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

Geologic units in Utah county, Utah

[Additional scientific data in this geographic area]

Devonian sedimentary rocks in central Utah (Devonian) at surface, covers 0.2 % of this area

Lithology: limestone; sandstone; dolostone (dolomite)

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

Lithology: conglomerate; sandstone; fine-grained mixed clastic; limestone; coal

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

Lithology: clay or mud; sand; gravel; silt

Tertiary (1) sedimentary rocks in Uinta Mountains-Unita Basin region (Early to Middle Eocene) at surface, covers 4 % of this area

Lithology: fine-grained mixed clastic; limestone; coal

Permian (1) sedimentary rocks in central Utah (Early Permian) at surface, covers 0.9 % of this area

Lithology: sandstone; limestone

Silurian carbonate rocks in central Utah (Late Ordovician to Silurian) at surface, covers 0.1 % of this area

Lithology: dolostone (dolomite)

Oligocene volcanic rocks (Late Eocene to Oligocene) at surface, covers 6 % of this area

Lithology: dacite; rhyolite; andesite; basalt

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

Lithology: alluvium

Cambrian quartzite in central Utah (Early to Middle Cambrian) at surface, covers 0.4 % of this area

Lithology: arenite; conglomerate

Pliocene and Quaternary alluvial material (Pliocene to Quaternary) at surface, covers 0.3 % of this area

Lithology: alluvium

Tertiary (1) sedimentary rocks in central Utah (Late Paleocene to Early Eocene) at surface, covers 1 % of this area

Lithology: limestone; mudstone; fine-grained mixed clastic; dolostone (dolomite)

Ordovician sedimentary rocks in central Utah (Ordovician) at surface, covers 0.1 % of this area

Lithology: limestone; dolostone (dolomite)

Quaternary glacial deposits (Quaternary) at surface, covers 2 % of this area

Lithology: glacial drift

Jurassic (2) sedimentary rocks in central Utah (Late Jurassic) at surface, covers < 0.1 % of this area

Lithology: conglomerate; fine-grained mixed clastic

Tertiary (3) sedimentary rocks in Uinta Mountains-Uinta Basin region (Middle Eocene to Early Oligocene) at surface, covers 2 % of this area

Lithology: sandstone; mudstone; siltstone; pyroclastic

Cretaceous and Tertiary sedimentary rocks in central Utah (Late Cretaceous to Eocene) at surface, covers 5 % of this area

Lithology: fine-grained mixed clastic; sandstone; conglomerate; limestone

Jurassic (1) sedimentary rocks in central Utah (Middle Jurassic) at surface, covers 0.3 % of this area

Lithology: mudstone; sandstone; limestone; evaporite

Mississippian (3) sedimentary rocks in central Utah (Mississippian) at surface, covers 1 % of this area

Lithology: shale; limestone

Tertiary (1) sedimentary rocks in southeastern Utah (Late Paleocene to Early Eocene) at surface, covers 0.4 % of this area

Lithology: limestone; medium-grained mixed clastic; dolostone (dolomite)

Younger Precambrian metamorphic rocks in central Utah (Proterozoic Z) at surface, covers 0.3 % of this area

Lithology: sandstone; conglomerate; limestone

Permian (2) sedimentary rocks in central Utah (Permian) at surface, covers 0.5 % of this area

Lithology: limestone; mudstone; sandstone; phosphorite; dolostone (dolomite)

Pennsylvanian sedimentary rocks in central Utah (Pennsylvanian) at surface, covers 0.1 % of this area

Lithology: limestone; fine-grained mixed clastic

Cretaceous (3) sedimentary rocks in central Utah (Late Cretaceous) at surface, covers 0.8 % of this area

Lithology: sandstone; mudstone; conglomerate

Triassic (1) sedimentary rocks in Salt central Utah (Early Triassic) at surface, covers < 0.1 % of this area

Lithology: siltstone; mudstone; limestone; sandstone

Cretaceous (2) sedimentary rocks in central Utah (Cretaceous) at surface, covers 0.2 % of this area

Lithology: sandstone; mudstone; conglomerate; coal

Tertiary intrusive rocks in Salt Lake City-Coalville-Randolph region (Late Eocene to Oligocene) at surface, covers 0.5 % of this area

Lithology: granodiorite; quartz monzonite; granite; diorite

Mississippian (2) sedimentary rocks in central Utah (Mississippian) at surface, covers 4 % of this area

Lithology: limestone; sandstone; mudstone; phosphorite

Tertiary (4) sedimentary rocks in central Utah (Middle Miocene to Late Pliocene) at surface, covers 0.4 % of this area

Lithology: medium-grained mixed clastic; alluvium; limestone; pyroclastic

Quaternary alluvium and colluvium (Quaternary) at surface, covers 16 % of this area

Lithology: alluvium; colluvium

Triassic and Jurassic sedimentary rocks in central Utah (Early Jurassic) at surface, covers 0.1 % of this area

Lithology: sandstone

Triassic (2) sedimentary rocks in central Utah (Middle to Late Triassic) at surface, covers < 0.1 % of this area

Lithology: mudstone; siltstone; sandstone; conglomerate; evaporite

Cretaceous and Tertiary sedimentary rocks in southeastern Utah (Late Cretaceous to Paleocene) at surface, covers 3 % of this area

Lithology: fine-grained mixed clastic; sandstone; conglomerate

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

Lithology: basalt; rhyolite

Upper Cambrian carbonate rocks in central Utah (Middle Cambrian to Early Ordovician) at surface, covers < 0.1 % of this area

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

Tertiary (1) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Late Paleocene to Early Eocene) at surface, covers < 0.1 % of this area

Lithology: mudstone; conglomerate; limestone

Middle Cambrian shale and carbonate rocks in central Utah (Middle Cambrian) at surface, covers 0.9 % of this area

Lithology: dolostone (dolomite); limestone; shale

Tertiary intrusive rocks in central Utah (Late Eocene to Oligocene) at surface, covers 0.7 % of this area

Lithology: granodiorite; monzonite; quartz monzonite; monzodiorite; granite; diorite; quartz diorite; quartz monzodiorite

Quaternary marshes (Holocene) at surface, covers 0.7 % of this area

Lithology: biogenic sediment

Tertiary (3) sedimentary rocks in central Utah (Late Eocene to Early Oligocene) at surface, covers 0.9 % of this area

Lithology: sandstone; mudstone; siltstone; conglomerate

Pennsylvanian and Permian sedimentary rocks in central Utah (Pennsylvanian to Permian) at surface, covers 14 % of this area

Lithology: sandstone; limestone; medium-grained mixed clastic

Tertiary (2) sedimentary rocks in Uinta Mountains-Uinta Basin region (Eocene) at surface, covers 7 % of this area

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

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

Lithology: landslide

Mississippian (1) carbonate rocks in central Utah (Late Devonian to Mississippian) at surface, covers 0.7 % of this area

Lithology: limestone; dolostone (dolomite)

Cretaceous (3) sedimentary rocks in Uinta Mountains-Uinta Basin region (Late Cretaceous) at surface, covers 1 % of this area

Lithology: sandstone; shale; coal

Miocene volcanic rocks (Late Oligocene to Middle Miocene) at surface, covers < 0.1 % of this area

Lithology: ash-flow tuff; basalt