DESCRIPTION OF MAP UNITS .2 Q Unconsolidated sedimentary deposits (Quaternary units) TERTIARY IGNEOUS ROCK .7 Tmv Volcanic rocks (Miocene) .67 Tc Challis Volcanic Group (Eocene) .11 Ti Intrusive rocks (Eocene) - Including granite, rhyolite porphyry, dacite porphyry, and granodiorite CRETACEOUS INTRUSIVE BATHOLITH .92 Kgd Biotite granodiorite .112 Kgdk Hornblende-biotite granodiorite - Included leucocratic granite border phase PALEOZOIC SEDIMENTARY ROCKS Sun Valley Group (Lower Permian, Upper and Middle Pennsylvanian) .102 Pg4 Grand Prize Formation, member 4 (Lower Permian) .111 Pg3 Grand Prize Formation, member 3 (Lower Permian) .113 PIPg2 Grand Prize Formation, member 2 (Lower Permian to Middle Pennsylvanian) .117 IPg1 Grand Prize Formation, member 1 (Middle Pennsylvanian) .118 Pdu Dollarhide Formation, upper member (Lower Permian) .115 Pdm Dollarhide Formation, middle member (Lower Permian) .120 PIPdl Dollarhide Formation, lower member (Lower Permian to Middle Pennsylvanian) .121 Pww Wood River Formation, Wilson Creek Member (Lower Permian) .103 PIPwe Wood River Formation, Eagle Creek Member (Lower Permian to Middle Pennsylvanian) .104 IPwh Wood River Formation, Hailey Member (Middle Pennsylvanian) .110 Mcb Copper Basin Formation, undifferentiated (Lower Mississippian) Includes rocks west of the Pioneer thrust fault .109 Mcu Copper Basin Formation, upper part (Lower Mississippian) - Includes the Scorpion Mountain Formation of Paull and others (1972) and rocks equivalant to the Green Lake Limestone Member .108 Mcl Copper Basin Formation, lower part (Lower Mississippian) - Includes the Little Copper Member and Drummond Mine Limestone Member of Paull and others (1972) and Dover (1981) .114 Dm Milligen Formation (Upper and Lower Devonian) .116 DSO Devonian, Silurian, and Ordovician argillaceous rocks, undifferentiated Includes the Trail Creek and Phi Kappa Formations and unnamed rocks .121 DOC Devonian, Ordovician, and Cambrian calcareous rocks and quartzite Exposed in the Wildhorse and Dry Canyon inliers .122 Pzsr Salmon River assemblage (Devonian and Cambrian?) PIONEER MOUNTAINS METAMORPHIC CORE COMPLEX .123 OC Ordovician and Cambrian rocks, undifferentiated - Exposed only below the Pioneer thrust fault and Wildhorse detachment fault in the core of the Pioneer Mountains .129 Yu Quartzite, calc-silicate rocks, and schist (Middle Proterozoic) .128 Xw Gneiss complex of Wildhorse Creek (Early Proterozoic)