Assessing trace-element mobility during alteration of rhyolite tephra from the Dinaride Lake System using glass-phase and clay-separate laser ablation inductively coupled plasma mass spectrometry

Abstract This paper reports a novel approach in the study of trace-element mobility during argillization volcanic glass that is based on situ laser ablation inductively coupled plasma mass spectrometry analyses and spatially related illite-smectite collected form fraction separates. The material studied originates from lacustrine sediments Dinaride Lake System bear evidence intensive weathering distal tephra Miocene climatic optimum. Yttrium HREE were probably mobilized decomposing carbonate complexes consequently depleted significantly clays studied. On other hand, Mg-rich demonstrates an elevated adsorption potential solvated LREE complexes. may be explained through clay surface geochemistry controlled largely by Mg for Al octahedral substitution. highlights role eogenetic 2:1 aluminosilicates that, under favourable geological conditions, conducive to secondary REE enrichment formation ion adsorption-type deposits.