Regional differences in atmospheric radiocarbon due to latitude and elevation
- Category:
- Tree-Ring Talk
- Starts at:
- 12:00PM Wednesday April 02, 2008
- Ends at:
- 01:00PM Wednesday April 02, 2008
- Venue:
- Math East/Tree-Ring West (Bldg 45), Room 20
- Speaker:
- Susana E. González
- Affiliation:
- University of Arizona, Physics Department
- Description:
- Small differences in radiocarbon results from coeval samples taken from various latitudes and elevations may increase the error in the ages assigned to archaeological samples. In this study we compare Delta 14C in tree rings from seven latitudes within the North American continent, with the most northern site located in Canada (64 ºN, 104ºW) and the most southern site located in Mexico (23ºN, 105ºW). In order to monitor the differences that may have been produced across latitude and elevation, we used accelerator mass spectrometry to measure five-year blocks of tree rings at ca. ± 2.5? precision to test whether measurable differences exist in radiocarbon in trees. This test was carried out for 10 different time periods between AD 1635 to 1980.
- Last updated:
- Wed Jan 30 09:31:44 -0700 2008
