Rev 7.0: What's changed from Rev 6.0
A new calibration curve for the conversion of radiocarbon ages
to calibrated (cal) ages has been constructed and internationally
ratified to replace IntCal09 which extended from 0-50 ka cal
BP (Before Present, 0 cal BP = AD 1950). The new calibration dataset
for terrestrial samples also extends from 0-50 ka cal BP.