200 
GEOLOGY OF NORTH CAROLINA. 
gray marl, very shell} 7 , of good quality ; it has more than doubled the 
yield of the land to which it was applied. No. 42 is from Mr. T. J. 
Jamin’s, lower down, and is of light color and without shells, probably 
Eocene. There is also a bed of tine gray shelly marl 5 miles north of 
Jackson, at Jonas Jones’ place, which contains large clam shells ; n abun- 
dance. No. 43 is from Glenbernie, 3 miles above Newbern, on the Neuse. 
It is a brown marl, full of broken shells. The white (Eocene) marl also crops 
out expensively beneath it in the slope facing the river. Shell marl is found 
abundantly below Newbern, in both banks of the river for many miles. 
It is constantly eroded by the play of the tides, and the fossil shells and 
corals of both the Miocene beds and the overlying Postpliocene are 
strewn in great numbers along the beach with the remains of living 
species. In Carteret county, at Newport, marl is obtained in a ravine 
crossing the railroad. A specimen forwarded by I)r. Arendell, gave 
30.55 per cent, of carbonate of lime. It is a sandy, ash-colored earth, 
full of small shells in good preservation. No. 44 is from Lenoir. The 
sample was obtained from the farm of J. L. Mewbern, 7 miles north of 
Kinston, in an extensive level tract known as Lousin Swamp. This 
bed is notable for the fine mastodon jaw, and other striking fos- 
sils whilch it has furnished. A similar body of marl is found between this 
point and Kinston, in Briar Swamp. But the Eocene and Cretaceous 
marls are more common in this county than the Miocene. 
Blue Marls of Wayne, Wilson and Nash. 
45 
46 
47 
48 
Silica, Insoluble, 
Silica, Soluble, 
75.66 
73.44 
24.70 
35.73 
1.21 
Oxide of Iron and Alumina,. 
6.24 
5.25 
6.01 
7.95 
Lime, 
8.17 
8.50 
34.97 
25.01 
Magnesia, 
0.85 
0 55 
2.26 
0.82 
Potash, 
0.51 
0.02 
0.80 
Soda, 
0.02 
0.24 
0.48 
Phosphoric Acid, 
0.32 
large 
0.32 
0.07 
Sulphuric Acid 
1.47 
2.08 
1.08 
0.60 
Carbonic Acid, 
6 24 
6.14- 
29.06 
20.15 
Organic Matter and Water.. . 
0.52 
0.44 
7.18 
• Marl is abundant in the neighborhood of 
Goldsboro 
', and northward 
on the waters of Little River. 
In a field of Dr. Kirby 
, near the 
limits 
of the town, a bed has been 
opened, which 
is a gray 
sandy marl 
1, with 
