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

Geologic units in Salt Lake county, Utah

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

Lithology: rhyolite; dacite

Quaternary glacial deposits (Quaternary) at surface, covers 3 % of this area

Lithology: glacial drift

Cambrian quartzite in Salt Lake City-Coalville-Randolph region (Early to Middle Cambrian) at surface, covers < 0.1 % of this area

Lithology: arenite; conglomerate

Cretaceous (1) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Early Cretaceous) at surface, covers 0.9 % of this area

Lithology: sandstone; shale; siltstone

Cambrian quartzite in central Utah (Early to Middle Cambrian) at surface, covers 0.5 % of this area

Lithology: arenite; conglomerate

Older Quaternary alluvial deposits (Quaternary) at surface, covers 3 % of this area

Lithology: alluvium

Oligocene volcanic rocks (Late Eocene to Oligocene) at surface, covers 4 % of this area

Lithology: dacite; rhyolite; andesite; basalt

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

Lithology: sandstone; limestone

Jurassic (1) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Middle to Late Jurassic) at surface, covers 3 % of this area

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

Quaternary Lake Bonneville deposits (Quaternary) at surface, covers 29 % of this area

Lithology: clay or mud; sand; gravel; silt

Upper Cambrian carbonate rocks in Salt Lake City-Coalville-Randolph region (Middle Cambrian to Early Ordovician) at surface, covers < 0.1 % of this area

Lithology: dolostone (dolomite); sandstone

Quaternary mud and salt flats (Holocene) at surface, covers 2 % of this area

Lithology: mud flat; playa

Jurassic (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Late Jurassic) at surface, covers 0.5 % of this area

Lithology: mudstone

Mississippian (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Mississippian) at surface, covers 0.5 % of this area

Lithology: carbonate; sandstone; chert; phosphorite

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

Lithology: ash-flow tuff; basalt

Devonian sedimentary rocks in Salt Lake City-Coalville-Randolph region (Devonian) at surface, covers < 0.1 % of this area

Lithology: dolostone (dolomite); sandstone

Mississippian (1) carbonate rocks in central Utah (Late Devonian to Mississippian) at surface, covers 0.6 % of this area

Lithology: limestone; dolostone (dolomite)

Older Precambrian metamorphic rocks in central Utah (Precambrian) at surface, covers < 0.1 % of this area

Lithology: metamorphic rock

Permian (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Permian) at surface, covers 0.4 % of this area

Lithology: limestone; siltstone; sandstone; shale; phosphorite

Cretaceous (3) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Late Cretaceous) at surface, covers 0.8 % of this area

Lithology: conglomerate; sandstone; siltstone; mudstone

Pennsylvanian and Permian sedimentary rocks in central Utah (Pennsylvanian to Permian) at surface, covers 6 % of this area

Lithology: sandstone; limestone; medium-grained mixed clastic

Quaternary marshes (Holocene) at surface, covers 2 % of this area

Lithology: biogenic sediment

Tertiary (1) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Late Paleocene to Early Eocene) at surface, covers 2 % of this area

Lithology: mudstone; conglomerate; limestone

Tertiary intrusive rocks in central Utah (Late Eocene to Oligocene) at surface, covers 0.3 % of this area

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

Middle Cambrian shale and carbonate rocks in central Utah (Middle Cambrian) at surface, covers 0.2 % of this area

Lithology: dolostone (dolomite); limestone; shale

Pennsylvanian sedimentary rocks in Salt Lake City-Coalville-Randolph region (Pennsylvanian) at surface, covers 0.3 % of this area

Lithology: limestone; medium-grained mixed clastic; chert

Cretaceous (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Late Cretaceous) at surface, covers 0.8 % of this area

Lithology: sandstone; shale; conglomerate

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

Triassic (2) sedimentary rocks in central Utah (Middle to Late Triassic) at surface, covers 0.3 % of this area

Lithology: mudstone; siltstone; sandstone; conglomerate; evaporite

Triassic (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Middle to Late Triassic) at surface, covers 1 % of this area

Lithology: shale; siltstone; conglomerate

Triassic and Jurassic sedimentary rocks in Salt Lake City-Coalville-Randolph region (Early Jurassic) at surface, covers 1 % of this area

Lithology: sandstone

Quaternary alluvium and colluvium (Quaternary) at surface, covers 21 % of this area

Lithology: alluvium; colluvium

Tertiary intrusive rocks in Salt Lake City-Coalville-Randolph region (Late Eocene to Oligocene) at surface, covers 3 % of this area

Lithology: granodiorite; quartz monzonite; granite; diorite

Tertiary (4) sedimentary rocks in central Utah (Middle Miocene to Late Pliocene) at surface, covers 0.2 % of this area

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

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

Lithology: limestone; sandstone; mudstone; phosphorite

Triassic (1) sedimentary rocks in Salt Lake City-Coalville-Randolph region (Early Triassic) at surface, covers 2 % of this area

Lithology: mudstone; limestone; siltstone; sandstone; evaporite

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

Lithology: limestone; fine-grained mixed clastic

Older Precambrian metamorphic rocks in Salt Lake City-Coalville-Randolph region (Archean) at surface, covers < 0.1 % of this area

Lithology: metamorphic rock; plutonic rock (phaneritic)

Mississippian (3) sedimentary rocks in central Utah (Mississippian) at surface, covers 0.1 % of this area

Lithology: shale; limestone

Younger Precambrian metamorphic rocks in central Utah (Proterozoic Z) at surface, covers 3 % of this area

Lithology: sandstone; conglomerate; limestone

Middle Cambrian shale and carbonate rocks in Salt Lake City-Coalville-Randolph region (Middle Cambrian) at surface, covers < 0.1 % of this area

Lithology: carbonate; shale; sandstone

Permian (2) sedimentary rocks in central Utah (Permian) at surface, covers 0.8 % of this area

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