Possible isotopic fractionation of argon in source obsidians and archeological artifacts from Kulkuletti, Ethiopia

Journal of Archaeological Science

Volumn 36, Issue 10, 2009, Pages 2119-2124

  Brown, Francis H ^a   Reid, Charles ^a   Negash, Agazi ^a  

^a UNIVERSITY OF UTAH   (United States)

Author keywords

40Ar 39Ar dating; Ethiopia; Gademotta; Isotopic fractionation; Kulkuletti; Middle stone age; Obsidian

Indexed keywords

ARCHAEOLOGICAL EVIDENCE; ARGON ISOTOPE; ARGON-ARGON DATING; ARTIFACT; CHEMICAL ANALYSIS; DIFFUSION; GEOCHEMISTRY; ISOTOPIC FRACTIONATION; OBSIDIAN; STONE AGE;

AFRICA; EAST AFRICA; ETHIOPIA; SUB-SAHARAN AFRICA;

EID: 68349093950     PISSN: 03054403     EISSN: 10959238     Source Type: Journal    
DOI: 10.1016/j.jas.2009.05.008     Document Type: Article

References (8)

1. Bodoia J.R., and Osterle J.F. The development of free convection between heated vertical plates. Journal of Heat Transfer 84 (1962) 40-44
2. Kettleborough C.F. Transient laminar free convection between heated vertical plates including entrance effects. International Journal of Heat and Mass Transfer 15 (1972) 883-896
3. Kobayashi N., Shibata A., and Yamamoto I. Numerical solution of argon 36-38-40 concentration profiles within thermal diffusion column. Journal of Nuclear Science and Technology 33 (1996) 781-786
4. 39Ar ages from the Ethiopian rift. Geolocy 36 (2008) 967-970
5. Negash A., and Shackley M.S. Geochemical provenance of obsidian artifacts from the MSA site of Porc Epic, Ethiopia. Archaeometry 48 (2006) 1-12
6. Steiger R.H., and Jäger E. Subcommission on geochronology: convention on the use of decay constants in geo- and cosmochronology. Earth Planetary Science Letters 36 (1977) 359-362 1977
7. 39Ar dating: a provenance study of middle stone age obsidian tools from Ethiopia. Journal of Archeological Science 33 (2006) 1749-1765
8. Wendorf F., Laury R.L., Albritton C.C., Schild R., and Haynes C.V. Dates for the middle stone age of East Africa. Science 187 (1975) 740-742