52 



Report of the State Geologist. 



line, but its relations and the known presence of the fault south- 

 ward strongly suggest a long dislocation. To the southward it 

 gradually dies out a short distance southwest of Saratoga. The 

 easternmost, or Spring fault, appears to extend southward to 

 Ballston, if the continuation of the line of springs is an evidence 

 of its existence, which is probable. It is entirely in Utica slate 

 south of the Kissingen spring of Saratoga, for at that point the 

 Trenton limestone on the west side of the fault dips beneath the 

 Utica slate. The westernmost fault in the Saratoga region is 

 prominent for about three miles, as shown in the sections in 

 figure 10. It extends into the crystalline rocks northward and 

 into the Utica slate area southward, but these extensions were 

 not followed. 



Lake George Pault. — The middle fault of the Saratoga region, 

 as stated above, appears to extend to Lake George and along its 

 eastern shore. For many miles its prominent scarp of crystalline 

 rocks rises abruptly from, the great sand plain eastward. For 

 some distance south of Lake George the dislocation is entirely in 

 crystalline rocks, but at the south end of the lake a small area of 

 Calciferous is seen, and farther up the lake at Hill View and Bol- 

 ton there are other small outliers of sedimentary rocks. The 

 lower part of the lake basin appears to be excavated in the Cal- 

 ciferous, for several outliers along its sides and others constitut- 

 ing the southern islands indicate an extensive area of this forma- 

 tion. There is a long strip of Calciferous on the east side of 

 French mountain, probably cut off on the east by a fault which 

 continues along the east shore of Lake George from Kattskill 

 bay. At a point two miles south of the East bay a small area 

 of Trenton limestone also abuts against this fault. The follow- 

 ing section is intended to show the relations in this region. 





FiGTJKE 11.— Section from the south end of Lake George, eastward through French Mountain, looking 

 north. T. Trenton limestone. C Calciferous. ^. Crystalline I'ocks. i^. French Mountain. 



Holland Patent. — There is a small fault exposed east of Hoi. 

 land Patent, which extends to a short distance west of Trenton. 

 The amount of displacement is not over sixt}^ feet at greatest, 



