Geologic units in Sanpete county, Utah

Alluvium and colluvium (Quaternary) at surface, covers 26 % of this area

Alluvium and colluvium

North Horn and Canaan Peak Formations (Late Cretaceous to Paleocene) at surface, covers 20 % of this area

North Horn and Canaan Peak Formations.

Flagstaff Formation (Late Paleocene to Early Eocene) at surface, covers 13 % of this area

Flagstaff Formation.

Flagstaff Limestone (Late Paleocene to Early Eocene) at surface, covers 11 % of this area

Flagstaff Limestone.

Green River Formation (Eocene) at surface, covers 6 % of this area

Green River Formation.

Glacial deposits (Quaternary) at surface, covers 5 % of this area

Glacial deposits

Laguna Springs Latite, Tintic Mountain Group, Packard Quartz Latite, and Apex Conglomerate (Late Eocene to Oligocene) at surface, covers 4 % of this area

Laguna Springs Latite, Tintic Mountain Group (latite, porphyry & tuff), Packard Quartz Latite, and Apex Conglomerate.

Mesaverde Group (Late Cretaceous) at surface, covers 4 % of this area

Mesaverde Group (Price River Fm, Castlegate Ss, Blackhawk Fm (coal), and Star Point Ss).

Duchesne River, Uinta and Bridger Formations (Late Eocene to Early Oligocene) at surface, covers 2 % of this area

Duchesne River, Uinta and Bridger Formations

North Horn Formation (Late Cretaceous to Eocene) at surface, covers 2 % of this area

North Horn Formation.

Alluvial materials, Axtell and Harkers Formations (Pliocene to Quaternary) at surface, covers 1 % of this area

Alluvial materials, Axtell and Harkers Formations

Indianola Formation (Cretaceous) at surface, covers 1 % of this area

Indianola Formation.

Price River Formation (Late Cretaceous) at surface, covers 0.9 % of this area

Price River Formation.

Arapien Shale (Middle Jurassic) at surface, covers 0.9 % of this area

Arapien Shale (Summerville Formation, Entrada Sandstone and Carmel Formation).

Landslides (Quaternary) at surface, covers 0.8 % of this area

Landslides

Mesaverde Group (Late Cretaceous) at surface, covers 0.3 % of this area

Mesaverde Group.

Older alluvial deposits (Quaternary) at surface, covers 0.2 % of this area

Older alluvial deposits

Eolian deposits (Quaternary) at surface, covers 0.2 % of this area

Eolian deposits

Morrison Formation (Late Jurassic) at surface, covers 0.1 % of this area

Morrison Formation.

Mancos Shale (Late Cretaceous) at surface, covers < 0.1 % of this area

Mancos Shale (Masuk Shale Mbr, Emery Sandstone Mbr, Blue Gate Shale Mbr, Ferron Sandstone Mbr, and Tununk Shale Mbr).

Salt Lake Formation (?) and other Basin & Range valley-filling alluvial, lacustrine, and volcanic materials (Middle Miocene to Late Pliocene) at surface, covers < 0.1 % of this area

Salt Lake Formation (?) and other Basin & Range valley-filling alluvial, lacustrine, and volcanic materials. Valley fill is more than 13,000 feet thick in the central part of Utah Valley.

Rhyolites (Pliocene) at surface, covers < 0.1 % of this area

Rhyolites