Rare Earth Elements behavior at Poás hyperacid crater lake (Costa Rica) during a cycle of frequent phreatic eruptions (2008-2016) (original) (raw)

Variations of Rare Earth Elements (REE) in the hyperacid crater lake Laguna Caliente of Poás volcano, Costa Rica, from 2008 to 2016 were investigated to understand their relationship with phreatic eruptions and geochemical processes. The study found that REE concentrations increased with phreatic activity, with significant correlations to major elements and physicochemical parameters. The behavior of REE, especially LREE, was influenced by leaching processes and the precipitation of gypsum/anhydrite, indicating potential as precursors for volcanic activity changes.