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SAMPLE INFO : 90ADg-2
Sample ID:90ADg-2
Station ID:90ADg-2
Latitude:61.4028
Longitude:-141.7003
Datum:NAD83
Sample Type 1:Tephra Fall
Sample Type 2:Glass/Obsidian
Text Description:
Large pumice blocks of WRA were broken into smaller pieces using a clean rock hammer and then lightly crushed with a mortar and pestle. Both the crushed pumice and finer grained tephra samples were sieved to between 0.25 and 0.125 mm and then separated using magnetic methods. The resulting glass was mounted in epoxy blocks and polished. 35-40 cm pumice block; note sample previously analyzed as whole-rock by Richter et al. (1995).

References:
Chemical complexity and source of the White River Ash, Alaska and Yukon

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialCoeffSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
90ADg-261.4028-141.7003McGimsey, R. G.1990-00-00 Churchill, Mt803--Summit area of Mount ChurchillLarge pumice blocks of WRA were broken into smaller pieces using a clean rock hammer and then lightly crushed with a mortar and pestle. Both the crushed pumice and finer grained tephra samples were sieved to between 0.25 and 0.125 mm and then separated using magnetic methods. The resulting glass was mounted in epoxy blocks and polished. 35-40 cm pumice block; note sample previously analyzed as whole-rock by Richter et al. (1995).90ADg-2Tephra FallCumulateGlass 74.53 0.15 14.3 1.34 0.06 0.32 1.72 3.99 3.3 9121EMP1.34Cl=0.33; H2O=1.81EMP 1.3 59.2 1104 542 26.3 37.8 4.34 17 2.87 0.56 2.51 0.28 1.95 0.29 0.96 0.2 0.81 0.18 8.97 191 7.33 5.43 0.67 20 8.7 2.5 9121ICPMS

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
90ADg-261.4028-141.7003McGimsey, R. G.1990-00-00 Churchill, Mt803--Summit area of Mount ChurchillLarge pumice blocks of WRA were broken into smaller pieces using a clean rock hammer and then lightly crushed with a mortar and pestle. Both the crushed pumice and finer grained tephra samples were sieved to between 0.25 and 0.125 mm and then separated using magnetic methods. The resulting glass was mounted in epoxy blocks and polished. 35-40 cm pumice block; note sample previously analyzed as whole-rock by Richter et al. (1995).90ADg-2Tephra FallCumulateWhole-rock 67 0.43 16.4 1.4 0.05 1.38 4.23 4.21 2.54 0.14 98.731474XRF1.551.4CO2=0.04; H2OM=0.13; H2OP=0.49RAPIDA

SAMPLE LOCATION

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