Related by context. Frequent words. (Click for all words.) 75 tectonic plate 73 subduction zones 68 Earth crust 66 tectonic plates 64 crustal 63 earth crust 62 tectonic 59 volcanism 58 seismic activity 58 San Andreas Fault 55 plate tectonics 55 faultline 55 magma 55 quakes 53 seafloor 53 continental plates 52 deformation 52 caldera 51 seismicity 51 seismically active 51 earthquakes 51 molten rock 50 sedimentary rock 50 volcanoes 49 seismologists 49 Seismologists 49 Antarctic Ice 48 volcanic activity 48 sediments 48 basalt 48 temblors 48 Antarctic Peninsula 47 geologic 47 crust 47 sedimentary 47 lava flows 46 glacial ice 46 upwelling 46 Juan de Fuca 46 glacier 46 permafrost 46 glaciation 46 hydrothermal vents 46 undersea quake 46 seismic waves 46 active volcanoes 45 hydrothermal 45 stratigraphy 45 seabed 45 tsunamis 45 geophysicists 45 gas hydrates 45 seismology 45 geologically 44 magnitude earthquake 44 volcanics 44 sedimentary rocks 44 Tibetan Plateau 44 glaciers 44 magnetosphere 43 Pacific Ocean 43 meltwater 43 equatorial Pacific 43 troposphere 43 seismic 43 magnetization 42 seismometers 42 lava dome 42 hydrothermal alteration 42 Geologic 42 volcanic 42 lava 42 volcanic rock 42 shear zones 42 Ellesmere Island 42 continental shelf 42 landmass 42 undersea earthquake 42 carbonate 42 temblor 42 Geologists 42 Geophysical Research 42 ductile 42 rockfalls 41 Antarctic ice 41 Greenland ice 41 Ordovician 41 seismological 41 earthquake 41 Nature Geoscience 41 Loop Current 41 landforms 41 #.# magnitude earthquake 41 geological 41 atmospheric circulation 41 volcanic eruptions 41 seismologist 41 tropical cyclones 41 volcanic rocks 41 gabbro 41 Tsunamis