Geologic units in Morgan county, Utah

Additional scientific data in this geographic area

Wasatch and Evanston? Formations undivided (Late Cretaceous to Early Eocene) at surface, covers 28 % of this area

Wasatch and Evanston? Formations undivided.

Wasatch Formation (Late Paleocene to Early Eocene) at surface, covers 25 % of this area

Wasatch Formation.

Keetley Volcanics (Late Eocene to Oligocene) at surface, covers 15 % of this area

Keetley Volcanics

Evanston Formation (Late Cretaceous to Paleocene) at surface, covers 7 % of this area

Evanston Formation (lower part).

Alluvium and colluvium (Quaternary) at surface, covers 6 % of this area

Alluvium and colluvium

Farmington Canyon Complex and Little Willow Schist and Gneiss (Archean) at surface, covers 4 % of this area

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

Stump and Preuss Sandstones and Twin Creek Limestone (Middle to Late Jurassic) at surface, covers 3 % of this area

Stump and Preuss Sandstones and Twin Creek Limestone.

Weber Quartzite (Pennsylvanian to Permian) at surface, covers 2 % of this area

Weber Quartzite

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

Tintic Quartzite

Echo Canyon Conglomerate and Henefer Formation (Late Cretaceous) at surface, covers 1 % of this area

Echo Canyon Conglomerate and Henefer Formation.

Hambug Formation and Deseret Limestone (Mississippian) at surface, covers 1 % of this area

Hambug Formation and Deseret Limestone.

Glacial deposits (Quaternary) at surface, covers 1.0 % of this area

Glacial deposits

Thanes Formation, Woodside Shale, and Dinwoody Formation (Early Triassic) at surface, covers 0.9 % of this area

Thanes Formation, Woodside Shale, and Dinwoody Formation.

Nugget Sandstone (Early Jurassic) at surface, covers 0.7 % of this area

Nugget Sandstone.

Frontier Formation (Late Cretaceous) at surface, covers 0.7 % 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.

Bloomington Formation, Maxfield Limestone, and Ophir Formations (Middle Cambrian) at surface, covers 0.6 % of this area

Bloomington Formation, Maxfield Limestone, and Ophir Formations.

Lake Bonneville deposits (Quaternary) at surface, covers 0.5 % of this area

Lake Bonneville deposits

Aspen Shale and Kelvin Formation (Early Cretaceous) at surface, covers 0.5 % of this area

Aspen Shale and Kelvin Formation.

Alluvial materials, Axtell and Harkers Formations (Pliocene to Quaternary) at surface, covers 0.5 % of this area

Alluvial materials, Axtell and Harkers Formations

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

Gardison and Lodgepole Limestones.

St. Charles Formation and Nounan Dolomite (Middle Cambrian to Early Ordovician) at surface, covers 0.4 % of this area

St. Charles Formation and Nounan Dolomite.

Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation (Devonian) at surface, covers 0.4 % of this area

Beirdneau Sandstone, Hyrum Dolomite, and Water Canyon Formation.

Park City and Phosphoria Formations (Permian) at surface, covers 0.3 % of this area

Park City and Phosphoria Formations.

Older alluvial deposits (Quaternary) at surface, covers 0.3 % of this area

Older alluvial deposits

Morgan Formation and Round Valley Limestone (Pennsylvanian) at surface, covers 0.3 % of this area

Morgan Formation and Round Valley Limestone.

Ankareh Shale (Middle to Late Triassic) at surface, covers 0.3 % of this area

Ankareh Shale.

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

Morrison Formation.