Related by context. Frequent words. (Click for all words.) 72 crustal 67 Earth crust 66 earth crust 65 subduction 65 volcanism 64 subduction zone 64 sedimentary rock 64 peridotite 63 plate tectonics 62 olivine 62 subduction zones 61 glaciation 60 magmatic 59 tectonic plate 59 Precambrian 59 sedimentary rocks 59 tectonic 58 sediments 58 sedimentary 58 landmasses 58 basalt 57 Ordovician 57 Tibetan Plateau 57 tectonics 57 Eocene 56 geologically active 56 Antarctic Ice 56 magma 56 geologically 56 carbonate 55 ejecta 55 Mesozoic 55 calcite 55 silicates 55 geologic 55 Late Cretaceous 55 landforms 54 ultramafic rocks 54 caldera 54 volcanic rocks 54 deformation 54 Antarctic ice 54 limestones 54 Paleozoic 54 crust 54 hydrothermal alteration 53 andesite 53 hydrothermal 53 mid latitudes 53 meltwater 53 Proterozoic 53 silicate 53 intrusive rocks 53 volcanics 53 Cretaceous 53 sedimentary basins 53 permafrost 53 granitic 53 regolith 53 gabbro 53 glacial ice 53 glaciers 53 fossils 52 stratigraphy 52 lithologies 52 rocky planets 52 Archean 52 gneiss 52 granites 52 molten rock 52 volcanic rock 52 hydrothermal vents 52 carbonatite 52 stalagmite 52 sulfide mineralization 52 intrusives 52 landmass 52 terrestrial planets 51 sulphides 51 massive sulfide 51 Iapetus 51 equatorial 51 magnetosphere 51 hematite 51 gas hydrates 51 lava flows 51 apatite 51 Antarctic Peninsula 51 tectonic plates 51 rhyolite 51 massive sulphide mineralization 50 volcanic 50 temperate regions 50 heliosphere 50 volcanic activity 50 neutron star 50 lake sediments 50 seismicity 50 sulphide mineralization 50 ultramafic 50 mineralizing