| Adaville Formation |
| Alkalic Extrusive and Intrusive Igneous Rocks |
| Alkalic Intrusive and Extrusive Igneous Rocks |
| Alluvium and Colluvium |
| Almond Formation |
| Ankareh Formation, Thaynes Limestone, Woodside Shale, and Dinwoody Formation |
| Anorthosite and Norite |
| Aspen Shale |
|
| Bacon Ridge Sandstone |
| Basalt Flows and Intrusive Igneous Rocks |
|
| Basalt Flows and Intrusive Igneous Rocks |
| Battle Spring Formation |
| Baxter Shale |
|
| Bear River Formation |
| Beartooth Mountains |
| Bighorn Dolomite |
| Bighorn Dolomite, Gallatin Limestone, Gros Ventre Formation, and Flathead Sandstone |
| Bishop Conglomerate |
| black |
|
| Blair Formation |
|
| Blind Bull Formation |
|
| Bridger Formation |
| Brule Member (White River Fm) |
| Bug Formation |
| Caldwell Canyon Volcanics |
| Camp Davis Formation |
| Carlile Shale |
| Casper and Fountain Formations |
|
| Casper Formation |
|
| Cathedral Bluffs Tongue (Wasatch) |
|
| Chadron Member (White River Fm) |
|
| Chugwater and Dinwoody Formations |
| Chugwater and Goose Egg Formations |
|
| Chugwater Formation or Group |
|
| Cloverly and Morrison Formations |
|
| Cloverly, Morrison, and Sundance Formations |
|
| Cloverly, Morrison, Sundance, and Gypsum Spring Formations |
| Cloverly, Morrisson, Sundance, and Gypsum Spring Formations and Nugget Sandstone |
|
| Coalmont Formation |
|
| Cody Shale |
| Cody Shale and Frontier Formation |
|
| Colter Formation |
|
| Conant Creek Tuff |
| Conglomerate |
|
| Conglomerate of Roaring Creek |
|
| Conglomerate of Sublette Range |
| Crandall Conglomerate |
|
| Crooks Gap Conglomerate |
| Dacite and Quartz Latite Intrusive and Extrusive Igneous Rocks |
| Deep Lake Group |
|
| Devils Basin Formation |
|
| Diamicitite and Sandstone (Wasatch) |
| Dune Sand and Loess |
|
| Ericson Sandstone |
| Evanston Formation |
|
| Everts Formation, Eagle Sandstone, and Telegraph Creek Formation |
|
| Ferris Formation |
|
| Forelle Limestone and Satanka Shale |
|
| Fort Union Formation |
|
| Fowkes Formation |
| Fox Hill Sandstone and Lewis Shale |
|
| Fox Hills Sandstone |
|
| Fox Hills Sandstone and Bearpaw Shale |
|
| Frontier Formation |
|
| Frontier Formation and Mowry and Thermopolis Shales |
| Gallatin Limestone, Gros Ventre Formation and equivalents, and Flathead Sandstone |
|
| Gannett Group |
| Glacial Deposits |
|
| Goose Egg Formation |
|
| Granite Gneiss |
|
| Granitic Conglomerate above or in upper part of Wasatch Formation |
|
| Granitic Rocks of 1,700Ma Age Group |
| Granitic Rocks of 2,000Ma Age Group |
| Granitic Rocks of 2,600Ma Age Group |
|
| Granodiorite of the Louis Lake Pluton |
| Gravel, Pediment, and Fan Deposits |
| green |
|
| Green River and Wasatch Formations |
|
| Greenhorn Formation and Belle Fourche and Mowry Shales |
|
| Greenhorn Formation and Belle Fourche Shale |
| Guernsey Formation |
|
| Gypsum Spring Formation, Nugget Sandstone, and Chugwater Formation |
|
| Gypsum Spring Formation, Nugget Sandstone, and Chugwater Formation |
|
| Hanna Formation |
|
| Harebell Formation |
| Hartville Formation |
| Heart Lake Conglomerate |
|
| Hilliard Shale |
|
| Hoback Formation |
|
| Hominy Peak Formation |
| Huckleberry Ridge Tuff or Yellowstone Group |
|
| Ice Point Conglomerate |
|
| Indian Meadows Formation |
|
| Intrusive and Extrusive Igneous Rocks |
| Intrusive and Extrusive Igneous Rocks |
|
| Intrusive Igneous Rocks |
|
| Jelm and Chugwater Formations, Forelle Limestone, and Satanka Shale |
|
| Kingsbury Conglomerate Member (Wasatch) |
|
| Kootenai and Morrison Formations and Ellis Group |
|
| LaBarge and Chappo Members (Wasatch) |
| Laketown Dolomite |
|
| Lance Formation |
|
| Lance Formation, Fox Hills Sandstone, Meeteetse Formation, and Bearpaw and Lewis Shales |
|
| Landslide Creek Formation |
|
| Landslide Deposits |
|
| Laney Member (Green River Formation) |
|
| Lebo and Tullock Members (Fort Union) |
|
| Lebo Member (Fort Union Formation) |
|
| Lewis Shale |
|
| Libby Creek Group |
|
| Lower Miocene and Upper Oligocene Rocks |
|
| Lower Miocene Rocks |
|
| Luman Tongue |
|
| Madison Limestone and Bighorn Dolomite |
|
| Madison Limestone and Darby Formation |
| Madison Limestone or Group |
|
| Madison Limestone, Darby Formation, Bighorn Dolomite, Gallatin Limestone, Gros Ventre Formation, and Flathead Sandstone |
| Madison Limestone, Darby or Three Forks, Jefferson, and Beartooth Formation, and Bighorn Dolomite |
|
| Mafic Intrusive Rocks |
| Mafic Intrusive Rocks |
| Mafic Intrusive Rocks |
|
| Main Body (Wasatch) |
|
| Medicine Bow Formation |
|
| Meeteetse Formation |
|
| Meeteetse Formation and Lewis Shale |
|
| Mesaverde Group |
|
| Mesozoic and Paleozoic Rocks |
| Metamorphosed Mafic and Ultramafic Rocks |
|
| Metasedimentary and Metavolcanic Rocks |
| Metasedimentary and Metavolcanic Rocks |
|
| Metasedimentary Rocks |
|
| Middle and Lower Eocene Rocks |
|
| Minnekahta Limestone and Opeche Shale |
|
| Minnelusa Formation |
|
| Miocene Rocks |
|
| Moncrief Member (Wasatch) |
|
| Mowry and Thermopolis Shales |
|
| Mowry Shale |
|
| New Fork Tongue of Wasatch and Fontenelle Tongue or Member of Green River |
|
| Newcastle Sandstone and Skull Creek Shale |
|
| Niland Tongue |
|
| Niobrara and Frontier Formations, and Mowry and Thermopolis Shales |
| Niobrara Formation |
|
| Niobrara Formation and Carlile Shale |
| Nugget Sandstone |
|
| Nugget Sandstone and Chugwater and Dinwoody Formations |
|
| Oldest Gneiss Complex |
|
| Oligocene and (or) Upper and Middle Eocene Rocks |
|
| Pahasapa and Englewood Limestones |
|
| Pass Peak Formation and Equivalents |
|
| Peridotite Intrusive Rocks |
|
| Phosphoria Formation and Related Rocks |
|
| Phosphoria, Wells, and Amsden Formations |
|
| Pierre Shale |
| pink |
|
| Pinyon Conglomerate |
|
| Playa Lake and other Lacustrine Deposits |
|
| Plutonic Rocks |
|
| Post-Eocene Sandstone and Conglomerate |
|
| Pyroxene and Horneblende Syenite |
|
| Quartz Diorite |
|
| Quartz Monzonite of North Yellowstone |
|
| Red Conglomerate on top of Hoback and Wyoming Ranges |
|
| Rhyolite Flows, Tuff, and Intrusive Igneous Rocks |
|
| Rhyolite to Diabase Porphyry Dikes |
|
| Rock Springs Formation |
|
| Sage Junction, Quealy, Cokeville, Thomas Fork, and Smiths Formations |
|
| Salt Lake Formation |
|
| Sedimentary Rocks |
|
| Sherman Granite |
|
| Shooting Iron Formation |
|
| Sohare Formation |
|
| Sohare Formation and Bacon Ridge Sandstone |
|
| Spearfish Formation |
|
| Steele Shale |
|
| Steele Shale and Niobrara Formation |
|
| Stump Formation, Preuss Sandstone or Redbeds , and Twin Creek Limestone |
|
| Sundance and Gypsum Spring Formations |
|
| Sundance and Gypsum Spring Formations and Nugget Sandstone |
|
| Sundance Formation |
|
| Sunlight Group |
| tan |
|
| Tatman Formation |
|
| Teewinot Formation |
|
| TenSleep Sandstone and Amsden Formation |
|
| Tepee Trail Formation |
| Terrace Gravel |
|
| Thorofare Creek and Sunlight Groups |
| Thorofare Creek and Sunlight Groups |
|
| Three Forks, Jefferson, and Beartooth Butte Formations and Bighorn Dolomite |
|
| Tipton Shale Member or Tongue (Green River Formation) |
|
| Tongue River and Lebo Members (Fort Union) |
|
| Tongue River Member (Fort Union) |
|
| Transitional Unit between Battle Spring and Wasatch Formations |
|
| Trout Peak Trachyandesite |
|
| Tullock Member (Fort Union) |
|
| Two Ocean and Langford Formations |
|
| Undivided Surficial Deposits |
| Upper Conglomerate Member (White River Fm) |
|
| Upper Miocene Rocks |
|
| Volcanic Conglomerate |
|
| Wagon Bed Formation |
|
| Wapiti Formation |
|
| Wasatch Formation (main body) |
|
| Washakie Formation |
|
| Washburn Group |
| Water Bodies |
|
| Wayan and Smiths Formations |
|
| Wells and Amsden Formations |
|
| White River Formation |
|
| Wiggins Formation |
|
| Wilkins Peak Member (Green River) |
|
| Wilkins Peak Member and Tipton Shale Member or Tongue (Green River) |
|
| Willwood Formation |
|
| Wind River and Indian Meadows Formations |
|
| Wind River Formation |
