182 THE COASTAL PLAIN OF NORTH CAROLINA.

Marl has been dug for fertilizing purposes about 3 miles to the south-
east of Mount Olive.

Junction of Falling Creek and Neuse Rwer.—At this place Eocene
marl has been dug within the last few years. It consists of calcareous
sand, rather firmly cemented in certain places and containing many
fossils, particularly Bryozoans, Echinoids, bones, and sharks’ teeth. The
marl occupies a depression in the crystalline rocks, which are exposed a
few rods away. This is the locality referred to by Olmsted in 1827.
Similar marl is reported from a few other localities in the immediate
vicinity.

Rock Spring, 4 Miles Above New Bern on Right Bank of Trent River.
Shell rock of Eocene age appears in bank about 3 feet above high tide.
It contains an abundance of casts and impressions of fossils. It is over-
lain by yellowish-colored Pleistocene sand containing small pebbles. At
the base there is some glauconite, presumably derived from the Cre-
taceous. :

White Rock tale, Left Bank of Trent River, About 12-13 Miles
Above New Bern—The Eocene limestone appears here and rises about
15 feet above the water. Casts of fossils are numerous. The Eocene is
overlain by about 15 feet of Pleistocene strata consisting principally of
yellowish-brown, loamy clay, containing some small pebbles. The same
stratum of Eocene rock is exposed at many other places along Trent

River in the same vicinity. ‘
SECTION NORTH END OF A. C. L. BRIDGE, POLLOKSVILLE, N.-C., NEW Stace: Be,
QUADRANGLE, :
Pleistocene: FEET.
: Several: feet of sand = — loam poorly exposed PERCE ected ‘ws 3-10

Eocene:

Rest 4 ‘Massive beds of Oitven georgiana with yellow cca matrix. No

Sp other form was seen, except possibly another species of oyster
and a few barnacles attached to oysters. The largest oyster
measured about 12% inches in. length. gee ees edge, Trent
River Sib acd sla NU Fe Ndip aid wien Sau Nig AM ore Sieben re Mee hares se 15

“the exact tbieknees: of the shell bed i is rendered somewhat uncertain
. the fact that some mixing has taken place in digging the cut, and it —
has been further obscured by growth of weeds, grass, ete. The oysters
aré long, thick, massive, and heavy. They are very rotten and crumble
so easily that it is almost impossible to secure perfect specimens. =

- The same bed of oysters is exposed in the cut about 100 yards south of
the Polloksville depot. It differs from the preceding, however; in —
that portions of the upper part are indurated. ‘The indurated’ portions —
are irregular i in form, not in layers, and in places are several feet in