Related by context. Frequent words. (Click for all words.) 54 marine sediments 53 supercontinent 53 glacial melt 52 magma chamber 51 volcanism 51 lavas 51 landmasses 51 alluvial deposits 51 glaciation 50 landmass 49 seabeds 49 geologic 49 interglacial period 49 meltwater 48 microfossils 48 sedimentary basins 48 glaciers 48 subsurface 48 sediments 48 Late Cretaceous 48 drainage basins 48 fluvial 48 biota 48 melting permafrost 48 glacial melting 48 moraines 47 Weddell Sea 47 landforms 47 methane hydrate 47 Younger Dryas 46 lakebed 46 methane hydrates 46 graben 46 Quaternary 46 continental crust 46 geologically active 46 sedimentary rock 46 continental drift 46 lava flows 46 magmatic 45 Sediments 45 oceanic crust 45 headwaters 45 subduction 45 volcanic eruptions 45 Brahmaputra River 45 Meridiani 45 crustal 45 alluvium 45 Cascadia subduction zone 45 geological 45 navigable waterway 45 volcanic activity 44 Lower Cretaceous 44 glacier 44 river valleys 44 megafauna 44 plate tectonics 44 hydrological cycle 44 volcanic crater 44 lithosphere 44 Geologically 44 lake sediments 44 Lake Agassiz 44 mass extinctions 44 sedimentary basin 44 gas hydrates 44 sediment cores 44 unmapped 44 basin 44 geomorphology 44 sediment 43 glaciated 43 Paleocene 43 drainages 43 sedimentary rocks 43 glacial lake 43 intertidal 43 riverbed 43 Seward Peninsula 43 geologic formation 43 volcanic eruption 43 polar caps 43 gravels 43 Stikine 43 basalt 43 icecaps 43 headwater 43 retreating glaciers 43 mudflows 43 Sandwich Islands 43 Pleistocene 43 geologically 43 glacial till 43 peridotite 42 landslips 42 river deltas 42 gullies 42 herring fishery 42 interglacial 42 basaltic