AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > UT1714

SAMPLE INFO : UT1714
Sample ID:UT1714
Station ID:NK26B
Latitude:68.0875
Longitude:-158.4772
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
4 cm thick. Small pods of tephra within dark brown, organic-rich silt with many cobbles and some peaty patches. These flood-plain deposits fill depressions on the surface of underlying gravel (unit 5 of Elias et al., 1999) and are overlain by glaciolacustrine stony mud (unit 6 of Elias et al., 1999).

References:
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory
Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6

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
NK26B68.0875-158.4772Unknown, Unknown 124000 ± 10000 known unit; 10271; Age is approximate. Revised glass fission-track age with re-calibration; four Old Crow Tephra sample glass fission-track ages (UT1434, UT613, UT501, UT613).Noatak River, Alaska. Datum not specified, assumed to be NAD83. 4 cm thick. Small pods of tephra within dark brown, organic-rich silt with many cobbles and some peaty patches. These flood-plain deposits fill depressions on the surface of underlying gravel (unit 5 of Elias et al., 1999) and are overlain by glaciolacustrine stony mud (unit 6 of Elias et al., 1999).UT1714Tephra FallCumulateGlass 75.41 0.33 13.08 1.7 0.06 0.28 1.48 3.66 3.72 10271EMP1.7Cl=0.28; H2O=4.07EMP 4.29 101 1015 136 25.3 52.9 5.96 24.3 5.72 1 5.18 0.96 5.54 1.32 3.59 0.56 3.82 0.57 34.8 251 6.76 9.66 3.95 5.88 10271ICPMS

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/samples/sample_info.php
Page modified: August 1, 2017 15:29
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.