U-series disequilibria in minerals from Gandak River sediments (Himalaya)
作者: Clio BosiaFrançois ChabauxEric PeltAntoine CogezPeter StilleEtienne DelouleChristian France-Lanord
作者单位: 1Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), EOST, Université de Strasbourg, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
2Centre de Recherches Pétrographiques et Géochimiques (CRPG), UPR 2300, CNRS-Université de Lorraine, 15 Rue de Notre Dame des Pauvres, 54501 Vandoeuvre les Nancy Cedex, France
3Institut des dynamiques de la surface terrestre, Faculté de Géosciences et Environnement, Université de Lausanne, 1015 Lausanne, Switzerland
刊名: Chemical Geology, 2018, Vol.477 , pp.22-34
来源数据库: Elsevier Journal
DOI: 10.1016/j.chemgeo.2017.11.026
关键词: U-series nuclidesMineralsSediment transfer timeNuclides fractionationHimalaya
英文摘要: Abstract(#br)The impact of mineralogical sorting on U-Th-Ra variations observed for the Ganga sediments in the Himalayan alluvial plain due to transport and deposition processes highlights the importance to better understand the U-series isotopic system in Himalayan minerals. For this purpose, U, Th, and Ra concentrations, along with 238 U– 234 U– 230 Th– 226 Ra radioactive disequilibria, were measured in several pure mineral fractions, i.e. monazite, zircon, titanite, ilmenite, rutile, garnet, magnetite, quartz, biotite and muscovite, separated from one bank sediment of the Gandak River (Ganga Basin). The data, obtained through a double digestion protocol in high-pressure and high-temperature vessels, confirm that U and Th concentrations and isotopic ratios of the sediments are mainly...
全文获取路径: Elsevier  (合作)
影响因子:3.154 (2012)

  • fractionation 分级
  • minerals 矿物
  • series 
  • transfer 转换