Related by context. Frequent words. (Click for all words.) 65 geologic 65 geological 63 geological formations 63 sedimentary rocks 62 stratigraphy 61 Eocene 60 shales 60 Proterozoic 60 sedimentary rock 60 geology 59 Ordovician 59 sedimentary 58 Precambrian 58 stratigraphic 58 Cretaceous 58 geologic formations 58 intrusive rocks 57 Paleozoic 57 volcanics 57 porphyry copper 56 undrilled 56 granites 56 volcanic rocks 56 anticline 56 rock formations 56 porphyry copper gold 56 porphyry 55 Triassic 55 hydrothermal 55 sandstones 55 crustal 55 orebodies 55 magnetic anomalies 55 carbonatite 54 Archean 54 underlain 54 magmatic 54 Miocene 54 geologists 54 outcrops 54 hydrothermal alteration 54 lithologies 54 shallow depths 54 Mesozoic 54 greenstone belt 54 underexplored 54 landforms 54 epithermal gold 54 VMS deposits 53 massive sulfide 53 epithermal 53 Pliocene 53 lithology 53 copper porphyry 53 uranium mineralization 53 structurally controlled 53 shear zones 53 basalt 53 pegmatites 53 rhyolite 53 outcrop 52 metasediments 52 diamondiferous 52 ultramafic 52 steeply dipping 52 molybdenum mineralization 52 relatively unexplored 52 sulfide mineralization 52 alteration zones 52 mineralogy 52 sediments 52 Devonian 52 gabbro 52 volcanism 51 mineralized 51 caldera 51 bulk tonnage gold 51 unconformity 51 massive sulphide mineralization 51 banded iron 51 pegmatite 51 gold mineralization 51 volcanic rock 51 diorite 51 polymetallic 51 Greenstone Belt 51 placer gold 51 mafic 50 breccia 50 massive sulphide 50 Carlin Trend 50 silicified 50 Mineralisation 50 mineralization occurs 50 brecciated 50 copper mineralization 50 breccias 50 gossan 50 volcanic 50 Geologic 50 coal seams