This work examines the ages of sambaquis through their deposits of malacological material. Its main objective is to implement a methodology to determine 14C in carbonate by its acid etching breakdown, releasing CO2 absorbed in Carbo-Sorb(r), forming carbamate, determined by liquid scintillation. The methodology consisted of absorbing an average of 0.60 g of carbon in 10 mL of Carbo-Sorb(r) and 10 mL more of Permafluor(r) as scintillation cocktail. A Packard TR-LSC 3170 liquid scintillation spectrometer was used and an elapsed time of 1,000 minutes was employed. Using glass vials, the...