Related by context. Frequent words. (Click for all words.) 67 tectonic plate 59 subduction zone 58 tectonic plates 58 subduction 58 tectonic 58 crustal 56 tectonics 56 Earth crust 55 lithosphere 55 subduction zones 54 tectonic plates collide 53 Cascadia Subduction Zone 53 landmasses 53 megathrust 53 seismically active regions 52 Cascadia subduction zone 52 earthquakes volcanoes 52 continental crust 52 tectonic fault 51 plate tectonics 51 undersea earthquakes 51 earth crust 51 seismic waves 51 Tidal waves 49 undersea volcanoes 49 faultline 49 deformation 49 extensional 48 ocean ridges 48 earthquakes 48 latitudinal 47 continental plates 47 continental drift 47 deforming 47 oceanic crust 47 deformations 46 counterclockwise direction 46 oceanic 46 seismic activity 46 atmospheric circulation 45 Brownian motion 45 discontinuities 45 tsunamis 45 igneous rocks 45 spacetime 45 magnetic reconnection 45 gravitational tug 45 wavelike 45 erupting volcanoes 45 pyroclastic flow 44 deltaic 44 clasts 44 elastically 44 instabilities 44 quakes 44 poleward 44 oblique angle 44 supercontinent 44 seismographic 44 auroral 44 landforms 44 substorm 44 glacial melting 44 Tibetan Plateau 44 seismic 44 decoherence 44 escarpments 44 polar vortex 44 hydrothermal activity 43 amplitudes 43 tropospheric 43 Quake shakes 43 meteorite impacts 43 vortices 43 earth tremors 43 striations 43 magmatic 43 volcanism 43 Volcanic eruptions 43 quakes measuring 43 Zoback 43 magnetic fields 43 cryosphere 43 topographies 43 San Andreas Fault 43 geoid 43 perturbations 43 cyclonic circulation 43 volcanoes 43 southwesterly direction 43 Tsunamis 43 tide gauges 43 faultlines 43 icecaps 43 oscillatory 43 silicon atoms 43 sedimentary basins 43 singularities 42 earthquake jolts 42 magmas 42 Liquefaction