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Home , Bridger Formation, Fort Union Formation, Morrison Formation, Tatman Formation, Thermopolis Shale, Wasatch Formation

STRATIGRAPHIC NOMENCLATURE CHART OF THE LARAMIDE BASINS,

OVER- GREATER GREEN BASIN WIND BIGHORN POWDER HANNA DENVER

SYSTEM THRUST Green River Basin RIVER BASIN RIVER BASIN BASIN Age Rock Springs Great Divide Washakie AND BELT BASIN BASIN (Ma) North South Uplift Basin Basin

ERA SERIES and West and East 0.01 Ash at Shell Creek Canyon

Lava Creek Lava Creek Lava Creek Lava Creek Lava Creek Lava Creek Lava Creek

Pleistocene B ash B ash B ash B ash B and A ash B and A ash Bishop ash B ash

Alkalic extrusive and intrusive rocks Mesa Falls ash

1.65

Pliocene

5 ?

Camp Davis Fm

Salt Formation Teewinot Ogallala Fm (?) Formation Split Rock Formation Miocene and Miocene Miocene and Browns Park rocks Browns Park rocks Oligocene rocks Formation Formation

? Arikaree

Intrusive igneous rocks Formation 24 ? ? ? Split Rock Formation Cgl Cgl ? White White River Bishop Oligocene Bishop Bishop River Brule Conglomerate Formation Conglomerate Conglomerate Formation Lower Lower Fm Part part Chadron

White River Formation White River Fm Fm ? ? 38 ? Ice Point Conglomerate White River Group C E N O Z I

TERTIARY Adobe Town Mbr

? ? Kinney rocks Tepee Trail Rim Intrusive Fm igneous Mbr Wagon Bed Fm

Bridger Fm Washakie Fowkes rocks Formation Godiva Aycross Aycross Formation

Formation Bed Wagon Wapiti Fm ? Rim Mbr Formation Formation Eocene

Laney Member Fm Laney Member Green River Fm ? Cgl Cathedral Cathedral ? ? Wilkins Cathedral Bluffs Bluffs Bluffs Peak Tongue Tongue T

Member Fm Wasatch

Wilkins Peak Member Farson Ss Tipton Tipton Green River Fm Member River Tongue Member Alkali Wind River

River Fm Wind River Creek Formation Formation Niland Tongue Niland Tongue Tongue Pass Peak Fm Wasatch Luman T Luman Tongue Willwood Battle Spring Formation Green Diamictite and Main Moncrief Green Main body of Wasatch Fm Main body of Wasatch Formation body of Mbr Wasatch Main body of Wasatch Fm Wasatch Wasatch Formation Wasatch Formation Fm Wasatch Kingsbury Cgl ? Formation Indian Meadows Fm Mbr 55 Chappo Member Shotgun Conglomerate of Sublette Range Mbr Hoback Fort Union Fort Union Fort Union Fort Union Waltman Fort Union Member Shale Formation Evanston Fm Formation Formation Formation Member Formation Formation Lebo Member

Lower part Tullock Member Fort Union Formation ? Fort Union Fm Ferris 66 Formation Harebell Lance Lance Lance Lance Formation Formation Lance ? Lance Lance Medicine Bow Formation Fm Fm Formation Formation Formation Formation Fox Hills Fox Hills Lewis Meeteetse Fox Hills Sandstone Fox Hills Sandstone Sandstone Sandstone Shale Fox Hills Sandstone Fox Hills Sandstone Fox Hills Sandstone Formation

Lewis Shale Lewis Shale Lewis Shale Meeteetse Meeteetse Lewis Shale Formation Formation Lewis Almond Almond Almond Almond Lewis Sh Shale Formation Formation Formation Lewis Sh Fm

Teapot Bearpaw Shale Pine Ridge Pine Ridge Sandstone Group Pine Ridge Group Group Group Group Teapot Ss Teapot

Ericson Ericson Sandstone Sandstone Member Mbr Fm Ss Mbr Sandstone Formation

Middle Pierre Rock member Pierre Allen Shale Allen Ridge Allen Ridge River Sandstone Sandstone Shale Ridge Formation Formation Parkman Ss Mbr Formation Mesaverde Mesaverde Fm Mesaverde Wallace Creek T Mesaverde Formation Parkman of Ss Mbr Formation Fales Member Haystack Haystack Sussex

Mesaverde Mountains Mountains Mesaverde Ss Mbr Rock Springs Rock Springs Formation Formation Mesaverde Formation Formation Formation

Mesaverde Shannon Mesaverde Ss Mbr Steele Upper Haystack Mountains Shale ? Adaville Sohare Formation Formation Blair Blair Steele Formation Cody Steele Formation Shale Cody Shale Shale Shale Cody Shale Niobrara Niobrara Cody Formation Formation Hilliard Bacon Baxter Baxter Baxter Shale Shale Ridge Sandstone Shale Shale Shale CRETACEOUS Niobrara Niobrara Blind Formation Formation Bull Cody Shale Carlile Formation Carlile Frontier Frontier Frontier Frontier Frontier Frontier Shale Shale Frontier Frontier Frontier Frontier Frontier Greenhorn Greenhorn Formation Formation Formation Fm Formation Formation Fm Belle Belle Fourche Formation Formation Formation Fourche Formation Formation Formation Shale Shale Sage Junction Formation Aspen Mowry Mowry Mowry Mowry Mowry Mowry Mowry Mowry Mowry Shale Shale Shale Shale Shale Shale Shale Shale Shale Shale Shale

Quealy Aspen

M E S O Z I C Fm ? 96 Muddy Cokeville Muddy Sandstone Muddy Sandstone Muddy Sandstone Muddy Sandstone Muddy Sandstone Muddy Sandstone Newcastle Muddy Sandstone Muddy Sandstone Fm Ss Ss Bear River Skull Thomas Thermopolis Fm

Wayan Formation Thermopolis Shale Thermopolis Shale Thermopolis Shale Thermopolis Shale Thermopolis Shale Creek Thermopolis Shale Thermopolis Shale Fork Fm Shale Shale Smiths Bear River Fall Formation Fall River River Gp Gp Formation Smoot Formation Fm Lower Cretaceous Draney Cloverly Cloverly Cloverly Cloverly Cloverly Cloverly Cloverly Cloverly Cloverly Bechler Formation Formation Formation Formation Formation Formation Formation Formation Formation Conglomerate Peterson Lakota Lakota Gannett Group Limestone Fm Formation Inyan Kara Ephraim Inyan Kara Conglomerate 138 Morrison Morrison Morrison Formation Morrison Formation Morrison Formation Morrison Formation Morrison Formation Morrison Formation Morrison Formation Morrison Formation Upper Formation Formation Stump Formation

Preuss Sandstone or Redbeds Sundance Sundance Sundance Sundance Sundance Sundance Sundance Sundance Sundance Sundance Formation Formation Formation Formation Formation Formation Formation Formation Formation Formation JURASSIC Twin Creek Limestone

Gypsum Spring Gypsum Spring Gypsum Gypsum Gypsum Spring Gypsum Formation Formation Spring Fm Spring Fm Formation Spring Fm

JURASSIC (?) AND Nugget Nugget Nugget Nugget Nugget Nugget Nugget Nugget (?) 205 Sandstone Sandstone Sandstone Sandstone Sandstone Sandstone Sandstone Ss Ankareh Popo Agie Popo Agie Popo Agie Popo Agie Popo Agie Fm Formation Fm or Mbr Fm or Mbr Fm or Mbr Fm or Mbr or Mbr Upper Crow Mountain Crow Mountain Crow Mountain Crow Mountain Crow Jelm Mountain Triassic Ss or Ss Mbr Ss or Ss Mbr Ss or Ss Mbr Ss or Ss Mbr Ss or Ss Mbr Formation Thaynes Chugwater Chugwater Chugwater Alcova Ls Alcova Ls Alcova Ls Alcova Ls Limestone Alcova Ls Formation Formation Formation or Ls Mbr or Ls Mbr or Ls Mbr or Ls Mbr or Ls Mbr Chugwater or Formation or Formation or Formation Formation Chugwater Group Chugwater Group Red Peak Red Peak Chugwater Group Red Peak Red Peak Red Peak of

TRIASSIC Lower Woodside Fm or Mbr Fm or Mbr Fm or Mbr Fm or Mbr Fm or Mbr Spearfish Darton Shale (1908) Chugwater Chugwater Group or Formation Triassic Chugwater Group or Formation Formation Dinwoody Dinwoody Dinwoody Dinwoody Dinwoody Dinwoody Dinwoody Dinwoody of Darton Goose Goose Goose Goose Goose Goose Formation Formation Formation Formation Fm Fm Formation Formation (1908) ~240 ? ? ? ? ? ? ? ? ?

Formation Forelle Forelle Limestone Phosphoria Phosphoria Phosphoria Phosphoria Limestone Phosphoria Phosphoria Phosphoria Egg Formation Egg Formation Egg Formation Egg Egg Egg Formation Formation Formation Formation and and and and and and and and related related related related Minnekahta Satanka related rocks related rocks related rocks related rocks Satanka rocks Formation rocks Formation rocks Formation rocks Formation Formation Limestone Formation Shale Shale Opeche PERMIAN Shale ? ? ? ? Possible uppermost Minnelusa equivalent Casper Casper Hartville

290 Weber Weber Upper Wells Sandstone Minnelusa Formation Formation Sandstone Tensleep Tensleep Tensleep Tensleep Morgan Morgan Sandstone Tensleep Sandstone Sandstone Sandstone Formation Middle Formation Formation Ss ? ? ? ? ? ? ? ? ? Fountain Pennsylvanian Formation Fountain Fm Round Valley Round Valley Fm Lower Amsden Amsden Limestone Limestone Amsden Amsden Amsden Amsden Amsden Formation Formation Formation Formation Formation PENNSYLVANIAN Pennsylvanian Formation Formation Formation ~330 Upper

Madison Mississippian Madison Madison Madison Madison Madison Madison Madison Pahasapa Madison Lower Group rocks Limestone Limestone Limestone Limestone Madison Limestone Limestone Limestone Guernsey Limestone Limestone Formation

Mississippian Limestone MISSISSIPPIAN 360 Englewood Englewood Limestone Limestone

Cottonwood Fremont Canyon Fremont Canyon Upper Canyon Sandstone Sandstone Member Darby Darby Formation

DEVONIAN Darby Fm Darby Fm Darby Formation Darby Formation Darby Formation Formation P A L E O Z I C L A P Lower Beartooth Butte Devonian Formation 410 Upper and Laketown

Dolomite RIAN SILU- Middle 435 Upper Bighorn Bighorn Bighorn Whitewood Bighorn Dolomite Bighorn Bighorn Dolomite Dolomite Dolomite Dolomite Dolomite Dolomite Middle Harding Ss Winnipeg Ordovician equivalent Formation Lower

ORDOVICIAN Ordovician 500 Gallatin Upper Gallatin Gallatin Gallatin Gallatin Gallatin Gallatin Gallatin Limestone Deadwood Limestone Limestone Limestone Limestone Limestone Limestone Limestone and Formation Cambrian equivalent rocks Cambrian Gros Ventre rocks Gros Ventre Formation Gros Gros Gros Ventre Formation Flathead Flathead Sandstone Gros Ventre Gros Ventre Ss Ventre Ventre Formation Flathead Sandstone Formation Formation Formation Formation

CAMBRIAN Lower Flathead Sandstone Cambrian Flathead Sandstone Flathead Flathead Flathead Sandstone Flathead Flathead Sandstone Sandstone Sandstone Sandstone ~570 Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Precambrian rocks Modified from Love and others (1993)

EXPLANATION REFERENCE

Unconformity (generally of regional extent) Abbreviations used in the columns 2012 Production Love, J.D., Christiansen, A.C., and Ver Ploeg, A.J., comps.,1993, Stratigraphic chart showing Phanerozoic nomenclature for Cgl Conglomerate Mbr Member Oil > 500,000 Bbls Hiatus the State of Wyoming: Geological Survey of Wyoming Fm Formation Sh Shale Natural Gas > 1,000 MMcf [Wyoming State Geological Survey] Map Series MS-41. Rocks in subsurface only Gp Group Ss Sandstone Ls Limestone T Tongue Coalbed Natural Gas > 1,000 MMcf