OxCal > Calibration Curves

Calibration Curves



Atmospheric Curves

The main curves recommended for calibration are:

For comparison with older calibrations the following are also included:

For post-bomb results the function R_F14C() should be used which uses results in the form of F14C as defined by Reimer et al. 2004. As a default OxCal works on a resolution of 0.2yr with such data. To obtain results similar to those for the non-smoothed curve in CALIBomb (Reimer et al. 2004), you should set the resolution to 0.01. For many purposes you should consider adding a Reservoir time constant in this time period as even short-lived plants grow over several months.


Marine Curves

The recommended marine curve is:

For marine calibrations you will need to find an appropriate ΔR offset from the CHRONO Marine Reservoir Database.

For comparison with older calibrations the following are also included: