Related by context. Frequent words. (Click for all words.) 53 syncline 53 dolerite 52 limestone bedrock 51 sedimentary deposits 51 erosional 50 sedimentary layers 50 JM Reef 50 Transantarctic Mountains 50 loess 50 Nankai Trough 50 Fram Strait 49 basalt rock 49 halite 49 subalpine 49 Qinghai Tibet plateau 49 graben 49 stibnite 49 Athabasca basin 49 tonalite 49 sulphidic 49 arcuate 49 crustal 48 granitoids 48 northerly trending 48 lateritic 48 Geologic mapping 48 meteorite fragments 48 temperature gradient 48 Marcellus shale formation 48 disseminated sulphide mineralization 48 Thor Trend 48 Olympus Mons 48 volcanic lava 48 ultramafic rock 48 subglacial 48 volcanogenic 48 NE trending 47 volcaniclastic 47 amphibolite 47 calderas 47 sedimentary rock 47 volcanic ridge 47 DPFZ 47 hydrothermally altered 47 glacier carved 47 gneisses 47 gabbros 47 naturally occurring mineral 47 mineralized boulders 47 Porcupine Destor Fault 47 surficial 47 ocean basins 47 Ogallala aquifer 47 craton 47 granitic rocks 47 subvertical 47 uraniferous 47 iron carbonate 47 mineralized breccia 47 Coalbed methane 47 phosphorite 47 Shiveluch 47 mineralized outcrops 47 copper molybdenum mineralization 46 Greenland glacier 46 continental crust 46 limestone cliff 46 advanced argillic alteration 46 quartz veined 46 breccia pipes 46 volcanic craters 46 glacial till 46 sulfide bearing 46 feldspar porphyry 46 Archaean 46 oceanic crust 46 metamorphic rocks 46 chromitite 46 surface geochemistry 46 surface outcrops 46 subparallel 46 #cm diameter 46 clastic 46 terrane 46 tuffaceous 46 meteor crater 46 quartz stockworks 46 shallowly dipping 46 escarpments 46 Witwatersrand Basin 46 Lake Vostok 46 palaeochannel 46 mudstones 46 igneous rocks 46 metasedimentary 46 vuggy silica 46 Yellowstone caldera 46 Mineralization occurs 46 sandstone formations 46 dips steeply 46 dolomitic