Combined conceptual model (V&P model) to correct groundwater radiocarbon age

An approach to groundwater radiocarbon correction (V&P model) based on characteristics of initial recharging water and C-13 mixing model is developed, which not only overcomes the input uncertainty of C-13 and C-14 from the unsaturated zone and open groundwater system, but also considers the probable dilution effects from carbonate dissolution in the closed groundwater system. The model is relatively simple and reasonable. The principles of choosing modern recharging groundwater are also referred. The model has been used to correct the radiocarbon groundwater age from the Minqin Basin, the North China Plain and has given the reasonable results.