Magdalena Formation (TXPPAm;0)

State	Texas
Name	Magdalena Formation
Geologic age	Phanerozoic \| Paleozoic \| Carboniferous Pennsylvanian Permian (?)
Original map label	PIPm
Comments	Limestone, shale, and marl. Mostly ls. fine grained, in part cherty, v. thick bedded. some interbedded shale. 2,700 ft in Franklin Mts.,
Primary rock type	limestone
Secondary rock type	shale
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Incidental Sedimentary > Carbonate > Marlstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed)
Map references	Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000
Unit references	Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000
Geographic coverage	Comanche - Eastland - El Paso