典型文献
Limited Contribution of Preferential Dissolution to Radiogenic Uranium Isotope Disequilibrium Observed in Weathered Moraines
文献摘要：
Radiogenic uranium isotope disequilibrium (234U/238U) has been used to trace a variety of Earth surface processes, and is usually attributed to direct recoil of 234Th and preferential dissolution of radioactively damaged lattices at the mineral surface. However, the relative contribution of these two mechanisms in the natural environment remains unresolved, making it hard to use the extent of dis- equilibrium to quantify processes such as weathering. This study tests the contribution of preferential dissolution using well-characterized weathered moraines and river sediments from the southeastern Ti- betan Plateau. The observations show that weathering of recent moraines where the contribution from direct recoil is negligible and is not associated with depletion of 234U at the mineral surface. It suggests a limited role for preferential dissolution in this setting. We attribute this lack of preferential dissolution to a near-to-equilibrium dissolution at the weathering interfaces, with little development of etch pits as- sociated with radioactively damaged energetic sites.
文献关键词：
中图分类号：
作者姓名：
Laifeng Li;Laura F.Robinson;Tianyu Chen;Zhewen Xu;Jun Chen;Gaojun Li
作者机构：
MOE Key Laboratory of Surficial Geochemistry,Department of Earth and Planetary Sciences,Nanjing University,Nanjing 210023,China;School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China;Frontiers Science Center for Critical Earth Material Cycling,Nanjing University,Nanjing 210023,China;School of Earth Sciences,University of Bristol,Bristol BS81RJ,UK
文献出处：
引用格式：
[1]Laifeng Li;Laura F.Robinson;Tianyu Chen;Zhewen Xu;Jun Chen;Gaojun Li-.Limited Contribution of Preferential Dissolution to Radiogenic Uranium Isotope Disequilibrium Observed in Weathered Moraines)[J].地球科学学刊（英文版）,2022(01):57-66
A类：
Radiogenic,Disequilibrium,Weathered,Moraines,234Th,radioactively,betan
B类：
Limited,Contribution,Preferential,Dissolution,Uranium,Isotope,Observed,uranium,isotope,disequilibrium,234U,238U,has,been,used,trace,variety,Earth,surface,processes,usually,attributed,direct,recoil,preferential,dissolution,damaged,lattices,mineral,However,relative,contribution,these,two,mechanisms,natural,environment,remains,unresolved,making,hard,extent,quantify,such,weathering,This,study,tests,using,well,characterized,weathered,moraines,river,sediments,from,southeastern,Ti,Plateau,observations,show,that,recent,where,negligible,not,associated,depletion,It,suggests,limited,role,this,setting,lack,near,interfaces,little,development,etch,pits,energetic,sites
AB值：
0.543981
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
