SHERMAN GRANITE (AGE 1,415 TO 1,435 Ma)--In Medicine Bow and Laramie Mountains.  Ys
LARAMIE ANORTHOSITE COMPLEX--In Laramie Mountains
  Pyroxene and hornblende syenite--Age 1,435 Ma.  Yls
  Anorthosite and norite.  Yla
RHYOLITE TO DIABASE PORPHYRY DIKES (1,400 Ma).  Yd