Related by context. Frequent words. (Click for all words.) 58 Carboniferous 58 Upper Cretaceous 57 Scythian 57 cretaceous 56 Lower Cretaceous 53 sandstone reservoir 53 Triassic 52 Paleocene 52 Silurian 52 previously undrilled 51 massive sulphide deposits 51 Oligocene 51 Thracians 51 interbedded 50 Paleozoic 50 haematite 50 uphole 50 Cretaceous 50 Mesolithic 50 depositional 49 Ordovician 49 gossans 49 clastic 49 mudstones 49 stratigraphically 49 felsic volcanic 49 Miocene 48 carbonate reservoirs 48 seismically defined 48 uraniferous 48 calcareous 48 Roman conquest 48 gneisses 48 Devonian 48 alluvial deposits 48 siltstone 48 VIC/P# 48 anomalism 48 porosities 48 kimberlitic 48 greywacke 48 Archaean 48 sandstone reservoirs 47 graben 47 sandstones 47 schists 47 Hittites 47 placer deposits 47 undrilled 47 Cossack 47 hydrocarbon bearing 47 Shaft Zone 47 Proterozoic 47 sulphide bearing 47 vuggy silica 47 potash mineralization 47 magnetite mineralization 47 banded iron 47 massive sulphide deposit 47 metasedimentary rocks 46 Quartzite 46 reservoir sands 46 siltstones 46 anticline 46 areal extent 46 porphyry mineralization 46 updip 46 Elamite 46 Lower Tertiary 46 andesitic 46 Cadomin 46 AKD# 46 Thracian 46 Pictish 46 volcanogenic massive sulphide 46 chromite mineralization 46 hydrothermal vent 46 lode gold 46 Mycenaean 46 tuffs 46 basaltic 46 Parthian 46 explorers 46 massive sulfides 46 quartz monzonite 46 massive sulphide mineralization 46 felsic 46 hornfels 46 downdip 46 syncline 45 Late Cretaceous 45 nickel sulphide mineralization 45 Eocene 45 Carthaginians 45 nickel sulphides 45 radiometric anomaly 45 jasperoid 45 Mesozoic 45 Upper Paleolithic 45 loess 45 Aurelian Oil &