BERKEY, GEOLOGY OF SOUTHERN MANHATTAN ISLAND 275 
a) Manhattan Side. ( Continued .) 
Serial No. 
Original 
mark 
Location 
Depth 
to rock 
M. H W. 
To Rock 
U. S. 
datum 
Rock 
penetra¬ 
tion 
Form¬ 
ation 
Variety and remarks 
226 
119 
E. side 1st Ave. 
bet. 33 & 34 Sts. 
-32' 
-29.5' 
53' 
? 
Black and white gneiss 
227 
120 
Ditto 
-50' 
-27.5' 
6' 
Manh. 
Hornblende schist 30°. 
228 
109 
20' E. 1st Ave- 
bet. 33 & 34 Sts. 
-33' 
-30.5' 
53' 
Not found. 
229 
118 
40' E. 1st Ave. 
bet. 33 & 34 Sts. 
-24' 
-21.5' 
61' 
Manh.? 
Schists. 
230 
108 
60' E 1st Ave 
bet. 33 & 34 Sts. 
-23' 
-20.5' 
68' 
Manh. 
Close texture mica schist, 
231 
116 
156' E. 1st Ave. 
bet. 33 & 34 Sts. 
-53' 
-50.5' 
o' 
Garnetiferous mica schist. 
232 
117 
156' E. 1st Ave. 
bet. 33 & 34 Sts. 
-44' 
-41.5' 
5' 
“ Anthophyllite ” and 
mica schist. 
233 
115 
135' E. 1st Ave. 
bet. 33 & 34 Sts. 
-54' 
-51.5/ 
5' 
Mica schist. 
234 
111 
65' E. 1st Ave. 
bet. 32 & 33 Sts. 
—22' 
-19.5' 
68' 
235 
114 
70' E. 1st Ave. 
bet. 32 & 33 Sts. 
-34' 
-31.5' 
52' 
236 
113 
90' E. 1st Ave. 
bet. 32 & 33 Sts. 
-46' 
-43.5' 
44' 
Not found. 
237 
no 
100' E. 1st Ave. 
bet. 32 & 33 Sts. 
-30' 
-27.5' 
59' 
Manh. 
Mica schist, close texture. 
238 
112 
120' E. 1st Ave. 
bet. 32 & 33 Sts. 
-30' 
-27.5' 
60' 
U 
Mica schist and peg¬ 
matite. 
b) Long Island City , between Borden and Flushing Aves. and eastward along the East River. 
239 
102 
90' W. of Front 
St., Nassau Slips 
-24' 
-21.5' 
56' 
Ford. 
Granite gneiss. 
240 
105 
85' W. ditto 
-29' 
-26.5' 
5' 
“ 
“ 
241 
106 
85' W. ditto 
-38' 
-35.5' 
43' 
“ 
“ “ 
242 
99 
85' W. ditto 
-26' 
-23.5' 
54' 
“ 
Granodiorite (light col¬ 
ored) 
243 
101 
105' W. Front 
St., So. Nassau 
Slip 
-31' 
-28.5' 
49' 
Granite gneiss. 
244 
104 
100' W. ditto 
-27' 
-24.5' 
53' 
“ 
Granodiorite gneiss. 
245 
W 
170' W. ditto 
-32' 
-29.5' 
25' 
Pegmatite and grano 
diorite gneiss. 
246 
95 
95' W. ditto 
-33' 
-30.5' 
47' 
“ 
Granodiorite gneiss. 
247 
X 
85' W. ditto 
-23' 
-20.5' 
10' 
Not found. 
248 
100 
45' W. Front St., 
Nassau Slip 
-22' 
-19.5' 
58' 
Ford. 
Granodiorite gneiss. 
249 
103 
45' W. Front St., 
Nassau Slip 
—24' 
-21.5' 
56' 
Not found. 
