BOS HEW rOBK E MUSEUM 



Valley railroad. Quarries have been opened in it at 



Hall 1 • ' I marl underlies the marsh bordering Flint 



h of the village of Bethel, and probably occurs under 

 the Bwamp Dear Vic in the swamps at the heads of 



i ice la) 



Orange and Rockland counties 3 



In Rockland and Orange counties there begins another series 

 of belts of the Cambro-Silurian limestone formation, which ex- 

 ad in a uortheasterly direction. These same belts continue 

 across the river into Dutchess county and also extend up into 

 Columbia county. In the hitter, however, they are so unimportant 

 DOt to be worth considering. 



The Cambro-Silurian limestones are found at several places in 

 Orange county. One area occurs around Central Valley (pi. 57) 

 and Turner, extending thence westward to Monroe. It is finely 

 crystalline, light bluish gray, and rather silicious; still it is used 

 for lime. Another area extends from a point about 2 miles south 

 of Sugarloaf past Stone Bridge, Warwick and New Milford into 

 ey. 

 Its character in this area is similar to that of the limestone 

 around Monroe and Turner, and a quarry has been opened in it 

 _ miles smith of Goshen, on the road to Warwick. 



It may at times become quite silicious, showing as much as 

 1 B silica, and there may also be a variation between the different 



l G list. N. Y. p. 4.-.S. 



T. Notes on the T,ower Helderherg rocks of Port Jervis, N. Y. 

 -< i. ."'1 Ber. l 

 V II Area "i" Upper Silurian rooks near Cornwall Station, east- 

 ern centra] V Y. [see Am. jour. sci. 188G. 3d ser. 31: 20 ( J) 



I ations from Green pond, X. J., to Skunnemunk mountain, 



NY. -<< BuL 5. ic. Am. p. r!<;7) 



w . B. Calciferoua ;i- well ;•- Trenton fossils in the Wappinger 

 linp and a Trenton locality at Kewburgh, X. Y. [set Am. 



joi 



i Bollick, A. The granites at Mounts Adam and Eve. (see 



. 

 Heinri on the geology of Orange county, [see 1.3th an. rep't 



geol. p. 

 \\ . W. Geol. 1st dist. X. Y. 1843. 



