TERTIARY FORMATIONS, 207

SECTION JUST EAST OF CHINQUAPIN BRIDGE ON CHINQUAPIN CREEK,

3 HERTFORD COUNTY.
Pleistocene:

Freer,
Buff-brown Sandy clay loam
Miocene (St. Marys):

Fine buff to gray stratified sand; no fossils ODRORVO0 3. i. jae at 10

Sections Along the Roanoke River

tributary to Quankey Creek, just to
the following section is exposed :

and Tributaries—In a ravine,
the south of the town of Halifax,

y SECTION AT HALIFAX, N.C,
Pleistocene:

Fret.
Loose white sand, containing a few pebbles at the DAKE Cres anes 514%
Miocene (St. Marys) :

Light drab arenaceous and micaceous clay stained yellow in
places, grading downward into next member

Rises cme gtaws aN 3%
Light yellow to white interlaminated micaceous sand and drab

bine Abs age, ROR eT CR Pee ae es Sree eR Ta ai pre's 4
TIrregularly stratified dark blue plastic arenaceous and micaceous

CHAS 1, SERBS AY DIR OR S8 ad sys cowed cai 4 eget ape a 7-8
Partly concealed drab to gray plastic clay, containing consider-

able coarse arkosic sand in DIAGOR 5 ca See ay eee he eae 10

Dark bluish-green plastic clay, containing flakes of mica and
some rather coarse sand and small pebbles; very compact.

~ Forms a vertical wall over which the water falls.............. 4

Dark green argillaceous sand...............0.......... Silene i, LOsES

Shell marl, the shells inclosed in a matrix of dark bluish-green
sand. /The molluscan fossils are varied and abundant and con-
stitute the larger portion of the marl, though there are many
vertebrate bones present. This rests unconformably upon the
irregular surface of rotten granitic rock. Some pebbles and

even large bowlders are found in the marl, to one of which a ee
number of barnacles were attached
Pre-Cambrian crystallines:

Decayed granitic rock.... Z

FOSSILS FROM HALIFAX, N. C.

CrusTAcEa: Fissuridea marylandica Conrad.
Balanus concavus Bronn. Fissuridea redimicula Say.
GASTROPODA: Polynices heros Say.

Calliostoma philanthropus Conrad. Scala marylandica Dall.
Calliostoma philanthropus var. basi- Teinostama nanum H. CG. Lea.

 

   

cum Dall. : Tornatina canaliculata Say. i
Crepidula aculeata Gmelin var. Turritella variabilis Conrad. |

costata Morton. : ScapHoropa : ; t 4
Crepidula fornicata Say. Cadulus thallus Conrad. ‘ 4
Crucibulum grande Say. Dentalium attenuatum Say. :
Crucibulum costatum var, pileolum PELECYPODA:

H. C. Lea. Anomia simpler @’Orbigny.

| Eephora quadricostata Say. Arca (Barbatia) centenaria Say.