Middle to Late Holocene mobilization of DOC-bound Pb and Y in the Magellanic moorlands (53°?S) as a function of sea spray fertilization, climate variations and volcanic fallout? A preliminary report

摘要

In the course of previously reconstructed paleoclimate, theyttrium (Y) content of the MA1 stalagmite from the MarceloArévalo (MA) cave at 53? S has been used as proxy for rainfall intensity-related transport of siliciclastic detritus ontothe speleothem (Schimpf et al., 2011). Due to the fact thatlater works (e.g., Hartland et al., 2012; Birkel et al., 2017)highlight organic complexation as the dominant transportpathway of Y and other hardly soluble trace elements inDOC-rich waters, a reconsideration of the MA1 stalagmite’sY record was necessary, including an investigation on localsoil formation as well as rock weathering.