AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > UT613

SAMPLE INFO : UT613
Sample ID:UT613
Station ID:UT613
Latitude:61.708
Longitude:-157.067
Datum:NAD83
Sample Type 1:Tephra Fall
 Text Description:
From Preece et al. (2011): 35 to 45 cm thick. Tephra in periglacial fining-upward sand and silt aeolian unit that overlies distal outwash deposit and underlies a reworked, slightly organic to peaty silt deposit. It is weakly laminated to massively bedded within massive loess near top of eolian unit. Ice-wedge casts are located at the top of aeolian unit and locally deform OCt
(Waythomas et al., 1993).

References:
Isothermal plateau fission-track age of the late Pleistocene Old Crow Tephra, Alaska
Quaternary geology and late-Quaternary environments of the Holitna Lowland and Chuilnuk-Kiokluk Mountains region, interior southwestern Alaska
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
Trace-element analysis of volcanic glass shards by laser ablation inductively coupled plasma mass spectrometry: application to tephrochronological studies
A 3-my record of Pliocene-Pleistocene loess in interior Alaska
Isothermal plateau fission-track ages of hydrated glass shards from silicic tephra beds

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
UT61361.708-157.067Westgate, J. A. 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).Holitna area, Alaska. Coordinates reported in Preece et al. (2011) vary slightly.From Preece et al. (2011): 35 to 45 cm thick. Tephra in periglacial fining-upward sand and silt aeolian unit that overlies distal outwash deposit and underlies a reworked, slightly organic to peaty silt deposit. It is weakly laminated to massively bedded within massive loess near top of eolian unit. Ice-wedge casts are located at the top of aeolian unit and locally deform OCt (Waythomas et al., 1993).UT613Tephra FallCumulateGlass 75.99 0.29 12.96 1.62 1.49 3.72 3.65 2740EMP1.62Cl=0.28; H2O=5.45EMP 3.42 74 969 104 25 53 6.6 24 5.2 0.94 5.93 0.95 5.62 1.23 3.46 0.54 3.95 0.68 26 233 8.6 7.2 0.71 23 10.6 4.67 9 10621LA-ICP: Cs, Rb, Ba, Sr, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Zr, Nb, Hf, Ta, Pb, Th, U, Ga; INAA: Ce;
UT61361.708-157.067Westgate, J. A. 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).Holitna area, Alaska. Coordinates reported in Preece et al. (2011) vary slightly.From Preece et al. (2011): 35 to 45 cm thick. Tephra in periglacial fining-upward sand and silt aeolian unit that overlies distal outwash deposit and underlies a reworked, slightly organic to peaty silt deposit. It is weakly laminated to massively bedded within massive loess near top of eolian unit. Ice-wedge casts are located at the top of aeolian unit and locally deform OCt (Waythomas et al., 1993).UT613Tephra FallCumulateGlass 75.46 0.27 13.06 1.75 0.06 0.29 1.48 3.66 3.7 10271EMP1.75Cl=0.27; H2O=5.25EMP 1.8 79 1044 23.6 52 27 5.36 0.87 0.89 3.5 0.58 7 0.8 9.7 3.73 6.58 3.5 55 2740INAA
UT61361.708-157.067Westgate, J. A. 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).Holitna area, Alaska. Coordinates reported in Preece et al. (2011) vary slightly.From Preece et al. (2011): 35 to 45 cm thick. Tephra in periglacial fining-upward sand and silt aeolian unit that overlies distal outwash deposit and underlies a reworked, slightly organic to peaty silt deposit. It is weakly laminated to massively bedded within massive loess near top of eolian unit. Ice-wedge casts are located at the top of aeolian unit and locally deform OCt (Waythomas et al., 1993).UT613Tephra FallCumulateGlass 75.99 0.29 12.96 1.62 1.49 3.68 3.65 1698EMP: SiO2, TiO2, Al2O3, FeOT, CaO, K2O; INAA: Na2O; 1.881.62Cl=0.28; H2O=5.45EMP 1040 23.6 52 27 5.36 0.87 0.89 3.4 0.58 7 0.8 9.7 3.7 6.6 1698INAA
UT61361.708-157.067Westgate, J. A. 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).Holitna area, Alaska. Coordinates reported in Preece et al. (2011) vary slightly.From Preece et al. (2011): 35 to 45 cm thick. Tephra in periglacial fining-upward sand and silt aeolian unit that overlies distal outwash deposit and underlies a reworked, slightly organic to peaty silt deposit. It is weakly laminated to massively bedded within massive loess near top of eolian unit. Ice-wedge casts are located at the top of aeolian unit and locally deform OCt (Waythomas et al., 1993).UT613Tephra FallCumulateGlass Cl=0.28; H2O=5.45EMP 4.25 97 912 132 24.8 53.2 5.91 23.7 5.74 0.9 4.85 0.91 5.43 1.28 3.51 0.58 3.61 0.57 33.6 244 6.92 9.88 4.34 5.59 10271ICPMS

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: 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.