AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Introduction | Reference Search | Glossary 
You are here: Home > Library > Age of Sheep Creek Tephra (Pleistocene) in central Alaska from thermoluminescence dating of bracketing loess

citation imageBerger, G. W., Pewe, T. L., Westgate, J. A., and Preece, S. J., 1996, Age of Sheep Creek Tephra (Pleistocene) in central Alaska from thermoluminescence dating of bracketing loess: Quaternary Research, v. 45, n. 3, p. 263-270.

DATA TABLES *Not all tables in a publication may be listed. Not all tables from a publication have data entered in the database.
3671: Major-Element Composition (Weight Percent) of Glass in Sheep Creek Tephra at Occurrences in the Fairbanks Area, Alaska
View table data :: Download table data (.csv)
* Note. Major elements in glass determined on an ETEC energy dispersive microprobe operating at 20 keV accelerating voltage, 1–2 mm beam diameter, and 50–60 nAmp beam current. Standardization using mineral and glass standards. Mg, Mn, and Cl concentrations below detection limit. Analyses recalculated to 100% to remove effects of variable hydration. A-One standard deviation is given. See Figure 2 for location of sites. B-Total iron as FeO. C-H2O by difference. ‘‘n’’ is number of analyses. *
3681: Major- and Trace-Element Composition of Glass Shards in Old Crow Tephra at Upper Eva Creek Locality, Fairbanks, Alaska (a)
View table data :: Download table data (.csv)
* (a) Microprobe operating conditions and other traits as specified in Table 1. Average MgO concentration is 0.27 +/- 0.06 wt.% but this oxide was not detected during analysis of UT828. H2O (by difference) for UT828 is 5.0 +/- 1.0 wt.%. Trace-element concentrations determined by INAA following the methods of Barnes and Gorton (1984). See Figure 6 for stratigraphic position of Old Crow tephra in relation to Sheep Creek tephra. *

Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/downloads/reference.php
Page modified: February 16, 2017 16:07
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.