DIP AND STRIKE OF STRATA. 
609 
No. 
strike. 
Dip. 
Kind of rook. 
LOCALITIES. 
106|n35°E. 
1 A-yriM mol? 
N 80°, W 85° to 90°.. 
Gneiss with granite veins.. 
From Tenth to Eleventh avenue on 70th-street. 
From Eleventh avenue to river on 70th-street. 
On the shore of the Hudson at 70th-street. 
108^ 
N 30° E. 
Vertical . 
Gneiss with granite veins 
three to ten feet wide, and 
quartz veins one to four 
feet wide. 
WESTCHESTER COUNTY. 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
N 25° E. 
N25°to30°E. 
do do 
Northward.... 
N and S. 
do . 
N 32° E. 
do . 
N20° to 36° E. 
do do 
NE. 
N 30° E. 
do . 
do . 
do . 
N 70° E. 
N 20° E. 
NNE . 
E and W ..... 
N and S. 
N 70° E. 
Easterly. 
NNE . 
Eastwardly.... 
N 30° E. 
N20°E. 
N 22° E. 
N 70° W. 
WNW 60° to 80°.... 
WNW 80° 
Westward 80°. 
West 50°. 
do . 
Westward 80° to 90° . 
do° do 
Sometimes eastward 
and sometimes west¬ 
ward 
do do 
NW 70°. 
N 60°, W 80°. 
Nearly vertical. 
N 60°, W 60° to 80° . 
N 60°, W 80° 
N 30°, W 60° 
Vertical 
S 20°, E 80° 
Southerly 80°.. 
ESE 30° to 40° 
Vertical and contorted 
S60°E . 
Vertical. 
About S 58°, E 45° .. 
Gneiss . 
Gneiss, hornblendic gneiss, 
hornblendic slate, mica 
slate, etc. 
Micaceous limestone having 
the general aspects of 
gneiss 
Gneiss, mica slate, and lime¬ 
stone. 
Grey limestone.. 
Mica slate, east and west of 
the above limestone 
White marble. 
Micaceous gneiss. 
Gneiss, limestone, and mica 
slate 
do do 
Limestone. 
Gneiss. 
White limestone. 
Gneiss . 
White limestone and gneiss 
alternating (Cassels) 
Limestone with gneiss on 
each side 
Gneiss covered with drift 
scratches (Cassels) 
Limestone and hornblende 
slate and veins of trap 
White and grey limestone . 
do do 
Gneiss very slaty. 
Gneiss used as a quarry 
stone 
Gneiss, with some granite 
veins and interstratified 
masses 
Micaceous limestone. 
Limestone (white) used for 
burning lune 
Limestone and altered rocks 
Limestone lying on granite 
New-Rochelle. 
Between Byram river and New-York, along the coast. 
Northeast of Harlem, half a mile. 
Between Tarry town and Whiteplains. 
Two and a half miles west-northwest of Whiteplains, 
at Elijah Martin’s quarry. 
A few rods west of the above quarry by the roadside, 
also a quarter of a mile east, 
Kane and Morgan’s quarry. 
Bounding the above marble east and west, ranging 
northward west of Whiteplains. 
Between Phillipsburgh and Whiteplains. 
Generally through Westchester county, with many 
local exceptions. 
One mile west of Whiteplains. 
Valentine’s quarry, two miles east of Yonkers. 
Mathew’s marble quarry, Westchester. 
From Whiteplains to Bedford, by the northeast cor¬ 
ner of Northcastle, the valley of the Bronx and 
Byram pond. 
Near Mr. Knapp’s house near Cross pond. Pound- 
ridge. 
Between Long and South ponds, Salem. 
About two miles southeast of Verplanck’s point, on 
the postroad, Cortland. 
At Verplanck’s point (Cassels). 
On H. I. Cruger’s farm, Cortland. 
On H. I. Cruger’s farm, south of the preceding. ■ 
At the coal mine at Peekskill landing. Carbonaceous 
matter as thick as coats of varnish through about 
four feet of rock. Two veins of matter about four 
to ten inches thick, something like plumbago 
(Cassels). 
Solomon Bundle’s quarry near the upper dock, Peeks¬ 
kill. 
Van Cortland’s quarry, northwest of Roya point. 
Half a mile east of Peekskill, on the hill not far from 
the academy. 
On Mr. Miller’s farm near Mill creek; the outlet 
of Crum pond, three miles south-southeast of 
Crumpond village. 
“ Copper mine ” near Sparta, Mount-Pleasant. 
On the north side of the point at Sparta, Mount-Plea¬ 
sant. 
Geol. 1st Dist. 
78 
