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Sample ID:98JLOK5A
Station ID:98JLOK5A
Date Sampled:1998-01-01
Sample Type 1:Pyroclastic Flow
Sample Type 2:Scoria
Text Description:
2050 BP andesite ash flow scoria. Top of ash-flow, in small depression. Lithic rich.

Magmatic differentiation at an island-arc caldera: a stratigraphically constrained multi-isotope study of Okmok Volcano, Aleutian Islands, Alaska

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
98JLOK5A53.51843-167.96798Larsen, J. F.1998-01-01 Okmok-100--2050 BP andesite ash flow scoria. Andesite from top of ash flow sampled in a small quarry-like depression. Looks again very similar to samples 3a, and 1b. Embedded lithics in matrix glass.2050 BP andesite ash flow scoria. Top of ash-flow, in small depression. Lithic rich.98JLOK5APyroclastic FlowBombWhole-rock 55.49732944 1.4521818 15.98306964 10.13000101 0.20155195 3.567469515 7.800060466 3.769021465 1.320165273 0.279149451 99.234113XRF10.13000101 2.134804784 31.78967542 431.8947546 341.000479 13.2633601 31.24289832 4.486992136 20.1825152 5.544638631 1.6611826 6.279435941 1.074368127 6.800808612 1.426867489 3.914200696 0.589892914 3.625373421 0.572625295 36.88157202 149 4.622253472 4.29375112 0.340610353 11.02075812 3.062892746 1.485602966 34.8465618 303 25 0 125 98 19 4113ICPMS: Cs, Rb, Ba, Sr, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Nb, Hf, Ta, Pb, Th, U, Sc; XRF: Zr, V, Cr, Cu, Zn, Ga;


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