A geochemical constraint on the formation process of a manganese carbonate nodule in the siliceous mudstone of the Jurassic accretionary complex in the Mino Belt, Japan

Ce(III) and Ce(IV) (re)distribution and fractionation in a laterite profile from Madagascar: Insights from in situ XANES spectroscopy at the Ce LIII-edge

“…This underestimation was attributed to post-depositional Ce(IV) reduction with no alteration of the primary REE pattern of the sediments. Nakada et al (2014) showed similar discrepancy in siliceous mudstone and Mn carbonate nodule which exhibited a positive Ceanomaly while XANES indicated the absence of Ce(IV).…”