GEOLOGY OF SARATOGA SPRINGS AND VICINITY 6l 



Woodlawn Park fault. The first of the two branches given off 

 from the main fault at St Clements may be named from this park, 

 as it runs through its northern portion. The only rock outcrop in 

 this portion of the fault block is the Hoyt limestone exposure at the 

 railroad quarry, closely adjacent to Precambric on the north and 

 to Little Falls dolomite on the west and south. Farther south 

 abundant exposures of Little Falls dolomite and overlying Amster- 

 dam limestone occur within the fault block, while across the fault 

 to the southeast is drift-covered territory with Canajoharie shale 

 for the surface rock. Then the fault runs into shales and is lost, 

 as happens to all the faults of the region in like circumstance. The 

 throw of this fault north of Saratoga is just about the thickness 

 of the Little Falls dolomite in amount, hence 300 feet at least. 



Saratoga fault. The second branch given off from the main fault 

 at St Clements follows the strike of the main fault into Saratoga 

 and the upthrow side is constituted 

 of the platform of Little Falls 

 dolomite on which the western half 

 of the village is built. At the north 

 edge of the village the strike of 

 the fault swerves somewhat to the 

 west and so continues to West Con- 

 gress street and Broadway, where 

 it swerves sharply to the west. This Fig. 6 Diagram of the Saratoga 



part of its course is covered by drift ^^"^^ ^^^ .^^e tipped wedge of Am- 

 - . ,, , -J- j_- 1 1 sterdam limestone in the northern 



but the chang-e m direction has been , r o ^ c • 



° part of Saratoga Sprmgs; a= up- 



disclosed by excavations made for ^hj-ow side of Little Falls dolomite; 

 sewers, the data having been fur- b = downthrow side of Canajo- 

 nished by Mr S. J. Mott, the village harie shale; c= Amsterdam 



engineer. By these means the fault ^^^^s^' ^^"^'^^^ ^^^^^ ^"^ ^"^^ ^^ 

 , , ,.-.,. . r wedge surface exaggerated 



has been traced m this direction for 



something like one-third of a mile, after which its course is largely 



conjectural. 



The fault has long been known because of its close association with 



the older springs at Saratoga, but when compared with the other 



breaks of the region its notoriety is found to be out of all proportion 



to its magnitude. It is but a small break. In its course through the 



village there is everywhere associated with it a narrow wedge of 



Amsterdam limestone caught in along the fault zone. This is best 



seen back of the Star spring and thence northward for a few rods. 



The low fault scarp, 20 to 25 feet in height, shows the upper beds 



