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Hiroshima University Radiocarbon Dates II West and South Coasts of Sri Lanka

Published online by Cambridge University Press:  18 July 2016

Jinadasa Katupotha
Jinadasa Katupotha*
Affiliation:
Department of Geography, Hiroshima University, 1-1-89, Higashi Senda Machi, Naka-ku, Hiroshima 730, Japan
*
∗Present address: Department of Geography, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka
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Geologic samples for 14C age measurements were collected from the west, southwest and south coasts of Sri Lanka during October and November 1986. Sample points were leveled based on the Colombo datum level. Results presented below were obtained by liquid scintillation counting of methanol for coral and shell samples. Ages were measured from December 1986 to May 1987, at the Department of Geography, Hiroshima University, Radiocarbon Dating Laboratory, using the laboratory procedure described by Fujiwara and Nakata (1984). Sample preparation techniques were similar to those mentioned in the first list (Katupotha, 1988). The results are expressed in radiocarbon years relative to ad 1950 based on the Libby half-life of 5568 ± 30 years, using the new oxalic acid standard (SRM 4900C) as ‘modern’ (Stuiver, 1983).

Type
Date Lists
Information
Radiocarbon , Volume 30 , Issue 3 , 1988 , pp. 341 - 346
Copyright
Copyright © The American Journal of Science

References

Fujiwara, K and Nakata, T, 1984, Methanol liquid scintillation radiocarbon dating (I): Fac Lit Bull, Hiroshima Univ, v 44, p 120–134 (in Japanese with English abs).Google Scholar
Katupotha, J, 1988, Hiroshima University radiocarbon dates I: West and south coasts of Sri Lanka: Radiocarbon, v 30, no. 1, p 125–128.Google Scholar
Mergner, H and Scheer, G, 1974, The physiographic zonation and the ecological conditions of some Indian and Ceylon coral reefs: Internatl coral reef symposium, 2nd, Proc, Brisbane, v 2, p 30–42.Google Scholar
Stuiver, M, 1983, International agreements and the use of the new oxalic acid standard, in Stuiver, M and Kra, R S, eds, Internatl 14C conf, 11th, Proc: Radiocarbon, v 25, no. 2, p 793–795.Google Scholar