ESR dating of barite in sulphide deposits formed by the sea-floor hydrothermal activities

Shin Toyoda; Taisei Fujiwara; Ai Uchida; Jun-ichiro Ishibashi; Shun'ichi Nakai; Asako Takamasa

doi:10.1093/rpd/ncu136

ESR dating of barite in sulphide deposits formed by the sea-floor hydrothermal activities

Radiat Prot Dosimetry. 2014 Jun;159(1-4):203-11. doi: 10.1093/rpd/ncu136. Epub 2014 May 2.

Authors

Shin Toyoda¹, Taisei Fujiwara², Ai Uchida², Jun-ichiro Ishibashi³, Shun'ichi Nakai⁴, Asako Takamasa⁵

Affiliations

¹ Okayama University of Science, Okayama, Japan toyoda@dap.ous.ac.jp.
² Okayama University of Science, Okayama, Japan.
³ Kyushu University, Fukuoka, Japan.
⁴ Earthquake Research Institute, University of Tokyo, Tokyo, Japan.
⁵ National Institute of Radiological Sciences, Chiba, Japan.

PMID: 24795384
DOI: 10.1093/rpd/ncu136

Abstract

Barite is a mineral newly found to be practically useful for electron spin resonance (ESR) dating of sulphide deposits formed by the sea-floor hydrothermal activities. The recent studies for the properties of the ESR dating signal in barite are summarised in the present paper as well as the formulas for corrections for accurate dose-rate estimation are developed including the dose-rate conversion factors, shape correction for gamma-ray dose and decay of (226)Ra. Although development of the techniques for ESR dating of barite has been completed, further comparative studies with other dating techniques such as U-Th and (226)Ra-(210)Pb dating are necessary for the technique to be widely used.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Barium Sulfate / chemistry*
Barium Sulfate / radiation effects
Electron Spin Resonance Spectroscopy / methods*
Fossils*
Gamma Rays
Oceans and Seas*
Radiation Dosage
Radiometric Dating / methods*
Sulfides / chemistry*
Sulfides / radiation effects
Temperature

Substances

Sulfides
Barium Sulfate