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SAMPLE INFO : S851D
Sample ID:S851D
Station ID:S851
Latitude:61.6
Longitude:-149.1
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Red-brown tephra that occurs approximately 90 cm below the surface. Above the tephra, which is 4 cm thick, is gray loess. The tephra sharply overlies the gray and tan mottled loess below it, that has significant iron staining. Overlies tephras S851E (50 cm below), F, and G. Note that one thin (0.5 cm), discontinuous tephra occurs 3 cm above this one, but was not sampled.

References:
Holocene tephrochronology of the Matanuska Valley, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Geologic 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
S85161.6-149.1Fontana, M. R.> 1450 ± 100 14C; 8881; Radiocarbon dated peat that occurs 60 cm below the surface and is two cm thick. All tephra in the stratigraphy at this station occurred below this peat.In the town of Palmer, Alaska, at the intersection of Beaver and Gloria streets. Two and a half m of loess exposed during foundation excavation for a housing development. Five tephra recorded in the stratigraphy at this location (one of which was a couplet), but only four were sampled. See Fontana (1988) for detailed stratigraphy. Coordinates provided as degrees/minutes and converted to decimal degrees; datum not provided, assumed to be NAD83. Red-brown tephra that occurs approximately 90 cm below the surface. Above the tephra, which is 4 cm thick, is gray loess. The tephra sharply overlies the gray and tan mottled loess below it, that has significant iron staining. Overlies tephras S851E (50 cm below), F, and G. Note that one thin (0.5 cm), discontinuous tephra occurs 3 cm above this one, but was not sampled. S851DTephra FallCumulateGlass 70.14 0.34 14.25 2.89 1.49 3.59 4.54 2.29 8881EMP2.89Cl=0.46EMP

SAMPLE LOCATION

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Page modified: August 1, 2017 15:29
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