And the “ Great Carolina Marl Bed.” 13 
GEOLOGICAL HISTORY AND ORDER OF SUCCESSION OF 
THE FOSSILIFEROUS BEDS OF THE CHARLESTON BASIN. 
—_— 
if PresENT AGE. 
! . . 
CurtivaTep Sort anp Sugsorts. | (Man and the animals which | uf 
| are living, his contemporaries. ) aes 
Se 
ba tiea) 
a 
( Recenr or Post PLelocene ¢ GAs 
SANDs AND SHELLS.—PHOSPHATE Acr. 23 
2 5 e5 
Rocxs AND CLays. } (Period of the advent of man | Je 
_upon this Continent.) | 
[ PLEIOCENE AGE. ] 
SANpDs AND Beps or Loosr Ma- (So-called because most of 
TERIAL, containing fossil shells, } its fossil shells belong to species 
etc. | now living.) | 
{ Merocene or Mippre Terti- j 
| 
' ARY AGE. | 
Sanps AND Crays, containing (Extensively exposed in Vir- 
fossil shells, teeth and bones.; ginia and other States north 
(None in South Carolina of this 
meiocene age.) ; smaller number of fossils be- 
of South Carolina, having a 
[ longing to recent species. ) 
Tertiary or Third Period. 
Sanps AND Marts.—Very rich [ 
in Carbonate of Lime, and exten- | Eocene AcE or OLpesT | 
sively developed in this State. It Tertiary. 
was called by Mr. Ruffin the (Dawn of the creation of 
“GREAT CAROLINIAN Mart Bep.” 
recent animals. No species 1 
found fossil in the Carolina Beds 
is known as the ‘ Fish Bep ” of | are now living.) 
the Charleston Basin. | | 
The upper layers or Ashley Marl 
{ Creracrous or Cuark AGE. he 
Sanps, Crays anp Marts, (Its fossil shells and bones a3 
poor in Carbonate of Lime, though correspond to those of the f 55 
rich in fossil shells. chalk beds of Europe. There 3 Pe 
Lis no TRUE CHALK in America.) J 
