University of Wisconsin Radiocarbon Dates IX
- 1 January 1971
- journal article
- research article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 13 (2) , 475-486
- https://doi.org/10.1017/s0033822200008584
Abstract
Radiocarbon dates obtained since December, 1969, are summarized here. Procedures and equipment have been described previously (R., 1966, v. 8, p. 522). Wood, charcoal, and peat samples are pretreated with dilute NaOH and dilute H3PO4 before conversion to the counting gas, methane; marls and lake cores are treated with acid only. Very calcareous materials are treated with HCl instead of H3PO4.Keywords
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