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Sample ID:99JLOK20D
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 ash flow deposits sampled here for rhyodacite pumice 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 ash flow deposits sampled here for rhyodacite pumice fragments99JLOK20Dpyroclastic density currentBombPcfe1Whole-rock 71.6392109 0.351840553 13.65670124 3.929225137 0.136261948 0.254220053 1.932072402 4.514948139 3.548911938 0.036607688 98.344113XRF3.864 5.8078124850684 81.829668896534 1014.3967636094 139.97771713973 29.829362818076 67.771357893076 9.3528800655736 40.762788743251 10.787751447378 2.1041345076816 11.391652020988 2.0863369809157 13.603452424268 2.9191233630824 8.4531019146099 1.280342220393 8.1926835927179 1.3010802291699 74.607860194546 389.31356596527 10.363208752375 11.171645830626 0.78528275190688 30.846033884484 8.0514352197266 3.8686679785926 9.0742636371379 30 0 7 31 122 19 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, Ni, Cu, Zn, Ga;


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