REPORT OP THE STATE PALEONTOLOGIST 1902 1223 



emi, Leperditia alt a, and Tentaculites g y r a - 

 canthus, which lie below the Stromatopora bed, and they 

 correspond to layers 14 and 15 of the Spring quarry section. 

 A short distance farther up the Stromatopora bed of the Man- 

 lius is succeeded by the heavy gray and dove-colored limestones, 

 and at the brow of the hill the basal bed of the Coeymans ap- 

 pears with a flat dip to the northwest. The Coeymans occupies 

 a narrow belt, but forms a well marked ridge that continues 

 northward through the woods. 



On the line of section 4 the New Scotland beds occupy a broad 

 belt with two prominent longitudinal ridges caused by the more 

 resistant lower and upper layers. The attitude of the beds on 

 the surface indicates that they are flexed, as shown in the 

 section, into a small trough and a broad low anticlinal arch 

 with steeply dipping western limb. 



Near the western edge of the hill the Becraft limestone 

 vein 2, dipping steeply to the west with a north-northeast 

 strike, forms a low ridge, on the western slope of which the 

 Port Ewen beds are exposed standing quite on edge. The lower 

 portion of the hill slope is covered with talus, so that no out- 

 crops are found till the western side of the narrow valley is 

 reached, where the Esopus grits are extensively exposed in 

 horizontal attitude. 



Section 5, through the White lime quarry, presents quite 

 similar conditions. On the east the Becraft vein 1 is finely ex- 

 posed in the deep open quarry [W-W on map, pi. 2]. The 

 strike of the Becraft on this vein is quite sinuous. The main 

 strike is n. 25° e., but for short distances, where the vein is 

 diverted by diagonal strike faults, its trend is n. 15° e., and at 

 one point, n. 5° e. Its dip is steep to the west, with local modifi- 

 cations. At the south end of the quarry the hanging wall 

 shows a sharp fold, above which the dip is inverted toward 

 the west, and at the surface of the ground there are other traces 

 of westward drag. 



The floor of the quarry can be reached through an entrance 

 tunnel in the foot wall from the road that passes along the 

 eastern base of the hill. A second prospect tunnel at the level 

 of the quarry floor and about on a line of section 5, was driven 

 about 150 feet into the hanging wall of the quarry. This tun- 



