DIP AND STRIKE OF STRATA. 
617 
NE and NNE 
NNE and NW 
Neariy horizontal . 
Vertical. 
NW and WNW 1° to 
8° 
WNW and SW, at 
small angle of 1° to 
5° and 8° 
Eastward 12° to 80' 
E and W nearly 
13N30°E., 
Red ealcaraous conglome¬ 
rate 
Talcose slate, on the north¬ 
west side of the above, 
conglomerate 
Red sandstone. 
Red sandstone in both pa¬ 
rallel ridges 
Verd antique marble., 
Gneiss streaked with horn¬ 
blende. 
Gneiss, with beds of greinite 
LOCALITIES. 
Near Beebee’s furnace, on the banks of the Minishe- 
congo creek. 
Generally underlying the trap rocks of Rockland 
county. 
From Dobb’s ferry to Haverstraw at Nyack, and vari¬ 
ous places. 
At Tompkins’ quarries on the Hudson, one and a 
half n^e above Stony point. Rocks warped and 
variable. 
Between Hackensack and Barber’s creeks. 
On the shore of the Hudson, about one mile south of 
Caldwell’s landing (Cassels). 
Near the turnpike gate on the top of the mountain. 
Farther west than the above, on the turnpike. 
On the western declivity of the eastern range of 
mountains, towards Kyle’s valley. 
A few rods from the preceding, which was only s 
local variation from the general range of N 30' 
Blauvelt’s quarry three miles northwest of the “ New 
city,” on a hill one hundred feet high. 
Westervelt’s quarry, on the shore one mile above 
Nyack. 
Various quarries along the shore of the Hudson be¬ 
tween Piermont, Nyack, and Haverstraw. 
ORANGE COUNTY. 
Slate and limestone.Between Newburgh and Marlborough, 
Argillite, Hudson slate.... 
Grits, greywacke, dip appa¬ 
rently under the primary 
rocks, conformable and at 
the same high angle 
Newburgh limestone 
Newburgh limestone, or 
Barnegat, or calciferous 
Fossiliferous limestone 
the Champlain division 
Black, grey, compact lime¬ 
stone, not fossiliferous 
At the northeast corner of the county. 
Nearly all the country east of the Walkill river, 
rocks dip eastward. 
Along the Walkill and westward from the New-Jer- 
sey line to Rondout, rocks dip westward. 
Highlands of Orange (Dr. Horton). 
On the west side of Butter hill, and on the road from 
West-Point to Canterbury. 
Between the Highlands and Shawangunk, 
To the northeast of Bellevale mountain, on the west¬ 
ern side of the ridges. One mile west of the 
“ Friends ” church in Monroe. On the west side 
of Goose-pond mountain, and on the west side of 
Sugarloaf mate. 
Generally in the vicinity of Newburgh. 
Hampton on the shore of the Hudson, and Dow’s cor¬ 
ner, another high ridge at the north end of New¬ 
burgh bay. 
One half mile southwest of Ketcham’s mill, 
if Near Thomson’s limekiln, Goshen. 
Mount Lookout, one mile west of above. 
Great island in the drowned lands, and thence south¬ 
ward to the New-Jersey line. 
Geol. 1st Dist. 
80 
