Genesis and evolution of regoliths: Evidence from trace and major elements and Sr-Nd-Pb-U isotopes

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• 作者：C. Moragues-Quiroga^a ; ^b ; ^{cristina.moragues@list.lu} ; J. Juilleret^a ; L. Gourdol^a ; E. Pelt^b ; T. Perrone^b ; A. Aubert^b ; G. Morvan^b ; F. Chabaux^b ; A. Legout^c ; ^{legout@nancy.inra.fr} ; P. Stille^b ; C. Hissler^a ; ^{christophe.hissler@list.lu}
• 关键词：Regolith ; Sr-Nd-Pb-U isotopes ; Trace elements ; Mineralogy ; Critical zone ; Periglacial coverbeds
• 刊名：CATENA
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：149
• 期：part_P1
• 页码：185-198
• 全文大小：1407 K
• 卷排序：149

文摘

We present a powerful approach to study polycyclic regolith systems evolution. Atmospheric deposition contributed 50% of Sr-Nd-Pb abundance in the upper regolith. Chamosite, Nb and TiO2 prove the impact of volcanic tephra in the upper regolith. 87Sr/86Sr and 143Nd/144Nd allow us to genetically link the regolith compartments. 234U/238U and REE reflect water table fluctuation impact on regolith weathering.