Applied Magnetic Resonance

, Volume 13, Issue 3–4, pp 561–569 | Cite as

ESR study of thermal history and dating of a stone tool

  • A. Tani
  • J. Bartoll
  • M. Ikeya
  • K. Komura
  • H. Kajiwara
  • S. Fujimura
  • T. Kamada
  • Y. Yokoyama
Article

Abstract

Electron spin resonance (ESR) of Fe3+ ions and of radiation-induced centers in quartz (E’, peroxy and Al centers) was studied to distinguish between burnt and unburnt stone tools and to determine their age. The yellow stone tool with a reddish edge discovered at the paleolithic site in Kamitakamori, northern Japan, was investigated. The ESR spectrum intensity of Fe3+ ions around g=4.3 and the color of the material changed at 600°C and 240°C, respectively, which indicates that the red part was heated at 240–600°C. The E′ center in the red part was used for dating because isochronal annealing experiments showed low thermal stability of the Al center and overlap of broad signals at g=2.0086 onto the peroxy center. Assuming the same efficiency of defect formation in the red part as of that in the laboratory-heated material at 450°C, the obtained age of 520–770 ka is in concordance with the ages of the tephra layers at the site.

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Copyright information

© Springer 1997

Authors and Affiliations

  • A. Tani
    • 1
  • J. Bartoll
    • 1
  • M. Ikeya
    • 1
  • K. Komura
    • 2
  • H. Kajiwara
    • 3
  • S. Fujimura
    • 4
  • T. Kamada
    • 4
  • Y. Yokoyama
    • 4
  1. 1.Department of Earth and Space ScienceOsaka UniversityToyonaka, OsakaJapan
  2. 2.Low Level Radioactivity LaboratoryKanazawa UniversityTatsunokuchi, IshikawaJapan
  3. 3.Tohoku Fukushi UniversitySendai, MiyagiJapan
  4. 4.Tohoku Paleolithic InstituteTagajo, MiyagiJapan

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