GROS VENTRE FORMATION
  Thrust belt--Greenish-gray micaceous shale.  O_
  North Wyoming--Soft green micaceous shale (Upper and Middle Cambrian Park Shale
     Member), underlain by blue-gray and yellow mottled hard dense limestone (Middle Cam-
     brian Death Canyon Limestone Member), and soft green micaceous shale (Middle Cam-
     brian Wolsey Shale Member).  O_, _r, Pzr
CAMBRIAN ROCKS--South Wyoming
  South flank of Granite Mountains--Blue-gray and yellow mottled hard dense limestone in-
     terbedded with soft green micaceous shale; dull-red quartzitic sandstone at base.  _r, Pzr
  On and south of Rawlins uplift--Glauconitic quartzitic sandstone.  _r, Pzr