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

Geologic units in Sabine Parish, Louisiana

Cockfield Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 7 % of this area

brown lignitic clays, silts and sands; some sideritic glauconite may weather to brown ironstone in lower part.

Lithology: clay or mud; silt; sand

Intermediate Terraces (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers < 0.1 % of this area

light gray to orange-brown clay, sandy clay, and silt; much sand and gravel locally.

Lithology: clay or mud; silt; sand; gravel

Deweyville Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene (?)) at surface, covers < 0.1 % of this area

Deweyville Formation

Lithology: sand; silt; clay or mud

Wilcox Group (undifferentiated) (Phanerozoic | Cenozoic | Tertiary | Paleocene) at surface, covers 39 % of this area

gray to brown lignitic sands and silty to sandy lignitic clays, many seams of lignite; some limestone and glauconite.

Lithology: sand; clay or mud; coal; limestone

Alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 17 % of this area

gray to brownish gray clay and silty clay, reddish brown in the Red River Valley, some sand and gravel locally.

Lithology: clay or mud; sand; gravel

Cook Mountain Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 2 % of this area

greenish gray sideritic clay in upper part may weather to brown ironstone; yellow to brown clays and fossiliferous marl in lower part may weather to black soil. Ironstone concretions near base.

Lithology: clay or mud; unconsolidated deposit

High Terraces (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 0.3 % of this area

tan to orange clay, silt, and sand with a large amount of basal gravels.

Lithology: clay or mud; silt; sand; gravel

Lena Member (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 1 % of this area

gray calcareous clays which may weather to black soil; siltstone, taffaceous clays and some volcanic ash beds

Lithology: clay or mud; siltstone; volcanic ash

Vicksburg Group (undifferentiated) (Phanerozoic | Cenozoic | Tertiary | Oligocene) at surface, covers 0.7 % of this area

brown to gray liginitic clays with thin interbeds of lignite or micaceous sands; calcareous shale, petrified wood, and bluish fossilferous clay locally.

Lithology: clay or mud; coal; sand; shale

Cane River Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 0.1 % of this area

brown silty clay with basal glauconitic, fossiliferous silts which may weather to ironstone locally.

Lithology: clay or mud; silt

Catahoula Formation (Phanerozoic | Cenozoic | Tertiary | Oligocene) at surface, covers 4 % of this area

gray to white sandstones; loose quartz sand, tuffaceous sandstone, volcanic ash, and brown sandy clays; petrified wood locally.

Lithology: sandstone; sand; volcanic ash

Jackson Group (undifferentiated) (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 4 % of this area

light gray to brown liginitic clays with thin interbeds of limonitic sands or lignite; near base,calcareous, glauconitic, and fossiliferous beds may weather to black soil.

Lithology: clay or mud; sand; coal

Prairie Terraces (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 7 % of this area

light gray to light brown clay, sandy clay, silt, sand, and some gravels.

Lithology: clay or mud; silt; sand; gravel

Sparta Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 3 % of this area

white to light gray massive sands with interbedded clays; some thin beds of lignite or lignitic sands and shales.

Lithology: sandstone; clay or mud; coal

Carnahan Bayou Member (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 2 % of this area

yellow to gray siltstones, sandstones, and clays with thin tuffaceous beds; some lenses of black chert gravel; petrified wood locally.

Lithology: siltstone; sandstone; clay or mud; tuff; gravel

Carizzo Sand (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers < 0.1 % of this area

Carizzo Sand

Lithology: sandstone