volcanic glass 8 Argentina 6 Active volcano 4 Eruptive column 4 Groundwater 4 Peteroa Volcano 4 Plinia 4 Sedimentology 4 Sediments 4 Sup-plinian eruption 4 Tephra 4 Volcanic glass 4 Volcanic plume 4 Volcanoes 4 crystal 4 dissolution 4 fumarole 4 groundwater 4 mineralogy 4 plume 4 tephra 4 volcanic eruption 4 Analytical geochemistry 2 Antimony 2 Aquifers 2 Arid climates 2 Arsenic 2 Calcium 2 Catchments 2 Chaco [Argentina] 2