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SAMPLE INFO : 96-ARh-53D
Sample ID:96-ARh-53D
Station ID:96-ARh-53D
Latitude:54.106
Longitude:-165.93498
Datum:NAD83
Date Sampled:1996-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Final Unit:lcb
Text Description:
Qcl - Cascade Bight lava flows. Thin (2-5 m) lava flows, exhibiting reddish scoriaceous tops and bottoms, dip away from summit breccia and plug area. Rocks are medium dark gray porphyritic basaltic andesites (55.1% SiO2) containing phenocrysts of plagioclase (10-15%, 3 mm), clinopyroxene (1-5%, 3 mm), orthopyroxene (1-3%, 1 mm), and olivine (1-3%, 3 mm) in a cryptocrystalline groundmass. Whole rock 40Ar/39Ar mean age of basaltic andesite is 0.15+/-0.05 Ma.

References:
Geologic map of Akutan Island, Alaska
The eruptive history, magmatic evolution, and influence of glacial ice at long-lived Akutan volcano, eastern 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
96-ARh-53D54.106-165.93498Richter, D. H.1996-00-00 150000 ± 50000 40Ar/39Ar; 924; date of the unitAkutanlat/long estimated from paper mapQcl - Cascade Bight lava flows. Thin (2-5 m) lava flows, exhibiting reddish scoriaceous tops and bottoms, dip away from summit breccia and plug area. Rocks are medium dark gray porphyritic basaltic andesites (55.1% SiO2) containing phenocrysts of plagioclase (10-15%, 3 mm), clinopyroxene (1-5%, 3 mm), orthopyroxene (1-3%, 1 mm), and olivine (1-3%, 3 mm) in a cryptocrystalline groundmass. Whole rock 40Ar/39Ar mean age of basaltic andesite is 0.15+/-0.05 Ma.96-ARh-53DLavalcbWhole-rock 55.1 0.959 18.81 8.34 0.186 3.49 8.25 3.75 0.98 0.145 924XRF8.34 0.651227337 18.8473097 321.0521913 380.4438728 8.0828845 18.81751489 2.641475804 12.1711314 3.559806462 1.136409601 4.018604836 0.685577909 4.527117118 0.954390715 2.746240674 0.394219496 2.563875028 0.404081283 24.33217447 90.53638201 1.914798342 2.746128079 0.14151266 6.4173466 2.603781731 1.220082264 24.5022523 238 12 0 64 69 17 924ICPMS: 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, Cu, Zn, Ga;

SAMPLE LOCATION

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