Use of Organic Temper for Carbon 14 Dating in Lowland South America

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Abstract
Experimental work has demonstrated the practicality of extracting sufficient organic carbon for Carbon 14 dating from sherds tempered with crushed charcoal sponge spicules (cauixi), and siliceous bark (cariapé). The sherds were from ceramic complexes on the Napo, Orinoco, and Amazon Rivers that had been stratigraphically excavated and could be cross-checked.