KJs   CLOVERLY, MORRISON, AND SUNDANCE FORMATIONS--Includes wedge edge 
           of Nugget Sandstone in T. 34 N., R. 88 W., and T. 32 N., 
           R. 91 W.
KJg   CLOVERLY, MORRISON, SUNDANCE, AND GYPSUM SPRING FORMATIONS
K@    CLOVERLY, MORRISON, SUNDANCE, AND GYPSUM SPRING FORMATIONS AND
           NUGGET SANDSTONE
Js    SUNDANCE FORMATION
Jsg   SUNDANCE AND GYPSUM SPRING FORMATIONS 
J@    SUNDANCE AND GYPSUM SPRING FORMATIONS AND NUGGET SANDSTONE
J@gn  GYPSUM SPRING FORMATION AND NUGGET SANDSTONE--Wind River Basin
J@gc  GYPSUM SPRING FORMATION, NUGGET SANDSTONE, AND CHUGWATER 
           FORMATION
J@n   NUGGET SANDSTONE
J@nd  NUGGET SANDSTONE AND CHUGWATER AND DINWOODY FORMATIONS
@c    CHUGWATER FORMATION
@cd   CHUGWATER AND DINWOODY FORMATIONS
@Pcg  CHUGWATER AND GOOSE EGG FORMATIONS
@Pg   GOOSE EGG FORMATION
MzPz  MESOZOIC AND PALEOZOIC ROCKS--Shown in small areas of complex
           structure
        East flank of Absaroka Range--Dinwoody Formation, Phosphoria
           Formation and related rocks, Tensleep Sandstone, and Amsden
           Formation (Lower Triassic through Upper Mississippian)
        East flank of Bighorn Mountains--Cloverly, Morrison, Sundance,
           Gypsum Spring, Chugwater, and Goose Egg Formations (Lower
           Cretaceous through Permian)
Pp    PHOSPHORIA FORMATION AND RELATED ROCKS--Intertonguing equivalents
           of parts of Phosphoria are Park City Formation and Shedhorn
           Sandstone
P&Ma  PHOSPHORIA FORMATION AND RELATED ROCKS, TENSLEEP SANDSTONE, AND
           AMSDEN FORMATION
P&c   CASPER FORMATION
P&M   CASPER FORMATION AND MADISON LIMESTONE
PM    TENSLEEP SANDSTONE AND AMSDEN FORMATION
Mm    MADISON LIMESTONE OR GROUP--Includes wedge edge of Bighorn Dolomite
           in Tps. 43 and 44 N., Rgs. 85 and 86 W.
MD    MADISON LIMESTONE AND DARBY FORMATION
MDO   MADISON LIMESTONE, DARBY OR THREE FORKS, JEFFERSON, AND BEARTOOTH
           BUTTE FORMATIONS, AND BIGHORN DOLOMITE--Darby on west flank 
           of Washakie Range; Beartooth Butte only in Beartooth 
           Mountains
MO    MADISON LIMESTONE AND BIGHORN DOLOMITE--East side of Bighorn 
           Mountains
Pzr   MADISON LIMESTONE, DARBY FORMATION, BIGHORN DOLOMITE, GALLATIN 
           LIMESTONE, GROS VENTRE FORMATION, AND FLATHEAD SANDSTONE--East
           of Wind River Canyon consists of Madison, Bighorn, and 
           Cambrian rocks; in Rattlesnake Hills, east end of Granite
           Mountains, and north end of Laramie Mountains consists of 
           Madison Limestone and Cambrian rocks
DO    THREE FORKS, JEFFERSON, AND BEARTOOTH BUTTE FORMATIONS AND BIGHORN
           DOLOMITE
Ob    BIGHORN DOLOMITE
O_    BIGHORN DOLOMITE, GALLATIN LIMESTONE, GROS VENTRE FORMATION, AND
           FLATHEAD SANDSTONE
_r    GALLATIN LIMESTONE, GROS VENTRE FORMATION AND EQUIVALENTS, AND
           FLATHEAD SANDSTONE

                                 SOUTH

Kl    LANCE FORMATION
Kmb   MEDICINE BOW FORMATION
Kfh   FOX HILLS SANDSTONE
Kfl   FOX HILLS SANDSTONE AND LEWIS SHALE
Kle   LEWIS SHALE
Kp    PIERRE SHALE
Kmv   MESAVERDE GROUP--On Rawlins uplift includes Almond Formation, Pine
           Ridge Sandstone, Allen Ridge Formation, and Haystack Mountains
           Formation.  In Laramie Basin includes Pine Ridge Sandstone 
           and Rock River Formation
        Rock Springs uplift
Kal        Almond Formation
Ke         Ericson Sandstone
Kr         Rock Springs Formation
Kbl        Blair Formation