Geochemistry of rare-earth elements in Holocene sediments of an acidic estuary: Environmental markers (Tinto River Estuary, South-Western Spain)

Distinguishing subalpine soil types using extractible Al and Fe fractions and REE geochemistry

“…Moreover, some studies carried out in a boreal catchment (northern Sweden) have shown that the elemental fractionation resulting from soil processes (Öhlander et al, 1996) can be observed in the REE distribution of river colloids when normalized to unweathered parent material (Ingri et al, 2000;Andersson et al, 2006). Because of this, REE potentially offer a good tracer of discharge provenance, chemical weathering and changes in environmental conditions in sediments of aquatic systems (Sholkovitz, 1992;Borrego et al, 2005).…”

Geochemistry of rare earth elements in a passive treatment system built for acid mine drainage remediation

“…Also, in mining environments, REE may behave as tracers of AMD contamination. In fact numerous investigations on the identification of the water-rock interactions mechanisms that govern the chemistry of acidic drainage have been done, and several publications have reported the REE geochemistry of acidic sulphate in the last two decades (Johannesson et al, 1996;Johannesson and Zhou, 1999;Verplanck et al, 1999;Marchand, 2002;Borrego et al, 2005;Gammons et al, 2005a,b;Merten et al, 2005;Olias et al, 2005;Wood et al, 2006;Ferreira da Silva et al, 2009;Pérez-Lopez et al, 2010;Delgado et al, 2012;López-González et al, 2012). These works have reported a shale-normalized pattern enriched in MREE relative to LREE and HREE.…”

Rare earth elements in surface sediments of a marine coast under heavy anthropogenic influence: The Bohai Bay, China

“…Investigations of the background concentrations and geochemical fractionation of REEs in the environment including sediments, soils, and biological samples have been performed worldwide (e.g. Zhang et al, 1998;Leleyter et al, 1999;Cao et al, 2000;Zhang and Ishii, 2000;Yang et al, 2002;Borrego et al, 2005).…”