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

Geologic units in Scott county, Missouri

SMITHVILLE DOLOMITE, POWELL DOLOMITE, COTTER DOLOMITE, JEFFERSON CITY DOLOMITE (Phanerozoic | Paleozoic | Ordovician-Early [Ibexian]) at surface, covers 0.1 % of this area

SMITHVILLE DOLOMITE, POWELL DOLOMITE, COTTER DOLOMITE, JEFFERSON CITY DOLOMITE - fine crystalline, silty, cherty dolomite, and oolitic chert with local sandstone beds

Lithology: dolostone (dolomite); sandstone; shale; conglomerate; chert

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

Cretaceous

Lithology: sandstone; clay or mud; gravel; siltstone

DECORAH GROUP, PLATTIN GROUP (Phanerozoic | Paleozoic | Ordovician-Middle [Mohawkian]) at surface, covers 2 % of this area

DECORAH GROUP, PLATTIN GROUP

Lithology: limestone; shale

JOACHIM DOLOMITE, DUTCHTOWN FORMATION (Phanerozoic | Paleozoic | Ordovician-Middle [Mohawkian]) at surface, covers 1 % of this area

JOACHIM DOLOMITE, DUTCHTOWN FORMATION

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

HOLOCENE SERIES (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 78 % of this area

HOLOCENE SERIES - Alluvium - clay, silt, sand, and gravel

Lithology: clay or mud; silt; sand; gravel

LEEMON FORMATION, MAQUOKETA GROUP, CAPE LIMESTONE, KIMMSWICK LIMESTONE, NOIX-CYRENE LIMESTONE, MAQUOKETA SHALE (Phanerozoic | Paleozoic | Ordovician-Middle Ordovician-Late) at surface, covers 0.9 % of this area

LEEMON FORMATION, MAQUOKETA GROUP INCLUDING: (GIRARDEAU LIMESTONE, ORCHARD CREEK SHALE, THEBES SANDSTONE, CAPE La CROIX SHALE), CAPE LIMESTONE, KIMMSWICK LIMESTONE, NOIX - CYRENE LIMESTONE, MAQUOKETA SHALE

Lithology: limestone; shale; sandstone

TERTIARY SYSTEM (Phanerozoic | Cenozoic | Tertiary | Paleocene Eocene(?) Oligocene(?) Miocene(?) Pliocene-Early(?) Pliocene-Middle(?) Pliocene-Late) at surface, covers 3 % of this area

TERTIARY SYSTEM - PLIOCENE SERIES - Mounds Gravel (Lafayette Formation) - ferruginous, chert gravel, max of 60 ft. EOCENE SERIES - Wilcox Group - includes Holly Springs Formation - x - bedded sandstone, clay and gravel, max of 1200 ft.; Ackerman Formation - clay with lens of sand and gravel, max of 100ft. PALEOCENE SERIES - Midway Group - includes Porters Creek Clay - bentonitic clay, max of 200 ft.; Clayton Formation - marl, fossiliferous, calcareous, limonitic, glauconitic sand and clay, max of 20 ft.,

Lithology: sandstone; clay or mud; gravel; sand

ST. PETER SANDSTONE, EVERTON FORMATION (Phanerozoic | Paleozoic | Ordovician-Early Ordovician-Middle) at surface, covers 8 % of this area

ST. PETER SANDSTONE, EVERTON FORMATION

Lithology: dolostone (dolomite); sandstone; limestone

GULFIAN SERIES (Phanerozoic | Mesozoic | Cretaceous-Late [Gulfian]) at surface, covers 7 % of this area

GULFIAN SERIES - Owl Creek Formation - massive, sandy, micaceous, fossilliferous, glauconitic marine clay, max 100 ft. McNairy Formation - unconsolidated sandstone with clay and gravel lenses, max of 250 ft.

Lithology: sandstone; clay or mud; gravel

SILURIAN SYSTEM (Phanerozoic | Paleozoic | Silurian-Early Silurian-Middle(?) Silurian-Late) at surface, covers < 0.1 % of this area

SILURIAN SYSTEM - JOLIET LIMESTONE, BOWLING GREEN DOLOMITE, BRYANT KNOB FORMATION, BAINBRIDGE FORMATION, SEXTON CREEK LIMESTONE

Lithology: limestone; dolostone (dolomite); shale

DEVONIAN SYSTEM (Phanerozoic | Paleozoic | Devonian-Early Devonian-Middle(?) Devonian-Late) at surface, covers < 0.1 % of this area

DEVONIAN SYSTEM - CHATTANOOGA SHALE, SYLAMORE SANDSTONE, FORTUNE FORMATION, HOLTS SUMMIT SANDSTONE, SNYDER CREEK SHALE, CEDAR VALLEY LIMESTONE, LOUISIANA LIMESTONE, SAVERTON SHALE, GRASSY CREEK SHALE, TURPIN SANDSTONE, BUSHBERG SANDSTONE, GLEN PARK LIMESTONE, St. LARENT LIMESTONE, BEAUVAIS SANDSTONE, GRAND TOWER LIMESTONE, CLEAR CREEK CHERT, LITTLE SALINE LIMESTONE, GRASSY KNOB CHERT, BAILEY FORMATION

Lithology: limestone; sandstone; shale; chert

Galena-Platteville Groups (Ordovician) at surface, covers < 0.1 % of this area

Galena-Platteville Groups

Lithology: limestone; dolostone (dolomite); shale

Tertiary - Paleocene, Eocene (Tertiary) at surface, covers < 0.1 % of this area

Tertiary - Paleocene, Eocene

Lithology: sandstone; clay or mud; gravel; silt