Related by context. Frequent words. (Click for all words.) 66 tectonic plates collide 64 subduction zone 64 tectonic plate 60 subduction zones 59 Cascadia subduction zone 58 seismically active regions 58 megathrust 58 Strong quake jolts 57 tectonic fault 57 Vatnajokull glacier 56 lithosphere 56 oceanic crust 55 subduction 54 Earth crust 54 Mineralization occurs 54 earth crust 54 Cascadia Subduction Zone 53 quakes measuring 53 continental crust 53 faultline 53 Roraima Basin 53 volcanic islands 53 Volcano erupts 53 Ferry sinks 52 tectonic plates 52 #,#-#,# ft. Loc 52 symbol TOL 52 Quake jolts 52 syncline 52 Moderate quake 52 Celebes Sea 52 symbol JWN 52 Anatolian fault 52 symbol WMT 52 Mentawai chain 51 graben 51 crustal 51 Sumbawa Island 51 NE trending 51 #S #W 51 undersea earthquakes 51 Lava flows 51 outer crust 51 El Nino Southern Oscillation 51 symbol SPG 51 equatorial waters 50 tropopause 50 northerly trending 50 sedimentary basin 50 magma chamber 50 Earthquake Hits 50 gneisses 50 tectonic 50 Earthquake jolts 50 undersea volcanoes 50 earthquake jolts 50 Equatorial Pacific 50 #.# Magnitude Earthquake 50 Quake shakes 50 aftershock measuring 50 epicentered 49 Kermadec Islands 49 Tidal waves 49 erosional 49 clasts 49 Valles Marineris 49 quake jolts 49 photosphere 49 magnitude undersea 49 NW trending 49 continental plates 49 peridotite 49 subparallel 49 Quake Hits 49 #.# Magnitude Quake 49 Russia Kamchatka Peninsula 48 hydrothermal activity 48 undersea earthquake 48 Greenland glacier 48 ticker symbol CTS 48 metamorphic rocks 48 Earthquake shakes 48 stratigraphically 48 chalcopyrite mineralization 48 supervolcano 48 weakly mineralized 48 tremor measuring 48 mudstones 48 igneous rock 48 escarpments 48 quake shakes 48 landmasses 48 Olympus Mons 48 ticker symbol ARM 48 San Andreas Fault 48 Tharsis 48 Gangetic West 48 andesitic 48 stratiform 48 celestial equator 48 volcanic crater