132 THE COASTAL PLAIN OF NORTH CAROLINA,

About % mile farther downstream the same upland bluff is cut by
the river and a section essentially the same as the preceding is revealed.
The same species of plants were found at about the same level. It is
probable that the Patuxent formation occurs a short distance below
the water level here, and might be exposed at a low-water stage.

In the two preceding sections the following fossil plants were col-
lected :

Acerates amboyense Berry. Eucalyptus nervosa Newb.
Andromeda novae-caesareae Hollick. Kalmia brittoniana Hollick?

Chondrophyllum Nordenskioldi Heer. Liriodendron cf. primaevum Newb.
Dewalquea groenlandica Heer. . Planera cretacea Berry.

At a spring a few hundred yards back from the river and at a higher
level than the materials revealed in the preceding sections a poor ex-
posure of Eocene limestone occurs, which, although the contact was not
seen, probably overlies and rests directly upon the Black Creek forma-
tion.
In a section at milepost 105, right bank, 10 feet of Black Creek ma-
terials appear resting unconformably upon the Patuxent formation and
overlain by questionable Tertiary beds. A detailed account of this sec-
tion is given on page 97. The materials here are irregularly bedded,
consisting in part of dark drab, thinly laminated clay with some lignite,
and in part of large lenses of yellowish stratified sand.

At about milepost 104, a few feet of laminated Black Creek mate-
rials were observed at the base of a low bluff on the right bank.

At 971% miles above New Bern the following section was made:

SECTION AT 97} MILES ABOVE NEW BERN.
Pleistocene: Fret.

Yellow sandy loam, grading down into coarse yellow sand with a

thin band of gravel at base containing quartz and crystalline
sae al ik 8 os wk be ve ee 14

: (Unconformity.)
Cretaceous (Black Creek formation?) :
Gray, sandy, carbonaceous clay, in places near the base interstrati-
fied with rather coarse sand, and containing some good-sized logs
of lignite, partly in the condition of brown lignite, and an abund-
ance of iron pyrites in the form of irregular concretions........ 9

A section essentially the same as the preceding occurs at 951 miles
above New Bern.

The unconformable relations of the Patuxent and Black Creek for-
mations are well exhibited in an exposure at the county-road bridge
2 miles southwest of Goldsboro and 9434 miles above New Bern. The