ERATHEM 



CENOZOIC 





MESOZOIC 



SYSTEM 



QUATERNARY 



TERTIARY 



SERIES 



HOLOCENE 

 PLEISTOCENE 



PLIOCENE 

 MIOCENE 



OLIGOCENE 



EOCENE 



PALEOCENE 



GEOLOGIC 

 UNIT 



UNDIFFERENTIATED 



UNDIFFERENTIATED 



"AM05 SANO 



UNDIFFERENTIATED 



JACKSON GROUP 



CLAIBORNE GROUP 



WILCOX GROUP 



MIDWAY GROUP 



LITHOLOGY 



CRETACEOUS 



UPPER 



LOWER 





JURASSIC 



PRE- 

 MESOZOIC 



TRIASSIC 



? ^-"^ ?■ 



UPPER 



MIDDLE 



SECMA GROUP 



EUTAW FORMATION 



TUSCALOOSA 

 GROUP 



LOWER 

 CRETACEOUS 



UNDIFFERENTIATED 



zzzzzzz 



COTTON 

 VALLEY 



GROUP 



HAYNESVILLE 

 FORMATION 



BUCKNER 

 ANHYDRITE 



SMACKOVER 

 FORMATION 



NORPHLET 

 FORMATION 



LOUANN SALT 



WERNER 

 FORMATION 



EAGLE MILLS 



FORMATION 



BASEMENT 

 COMPLEX 





W///////M 



S*nd. gnvcl in] u 



n lindiione E*dl 



,Ione t.ft» 10 eoarie ^raintd. conjiomfaiic i 

 ••iin IrKM ol mtlimoipniC "X* figment 

 , gl wndy ifiilt ind iT»jl» thin limetiooi 



Ann, dm* wiin nod »nd m*i»moiph>e rock lr»g 





o'phic arid igiifloui rockt 



EXPLANATION 



□ 



B 



m 



Jjf G«»Cond«ni 



Figure 9. Generalized stratigraphic column in oil- and gas-producing areas in 

 southwest Alabama (Masingill 1982a). 



108 



