00 NOKTH-CAKOLINA GEOLOGICAL STTKYEY. 



56. The sand beds beneath the shell marl extend nearly 

 to Fayetteville. They may be examined at the bridge over 

 Rockfish creek, seven miles from Fayetteville, and at Mrs. 

 Purdy r s marl bed, ten miles above Elizabethtown, and, also, 

 at Elizabethtown, in the high banks below the village. 



The sand of this formation, when it is unconsolidated, is 

 loose and caves from its banks continually. In addition to 

 lignite and a few shells it contains an abundance of iron 

 pyrites. Its whole thickness on the Cape Fear is about 

 seventy feet. 



It is possible the beds may be recognized on the Neuse and 

 Tar rivers, especially at the Sarpony hills, fourteen miles be- 

 low Goldsboro'. 



57. The bluff below Elizabethtown presents the following 

 strata, as exhibited in fig. 4 : 



FIG. 4. 1. Sand with peb- 



x^T^rrgr^Trs^^oroo.-f' bles. 2. Brown earths. 



/ 2. 3. Sand. 4. Shell marl 



/ 3_ three feet thick. 5. 



^^ $$ & & @> |^ 4. Sand containing lig. 

 .-. y.v.-.-.v. -.-. ... ........-....:...-. -..-... ..-.-. y n jte and consolidated 



k layers, with numerous 



. fossils. 



7_ The b e ds of san d with 



lignite or charred wood 

 are similar to those of Brown's landing and Walker's bluff. 

 But there are no particles of green sand or fossils from this 

 formation in the shell marl bed. It appears that the shell marl 

 beds in which are intermingled the organic remains from the 

 secondary, are confined to a narrow belt which may be traced 

 along the eastern border of the formation. 



Section No. 5 is designed to show the relations of the shell 



O 



marl to the white Eocene beds of the Neuse, which do not ex- 

 tend south-westward to the Cape Fear. 



