UPPER CRETACEOUS. 111

SECTION 1 MILE SOUTH OF HOPE MILLS ON RIGHT BANK OF BIG
ROCKFISH CREEK.

Pleistocene: Feet.
Yellow sand, stratified, and containing a few clay layers at base.. 9
Cretaceous:

Black Creek formation:

Tough, chocolate-tinted, carbonaceous clay with some lignite and
Vegerable articles. cictine ter diay ech os sw he ee ace ae 0-3
(Unconformity.)
Patuxent formation:

Gray, erkoslessand ANeClay: ote. a ns cas canckic ied | nee 24-27
SECTION BELOW WAGON BRIDGE OVER ROCKFISH CREEK, NEAR
BRUNT POST-OFFICE.

Pleistocene: : Feet.
Band -and™ gravels so eek ae Neale he tee ee Pept bee's 5

(Unconformity.)
Cretaceous (Patuxent formation) :

Compact, light gray and greenish gray, micaceous, arkosic sand
and clay, in places slightly indurated and in places cross-bedded. 40

One doubtful Patuxent exposure has been observed on Lumber River

in Robeson County, just below Redbank bridge. It is described as
follows:

SECTION JUST BELOW REDBANK BRIDGE, LE#T BANK.

Cretaceous? (Patuxent formation?) : ; Frer.
Yellowish-brown, loamy, arkosic sand.......... Sila Ngee tig whee heart ole 4
Coarse, gray, compact, arkosic sand.......... bah § stipe geht ng ah a 6

Light drab, compact, sandy clay, becoming more sandy to a coarse,
Brgllngeouh: SANG Ab BABES <0 5.040 ob eee OE aka whic aw ore SEA gales 3
Very light drab, compact, slightly sandy clay................... 2

The materials in this section are not very characteristic, but it seems
probable from their compact condition and the presence of arkosic
matter that they should be correlated with the Patuxent formation.

UPPER CRETACEOUS.
| BLACK CREEK FORMATION.
- Name—The name Black Creek was proposed by Mr. Earle Sloan

in 1907.1 It is derived from Black Creek, a tributary of Great Peedee

River in Darlington and Florence counties, South Carolina.
The terrane to which he applied the name is the equivalent, as shown
by both its lithologic and paleontologic characters, of the division in

ES ses a

1Handbook of South Carolina, issued by the State Department of Agriculture, Commerce
and Immigration, 1907. Chapter 5, pp. 77-145. (This chapter is said by Watson to have
been issued as a separate in May or June, 1907, and a map was published in 1905 on which
the name Black Creek shale was used.)

*