STRATIGRAPHY OF MOHAWK VALLEY AND SARATOGA CO. 47I 



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 clifif. 

 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 

 clifif, 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 clifif 

 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 3J° 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 



45 Y^ Covered from, creek level to shale in creek 

 above Bussing's house. 90= 90 



Y^ Black argillaceous Utica shale to fork of creek. 70=160 



Y^ Similar black shale along eastern fork of creek 

 for 167 feet when a slightly arenaceous stratum 

 occurs. 167=327 



