AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > Preece_2000_Klondike_District_Little_Blanche_Creek

SAMPLE INFO : Preece_2000_Klondike_District_Little_Blanche_Creek
Sample ID:Preece_2000_Klondike_District_Little_Blanche_Creek
Station ID:Klondike_District_Regional_Tephra
Latitude:63.9
Longitude:-139.19998
Datum:NAD83
Sample Type 1:Tephra Fall
 Text Description:
Associated with sands and gravels, but the stratigraphic identity of the host sediments is uncertain. The composition reported here is the average of two samples: UT1054, UT1455. Type II beds have more crystals than type I beds, and the glass is mainly in the form of highly inflated pumice. Feldspar, orthopyroxene, and green amphibole are common with minor or trace amounts of red amphibole, clinopyroxene, iron-titanium oxides, apatite, and zircon.

References:
Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada
Field trip guide for the International Field Conference and Workshop on Tephrochronology and Volcanism

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
Klondike_District_Regional_Tephra63.9-139.19998Preece, S. J. Tephra preserved in the late Cenozoic deposits of the Klondike region, Yukon Territory. Preece et al. (2000) identify 12 regional beds from 41 individual tephra samples; Sandhu et al. (2001) and Westgate et al. (2001) provide additional data on tephra bed average glass compositions from the area. Preece et al. (2011) provide information and data on 50 distinctive tephra beds in the area. Glass geochemical data of samples here are averages calculated from analyses of multiple tephra correlated across different stratigraphic locations in the Klondike area. Individual sample IDs are noted in the sample descriptions. Note that tephra units only located in one stratigraphic section are not included here and are listed by individual sample ID (see Preece et al. 2000, footnotes of tables 2 and 3; Sandhu et al. 2001, footnote of table 1; Westgate et al. 2001 footnote of table 2; Preece et al. 2011, Tables 1 and 4).Associated with sands and gravels, but the stratigraphic identity of the host sediments is uncertain. The composition reported here is the average of two samples: UT1054, UT1455. Type II beds have more crystals than type I beds, and the glass is mainly in the form of highly inflated pumice. Feldspar, orthopyroxene, and green amphibole are common with minor or trace amounts of red amphibole, clinopyroxene, iron-titanium oxides, apatite, and zircon.Preece_2000_Klondike_District_Little_Blanche_CreekTephra FallCumulateGlass 76.47 0.19 13.67 1.13 0.04 0.3 1.55 3.77 2.86 990EMP1.13Cl=0.03; H2O=5.03EMP

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.