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SAMPLE INFO : Tannenbaum_1996_tephra_KC
Sample ID:Tannenbaum_1996_tephra_KC
Station ID:Kodiak Island Regional Tephra
Latitude:57.6
Longitude:-153.2
Datum:NAD83
Date Sampled:0000-00-00
Sample Type 1:Tephra Fall
Field Lithology:Dacite
Text Description:
Tephra KC is found in the eastern, western, and northern regions of the island. Located in five stratigraphic sections, (Tannenbaum_1996_PP-01, Tannenbaum_1996_KL-01, Tannenbaum_1996_CL-03, Tannenbaum_1996_OB-01, &Tannenbaum_1996_ OB-03), this unit is orange in color with an average thickness of 10 cm. Bracketing c14 dates from section Tannenbaum_1996_OB-01 give the unit a maximum age of 8360 +/- 90 yr BP and a minimum age of 7670 +/- 70 yr BP. In section Tannenbaum_1996_KL-01 tephra KC is a 15 cm thick, laterally continuous layer with 0-6 cm high discontinuous pods of identical tephra exposed in colluvium above. The tephra pods are likely to have been re-deposited by colluvial transport from the slopes above. Thickness of the eastern and western deposits (Tannenbaum_1996_PP-01, Tannenbaum_1996_KL-01, & Tannenbaum_1996_CL-03) average 15 cm and are much thicker than the 1-2 cm deposits to the north (Tannenbaum_1996_OB-01 & Tannenbaum_1996_OB-3). Individual samples: 94KOD023, 94KOD060, 94KOD067, 94KOD116, 94KOD151, 94KOD152.

References:
Holocene tephra stratigraphy on northern Kodiak Island, Alaska

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
Kodiak Island Regional Tephra57.6-153.2Tannenbaum, T. G.0000-00-00 Kodiak Island, Alaska. Regional tephra units identified from sixteen stratigraphic sections (with exposed tephra) from Karluk Lagoon, Campbell Lagoon, Onion Bay, Anton Bay, Middle Kalsin Bay, and Pasagshak Point. Glass compositions of samples from this section are averages calculated from analyses of multiple tephra correlated across different stratigraphic locations in the area. Individual sample IDs are noted in the sample descriptions. Generic station location selected on Kodiak Island.Tephra KC is found in the eastern, western, and northern regions of the island. Located in five stratigraphic sections, (Tannenbaum_1996_PP-01, Tannenbaum_1996_KL-01, Tannenbaum_1996_CL-03, Tannenbaum_1996_OB-01, &Tannenbaum_1996_ OB-03), this unit is orange in color with an average thickness of 10 cm. Bracketing c14 dates from section Tannenbaum_1996_OB-01 give the unit a maximum age of 8360 +/- 90 yr BP and a minimum age of 7670 +/- 70 yr BP. In section Tannenbaum_1996_KL-01 tephra KC is a 15 cm thick, laterally continuous layer with 0-6 cm high discontinuous pods of identical tephra exposed in colluvium above. The tephra pods are likely to have been re-deposited by colluvial transport from the slopes above. Thickness of the eastern and western deposits (Tannenbaum_1996_PP-01, Tannenbaum_1996_KL-01, & Tannenbaum_1996_CL-03) average 15 cm and are much thicker than the 1-2 cm deposits to the north (Tannenbaum_1996_OB-01 & Tannenbaum_1996_OB-3). Individual samples: 94KOD023, 94KOD060, 94KOD067, 94KOD116, 94KOD151, 94KOD152.Tannenbaum_1996_tephra_KC Tephra FallCumulateGlass 68.62 0.57 15.15 0.69 2.31 5.36 2.49 7823EMP4.63Cl=0.18EMP

SAMPLE LOCATION

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