Related by context. Frequent words. (Click for all words.) 62 geologic formations 59 sedimentary rock 59 geological formations 54 rock formations 53 limestone formations 52 sedimentary basin 51 graben 51 lava tubes 51 sandstone reservoirs 51 radiometric anomaly 51 basalt 51 geologically 51 Geologically 51 depositional 50 peridotite 49 Sediments 49 Paleocene 49 magma chamber 49 outcroppings 49 Uranium mineralization 49 areal extent 49 salt domes 49 glacial till 49 sandstone 48 basalts 48 alluvium 48 Anticline 48 limestone caves 48 Burgess Shale 48 lava tube 48 geologic 48 shale deposits 48 Bakken formation 48 landform 48 coal seams 48 stalactite 47 outcrops 47 shales 47 mineralizing system 47 petrified wood 47 Ordovician 47 Bakken Formation 47 hydrothermal activity 47 sedimentary basins 47 gravity anomaly 47 stromatolites 47 hydrothermal vent 46 sedimentary rocks 46 Lower Cretaceous 46 limestones 46 aquifer 46 breccia pipe 46 mineralized lenses 46 overlie 46 Miwah Main Zone 46 barrens 46 skarn mineralization 46 glaciated 46 continental crust 46 porphyry deposit 46 breccia zone 46 Bakken shale 46 Utica shale 46 Carbonate 46 coal seam 45 mineralized corridor 45 ultramafic rocks 45 aquifers 45 lakebed 45 sandstones 45 marine sediments 45 mineralized horizons 45 Utica Shale 45 kerogen 45 geochemical anomaly 45 lavas 45 Shaft Zone 45 mineral occurrences 45 mafic volcanic rocks 45 surficial 45 rock outcrops 45 outcrop 45 mudstone 45 kimberlitic 45 methane hydrates 45 reservoir 45 volcanic rock 45 lithologies 45 lithology 44 rock outcrop 44 anticline 44 underground caverns 44 landforms 44 shale 44 Thelon Basin 44 uranium occurrences 44 oceanic crust 44 beaver pond 44 pegmatites 44 Paleozoic 44 breccia zones