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Sample ID:99JLOK20A
Station ID:99JLOK20
Date Sampled:1999-01-01
Sample Type 1:pyroclastic density current
Sample Type 2:Pumice
Final Unit:Pcfe1
Text Description:
Okmok I deposits sampled here for juvenile mafic scoria 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
99JLOK2053.31004-168.08834Larsen, J. F.1999-01-01 Okmok-10050--Outcrop located in a stream cut to the southwest of Mt Tulik, south of the caldera rimOkmok I deposits sampled here for juvenile mafic scoria fragments.99JLOK20Apyroclastic density currentBombPcfe1Whole-rock 54.04067947 1.783514109 15.97689309 11.43428468 0.22824133 3.827586903 8.119735806 3.211537296 1.070512432 0.307014886 99.0184113XRF11.322 1.6779660719083 23.477398509143 386.89092654823 351.34550469518 11.866153248223 28.077477892856 4.1582533077066 19.312590692831 5.4927812063689 1.6955917779227 6.0744092062813 1.06572339187 6.7729328015914 1.4103067308099 3.9540126878713 0.56972789675153 3.5623004083392 0.55197158479366 35.346579124626 128.42350048607 3.6981131181117 3.7908768422721 0.28687297943826 10.139663937754 2.3433497776298 1.1615729239005 38.809451353724 379 20 7 114 102 20 4113ICPMS: 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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