Geologic units in Weber county, Utah

Alluvium and colluvium (Quaternary) at surface, covers 28 % of this area

Alluvium and colluvium

Wasatch and Evanston? Formations undivided (Late Cretaceous to Early Eocene) at surface, covers 22 % of this area

Wasatch and Evanston? Formations undivided.

Mutual Formation, Mineral Fork Tillite, and Big Cottonwood Formation (Proterozoic Y to Proterozoic Z) at surface, covers 7 % of this area

Mutual Formation, Mineral Fork Tillite, and Big Cottonwood Formation (16,000 feet thick).

Lake Bonneville deposits (Quaternary) at surface, covers 7 % of this area

Lake Bonneville deposits

Marshes (Holocene) at surface, covers 6 % of this area

Marshes

Mud and salt flats (Holocene) at surface, covers 6 % of this area

Mud and salt flats

Geertsen Canyon Quartzite (Early to Middle Cambrian) at surface, covers 4 % of this area

Geertsen Canyon Quartzite (upper part of the Bingham Group).

Farmington Canyon Complex and Little Willow Schist and Gneiss (Archean) at surface, covers 3 % of this area

Farmington Canyon Complex and Little Willow Schist and Gneiss (2.6 billion years old).

Bloomington Formation, Maxfield Limestone, and Ophir Formations (Middle Cambrian) at surface, covers 2 % of this area

Bloomington Formation, Maxfield Limestone, and Ophir Formations.

Keetley Volcanics (Late Eocene to Oligocene) at surface, covers 2 % of this area

Keetley Volcanics

Tintic Quartzite (Early to Middle Cambrian) at surface, covers 1 % of this area

Tintic Quartzite

Bloomington, Blacksmith, Ute, and Langston Formations (Middle Cambrian) at surface, covers 1 % of this area

Bloomington, Blacksmith, Ute, and Langston Formations.

Browns Hole, Mutual, Inkom Fms; Caddy Canyon Qtz, Papoose Creek, Kelley Canyon, Maple Canyon, and Perry Canyon Fms; Diamictite member (Proterozoic Z) at surface, covers 1.0 % of this area

Browns Hole (570 my), Mutual, Inkom Formations; Caddy Canyon Quartzite, Papoose Creek, Kelley Canyon, Maple Canyon, and Perry Canyon Formations; Diamictite member

Leatham Formation, Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation (Devonian) at surface, covers 0.9 % of this area

Leatham Formation, Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation.

Lodgepole Limestone (Mississippian) at surface, covers 0.9 % of this area

Lodgepole Limestone.

St. Charles Formation, Worm Creek Quartzite, and Nounan Dolomite (Middle Cambrian to Early Ordovician) at surface, covers 0.8 % of this area

St. Charles Formation, Worm Creek Quartzite, and Nounan Dolomite.

Older alluvial deposits (Quaternary) at surface, covers 0.8 % of this area

Older alluvial deposits

St. Charles Formation and Nounan Dolomite (Middle Cambrian to Early Ordovician) at surface, covers 0.7 % of this area

St. Charles Formation and Nounan Dolomite.

Laketown Dolomite (Silurian) at surface, covers 0.7 % of this area

Laketown Dolomite.

Glacial deposits (Quaternary) at surface, covers 0.6 % of this area

Glacial deposits

Hambug Formation and Deseret Limestone (Mississippian) at surface, covers 0.6 % of this area

Hambug Formation and Deseret Limestone.

Norwood Tuff (Late Eocene to Oligocene) at surface, covers 0.6 % of this area

Norwood Tuff.

Alluvial materials, Axtell and Harkers Formations (Pliocene to Quaternary) at surface, covers 0.6 % of this area

Alluvial materials, Axtell and Harkers Formations

Fish Haven Dolomite, Swan Peak Quartzite, and Garden City Limestone (Ordovician) at surface, covers 0.5 % of this area

Fish Haven Dolomite, Swan Peak Quartzite, and Garden City Limestone.

Gardison and Lodgepole Limestones (Mississippian) at surface, covers 0.5 % of this area

Gardison and Lodgepole Limestones.

Salt Lake Formation? (Middle Miocene to Late Pliocene) at surface, covers 0.3 % of this area

Tuffaceous sediments, mudstone, sandstone, valley fill.

Great Blue, Humbug and Deseret Formations (Mississippian) at surface, covers 0.3 % of this area

Great Blue, Humbug and Deseret Formations.

Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation (Devonian) at surface, covers 0.2 % of this area

Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation.

Wells Formation (Pennsylvanian to Permian) at surface, covers 0.2 % of this area

Wells Formation.

Facer Creek Formation (Proterozoic X) at surface, covers 0.1 % of this area

Metaquartzite and schist.

Park City and Phosphoria Formations (Permian) at surface, covers < 0.1 % of this area

Park City and Phosphoria Formations.

Wasatch Formation (Late Paleocene to Early Eocene) at surface, covers < 0.1 % of this area

Wasatch Formation.

Echo Canyon Conglomerate and Henefer Formation (Late Cretaceous) at surface, covers < 0.1 % of this area

Echo Canyon Conglomerate and Henefer Formation.

Frontier Formation (Late Cretaceous) at surface, covers < 0.1 % of this area

Frontier Formation - includes the following members: Upton Ss, Judd Sh, Grass Creek, Dry Hollow, Oyster Ridge Ss, Allen Hollow, Shale Member, Coalville Member, Chalk Creek, Springs Canyon, and Longwall Ss.

Clayton Peak and Pine Creek stocks (Late Eocene to Oligocene) at surface, covers < 0.1 % of this area

Clayton Peak and Pine Creek stocks.

Landslides (Quaternary) at surface, covers < 0.1 % of this area

Landslides

Nugget Sandstone (Early Jurassic) at surface, covers < 0.1 % of this area

Nugget Sandstone.