DESCRIPTION OF MAP UNITS
.2
Qu    Quaternary terrane



  TERTIARY VOLCANIC ROCK TERRANES
.7
Tv    Miocene and Pliocene volcanic rocks
.67
Tcv   Eocene rocks



  TERTIARY INTRUSIVE ROCK TERRANES
.89
Tri   Rhyolite
.13
Tg    Granite
.59
Tdc   Diorite complex


  
  CRETACEOUS INTRUSIVE ROCK TERRANES
.92
Kg    Granite
.112
Kgd   Granodiorite
.98
Kt    Tonalite



  PALEOZOIC SEDIMENTARY ROCK TERRANES

      Black shale
.102
Pza     Argillaceous and arenaceous rocks 
.111
Pzs     Primarily argilliaceous rocks

.110
Mf    Flysch
.117
Md      Drummond Mine Member of the Copper Basin Formation

      Carbonate rocks
.118
Pzp     Primarily carbonate rocks
.115
Pzc     Carbonate rocks

      Quartzite
.120
Pzr     Quartzite and other rocks
.121
Pzq     Quartzite



  PROTEROZOIC OR PALEOZOIC ROOF PENDANTS

.130
m     Metamorphic rock inclusions within Idaho Batholith
.135
YX    High-grade metamorphic rocks and felsic intrusive rocks 
      in the Pioneer gneiss dome