476 NEW YORK STATE MUSEUM 



Weatherwax quarry is N30°E and at the southern end of the gorge 

 N between 40° and 41° E. 



There seems to be no pubHshed estimate of the throw or amount 

 of displacement of this fault. If the thickness of the Utica slate 

 along the line of the fault be as great as it appears to be south of 

 Amsterdam, six miles to the west, then it must amount to some 

 1600 feet; since it would comprise the 1440 feet of the Utica slate^ 

 and the footwall of Calciferous sandstone 150 feet or more in hight. 



SARATOGA COUNTY 



Rock City falls section 



At Rock City or Mill on the Kayadarosseras creek, six miles 

 west of Saratoga Springs is an exposure from the upper part of the 

 Calciferous sand rock well into the Trenton limestone. The section 

 is as follows: 



Feet 



I2H^ Massive Calciferous sandrock forming the 

 falls. There are rolls in the upper part of the sand- 

 stone, and the top of the Calciferous on which the 

 superjacent Hmestone was deposited is irregular. 12\=12\ 



H^ Light dove colored limestone in which are a 

 few small vertical fucoidal markings, probably 

 Phytopsis tubulosa. Birdseye limestone. 1=1 3i 



H3 Texture similar to that of H^ but most of the 

 fucoidal markings are irregular, lateral shaped to 

 horizontal. In the end nearer the creek, however, 

 there are a few vertical markings which extend to the 

 top of the 2 feet, 10 inches of dove colored, compact 

 limestone. This stratum probably belongs in the 

 Birdseye. i ^,=15 J 



H^ Thin bedded, blocky limestone which is a sort 

 of transitional Black river limestone. i=i6J 



H^ Thin bedded Trenton limestone extending to 

 the top of the cliff and containing plenty of specimens 

 ofRafinesquina alternata (Con.) Hall and 

 Clarke associated with other fossils. 8^=25 



H^ Thin bedded limestone which becomes more 

 massive in the upper part. 37J feet of Trenton lime- 

 stone exposed. ' 29=54 



^■mM annual report N. T. state geolo^st, p. C60. 



