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Sample ID:98JLOK1B
Station ID:98JLOK1
Date Sampled:1998-01-01
Sample Type 1:Pyroclastic Flow
Sample Type 2:Scoria
Final Unit:Hp2
Text Description:
2050 BP Okmok II ash flow scoria sample. Sample collected from near top of the ignimbrite deposits. Phenocryst-poor scoria with minor included lithic fragments

Magmatic differentiation at an island-arc caldera: a stratigraphically constrained multi-isotope study of Okmok Volcano, Aleutian Islands, Alaska
Late Pleistocene and Holocene caldera-forming eruptions of Okmok Caldera, 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
98JLOK153.4735-167.91206Larsen, J. F.1998-01-01 Okmok-100--Location is along the old road leading from the ranch house to Crater Creek. This location is in the stream drainage to the west of Cape Idak2050 BP Okmok II ash flow scoria sample. Sample collected from near top of the ignimbrite deposits. Phenocryst-poor scoria with minor included lithic fragments98JLOK1BPyroclastic FlowBombHp2Whole-rock 55.49503752 1.465545066 16.02719277 10.0994513 0.203744049 3.590736706 7.826999112 3.691600097 1.321310417 0.278382958 99.1444113XRF10.0994513 2.085184812 31.87762767 425.3332597 347.3525044 12.98904185 30.19997252 4.325117214 19.85455843 5.447144592 1.579824454 6.172954696 1.05595591 6.87585329 1.443758405 3.945490378 0.572355269 3.618003181 0.573539697 36.41742672 148 4.644213456 4.243196703 0.336685352 10.89195512 3.059995198 1.494706498 36.12963088 324 23 3 134 92 21 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, Ni, Cu, Zn, Ga;


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