ICE POINT CONGLOMERATE--Reddish-brown conglomerate, chiefly of Paleozoic rock
     fragments.  Tip
WASHAKIE FORMATION (AGE ABOUT 43 TO 44 Ma)--Gray, green, tan, and dull-red
     tuffaceous arkosic sandstone and claystone.  Twa
WAGON BED FORMATION (AGE ABOUT 45 TO 49 Ma)
  Southwest and central Wyoming--Green and gray tuffaceous claystone, sandstone, and con-
     glomerate; some uranium-phosphate marlstone and variegated bentonitic claystone. Local-
     ly contains oil shale between Wind River and Bighorn Basins.  Twb
  Central Wyoming (west side of Laramie Mountains)--Dull-green siliceous bentonitic claystone
     and tuff; giant granite boulder conglomerate in tuffaceous matrix.  Twb