Related by context. Frequent words. (Click for all words.) 61 Fire horseshoe shaped 54 Anatolian fault 53 faultline 53 subduction zones 52 undersea volcanoes 52 Cascadia Subduction Zone 52 lines encircling 52 volcanic zones 52 undersea earthquakes 52 continental plates 52 Cascadia subduction zone 51 tectonic plates collide 51 subduction zone 50 tectonic plates 50 lithosphere 50 seismically active regions 50 crustal 50 seismic activity 49 megathrust 49 geologically active 49 tectonic plate 49 ocean ridges 49 seismically active 48 equatorial Pacific Ocean 48 Quake jolts 48 volcanic islands 48 Enriquillo fault 48 volcanoes 48 volcanos 48 epicentered 48 University Lamont Doherty 48 mud volcanoes 47 hydrothermal activity 47 tectonic 47 Sunda Strait 47 active volcanoes 47 river deltas 47 deltaic 47 earthquake jolts 47 earth crust 47 subduction 46 supercontinent 46 volcanically active 46 volcanic activity 46 landmasses 46 Athens Geodynamic Institute 46 earthquakes 46 tide gauges 45 Earth crust 45 Etorofu 45 magmatic 45 La Nina cooling 45 graben 45 deplete oxygen 45 andesitic 45 volcanism 45 quakes measuring 45 Moderate quake 45 upwellings 45 San Andreas Fault 45 Onagawa nuclear 45 moonlets 44 Tibetan Plateau 44 Indonesian archipelago 44 seismological 44 thawing permafrost 44 seism 44 hydrothermally altered 44 igneous rocks 44 Valles Marineris 44 Madrid Fault 44 Kilauea Volcano 44 Pacific Ocean 44 Senkakus 44 NW trending 44 Mineralization occurs 44 underwater volcanoes 44 oceanic crust 44 Fault Zone 44 Volcano erupts 44 magmas 44 archipelagic 44 supervolcano 44 continental crust 44 latitudinal 43 gravity anomalies 43 landforms 43 tidal gauges 43 thermocline 43 PTWC 43 volcanic eruptions 43 Eurasian continent 43 quakes 43 pyroclastic 43 abiotic 43 Underwater robots 43 earthquakes volcanoes 43 equatorial Pacific 43 Internet backbones 43 splays 43 Quake shakes