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SAMPLE INFO : 95-ASL-18B
Sample ID:95-ASL-18B
Station ID:95-ASL-18
Latitude:62.13
Longitude:-143.10998
Datum:NAD83
Sample Type 1:Tephra Fall
Sample Type 2:Pyroclast
 Text Description:
Knob on the west side of Mt. Gordon. Outcrop consists of red scoria rubble occasionally encasing dark blue melt. Interpreted as a "fire fountain" eruption setting. Gabbroic xenoliths are present in massive melt material. May represent the youngest activity in the area. Sample 18A is blue-gray agglutinate with 3-5% small (<1 mm) olivine phenocrysts and 5-7% 1-2 mm acicular plagioclase. 18B is a red pyroclastic sample with the same mode.

References:
A reconnaissance study of mafic to intermediate intra-arc volcanism in the western Wrangell Volcanic Field, 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
95-ASL-1862.13-143.10998Lunt, A. S. GordonMount Gordon. SW 1/4, NW 1/4, Sec 18, T4N, R12E, Nabesna A-5 quad, AlaskaKnob on the west side of Mt. Gordon. Outcrop consists of red scoria rubble occasionally encasing dark blue melt. Interpreted as a "fire fountain" eruption setting. Gabbroic xenoliths are present in massive melt material. May represent the youngest activity in the area. Sample 18A is blue-gray agglutinate with 3-5% small (<1 mm) olivine phenocrysts and 5-7% 1-2 mm acicular plagioclase. 18B is a red pyroclastic sample with the same mode.95-ASL-18BTephra FallCumulateWhole-rock 55.18 1.11 17.33 7.56 0.14 5.27 7.53 3.9 0.98 0.38 100.626122DCP8.387.56LOI=0.62DCP 15 3556 578 13 33 21 139 6.7 21 171 103 64 45 70 17 6122DCP

SAMPLE LOCATION

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