Related by context. Frequent words. (Click for all words.) 61 volcanic 61 lava flows 60 volcanism 59 volcanoes 59 magma 59 crustal 58 hydrothermal 58 lava 57 volcano 57 dormant volcano 56 glacier 56 basalt 56 crater 55 volcanic rock 55 outcropping 55 geologic 55 lava flow 55 volcanic activity 54 volcanics 54 shear zones 53 stratigraphy 53 volcanic rocks 53 Earth crust 52 breccias 52 active volcanoes 52 porphyry 52 Tibetan Plateau 52 Precambrian 52 crater rim 52 sedimentary rock 52 subduction zone 52 intrusive rocks 51 breccia 51 glaciers 51 geologically 51 outcrops 51 structurally controlled 51 plate tectonics 51 subduction zones 50 molten rock 50 epithermal 50 Eocene 50 sedimentary rocks 50 tectonic 50 Kilauea 49 hydrothermal vents 49 hydrothermal alteration 49 ridge 49 granites 49 stockwork 49 Cretaceous 49 gold mineralization 49 glaciation 49 hot springs 49 shear zone 49 rock formations 49 Mauna Loa 48 Mesozoic 48 skarn 48 San Andreas Fault 48 sedimentary 48 lode 48 rhyolite 48 mafic 48 tectonic plate 48 molten lava 48 rockfalls 48 Antarctic Ice 48 volcanos 48 massive sulphide mineralization 48 Volcanic 48 anticline 48 outcrop 48 unconformity 47 porphyry copper gold 47 volcano crater 47 karst 47 seismicity 47 copper porphyry 47 sandstones 47 copper mineralization 47 earth crust 47 stratigraphic 47 landforms 47 lava dome 47 ultramafic 47 Mineralization 47 Great Rift Valley 47 mineralization 47 orebody 47 volcanic eruptions 46 Carlin Trend 46 epithermal gold 46 massive sulphides 46 brecciated 46 geological 46 granodiorite 46 glacial ice 46 Triassic 46 pegmatites 46 sediments