I08 NEW YORK STATE MUSEUM 



SECTION EAST OF HIGHLAND PARK 



Feet 



14 Gray, subcrystalline dolomite, with a small amount of 

 calcite cement; great masses of gray to black chert at 

 summit, and in smaller amount at lower horizons; fre- 

 quent irregular spots and films of coarsely crystalline 

 calcite, to top of exposure 7 



13 Medium coarsely crystalline, light gray dolomite, con- 

 taining locally much gray and black chert; somewhat 

 brecciated along ancient dislocation surfaces, the inter- 

 spaces now rilled by blackish, subcrystalline calcite. . . 9 



12 Laminated layer of light and dark gray, subcrystalline 



dolomite, with small nodules of crystalline calcite.... I 



11 Gray white, subcrystalline, hard dolomite, with frequent 

 drusy cavities lined with dolomite, calcite and quartz 

 crystals, quite like those in the Little Falls region, the 

 dolomite crystals having formed first and the quartz 

 last 5 



The above section is shown in the Maple ave. quarry near the 

 fault line, at the north edge of Saratoga Springs ; from the quarry 

 the basal layer can be directly traced around to the north along the 

 hillside to where it comes out on Broadway and forms the upper 

 bed of the section shown down the hill toward St Clements. 



Feet 



10 Medium coarsely crystalline, gray to gray white dolo- 

 mite, somewhat mottled in appearance, with some cal- 

 cite cement between the dolomite rhombs; very full of 

 chert 12 



9 Very massive, gray, granular to subcrystalline dolomite, 



full of large and small nodules of crystalline calcite. . . 10 



8 Unexposed 12 



7 Massive layer of gray, granular dolomite with calcite 



spots, quite like that above gap 5 



6 Dark gray, hard, finely crystalline dolomite, bad smelling 

 when freshly broken ; occasional small cherts, and spots 

 of crystalline calcite; very massive and irregularly 

 bedded 10 



5 Somewhat lighter colored than that above, less odor and 



with no chert, otherwise similar 10 



