Selma Group; Mooreville Chalk (ALKm;1)

Mooreville Chalk - (Selma Group), Yellowish-gray to olive-gray compact fossiliferous clayey chalk and chalky marl. The unconformable contact at the base is characterized by a bed of glauconitic, chalky sand containing phosphate pellets and molds of fossils. The Arcola Limestone Member at the top consists of two to four beds of light-gray brittle, dense, fossiliferous limestone separated by beds of light-gray to pale-olive calcareous clay.

State	Alabama
Name	Selma Group; Mooreville Chalk
Geologic age	Cretaceous
Original map label	Km
Primary rock type	carbonate
Secondary rock type	mixed clastic/carbonate
Other rock types	sand; limestone; clay or mud
Lithologic constituents	Major Unconsolidated > Marlchalky marl. Sedimentary > Carbonate > Limestone > ChalkYellowish-gray to olive-gray compact fossiliferous clayey chalk and chalky marl. Minor Unconsolidated > Fine-detrital > Clay (Bed)The Arcola Limestone Member at the top consists of two to four beds of light-gray brittle, dense, fossiliferous limestone seperated by beds of light-gray to pale-olive calcareous clay. Sedimentary > Carbonate > Limestone (Bed)The Arcola Limestone Member at the top consists of two to four beds of light-gray brittle, dense, fossiliferous limestone . Unconsolidated > Coarse-detrital > Sand (Bed)The unconformable contact at the base is characterized by a bed of glauconitic, chalky sand containing phosphate pellets and molds of fossils.
Map references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Unit references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Geographic coverage	Autauga - Bullock - Dallas - Elmore - Greene - Hale - Lowndes - Macon - Marengo - Montgomery - Perry - Pickens - Russell - Sumter