Related by context. Frequent words. (Click for all words.) 62 volcanoes 60 volcanism 59 volcanic crater 58 volcanic 58 volcanic eruption 57 volcano 57 caldera 57 lava flows 56 geologically active 56 volcanic activity 55 dormant volcano 55 active volcanoes 54 lava 54 magma 53 plate tectonics 53 glaciation 53 volcanic eruptions 53 megafauna 52 Volcanic 52 supernova explosion 51 eruption 51 eruptions 51 volcano erupts 51 Earth crust 51 active volcanos 51 geologic 50 hydrothermal 50 earth crust 50 lava flow 50 molten rock 50 volcanic gases 50 mass extinction 50 tectonic 50 subduction zone 49 Tunguska 49 Kilauea volcano 49 volcanic rock 49 basalt 49 crustal 49 tectonic plate 49 seismic activity 49 Krakatoa 49 ejecta 49 seismicity 49 sedimentary rock 49 Eruptions 49 seismically active regions 48 earthquakes 48 magmatic 48 glacial lake 48 geomagnetic storm 48 geysers 48 extinct volcano 48 tectonics 47 volcanos 47 glacier 47 glacial melt 47 comet 47 Eta Carinae 47 Eyjafjallajökull 46 meteor 46 volcano erupted 46 crater 46 Ice Age 46 Pleistocene 46 meteorite 46 greenhouse warming 46 hydrothermal vents 46 supernova explosions 46 landmass 46 prehistoric 46 permafrost 46 mass extinctions 46 San Andreas Fault 46 subduction zones 46 glaciers 46 pyroclastic flows 45 supernova 45 gamma ray burst 45 eruptive 45 Iapetus 45 quakes 45 molten lava 45 Mount Etna 45 mammoths 45 Pinatubo 45 fossils 45 Ellesmere Island 45 Katla 45 volcanic islands 45 crust 45 Iceland Eyjafjallajokull volcano 45 journal Geology 45 Eruption 44 Tibetan Plateau 44 woolly mammoths 44 volcano eruption 44 Late Cretaceous 44 dwarf galaxy 44 volcanologists 44 lichen