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Mineral Resources > Online Spatial Data > Geology > by state > Utah Geology

Geologic units in Duchesne county, Utah

Triassic and Jurassic sedimentary rocks in Uinta Mountains-Uinta Basin region (Early Jurassic) at surface, covers 0.4 % of this area

Lithology: sandstone

Tertiary (3) sedimentary rocks in Uinta Mountains-Uinta Basin region (Middle Eocene to Early Oligocene) at surface, covers 46 % of this area

Lithology: sandstone; mudstone; siltstone; pyroclastic

Triassic (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Late Triassic) at surface, covers 0.4 % of this area

Lithology: shale; siltstone; sandstone; conglomerate

Quaternary glacial deposits (Quaternary) at surface, covers 17 % of this area

Lithology: glacial drift

Triassic (1) sedimentary rocks in Salt Uinta Mountains-Uinta Basin region (Early Triassic) at surface, covers 0.5 % of this area

Lithology: mudstone; siltstone; sandstone; evaporite; limestone

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

Lithology: alluvium

Jurassic (1) sedimentary rocks in Uinta Mountains-Uinta Basin region (Middle to Late Jurassic) at surface, covers 0.6 % of this area

Lithology: sandstone; mudstone; limestone; evaporite

Tertiary (1) sedimentary rocks in Uinta Mountains-Unita Basin region (Early to Middle Eocene) at surface, covers 0.2 % of this area

Lithology: fine-grained mixed clastic; limestone; coal

Pennsylvanian sedimentary rocks in Uinta Mountains-Uinta Basin region (Pennsylvanian) at surface, covers 0.3 % of this area

Lithology: dolostone (dolomite); sandstone

Jurassic (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Late Jurassic) at surface, covers 0.2 % of this area

Lithology: shale; sandstone; limestone; conglomerate

Cretaceous (1) sedimentary rocks in Uinta Mountains-Uinta Basin region (Cretaceous) at surface, covers 0.1 % of this area

Lithology: sandstone; shale

Younger Precambrian metamorphic rocks in Uinta Mountains-Uinta Basin region (Proterozoic Y) at surface, covers 9 % of this area

Lithology: arenite; shale; siltstone; mudstone; limestone; conglomerate

Cretaceous (3) sedimentary rocks in Uinta Mountains-Uinta Basin region (Late Cretaceous) at surface, covers 0.3 % of this area

Lithology: sandstone; shale; coal

Quaternary landslides (Quaternary) at surface, covers 0.3 % of this area

Lithology: landslide

Mississippian (1) carbonate rocks in Uinta Mountains-Uinta Basin region (Mississippian) at surface, covers 0.4 % of this area

Lithology: limestone

Pennsylvanian and Permian sedimentary rocks in Uinta Mountains-Uinta Basin region (Pennsylvanian to Permian) at surface, covers 0.8 % of this area

Lithology: arenite

Tertiary (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Eocene) at surface, covers 10 % of this area

Lithology: shale; limestone; oil shale; fine-grained mixed clastic; tuff

Permian (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Permian) at surface, covers 0.5 % of this area

Lithology: sandstone; carbonate; fine-grained mixed clastic; phosphorite

Tertiary (4) sedimentary rocks in Uinta Mountains-Uinta Basin region (Oligocene) at surface, covers 2 % of this area

Lithology: conglomerate

Cretaceous (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Late Cretaceous) at surface, covers 0.4 % of this area

Lithology: shale; sandstone

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

Lithology: eolian

Cambrian quartzite in Uinta Mountains-Uinta Basin area (Early to Middle Cambrian) at surface, covers 0.1 % of this area

Lithology: sandstone; shale; conglomerate

Quaternary alluvium and colluvium (Quaternary) at surface, covers 5 % of this area

Lithology: alluvium; colluvium

Mississippian (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Mississippian) at surface, covers 0.6 % of this area

Lithology: sandstone; limestone; shale; dolostone (dolomite)

Middle Cambrian shale and carbonate rocks in Uinta Mountains-Uinta Basin area (Middle Cambrian) at surface, covers < 0.1 % of this area

Lithology: limestone

Mississippian (3) sedimentary rocks in Uinta Mountains-Uinta Basin region (Mississippian) at surface, covers 0.2 % of this area

Lithology: shale; limestone; coal