Gif-1117. Kerveo, Plomelin, Finistere 300 B.C. 1300 B.C
[RADIOCARBON, VOL. 13, No. 2, 1971, P. 213-254] GIF NATURAL RADIOCARBON MEASUREMENTS VI G. DELIBRIAS, M. T. GUILLIER, and J. LABEYRIE Centre des Faibles Radioactivites, Centre National de la Recherche Scientifique, (91) Gif-sur-Yvette, France 'This list consists mainly of dates obtained from analysis during 1967 and 1968 of archaeologic and geologic samples. The last section deals essentially with climatic, palynologic, and sea level variation problems. All measurements of atmospheric CO2 made periodically from 1962 until end of 1970 are also published here. In agreement with international convention, all dates have been calculated on the basis of the C'4 half- life of 5568 years and 95% of NBS oxalic acid as the modern reference year. ACKNOWLEDGMENTS Thanks are due to Mireille Rousseau for routine sample prepara- tion and regular atmospheric CO, collection, and to Jean-Pierre Gamier for his valuable technical assistance. SAMPLE DESCRIPTIONS I. ARCHAEOLOGIC SAMPLES A. France 1. W. France 2120 ± 110 Gif-1117. Kerveo, Plomelin, Finistere 170 B.C. Charcoal from Iron age souterrain, Kerveo, Plomelin (47° 55' N Lat, 4° 10' W Long), Finistere. Coll. and subm. 1967 by P. R. Giot, Fac. Sci., Rennes. Comment: assoc. ceramics belong to La T'ene I period. Date is slightly too young (Giot, 1969; Giot and Ducouret, 1968). 2250 ± 100 Gif-812. Mesperleuch, Plouhinec, Finistere 300 B.C. Charcoal from salt-pan brickworks of Iron age, in a clayey block, at Mesperleuch, Plouhinec (48° 00' N Lat, 4° 30' W Long), Finistere. Coll, and subm. 1967 by P. L. Gouletquer, Fac. Sci. Rennes. Comment: in good agreement (Gouletquer, 1967, 1970; Giot, 1968).
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