102 THE JOURNAL OF GEOLOGY. 
1. Third Terraces of the rivers (surface deposits) - - - - toto 20 ft. 
2. The Lafayette mantle (Orange Sand, Appomattox) - - - - 25 to 200 ft. 
TERTIARY. 
Miocene. 
1. Pascagoula - - - - - - - Thickness undetermined, about 200 ft. 
2eaGrami Ge Grullife mean een =er— e-em “ oy at least 500 ft. 
Eocene. 
1. St. Stephens, White Limestone (Vicksburg and Jackson) 200 to 350 feet. 
2 nC lalbOnneie =e oM haa ona et Pe ee AS Oya 
ay, CllemMoxoynavs joicojaysie eS i SO 
Oy Bulbystomer 27-0 aw ea oe eee e100 
Bree ME CH tier cA a acre Uait So tor etc aa 825 to 850 “ 
QldaAtenetighee he aie yale eco tes ei) een vn ONG 
6. Bashi or Wood’s Bluff - - - - - - - 80-85 
Ga M@uscahomayor Bellisivandings - =) 2-140 
GA Nanataliarqney= slay atl =) = =) 914 =) 200 
e. Naheola or Matthew’s Landing - - - 130-150 
f. Sucarnochee or Black Bluff - - - - - - I00 
4. Clayton. (Midway) Seva lene ioe) =Sutserta i lool hail 2 SstOn2 OO peers 
CLS RENCID OUI West Ala. East Ala. 
NCR ONES es Ee SUM oy cay ao ule AKO P75). TOGO 
2" Rotten Mimestone.or selma Chalk 7-929 = 9-5) -)-)- 1000 000 
Be EN GALW ache Real aren cee le il aut m\aN ema tats oa ion <eiatenia 300 300 
Acs GalOOSae geste ma =u 0) oma yma gem) ec 1000 500 
The tracing out of the several formations has made it possible to 
determine with some accuracy, not only the periods and phases of 
oscillatory movement of the southern part of the state, but also the . 
deformations which accompanied these movements. Hardly anywhere 
else along the coastal plain region have we such explicit data concern- 
ing Cretaceous and post-Cretaceous movements. 
As will appear from the preceding table, a distinction is made 
between the Recent and the Pleistocene formations, but no sharp line of 
division is drawn. ‘The coastal portion of the Recent series is found 
to be continuous below with what is classed as Pleistocene, the two 
together constituting the Biloxi formation. The division between the 
Recent and the Pleistocene is therefore in the midst of a conformable 
series. 
The second bottom terraces of the rivers is a fluviatile Pleistocene 
formation, which at Mobile Bay grades into a deposit of estuarine 
