Related by context. Frequent words. (Click for all words.) 65 crustal 63 volcanism 62 lithosphere 61 magmatic 61 subduction 60 tectonic 60 continental crust 59 landmasses 59 lavas 58 oceanic crust 58 basalts 58 glaciation 58 tectonics 58 plate tectonics 56 continental drift 54 mineralizing 54 Paleozoic 54 Ordovician 54 Late Cretaceous 54 convective 53 igneous 53 Mesozoic 53 caldera 53 spacetime 53 sedimentary basins 53 hydrothermal 53 sedimentary 52 stratigraphy 52 geologic 52 Younger Dryas 52 sedimentary basin 52 hydrothermal alteration 52 facies 52 deformation 52 auroral 51 tectonic plate 51 Earth crust 51 tuffs 51 Proterozoic 51 Precambrian 51 subduction zone 51 magnetosphere 51 magma chamber 50 atmospheric circulation 50 volcanic 50 shear zones 50 anisotropic 50 Quaternary 50 sedimentary rocks 50 Eocene 50 sediments 50 Iapetus 50 Cretaceous 50 equatorial 50 earth crust 49 landforms 49 felsic 49 fluvial 49 splays 49 mineralizing system 49 magma 49 peridotite 49 lithological 49 intrusives 49 gravity anomaly 49 volcanics 49 hydrological cycle 49 volcanic islands 49 geologically active 48 limestones 48 Geologically 48 brecciation 48 auriferous 48 ultramafic 48 X ray emission 48 Ross Ice Shelf 48 mantos 48 terrestrial ecosystems 48 sulphide bearing 48 morphologies 48 anisotropy 48 Kuiper belt 48 Oligocene 48 interglacial period 48 geologically 48 overlies 48 volcanic rocks 48 lithologies 48 mafic 48 ejecta 48 Carboniferous 47 vortices 47 discontinuous 47 metamorphic 47 siliceous 47 glacial 47 lava flows 47 marine sediments 47 equatorial Pacific Ocean 47 intrusive rocks 47 ultramafic rocks