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SAMPLE INFO : 85CNS03
Sample ID:85CNS03
Station ID:85CNS03
Latitude:61.2232
Longitude:-152.203085
Datum:NAD83
Date Sampled:1985-01-01
Sample Type 1:Lava
Sample Type 2:Block and Ash juvenile
Text Description:
Sample of juvenile block from block-and-as flows deposited on the debris avalanche formed during flank collapse of ancestral Mt. Spurr (“pyroclastic fan”; sample PF-03 of Nye and Turner (1990). From exposure high up in canyon immediately south of Crater Peak. Same small equant plag as S1 but big px megacrysts/phenocrysts/xenocryst clots. 15-20% cpx up to 5 mm diameter. Upper part of this canyon has a couple of b&a flows w/ avalanche debris of altered material between, perhaps vent clearing.

General Mineralogy Description:
Same small equant plag as S! but big px megacrysts/phenocrysts/xenocryst clots. 15020% cpx up to 5 mm diameter.

References:
Petrology, geochemistry, and age of the Spurr volcanic complex, eastern Aleutian arc
Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell

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
85CNS0361.2232-152.203085Nye, C. J.1985-01-01 SpurrSample of juvenile block from block-and-as flows deposited on the debris avalanche formed during flank collapse of ancestral Mt. Spurr (“pyroclastic fan”; sample PF-03 of Nye and Turner (1990). From exposure high up in canyon immediately south of Crater Peak. Same small equant plag as S1 but big px megacrysts/phenocrysts/xenocryst clots. 15-20% cpx up to 5 mm diameter. Upper part of this canyon has a couple of b&a flows w/ avalanche debris of altered material between, perhaps vent clearing.85CNS03LavaWhole-rock 56.41 0.922 18.17 0.135 4.55 7.64 3.71 1.164 0.189 99.6713291XRF7.11 0.21014065 18.01352434 393 0 29 3 3.987346211 17.34101262 4.095386417 1.320894456 4.051617673 0.630800594 3.817891289 0.7474971 2.05144635 0.291173761 1.886118106 0.300616905 14.73821349 0 3.022121947 2.671579052 0.241385226 4 3 0.644249307 32 245 56 0 20 83 21 13291ICPMS: Cs, Rb, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Nb, Hf, Ta, U; XRF: Ba, La, Ce, Pb, Th, Sc, V, Cr, Cu, Zn, Ga;
85CNS0361.2232-152.203085Nye, C. J.1985-01-01 SpurrSample of juvenile block from block-and-as flows deposited on the debris avalanche formed during flank collapse of ancestral Mt. Spurr (“pyroclastic fan”; sample PF-03 of Nye and Turner (1990). From exposure high up in canyon immediately south of Crater Peak. Same small equant plag as S1 but big px megacrysts/phenocrysts/xenocryst clots. 15-20% cpx up to 5 mm diameter. Upper part of this canyon has a couple of b&a flows w/ avalanche debris of altered material between, perhaps vent clearing.85CNS03LavaWhole-rock 56.65 0.87 17.83 7.08 0.13 4.95 7.87 3.26 1.15 0.2 100.471580XRF7.08LOI=-0.08XRF 22.2 592 16.3 95 5.3 16 1580XRF

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