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SAMPLE INFO : 98JLOK3A
Sample ID:98JLOK3A
Station ID:98JLOK3A
Latitude:53.4843
Longitude:-168.07934
Datum:NAD83
Date Sampled:1998-01-01
Sample Type 1:Pyroclastic Flow
Sample Type 2:Scoria
Final Unit:Hcfe2
Text Description:
2050 BP Okmok II ash flow scoria juvenile sample. Above sample 2b. Aphyric with lithic fragments. Top of Okmok II ignimbrite and continuation of section 2 from downstream about 0.25 to 0.5 miles. Dark scoria that contains small lithics embedded in its

References:
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

GEOCHEM DATA
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
98JLOK3A53.4843-168.07934Larsen, J. F.1998-01-01 Okmok-100--Location is higher up on the flanks near the caldera gates region2050 BP Okmok II ash flow scoria juvenile sample. Above sample 2b. Aphyric with lithic fragments. Top of Okmok II ignimbrite and continuation of section 2 from downstream about 0.25 to 0.5 miles. Dark scoria that contains small lithics embedded in its 98JLOK3APyroclastic FlowBombHcfe2Whole-rock 55.87737007 1.45678837 15.97800615 10.03012995 0.203909793 3.51008897 7.59842959 3.70283952 1.359398618 0.283038966 98.5734113XRF10.03012995 2.171643485 32.2823434 437.6173136 345.458477 13.52651707 32.15859316 4.526939205 20.11149162 5.665369648 1.641832914 6.261338739 1.073311124 7.021238909 1.469234212 4.078048186 0.585709046 3.721975651 0.579777736 36.00664609 154 4.813260989 4.333341465 0.351208072 11.15056827 3.186574849 1.508648004 33.02267173 284 23 0 116 97 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, Cu, Zn, Ga;

SAMPLE LOCATION

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