There are two possible reservoir corrections applied to a radiocarbon date for marine carbonates – the localized reservoir correction (DeltaR / DeltaRErr) and the global marine reservoir correction. The former is provided by the client to the lab before the analyses while the latter is part of the calibration program.
What if there are several materials found in sediment (e.g. wood, charcoal, seeds) but each one does not meet the lab’s minimum sample size requirement, can a mixture of materials be dated?
