80 CEMENT MATERIALS AND INDUSTRY. [bull. 243 
ient roach of the railroad. Near Suggsville station the .same rocl 
occurs within a short distance of the railroad along the road leading 
from the station to the town. 
Between Suggsville and Gosport the country rock is the St. Stephen; 
limestone, but no particular attention was given to it for the reasor 
that there is no railroad in this vicinity. 
At Perdue Hill the St. Stephens rock outcrops near the base of the 
hills which descend to the terrace on which the town of Claiborne 
stands. The bluff at Claiborne Landing shows near the summit the 
calcareous clays or clayey limestone which lies at the base of the St 
Stephens formation, and which is generally thought to be the equiv 
alent of the Jackson group of the Mississippi geologists. It is possible 
that this rock, where it occurs in sufficient quantity, ma} 7 be suitable 
for cement making, since its composition is not very different f ron 
much of the Rotten limestone or Selma chalk. No investigations hav< 
yet been made concerning it, for the reason that there are compara 
tively few points where it appears in adequate thickness and in favor 
able localities as regards transportation. 
At Marshalls Landing, just above the mouth of Randons Creek, i 
the first exposure of the chimney rock along Alabama River. Thlj 
occurs at the top of the bluff. It has the usual covering of residua 
clay. Below the orbitoidal or chimney rock at Marshalls there are 2' 
feet or more of a porous limestone. In the same bluff there are bed 
of calcareous clay, which might possibly be used in mixing with th 
limestone. At the landing these would be difficult to quarry becaus 
of overlying strata, but they would certainly be found without cove 
along the bluffs above Marshalls if they should prove of value. 
From Marshalls down to Gainestown Landing the river bluffs shon 
beds of the limestone at numerous points. At Gainestown, the top 
most bed of the St. Stephens, the hard crystalline limestone occurs nc 
far above the water level in the river. This stone has been cut an 
polished, and proves to be a first-rate marble, inasmuch as it takes 
good polish and shows agreeable variations in color. The soft chimne 
rock underlies the hard limestone here as at other points. 
At Choctaw Bluff, some miles below Gainestown, there is the la.' 
exposure of the Tertiary limestones on this river. The material is a 
argillaceous limestone with numerous fossils, but it seems hardly likel 
to be of use in cement making. 
A few miles east of Marshalls Landing, at Manistee Mills, th 
terminus of a sawmill road, there is a quarry of the chimney roc 
which is conveniently situated as to transportation, since it is on tb 
rai 1 road. Across the count} 7 to the Repton Branch of the Louisville an 
Nashville Railroad the St. Stephens limestone may, of course, befoun 
at thousands of places, but no mention is made of these occurrence 
where they do not lie on a railroad line. 
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