STRATIGRAPHY OF MOHAWK VALLEY AND SARATOGA CO. 471 
massive sandstones and still higher are thinner sandstones alternat- 
ing with bluish shales. The line of division between the Utica 
and Hudson river is clear and sharp and there is no question in refer- 
ence to the separation of these two formations as seen in this cliff. 
A fairly good idea of its geological appearance may be gained 
from the accompanying picture taken from the eastern bank of 
the creek. The Utica shale shows near the southern end of the 
cliff, a little farther south than the Bega house, while the Hudson 
river in the bank above is mostly covered. 
About a mile and a quarter down the creek from the Bega cliff 
is another conspicuous one on the western bank, opposite the Over- 
baugh farm and a short distance below the ford. This cliff is com- 
posed of the Utica slate which is finely exposed for at least 160 
feet. The dip is about 34° S, 20° E. 
On the eastern bank of the creek just north of Mill Point there 
is a splendid exposure of till or boulder clay. The lower part of 
the bank is composed of blue clay containing numerous boulders, 
some of them of large size, while the upper part is somewhat yel- 
lowish in color. The barometer gave a thickness of 130 feet for 
this deposit. Along the middle course of many of the streams en- 
tering the Mohawk river from the south is a deposit of boulder 
clay but in no other locality has such a thick and fine exposure 
been found. 
Bean hill section 
Near the northern end of Bean hill several fair exposures near 
the contact of the Utica slate and Hudson river formation have been 
noted. In the upper part of the small creek on the eastern side 
of the hill and near the highway crossing its northern end are good 
outcrops of the Utica slate in the glen above the Bussing farm- 
house. The section from the level of South Chuctanunda creek 
at the highway bridge to the sandstones near the summit of the 
highway is as follows: 
Feet 
45Y1 Covered from creek level to shale in creek Ye 
above Bussing’s house. ==) 60 
Y? Black argillaceous Utica shale to fork of creek. 70160 
Y? Similar black shale along eastern fork of creek 
for 167 feet when a slightly arenaceous stratum 
occurs. 107-827 
