glaciation, plate tectonics, lavas, magmas, crustal, deglaciation, hydrothermal, rifting, tectonic, seismicity, volcanoes, lithosphere, subduction, basalts, hydrosphere, upwelling, landforms, ejecta, olivine, paleogene, glaciers, caldera, supercontinent, precambrian, silicic, metamorphism, depositional, sediments, auroral, ordovician, syrtis major, megafauna, el nino southern oscillation, neogene, continental drift, sedimentary, phanerozoic, noachian, faunas, planetesimal, chondrules, hydrologic cycle, cenozoic, igneous, compressional, mineralizing, jarosite, stratovolcano, holocene, enceladus, permafrost, eruptions, chondrites, supernovae, tropopause, sedimentary rock, quaternary period, amundsen sea, quasar, silicates, sunspots, orogenic, deformation, convective, poleward, geochronology, iapetus, meltwater, storminess, pyroclastic, photosphere, gondwanaland, mesozoic, archaean, scarps, landmasses, metamorphic rock, magnetosphere, hadean, igneous rock, water vapor, glacial, eocene, graben, palaeo, convection, subducting, comets, interglacial, asthenosphere, loess, albedo, biogeochemical, neutron star, craton, spherules, exosphere, anisotropy, phyllosilicate, dolomites, chromosphere, palaeozoic, magmatism, volcanics, volcanic, tectonism, tectonics, faulting, uplifts, andesites, plutons, denudation, evaporites, intrusives, subsidence

geological phenomenon