Related by context. Frequent words. (Click for all words.) 65 tectonic plate 60 subduction zone 59 subduction 58 Earth crust 57 crustal 57 continental crust 56 lithosphere 56 earth crust 56 subduction zones 55 tectonic 55 Cascadia subduction zone 54 oceanic crust 54 megathrust 54 tectonic plates collide 53 tectonic plates 50 Pacific Ocean 50 seismically active regions 49 magma 49 Anatolian fault 49 Honshu island 48 landmasses 48 Celebes Sea 48 seafloor 47 molten rock 47 Cascadia Subduction Zone 47 Tropical Storm Agatha 47 Tohoku earthquake 47 polar vortex 46 syncline 46 extensional 46 carbonate rocks 46 tectonics 46 tectonic fault 46 aftershock rattled 46 seawaters 46 tremblor 46 continental drift 46 magma chamber 45 Bohai Sea 45 undersea earthquake 45 undersea earthquakes 45 supercontinent 45 outer crust 45 Mineralization occurs 45 aftershock shook 45 seismic waves 45 counterclockwise direction 45 Quake jolts 45 Typhoon Songda 45 Kilauea Volcano 45 ocean ridges 45 plate tectonics 45 seamount 45 magmatic 44 Moderate quake 44 continental plates 44 pyroclastic 44 Cyclone Laila 44 equatorial Pacific Ocean 44 seismic activity 44 upwellings 44 deformation 44 tropical storm Agatha 44 glaciers melt 44 Quake shakes 44 upwelling 44 volcanically active 44 deforming 44 caldera 44 Wilkins Ice Shelf 43 #.# magnitude earthquake 43 Sibuyan island 43 pyroclastic flow 43 San Andreas Fault 43 Antarctic peninsula 43 magnitude undersea 43 Tropical Cyclone Nargis 43 geologically active 43 Douglas Shoal 43 tremor measuring 43 seabed 43 Ross Ice Shelf 43 Puerto Angel 43 earthquake jolts 43 undersea quake 43 southwesterly direction 43 southeastward 43 Tibetan Plateau 43 Tidal waves 43 hydrothermal activity 42 Hurricane Celia 42 heliosheath 42 Kealakekua Bay 42 oceanic 42 Loma Prieta quake 42 volcanism 42 Antarctic Ice 42 quakes measuring 42 hydrothermal breccia 42 seism 42 seismically active