Abstract
Absolute electron spin resonance (ESR) ages of Pleistocene shells from Hiradoko and Uji shell beds in Noto Peninsula, Central Japan were deduced from the total absorbed dose of natural radiation (TD) and the internal and external radiation dose. The internal dose from inside the shell was assessed using the 238U, 232Th and K contents and newly developed theoretical equation of TD based on uranium-series disequilibrium in a finite medium. The external environmental radiation was measured by thermoluminescent dosimeter (TLD) of CaSO4(Tm). The ESR ages of around 120, 000 years for shells from both shell beds agreed fairly well with coral ages in the same shell beds determined with 230Th/234U dating (OMURA, 1980).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
