AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > UT970

SAMPLE INFO : UT970
Sample ID:UT970
Station ID:Gold_Hill_II
Latitude:64.9
Longitude:-147.89997
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Pods of an orange, rhyolitic tephra, with a maximum thickness of 3 cm. Occurs interbedded with soliflucted tan (2.5Y6/3) silt with oxidation streaks. Mottled orange and white (7.5YR8/4), and it appears the orange color is secondary. Wisps of silt occur within the pods. Lower and upper contacts sharp to wispy. Vertical repetition indicates solifluction. Positioned just below the Ester Interval unconformity at trench 2 (Gold_Hill_II station). Sample not analyzed by Preece (1991) due to small sample size.

References:
Increases and fluctuations in thermal activity at Mount Wrangell, Alaska
Late Pliocene Dawson Cut forest bed and new tephrochronological findings in the Gold Hill Loess, east-central 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
Gold_Hill_II64.9-147.89997Preece, S. J. Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Pods of an orange, rhyolitic tephra, with a maximum thickness of 3 cm. Occurs interbedded with soliflucted tan (2.5Y6/3) silt with oxidation streaks. Mottled orange and white (7.5YR8/4), and it appears the orange color is secondary. Wisps of silt occur within the pods. Lower and upper contacts sharp to wispy. Vertical repetition indicates solifluction. Positioned just below the Ester Interval unconformity at trench 2 (Gold_Hill_II station). Sample not analyzed by Preece (1991) due to small sample size.UT970Tephra FallCumulateGlass 76.68 0.07 13.61 1.12 0.06 0.34 1.59 3.68 2.63 4792EMP1.12Cl=0.24; H2O=4.39EMP

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 G19AC00060 and G19AC00171.

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