226ra-210pb and228ra-228th dating of barite in submarine hydrothermal sulfide deposits collected at the okinawa trough and the Southern Mariana trough

Ai Uchida, Shin Toyoda, Jun Ichiro Ishibashi, Shun’Ichi Nakai

研究成果: Chapter in Book/Report/Conference proceedingChapter

3 被引用数 (Scopus)

抄録

The226Ra-210Pb and228Ra-228Th ages were obtained for barite crystals in hydrothermal sulfide deposits taken at the Okinawa Trough and the Southern Mariana Trough. After calibrating the measurement systems with standard samples with pitchblende, it was confirmed that the U and Th concentrations obtained for GSJ samples are consistent with literature values. It was shown that radon does not escape from barite crystals extracted from hydrothermal sulfide deposits, which indicates that226Ra-210Pb dating method works for these barite crystals. Most of the226Ra-210Pb and228Ra-228Th ages are younger than ESR and U-Th ages, where this inconsistency would be explained by the mixture of the barite crystals with younger and older ages, formed by several hydrothermal events.

本文言語英語
ホスト出版物のタイトルSubseafloor Biosphere Linked to Hydrothermal Systems
ホスト出版物のサブタイトルTAIGA Concept
出版社Springer Japan
ページ607-616
ページ数10
ISBN(電子版)9784431548652
ISBN(印刷版)9784431548645
DOI
出版ステータス出版済み - 1 1 2015

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

フィンガープリント 「<sup>226</sup>ra-<sup>210</sup>pb and<sup>228</sup>ra-<sup>228</sup>th dating of barite in submarine hydrothermal sulfide deposits collected at the okinawa trough and the Southern Mariana trough」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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