclast on top of Surprise ConeNA92-62BTephra FallCumulateBrown PumiceWhole-rock 58.44 1.168 16.44 8.06 0.19 2.92 6.66 4.26 1.55 0.303 99.869191XRF8.06 1.601722255 34.882215 495.179362 0 15.24126722 32.65353885 4.649917609 20.69834801 5.416196985 1.711079565 5.597984231 0.926355261 5.72888097 1.232403029 3.341745698 0.481536072 3.06013554 0.481480073 30.30456966 129.9406459 8.0376575 3.742012079 0.598457648 6.322072796 3.270141903 1.41940824 0 201 7 3 22 97 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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