Avenue De La Terrasse, 91198-Gif-Sur-Yvette Cedex, France This List Is Part of a Program of Publishing Our Large Backlog of Unpub- Lished Dates
Gif Natural Radiocarbon Measurements XI Item Type Article; text Authors Delibrias, Georgette; Guillier, Marie-Therese Citation Delibrias, G., & Guillier, M.-T. (1988). Gif natural radiocarbon measurements XI. Radiocarbon, 30(1), 61-124. DOI 10.1017/S0033822200043952 Publisher American Journal of Science Journal Radiocarbon Rights Copyright © The American Journal of Science Download date 27/09/2021 12:07:01 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/653002 [RADIOCARBON, VOL 30, No. 1, 1988, P 61-124] GIF NATURAL RADIOCARBON MEASUREMENTS XI GEORGETTE DELIBRIAS and MARIE-THERESE GUILLIER Centre des Faibles Radioactivites, Laboratoire Mixte CNRS-CEA Avenue de la Terrasse, 91198-Gif-sur-Yvette Cedex, France This list is part of a program of publishing our large backlog of unpub- lished dates. The dates listed here, from 1974 to 1979, include archaeo- logic samples from various cultures and countries and geologic samples related to sea-level variations, volcanism, and especially the history of pa- leolakes in Africa. Ages are calculated according to the Libby half-life of 5570 ± 30 years. The recent standard is 95% of the 14C activity of oxalic acid, referring to 1950. All ages are given in years before present (AD 1950). Corrections for isotopic fractionations are made only when b13C values are given. The marine shells in our present and previous lists are corrected for reservoir effect of ca 400 yr, since there is no systematic isotopic correc- tion. For lascustrine shells and carbonate formations corrections are more complex, and were performed when 5'3C values were available.
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