408 
GEOLOGY OF THE FIRST DISTRICT. 
Section of Rocks on Great Neuten Hook. 
FEET. INCHES. 
1. Limestone, compact, blue, brecciated, and interstratified with slate in thin 
laminas_ 4 0 
2. Brecciated limestone, siliceous and impure_ 2 0 
3. Slate (fissile)_ 1 0 
4. Breccia like No. 2_••••_ 0 6 
5. Slaty grit and gritty slate, interstratified, interlaminated and striped with fine 
slate_ 15 0 
6. Limestone, breccia, like 2 and 4_ 2 0 
7. Limestone nodules imbedded in slate- 3 0 
8. Limestone interlaminated with slate_ 2 0 
9. Limestone, blue and compact, interstratified with coarse slate_ 9 0 
10. Brecciated limestone_ 2 0 
11. Black fissile slate_ 1 6 
12. Brecciated limestone_ 2 0 
13. Grit in layers half inch to one and a half feet thick, interstratified with fine 
slates, grey, black and yellow- 20 0 
14. Blue limestone like that east of Kinder hook or Fish lake, interstratified with 
finely laminated slate, both slightly undulating, and varying in thickness 
from half an inch to six inches- 30 0 
15. Grit, slaty, half an inch to one and a half feet thick, interstratified with fine 
striped slate, grey, black, yellow and brown_ 15 0 
16. Alternating strata of sandy and compact grits, with seams of crystallized 
quartz; the grit strata are one to two feet thick, and alternate with gritty 
slate and slate_ 25 0 
17. Grit (fine grained), but brecciated in some places- 4 0 
18. Slaty grits and gritty slates one eighth inch to fourteen inches thick, interla¬ 
minated with fine slate_ 25 0 
19. Yellowish sandy glistening grit, in layers one to one and a half feet thick 
(calciferous rock)- 5 0 
20. Slaty grit in layers from two to six inches thick. 5 0 
21. Yellowish sandy grit - 2 0 
22. Slate, unknown thickness, sixteen feet exposed above high water mark_ 16 0 
191 0 
4. At the north end of Great Neuten hook, the rocks dip both eastward and westward, so as 
to be about perpendicular to each other (Vide Plate 38, figs. 3-8). The strata consist of 
grits, slates and limestones. Great Neuten hook was once an island, but alluvial depositions 
have united it to the main land. The strata at Stockport landing and at Great Neuten hook 
are nearly the same, and the line of bearing is coincident in direction, and if prolonged from 
one, would reach the other. The strata generally, in that vicinity, range N. 20° W., about 
parallel to the trend of the shore between the points indicated. 
