跳到主要导航 跳到搜索 跳到主要内容

Uranium isotopic study of aragonite-calcite stalagmites: Implications for uranium-series dating

  • Y. Yang
  • , D. X. Yuan
  • , J. M. Qin
  • , Y. S. Lin
  • , M. L. Zhang
  • , X. Y. Zhu
  • , H. Cheng
  • , R. L. Edwards
  • Southwest University
  • MLR
  • University of Minnesota Twin Cities

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

This paper focuses on the relationship between re-crystallization and erroneous U-series dating based on 82 precise ICP-MS 230Th data collected during analysis of two big stalagmites. Aragonite is susceptible to conversion to calcite with major loss of chemical elements during recrystallization, a process induced by drip water infiltration. Conversion of aragonite to calcite leads to errors in dating, resulting in false apparent ages. Because 230Th dating assumes that all changes in isotope ratios are the result of radioactive decay and ingrowth within a closed system (no chemical/diagenetic shifts in isotope ratios), the effects of recrystallization must be considered.

源语言英语
主期刊名Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
821-825
页数5
出版状态已出版 - 2007
已对外发布
活动12th International Symposium on Water-Rock Interaction, WRI-12 - Kunming, 中国
期限: 31 7月 20074 8月 2007

出版系列

姓名Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
1

会议

会议12th International Symposium on Water-Rock Interaction, WRI-12
国家/地区中国
Kunming
时期31/07/074/08/07

学术指纹

探究 'Uranium isotopic study of aragonite-calcite stalagmites: Implications for uranium-series dating' 的科研主题。它们共同构成独一无二的指纹。

引用此