Related by context. Frequent words. (Click for all words.) 68 subduction zone 65 tectonic plate 63 subduction 63 subduction zones 62 continental crust 61 lithosphere 60 megathrust 60 crustal 59 tectonic plates collide 58 Cascadia Subduction Zone 58 tectonic fault 57 earth crust 56 Cascadia subduction zone 56 ocean ridges 56 landmasses 56 seismically active regions 56 Earth crust 56 oceanic crust 56 tropopause 55 tectonic 55 graben 54 NE trending 54 carbonate rocks 54 Mineralization occurs 54 tectonic plates 53 temperature gradient 53 magma chamber 53 deformation 53 undersea earthquakes 52 faultline 52 porphyries 52 latitudinal 52 tectonics 52 metamorphic rocks 52 breccia zones 52 syncline 52 stockwork zone 52 extensional 52 Eurasian continent 51 andesitic 51 spacings 51 Enriquillo fault 51 jasperoid 51 transversely 51 Anatolian fault 51 curvatures 51 Valles Marineris 51 en echelon 51 hydrothermally altered 50 mafic volcanic rocks 50 hornfels 50 basaltic 50 hydrothermal breccia 50 igneous rocks 50 resistivity anomaly 50 magmas 50 undersea volcanoes 50 mafic volcanic 50 anticlockwise 50 volcanic islands 50 granitic rocks 50 San Andreas Fault 50 breccia pipes 50 thermocline 50 sedimentary basins 50 basalts 50 Strong quake jolts 50 anisotropy 50 NW trending 50 igneous rock 50 Celebes Sea 50 chalcopyrite mineralization 49 pyroclastic 49 depositional 49 mantos 49 ridging 49 weakly mineralized 49 mineralized horizons 49 quakes 49 Honshu island 49 graphitic 49 spatial scales 49 mafic volcanics 49 deforming 49 quakes measuring 49 breccia pipe 49 magma 49 splays 49 magmatic 49 hangingwall 49 porphyry mineralization 48 basalt 48 stratigraphically 48 gravity anomalies 48 plate tectonics 48 downdip 48 clasts 48 quartz monzonite 48 conductance 48 EM conductors 48 lava tubes