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Sample ID:ANI-TR-2
Station ID:ANI-TR-2
Date Sampled:2002-07-11
Sample Type 1:Tephra Fall
Sample Type 2:Pumice
Final Unit:Cobweb Tuff Cone
Text Description:
Gray vesicle-poor pyroclasts in tuff 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
ANI-TR-256.912-158.1821Browne, B. L.2002-07-11 Aniakchak1931-5-1Tuff ring in middle of Cobweb lava flowGray vesicle-poor pyroclasts in tuff coneANI-TR-2Tephra FallCumulateCobweb Tuff ConeWhole-rock 62.21665775 1.033915247 16.53860522 5.914722186 0.194868792 2.261689603 5.048414293 4.533476035 1.867913288 0.389737583 99.0419191XRF5.914722186 1.945647552 41.7408743 604.0191387 362.3433325 18.79729885 40.85214721 5.638052271 25.04086102 6.405749679 1.921564833 6.715521826 1.092953553 6.903781861 1.392118068 3.845935728 0.5691586 3.540388677 0.559058597 35.65306969 154.3121414 9.074936822 4.341666942 0.61886753 7.505626331 3.992319857 1.71791055 18.54179469 83 2 4 6 97 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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