14C Template The 14C Template File shows the minimum information required by ACE to import 14C samples, and lists a single sample (05ORN-04) for example purposes. Using Excel or Openoffice you can add rows to this file using units given here. Additional sample attributes (for example erosion, or tectonic uplift rate) can also be added for each sample as additional columns. Optional sample attributes are listed here, to use them you must add the variable name in the header exactly as listed. When ready to import into ACE, save as a Windows CSV file.
The dataset is from Miller et al., 2006, ‘Limited ice-sheet erosion and complex exposure histories derived from in situ cosmogenic 10Be, 26Al and 14C on Baffin Island, Arctic Canada’, Quaternary Geology (link). It is part of the multiple nuclide study, with more data in the ‘Multiple Nuclide Data’ Section.
Lifton et al., 2001, ‘A new extraction technique and production rate estimate for in situ cosmogenic 14C in quartz’, Geochimica et Cosmochimica Acta (link). This dataset contains independent age, but is not recommend for use as a calibration dataset, as the inventory of sample PP-4 has by more recent extraction techniques found to be about 7% lower than reported in this database (Miller et al., 2006). They are included here to test the role of calibration data in 14C analysis, and should not be used to date samples. The dataset contains three saturated samples, Boundary Peak, Nevada (BPNv), Mt. Whitney, California (MtWCa) and White Mountain, California (WMtCa) originally from Donahue et al. 1990. For the time stepping code calibration samples in ACE require an independent age, so for these samples we have assigned ages of 100 kyr.