Related by context. Frequent words. (Click for all words.) 61 subduction zone 59 Cascadia Subduction Zone 59 tectonic plate 58 tectonics 57 crustal 57 continental crust 57 Cascadia subduction zone 56 landmasses 55 lithosphere 55 subduction 55 oceanic crust 54 tectonic 54 subduction zones 54 volcanism 53 earth crust 53 quakes 52 ocean ridges 52 faultline 52 volcanic islands 52 geologically active 51 river deltas 51 Quake shakes 51 earthquakes 51 earth tremors 50 tectonic plates collide 50 seismic activity 50 seismicity 50 Eurasian continent 50 Madrid Seismic Zone 49 earthquake jolts 49 Weddell Sea 49 sedimentary basins 49 magma chamber 49 volcanoes 49 volcanic plume 49 Earth crust 49 latitudinal 49 volcanic 49 temperate forests 49 Volcanic eruptions 48 temperature gradient 48 lavas 48 seismically active 48 marine sediments 48 San Andreas Fault 48 glaciated 48 Earthquake shakes 48 graben 48 landforms 48 Celebes Sea 48 seamount 48 seamounts 47 seismically active regions 47 ITCZ 47 La Nina pattern 47 quakes measuring 47 active volcanoes 47 basalts 47 volcanically active 47 Madrid Fault 47 sedimentary basin 47 caldera 47 Fault Zone 47 volcanic gases 47 Tibetan Plateau 47 flyways 46 deformation 46 monsoon trough 46 hydrothermal vent 46 equatorial 46 explosive eruptions 46 Ross Ice Shelf 46 tectonic plates 46 temblors 46 extensional 46 quake rattles 46 Kilauea Volcano 46 ridge 46 northernmost tip 46 basalt 46 volcanic eruption 46 tremors 46 active volcanos 45 tsunamis 45 gyre 45 limestone caves 45 volcanic crater 45 marine invertebrates 45 magmatic 45 undersea quake 45 storminess 45 tremor 45 topographically 45 Pacific Ocean 45 seafloor 45 lava flows 45 mountain ranges 45 mid latitudes 45 subtropical regions 45 volcanic activity 45 El Nino warming