474 NEW YORK STATE MUSEUM 
Amsterdam section 
On the northern bank of the Mohawk, not far above the river 
bridge at Amsterdam the Birdseye and Black river subformations 
of the Trenton are shown. 
Feet 
45Z1 Arenaceous -limestone to the river level. 
Calciferous formation. : [15 
Z2 Drab compact limestone of the Birdseye. Not 
typical in appearance. S=13 
Z3-Very dark gray, somewhat lumpy limestone. 
Black river. O21 
Z* At top of the ledge about 1 foot of lighter 
gray limestone containing Trenton fossils. Trenton 
limestone. 1=—22 
Pattersonville section 
Since the description of the Pattersonville section appeared,! the 
Moore quarry has been worked extensively for the Erie canal, so 
that the character of the Trenton limestone is shown to better advan- 
tage than formerly. The following section from river level to the 
top of the Moore quarry is given for comparison with the former 
section. 
Feet 
2D! Covered from river level to ledges in the 
woods SSW of Pattersonville. I140—=1 40 
D? Partly covered. Some ledges of rough cal- 
_ careous sandstone in which is some flint. Calciferous 
sandrock. 70==210 
D* Drab, somewhat lumpy limestone in which are 
large masses of Columnaria alveolata 
Goldf. This is best shown in the little run below the 
Moore quarry where, in the small fall, are 7 feet, 6 
inches. 74—=2174 
D* Massive rather light gray limestone forming 
the lower part of the Moore quarry. Trenton lime- 
stone. 1049—2284 
D°® Shaly quite fossiliferous dark blue Trenton 
limestone. 6=2344 
13th annual report N. Y. state geologist, p. 656-57, section 2B. 
