Related by context. Frequent words. (Click for all words.) 63 surficial 62 basaltic 61 andesitic 61 kaolinite 60 metamorphic rocks 59 depositional 59 breccia pipes 59 hydrothermal activity 59 igneous rocks 59 hydrothermally altered 58 Upper Cretaceous 58 glacial till 58 basalts 58 hydrothermal breccia 58 clasts 58 vuggy silica 57 sedimentary 57 Valles Marineris 57 graben 57 limestones 57 siliceous 57 kimberlitic 56 extensional 56 alluvium 56 geologic 56 volcanics 56 Geologically 56 crustal 56 syncline 56 basalt 56 gravity anomalies 56 igneous rock 56 magmatic 56 mafic volcanics 56 sedimentary basins 56 sedimentary basin 56 siltstones 56 lavas 55 pyroclastic 55 monzonite 55 geologic formation 55 fluvial 55 quartz monzonite 55 felsic volcanic rocks 55 stratiform 55 Mineralization occurs 55 stockwork mineralization 55 placer deposits 55 embayment 55 schists 55 breccia zones 55 areal extent 55 sulfide minerals 55 magma chamber 55 NE trending 55 carbonaceous 55 jasperoid 55 drainage basins 55 Archaean 55 calcareous 55 porosities 55 dacite 55 gneisses 55 peridotite 54 sedimentary rock 54 Uranium mineralization 54 breccia pipe 54 quartz carbonate veins 54 porphyry mineralization 54 skarn mineralization 54 sulphide bearing 54 interbedded 54 chalcopyrite mineralization 54 diatreme 54 geological 54 igneous 54 batholith 54 carbonate reservoirs 54 NW trending 53 overlies 53 deltaic 53 hydrothermal alteration 53 radiometric anomalies 53 alluvial deposits 53 intrusives 53 mineralizing 53 lithologic 53 conductive zones 53 granitic 53 hornfels 53 carbonate replacement 53 marine sediments 53 geologically 53 magmas 53 Geological mapping 53 argillic alteration 53 geochemically anomalous 53 carbonatite 53 massive sulphide deposits 53 outcrops 53 pyroxenite