Argentina 12 maar Laguna Potrok Aike 8 Patagonia 8 Santa Cruz [Argentina] 8 lacustrine deposit 6 Bacillariophyta 4 Deposits 4 Diatoms 4 Holocene 4 Lakes 4 Southern Hemisphere 4 Volcanoes 4 diatom 4 lava flow 4 paleoclimate 4 tephra 4 volcanic eruption 4 Alajuela 2 Angular unconformity 2 Antarctic warm events 2 Bacteria (microorganisms) 2 Ballistics 2 Climatology 2 Coalescing maars 2 Cordoba [Argentina] 2 Costa Rica 2 Cuarto River 2 Cymbella 2 Cymbella cistula 2