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SAMPLE INFO : 98JLOK1A
Sample ID:98JLOK1A
Station ID:98JLOK1
Latitude:53.4735
Longitude:-167.91206
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 sample which is very similar in stratigraphic position to 98JLOK1A. Sample collected from near top of the ignimbrite deposits. Phenocryst-poor scoria with minor included lithic fragments

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
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 which is very similar in stratigraphic position to 98JLOK1A. Sample collected from near top of the ignimbrite deposits. Phenocryst-poor scoria with minor included lithic fragments98JLOK1APyroclastic FlowBombHcfe2Whole-rock 56.81598813 1.465104701 15.91091513 9.59633419 0.207268626 3.159830527 7.142639424 3.921847536 1.473232883 0.306838849 98.4234113XRF9.59633419 2.348592869 34.64739971 470.6162042 341.8889517 14.64365816 34.28634909 4.850265792 21.8258746 5.937669046 1.693654452 6.429604261 1.13218234 7.312316962 1.542292558 4.242467885 0.618656019 3.940643318 0.617653918 39.53702538 164 5.181507461 4.800401732 0.367287516 8.335351946 3.460348704 1.668673264 32.56296347 264 16 0 90 96 18 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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