Tcr   CRANDALL CONGLOMERATE--East flank of Absaroka Range
Tfu   FORT UNION FORMATION
Tdb   DEVILS BASIN FORMATION
TKp   PINYON CONGLOMERATE

                               SOUTHWEST

Tbi   BISHOP CONGLOMERATE
Twr   WHITE RIVER FORMATION
Twru    Upper conglomerate member
Toe   OLIGOCENE AND (OR) UPPER AND MIDDLE EOCENE ROCKS
Tip   ICE POINT CONGLOMERATE
Twa   WASHAKIE FORMATION
Twb   WAGON BED FORMATION
Tb    BRIDGER FORMATION
Tcg   CROOKS GAP CONGLOMERATE
Tgc   GRANITIC CONGLOMERATE ABOVE OR IN UPPER PART OF WASATCH
           FORMATION
      GREEN RIVER FORMATION
Tgl     Laney Member
Tgw     Wilkins Peak Member
Tgwt    Wilkins Peak Member and Tipton Shale Member or Tongue
Tgt     Tipton Shale Member or Tongue
Tglu    Luman Tongue
      WASATCH AND GREEN RIVER FORMATIONS
Twg     New Fork Tongue of Wasatch and Fontenelle Tongue or
           Member of Green River
Tw    WASATCH FORMATION
Twc     Cathedral Bluffs Tongue
Twn     Niland Tongue
Twm     Main body
Twlc    La Barge and Chappo Members
Tbw   TRANSITIONAL UNIT BETWEEN BATTLE SPRING AND WASATCH
           FORMATIONS
Tbs   BATTLE SPRING FORMATION
Tp    PASS PEAK FORMATION AND EQUIVALENTS
Tep   CONGLOMERATE OF ROARING CREEK (EOCENE OR PALEOCENE)