Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-19T06:05:01.297Z Has data issue: false hasContentIssue false

Instituto Venezolano De Investigaciones Cientificas Natural Radiocarbon Measurements VII

Published online by Cambridge University Press:  18 July 2016

M. A. Tamers*
Affiliation:
Department of Chemistry, Institute Venezolano de Investigaciones Científicas, Caracas, Venezuela
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The samples reported in this date list were processed during 1970. Alter preliminary sample treatments including carbonates and rootlet removal, a complete benzene synthesis was made. This liquid serves as the solvent in a liquid scintillation spectrometer, using a modified 4cc: counting vessel; 2.42g of carbon are counted with a 64% efficiency. The background is constant at 6.8 cpm.

Type
Research Article
Copyright
Copyright © The American Journal of Science 

References

Clarke, R. S. et al., 1970, The Allende, Mexico meteorite shower: Smithsonian contr. to Earth Sci., no. 5, p. 153.CrossRefGoogle Scholar
Clarke, R. S. Jr., Jarosewich, Eugene, and Nelen, Joseph, 1971, The Lost City, Oklahoma, meteorite: an introduction to its laboratory investigation and comparison with Pribram and Ucera: Jour. Geophys. Research, in press.Google Scholar
Crane, H. R. and Griffin, J. B., 1962, University of Michigan radiocarbon dates VII: Radiocarbon, v. 4, p. 183203.Google Scholar
Cruxent, J. M. and Rouse, Irving, 1969, Early man in the West Indies: Sci. American, v. 221, no. 5, p. 4252.CrossRefGoogle Scholar
Herrera, R. and Tamers, M. A., 1971, Radiocarbon dating of tropical soil associations in Venezuela: Internatl. Soil Sci. Soc. Paleopedology, p. 109115.Google Scholar
Piña Chán, Roman, 1958, Tlatilco: Ser. invest. no. 1, Inst. Nac. Antropol. Historia, Mexico.Google Scholar
Raynaud, D. and Tamers, M. A., 1971, Teneurs en radiocarbone de l'asphalte naturel du lac de Guanoco (Venezuela): Acad. sci. [Paris] Comptes rendus, v. 173D, p. 16601663.Google Scholar
Rouse, Irving and Cruxent, J. M., 1963, Venezuelan archaeology: New Haven, Yale Univ. Press.Google Scholar
Scharpenseel, H. W. and Pietig, F., 1969, Altersvestimmung von Böden durch die Radiokohlenstoffdatierungsmethode III. Böden mit Bt-Horizont und fossile Schwarzerden: Pflanzenernährung Bodenkunde Zeitschr., v. 122, p. 145152.Google Scholar
Scharpenseel, H. W. et al., 1968, Altersbestimmung von Böden durch die Radiokohlenstoffdatierungsmethode. I. Methode und verhandene 14C Daten: Pflanzenernährung Bodenkunde Zeitschr., v. 119, p. 3444.Google Scholar
Schubert, Carlos and Sifontes, R. S., 1970, Bocono Fault, Venezuelan Andes: Evidence of postglacial movement: Science, v. 170, p. 6669.Google Scholar
Tamers, M. A., 1963, Détermination des sections éfficaces de quelques réactions nucléaires intervenant dans les effets du rayonnement cosmique. CEA rept., v. 2298, p. 161.Google Scholar
Tamers, M. A., 1966, Instituto Venezolano de Investigaciones Cientificas natural radiocarbon measurements II: Radiocarbon, v. 8, p. 204212.Google Scholar
Tamers, M. A., 1967, Radiocarbon ages of ground water in an arid zone unconfined aquifer: Am. Geophys. Union, v. 11, p. 143152.Google Scholar
Tamers, M. A., 1969, Instituto Venezolano de Investigaciones Científicas natural radiocarbon measurements IV: Radiocarbon, v. 11, p. 396422.CrossRefGoogle Scholar
Tamers, M. A., 1970, Instituto Venezolano de Investigaciones Científicas natural radiocarbon measurements V: Radiocarbon, v. 12, p. 509525.Google Scholar
Tamers, M. A., 1971, Instituto Venezolano de Investigaciones Científicas natural radiocarbon measurements VI: Radiocarbon, v. 13, p. 3244.Google Scholar
Taylor, R. E. and Berger, Rainer, 1967, Radiocarbon content of marine shells from the Pacific coasts of Central and South America: Science, v. 158, p. 11801182.CrossRefGoogle ScholarPubMed