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(Click for frequent words.) 77 geological formations 69 saline aquifers 63 rock formations 62 geologic formation 61 sandstone formations 61 saline formations 61 deep saline aquifers 59 saline aquifer 59 shale formations 58 shale basins 58 geologically 58 subsurface geology 57 hydrate deposits 56 underground geological formations 56 sedimentary layers 56 shales 56 seafloor sediments 56 geologic 56 Shale formations 56 geologic sequestration 56 sandstone reservoirs 56 unmineable coal seams 55 hydrocarbon reservoirs 55 coal seams 55 hydrocarbon accumulations 55 layered sedimentary rock 55 caverns 55 sedimentary rock 55 impermeable shale 54 Coalbed methane 54 Cook Inlet basin 54 karst topography 54 geological strata 54 geological sequestration 54 salt domes 54 carbonate formations 53 sedimentary deposits 53 subsurface aquifers 53 sequester CO2 53 microbialites 53 shale deposits 53 Jurassic formations 53 clastic reservoirs 53 basalt formations 53 limestone bedrock 53 geologies 53 freshwater aquifers 53 sedimentary basins 53 karst terrain 53 underground caverns 52 cinder cones 52 subglacial lake 52 methane hydrate 52 Sierras Blancas 52 granitic basement 52 deep saline aquifer 52 subsurface 52 CO2 sequestration 52 Devonian shale 52 basalt flows 52 unconventional reservoirs 52 thermally mature 52 paleochannel 52 lava tubes 52 underground geologic formations 52 Triassic formations 52 Eldor Carbonatite 51 bonebed 51 hydraulically fracture 51 porous sandstone 51 Middle Devonian 51 subglacial lakes 51 speleothems 51 geological 51 Burgess Shale 51 Chattanooga Shale 51 Navajo Sandstone 51 rubbly 51 Triassic Jurassic 51 Lake Vostok 51 porosity permeability 51 silicic 51 groundwater aquifer 51 permafrost 51 Mancos shale 51 Methane hydrates 51 mud volcanoes 50 limestone caves 50 limestone outcrops 50 Aquifers 50 Marcellus shale formation 50 aquifers 50 nahcolite 50 dolomites 50 basins 50 Arctic Coastal Plain 50 glacial geology 50 limestone caverns 50 Late Paleozoic 50 sands silts 50 Storing carbon dioxide 50 sagebrush steppe 50 placer workings 50 McMurdo Dry Valleys 50 methane hydrate deposits 50 Sediment cores 50 Ogallala aquifer 50 Paradox Basin 50 Upper Jurassic 50 basaltic rocks 50 faunas 50 Athabasca sandstone 50 vertebrate fossils 50 depositional 50 Paleogene 50 Precambrian rocks 50 Niobrara formation 50 Piceance basin 50 groundwaters 50 geology 50 shallower Cretaceous 50 Caney Shale 50 caprock 50 subterranean caves 50 subsurface geologic 50 methane hydrates 50 Newberry Crater 50 Permo Triassic 50 methane seeps 50 depositional environment 50 subaqueous 50 Lake Yoa 50 sedimentary sequences 50 calcic 50 Baxter Shale 50 drillsites 49 Modoc Plateau 49 karsts 49 booming Bakken Shale 49 karst geology 49 Mirzaani Field 49 bbl MMcf 49 carbonate reservoir 49 metamorphic rocks 49 alluvial soils 49 unmineable 49 sediments deposited 49 stratigraphic traps 49 marine sediments 49 bedrock aquifers 49 Paleocene 49 sandstone bluffs 49 antimony mineralization 49 karst limestone 49 temperate forests 49 fine grained sandstone 49 porosities 49 claystone 49 magma chamber 49 Gething formation 49 Upper Miocene 49 terranes 49 Barnett Shale formation 49 structural stratigraphic 49 Cretaceous Jurassic 49 salt dome caverns 49 underground mineable 49 shallow aquifers 49 clathrates 49 coalbeds 49 phyllosilicate 49 sandstones 49 Waipawa Black 49 Dry Valleys 49 Yasuni National 49 volcanogenic 49 kerogen 49 Miocene formations 49 magmatic sulphide 49 subsurface minerals 49 Cenomanian 49 sedimentary rocks 49 mineralized breccias 49 lateritic 49 stromatolites 49 surface geochemical anomalies 49 shallow overburden 49 shale 49 economically exploitable 49 limestone cavern 49 comet nuclei 49 Niobrara shale formation 49 uranium ores 49 geological repository 49 Upper Mannville 49 glacial fjord 49 Zechstein 48 ecoregion 48 clastics 48 Artesia Vacuum Trend 48 volcanic ridges 48 Cambrian Ordovician 48 Snake River Plain 48 microfossils 48 sequestering carbon dioxide 48 coniferous forests 48 landforms 48 Montney formation 48 mammal fossils 48 igneous rocks 48 Niobrara Shale formation 48 Bakken shale formation 48 shallow aquifer 48 carbonatites 48 Athabasca tar sands 48 paleochannels 48 Bluesky formation 48 Balarat Project 48 playa lakes 48 bottomland forests 48 geologic basins 48 abyssal plain 48 stratigraphic sequence 48 Cretaceous periods 48 coalbed 48 seafloor methane 48 Outcrops 48 Jurassic reservoirs 48 sandstone horizons 48 ultradeep waters 48 Altamont Bluebell 48 volcanic tuffs 48 outwash 48 geothermal gradient 48 volcanic vents 48 substrata 48 amplitude anomaly 48 sandstone reservoir 48 rock outcrops 48 coalbed gas 48 carbonate rocks 48 Utica Shale formation 48 Poplar Deposit 48 Lower Cretaceous 48 earths crust 48 sequester carbon dioxide 48 brackish groundwater 48 extinct volcanoes 48 Horizontal wells 48 Devonian reef 48 silicate mineral 48 surface mineable 48 sedimentary basin 48 quartz adularia 48 Cannery Loop 48 diabase 48 headwater streams 48 overthrust belt 48 porous limestone 48 silicate rocks 48 fossils 48 hydrocarbon accumulation 48 sediments 48 Niobrara Formation 48 carbon dioxide sequestration 48 overthrust 48 dolomitized 47 Haynesville Shale formation 47 Bighorn Basin 47 Carbonate rocks 47 Arkoma basin 47 Lemhi Pass 47 geochemically 47 groundwater aquifers 47 Marcellus shales 47 Rotliegend 47 Ozark aquifer 47 Upper Cretaceous 47 granodiorite porphyry 47 hydrated minerals 47 bulk mineable deposit 47 Etango deposit 47 cedar glades 47 drillable 47 geological terrains 47 geothermally 47 karst formations 47 IP geophysical anomalies 47 Wireline logs 47 undrilled locations 47 #bcf [002] 47 Simpson Dolomite 47 sulphide deposits 47 granitoids 47 Contaminated groundwater 47 areal extent 47 Arctic permafrost 47 predate NI #-# 47 Whangai Shale source 47 volcanic basalt 47 Fayetteville Shale formation 47 Eocene 47 permeability reservoir 47 Triassic reservoirs 47 calderas 47 geysers spewing 47 tuffaceous rocks 47 Eagleford Shale 47 flood basalts 47 ecoregions 47 Navajo sandstone 47 metamorphic rock 47 Paisley Caves 47 prebiotic molecules 47 Elm Coulee 47 Roughrider uranium 47 paleoenvironmental 47 crestal 47 wellbores 47 geomechanics 47 Mancos Shale 47 siliceous sediments 47 undrilled prospects 47 Lengai 47 fossils unearthed 47 Vernal pools 47 OOIP 47 Jurassic sandstones 47 frac sand 47 epithermal gold deposits 47 Upper Triassic 47 sedimentary strata 47 Sulphurets deposit 47 carbonaceous shale 47 stromatolite 47 Doushantuo Formation 47 Sphagnum 47 polar craters 47 Bakken formation 47 Cretaceous reservoirs 47 hydrated silica 47 Cretaceous sandstones 47 shallower formations 47 mudpots 47 underground coal seams 47 shortgrass prairie 47 Valles Marineris 47 matrix porosity 47 Nemaha Ridge 47 microscopic fossils 47 foreland 47 Niobrara shale 47 Gyro sands 47 alpine tundra 47 landform 47 glacial moraines 47 evaporite minerals 47 Cretaceous sediments 47 hematite mineral 47 silicified outcrops 47 Powder River basin 47 Jurassic Triassic 47 REE deposits 47 Jurassic Cretaceous 46 meteor craters 46 carbonate minerals 46 syn rift 46 alteration halos 46 specular hematite 46 alluvial gravel 46 lava tube 46 alaskites 46 Nordegg Member 46 microseismic 46 Glauconitic 46 Slave Point 46 ocean sediment cores 46 offshore Gippsland Basin 46 glacial outwash 46 unconventional shales 46 sulfate minerals 46 yedoma 46 Ellenburger 46 UG2 reefs 46 coal seam 46 porphyry intrusions 46 Geologically 46 evaporite 46 Rancho La Brea 46 phyllosilicates 46 stratigraphic horizons 46 Sedimentary rocks 46 sedimentary formations 46 subsoils 46 grassland ecosystem 46 layered ultramafic 46 drilled horizontally 46 boreal regions 46 Miocene sands 46 sandstone limestone 46 operated horizontal wells 46 geophysical conductors 46 Laramidia 46 stalactites stalagmites 46 floras 46 Horizontal drilling 46 sandstone buttes 46 halite 46 hydrothermal vent 46 bedrock outcrops 46 Rotliegend sandstone 46 Berea sandstone 46 salt caverns 46 Siberian Traps 46 sequester carbon dioxide emissions 46 hydrothermal activity 46 Ice Age fossils 46 shallow depressions 46 drillable prospects 46 olivine rich 46 anticlines 46 grabens 46 cypress tupelo swamp 46 alluvial plain 46 sandstone aquifer 46 deepwater corals 46 prehistoric archaeological 46 Bakken Formation 46 Wollaston Domain 46 Mason Tract 46 Korkan target 46 ancient lava flows 46 shale extraction 46 Cardium formation 46 limestone karst 46 Nectocaris 46 soils 46 Albertine Graben 46 Waterflood 46 Overthrust 46 reservoir sandstones 46 talus slopes 46 geochronology 46 Neocomian 46 Uinta basin 46 Palaeocene 46 glacial erratics 46 undiscovered hydrocarbon 46 fluid inclusions 46 Teapot Granite 46 Bakken shale 46 AKK# 46 carbon isotopes 46 Chert 46 unconventional hydrocarbon 46 Cenozoic Era 46 Carboniferous 46 Floridian aquifer 46 cavern 46 cherts 46 reservoirs 46 Mesaverde Formation 46 cratons 46 epithermal vein systems 46 Foisey Creek 46 microfossil 46 seabed sediments 46 peridotite 46 REE bearing 46 Tasour field 46 streambanks 46 glaciations 46 stratigraphic trap 46 interglacial periods 46 subsalt cluster 46 eluvial 46 permeabilities 46 Caballos Formation 46 Neogene 46 Ozark Aquifer 46 Miocene reservoir 46 multistage frac 46 Fossil Butte 46 manto mineralization 46 streamside habitat 46 overlie 46 Middle Eocene 46 Rotliegendes 46 Zhana Makat Field 46 basalt 46 epithermal deposits 46 Palaeozoic 46 clastic 46 phreatic 46 felsic intrusions 46 basalt rock 46 geothermic 46 felsic tuff 46 temperate rainforest 46 Pearsall Shale 46 Globular clusters 46 carbonate sediments 46 horizontal wellbores 46 sea hydrothermal vents 46 rift basins 46 cretaceous 46 basalts 46 uphole zones 46 Archean greenstone belts 46 carbonatite complex 46 Keg River 46 gas hydrates 46 technically recoverable oil 46 komatiitic 46 Bakken shales 46 sandstone 46 refugia 46 peat bogs 45 earth crust 45 subglacial 45 volcano sedimentary sequences 45 hydro fracturing 45 hydrothermal fluid 45 calcite formation 45 reservoir permeability 45 Copperstone Fault 45 felsic rocks 45 gooey bitumen 45 anomalous concentrations 45 drainage basins 45 forested watersheds 45 Kostenki 45 volcanic tuff 45 palaeochannels 45 unrisked resource potential 45 Lake Untersee 45 Tethys believes 45 Norris Geyser Basin 45 basalt lava 45 hydrogeologic 45 rugged topography 45 Utica shale 45 kimberlite occurrences 45 creatures inhabiting 45 Yegua sands 45 glacial till 45 Macondo wellhead 45 pore spaces 45 porphyry deposit 45 therizinosaur 45 disseminated sulphide mineralization 45 thermal vents 45 Ladyfern 45 Nukhul 45 Proterozoic basement 45 AKD# appraisal 45 preserved fossils 45 anticlinal structures 45 dyke swarm 45 paleontological discoveries 45 Yellowstone geysers 45 erosional 45 streambeds 45 terminal moraine 45 hydrothermally 45 undersea volcanoes 45 freshwater aquifer 45 Gas hydrates 45 intraplate 45 Fortification Creek 45 lacustrine 45 contiguous acreage 45 Transantarctic Mountains 45 embayment 45 China Dabie Mountains 45 Ogallala Aquifer 45 hydrocarbon saturation 45 Puajanca Zone 45 Explosive eruptions 45 REE deposit 45 Villeta T 45 upflow 45 tallgrass prairies 45 algal mats 45 Sarahsaurus 45 Oligocene reservoir 45 alluvial workings 45 Marcellus Shale geologic 45 orogenic gold deposits 45 Sediments 45 seabed unstable 45 diorites 45 sulfide minerals 45 foraminifera 45 bottomland forest 45 Shivee West 45 Bossier Haynesville 45 freshwater springs 45 Gakkel Ridge 45 Keathley Canyon block 45 prairie potholes 45 Cu Au mineralization 45 iron sulfide 45 dolomitic 45 silicate minerals 45 magmas 45 sequestering CO2 45 deepwater subsalt 45 sauropod skulls 45 Canadon Seco 45 Teshekpuk Lake 45 methane ethane 45 headwater stream 45 lunar craters 45 sandstone outcropping 45 Kebabangan 45 graben 45 glacially carved 45 Maastrichtian 45 bristlecone pine 45 Palaeozoic sedimentary 45 lavas 45 Niobrara Shale 45 Salar de Atacama 45 tungsten mineralization 45 Karoo sediments 45 acquifers 45 Montney fairway 45 bulk mineable gold 45 magnificent vistas 45 limestone 45 copper porphyries 45 underground salt caverns 45 Lower Montney 45 Upper Devonian 45 Colorado Piceance Basin 45 Wolfcamp 45 mule deer herd 45 lignite coal 45 cubic feet BCF 45 Mesaverde formation 45 unconformity uranium 45 alluvial deposits 45 andesitic volcanic rocks 45 shallow depths 45 Qaidam Basin 45 IOCG deposits 45 Triassic sequence 45 alpine terrain 45 Lower Tertiary 45 subseafloor 45 Pliocene 45 airborne geophysical anomaly 45 magma molten rock 45 Siberian Arctic 45 hogback 45 Kipawa Deposit 45 riparian habitats 45 astronomical objects 45 Vermilion Cliffs National 45 coalbed methane wells 45 Hydrothermal 45 sulphide zinc 45 basalt volcanic 45 polynya 45 Upper Shaunavon 45 paleontological 45 IP geophysical anomaly 45 lunar crust 45 metalliferous 45 Pyrrhotite 45 volcanic stratigraphy 45 hydrothermal venting 45 kaolinite 45 Gamburtsev 45 stratigraphic interval 45 tundra 45 silicified zone 45 St. Lawrence Lowlands 45 anthropogenic carbon dioxide 45 Ordovician 45 Twangiza Main 45 Miocene 45 paleontological dig 45 outcropping mineralized 45 Tertiary sediments 45 alunite 45 hydrothermal 45 bearing hydrothermal 45 asthenosphere 45 exhalite 45 Mistaken Point 45 Flemish Pass 45 pelitic gneiss 45 paleomagnetic 45 lithological units 45 coldwater streams 45 Ice Age mammals 45 outcroppings 45 Yukon Tanana 45 Tertiary volcanics 45 Ni Cu mineralization 45 dolerite 44 CBM wells 44 bottomland hardwoods 44 geyser basins 44 multicellular creatures 44 Gongondy 44 limestones 44 esker 44 Paleozoic 44 alaskite bodies 44 gabbro sill 44 diamondiferous kimberlite pipes 44 Yaxtche zone 44 tetrapods evolved 44 zeolites 44 seismically defined 44 zircons 44 carbonate reservoirs 44 ounces Moz. 44 river drainages 44 dolostone 44 Cib Haz 44 geophysical signatures 44 ultradeep 44 hydrothermal springs 44 lithium bearing brines 44 Cana Woodford Shale 44 Fossilized bones 44 driest deserts 44 Miocene interval 44 Marcellus wells 44 continental crust 44 pyroclastics 44 Mamm Creek 44 drilling muds 44 brook trout populations 44 evaporite deposits 44 Athabasca oilsands 44 grade bulk mineable 44 abiotic 44 Middle Awash 44 evergreen forests 44 mineral olivine 44 geochemists 44 prairie grassland 44 vertical extents 44 Hueco Bolson 44 large oceanic plateaus 44 methane 44 refugium 44 structural lineaments 44 colluvial 44 rhyolites 44 gabbro dykes 44 epithermal deposit 44 injection wells 44 underground stopes 44 volcano sedimentary rocks 44 upland habitats 44 Late Cretaceous 44 spruce fir forests 44 limestone formations 44 Tres Juanes Norte 44 Horizontal Loop Electromagnetic 44 IOCG mineralization 44 geologic hydrologic 44 photosynthetic microbes 44 technically recoverable 44 lobe finned fishes 44 Heruga 44 fracturing fluids 44 Arsenic occurs 44 Frio sands 44 Klaza Zone 44 fine grained sedimentary 44 Alaskite 44 sulphide lenses 44 reservoir 44 Sinus Meridiani 44 Marcellus Shale formation 44 Tropical rainforests 44 mule deer herds 44 supergene mineralization 44 igneous intrusion 44 Strathcona Fiord 44 barrens 44 grade tungsten skarn 44 amplitude anomalies 44 Endrod 44 Raukumara 44 geologic geophysical 44 Geologically speaking 44 Jurassic sandstone 44 Moxa Arch 44 anhydrite 44 Pinon Field 44 alpine lakes 44 nickel sulphide deposits 44 downthrown side 44 peridotites 44 heterogeneities 44 Ediacara 44 added Stengell 44 granite gneiss 44 magma chambers 44 Wolfcamp formations 44 radiometric readings 44 Gubik 44 copper molybdenum porphyries 44 Cretaceous carbonate 44 Granite Wash formation 44 Norne field 44 siliceous breccia 44 Wona SW Zone 44 km3 44 contaminate aquifers 44 dinosaur specimens 44 mineralized zones intersected 44 Chukchi Cap 44 gasify coal 44 dyke swarms 44 crustal rocks 44 gravity anomalies 44 Roncott 44 molten magma 44 Lower Tertiary trend 44 photosynthetic organisms 44 volcanoclastic rocks 44 microhabitats 44 liquid hydrocarbons 44 juniper forests 44 geophysically 44 Gething Formation 44 carbonate reef 44 Quaternary 44 Au Cu mineralization 44 Piceance Uinta 44 drumlins 44 skarn mineralization 44 Pekisko formation 44 grassy meadows 44 aquifer 44 unrisked reserve 44 subalpine meadows 44 stratigraphically 44 toxic hydrogen sulfide 44 tufa 44 placer deposits 44 albitite 44 Santonian 44 Coal Seam 44 mastodon fossils 44 Uravan Mineral Belt 44 volcanic caldera 44 Malrok 44 Carbon sequestration 44 coniferous forest 44 sage grouse breeding 44 glaciers retreated 44 Hingeline 44 lithology 44 basalt cliffs 44 fractured shale formations 44 carboniferous 44 erosional window 44 mineralized quartz veins 44 biodiversity hotspot 44 alluvial aquifer 44 extract coalbed methane 44 Paymaster Canyon 44 Proved Undeveloped 44 solar nebula 44 zircon crystals 44 lithium brines 44 swine manure 44 heap leachable 44 Kometan 44 Fairydell Bon Accord 44 smoker vents 44 oceanic crust 44 mineralized widths 44 epithermal gold mineralization 44 olivines 44 Fram Strait 44 glacial landforms 44 glasslike logs 44 pinnacle reef 44 Ca2 44 Gippsland Basin 44 Earth crust 44 sulfide deposits 44 microbial ecosystems 44 subsurface ocean 44 Vasari fresco 44 lakebed sediments 44 Macasty shale 44 Martian volcanoes 44 interstellar molecules 44 riparian ecosystems 44 Yellowstone Caldera 44 open pittable gold 44 Niobrara formations 44 Ordovician Silurian 44 Marge Vein 44 Puna Plateau 44 lava flows 44 Cretaceous sands 44 subalpine 44 lithological contacts 44 Athabaska Basin 44 quartz vein stockworks 44 OGIP 44 felsic volcanics 44 auriferous zones 44 colorless odorless radioactive 44 hominid fossils 44 conifer forest 44 terrestrial biosphere 44 glaciers receded 44 mantle convection 44 amphibolites 44 temperate grasslands 44 Middle Miocene 44 metal zonation 44 sulfidic 44 coalbed methane 44 El Domo deposit 44 Skarn Zones 44 limestone outcroppings 44 hydrocarbon saturations 44 Notikewin 44 Archean aged 44 shale siltstone 44 Viola Limestone 44 Miocene reservoirs 44 abyssal plains 44 sulfur springs 44 advanced argillic alteration 44 granite outcroppings 44 Martian crust 44 Cusiana 44 Toba eruption 44 lunar soil 44 silica breccia 44 southern supercontinent 44 wetlands flood plains 44 Wasatch Plateau 44 electro magnetic anomalies 44 volcanic rock 44 Gibson Gulch 44 Ozark Plateau 44 forams 44 Proterozoic sediments 44 ultramafic rock 44 wetland ecosystems 44 open pitable 44 prehistoric crocodiles 44 Permian basin 44 Plesiosaurs 44 Book Cliffs 44 penetrating electromagnetic 44 Paleozoic carbonate 44 Loma Montosa 44 mineralized lenses 44 disseminated sulfide 44 marine reptiles 44 mineralized hydrothermal 44 onshore Chicontepec 43 Superstition Wilderness 43 Piceance Basins 43 Meteor Crater 43 aeromagnetic anomaly 43 malachite mineralization 43 geophysics geology 43 Wattenberg Field 43 erodable 43 sylvite 43 olivine 43 clasts 43 chemosynthetic 43 solidified lava 43 unlined pits 43 stalactite 43 mineralogical composition 43 bearing stratigraphy 43 carbonate globules 43 Devonian Shale 43 Kul Bas 43 Appalachian basin 43 alpine ecosystems 43 Bossier Shale 43 fossil specimens 43 granitoid rocks 43 hot springs geysers 43 outcrop exposures 43 coalbed methane CBM 43 Petroglyphs