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13-17 May 2013
Tucson, Arizona
US/Arizona timezone
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Additional analysis of dendrochemical data of Fallon, Nevada

Presented by Dr. Paul R. SHEPPARD on 15 May 2013 from 18:00 to 21:00
Type: Poster Presentation
Board #: 3


Previously reported dendrochemical data showed temporal variability in concentration of tungsten (W) and cobalt (Co) in tree rings of Fallon, Nevada, US. Since then, intertree variability was calculated for each measured element across trees within subsites and time periods. For W and Co, the metals of highest interest in Fallon, inter-tree variability was always higher within versus outside of Fallon. For calibration purposes, this entire analysis was repeated at a different town, Sweet Home, Oregon, which has a known tungsten-powder facility, and inter-tree variability of W in tree rings confirmed the establishment date of that facility. This research adds important new dimensions to dendrochemistry of point-source contamination by adding analysis of inter-tree variability to analysis of central tendency.


Location: DoubleTree
Room: Salon E

Primary authors