TERTIARY FORMATIONS, 189

Detailed Sections.

Along Northeast Cape Fear River Eocene strata of the Castle
Hayne formation are exposed at several places, but they are always
thin and rest unconformably upon the Cretaceous, which is exposed in
many of the sections. At Chinquapin Landing, 79 miles above Wil-
mington, the limestone rock which contains many Bryozoa, is exposed
at low water. Lithologically, it is similar to the Eocene strata exposed
at Wilmington. Just below Chinquapin Landing a calcareous, slightly
glauconitic, fossiliferous sandstone rises about 2 feet above the water
and is similar in appearance to the rock at Chinquapin Landing.

SECTION DEEP BOTTOM BRIDGE, LEFT BANK NORTHEAST CAPE FEAR RIVER,
JUST BELOW 75 MILEPOST.

Pleistocene: FEer.
Hight ‘colored lodse sand eiy ve ie verse oe eco ee 10-12
Hocene (Castle Hayne) (?):
Drab laminated clay with partings of sand...................00- 2
Light drab laminated clay with layers of gray sand.............. 81%

Dark gray, somewhat glauconitic sand, rather coarse in places,
very compact toward the base. Contains .a few poorly pre-
Bemed specimens Of .Oatretes cas ists es ee ae, 9

SECTION ONE-EIGHTH MILE BELOW DEEP BOTTOM BRIDGE, LEFT BANK
NORTHEAST CAPE FEAR RIVER,

Pleistocene: ; Fret.
Yellow loam, grading downward into light drab sandy clay, mot-
Ped: WIN POR oS cies eo ists cowie ee oc ek ea pews lies 10

Eocene (Castle Hayne) (?):—
Rusty brown sandy clay, containing poorly preserved fossil casts.. 14-1

Stratified drab sand and clay mottled with pink................. ' 38%
Loose gray sand, stained with iron in places...............0e0005 10
Loose gray sand, containing thin lamine of drab clay............ 4
Loose, coarse yellow sand with some thin lamine of drab clay at

RHO 5 hee EE are ea Pee, i Aa eh ier ee smnmaw Te ores. 4
Dark-green glauconitic sand....... Isisihcaaesue 2-0 hdsasbyura baie Ve Ne iad Se <9 fe
Dark drab compact plastic clay................ Papemptre rely Nua 5

Pebble bands composed of black fossiliferous pebbles in a matrix
of dark-colored argillaceous sand. Contains occasional pieces
of brown lignite and numerous sharks’ teeth, some of which are

Water-Wworm erie ei reuse Cee eos vee er ak’ wae eae EEG ee cote 0-%4
Cretaceous (Peedee) : : :
Dark green, glauconitic, micaceous sand, containing pebbles...... 1%

In the two preceding sections the upper strata of the material referred
to the Eocene are probably correctly correlated, though it is possible
that certain of the beds should be referred to the Miocene.