Extension of the southern hemisphere atmospheric radiocarbon curve, 2120-850 years BP: Results from tasmanian huon pine

Abstract

Decadal samples of dendrochronologically dated pine (Lagorostrobos franklinii) from the Stanley River basin, Tasmania, have been radiocarbon dated between 2120-850 yr BP. This data set overlaps and extends the current Southern Hemisphere record, which covers the period 110-995 yr BP. There is good agreement between the 2 records between 995-850 yr BP, between sample replicates and with consensus values for standards. As in the younger data set, we find evidence for a distinct but variable offset between the Southern Hemisphere data and IntCal04; although this is likely due to real temporal variability in the interhemispheric offset, further work is planned to rule out possible laboratory or sample preparation differences. © 2010 by the Arizona Board of Regents on behalf of the University of Arizona.