Investigating heterogeneous geochemistry of brines and sediments from the Salar de Llamara: A case study from a polyextreme environment

Amanda Oehlert – University of Miami

The Atacama Desert is home to a variety of extreme environments. It includes salt flats, with wide ranging age, chemistry and styles of mineral deposition. One of these extreme environments is the Salar de Llamara which contains more than 400 saline lagoons and peripheral ponds locally called “Puquios”, with a diverse range in brine chemistry and sedimentation styles which appear to result from the complex interplay between physical, chemical, and biological processes. In this talk, the major characteristics of the Puquios will be presented, and heterogeneity of lagoon chemistry and five sediment cores will be evaluated to provide insight into environmental reconstruction of extreme environments.