Marianna Limestone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Oligocene
 .....middle Oligocene
 ......Marianna Limestone
RTMississippi
 Alabama
 Florida
 Vicksburg Group
SNIn Vicksburg Group. Consists of soft chalky limestone, locally called chimney rock; some local, hard limestone; tough to hard ledges in the chimney rock; sandy glauconitic limestone; marl; calcareous sand; and lignitic clay. S Alabama, W Florida, and S Mi