Gas- We II Sections i?i Central Nezv York. — Prosscr. 157 
13 
14 
15 
16 
17 
19 
26 
27 
28 
29 
1,380 
1.390 
1.505 
1,560 
1,580 
1,600 
1,740 
1,840 
21 
1.935 
22 
1.985 
23 
2.II5 
24 
2,16s 
5 
2,220 
2,255 
2,275 
2,290 
2,320 
Green argillaceous shale, 
non-calcareous. A few 
red grains of hematite 
(?). Clinton 
Clear green argillaceous 
shale. Clinton 
Greenish-gray silicious 
chips with some dark 
gray in color and a few 
reddish ones. Medina 
Dark red chips of fine 
grained, very silicious ss., 
with greenish-gray chips. Medina 
Mostly fine grains of red- 
dish quartz sand; some 
greenish and dark gray 
chips. "Gas sand." Medina 
Ditto. "Gas sand." Medina 
Sample composed of fine, 
red quartz grains. Medina 
Red, very silicious ss., 
chips coarser than in 
Nos. 18 and 19. Medina 
Ditto. 
Ditto, but chips are finer. Medina 
Rather darker red silicious 
ss., with some dark gray 
and greenish chips. Medina 
Ditto, but with some chips 
of red argillaceous shale. Medina 
Mainly fine reddish quartz 
sand, with a little red 
shale and a few greenish 
and dark gray chips. Medina 
Ditto. Medina 
Ditto. Medina 
Reddish quartz grains with 
more chips of the gray si- 
licious ss., and some of 
bluish or grayish shale. Medina 
About one-half the sample 
is composed of reddish 
quartz grains; the other 
half of greenish-gray si- 
licious ss., and greenish 
