SHUMARD—GEOLOGY OF N. MEXICO. 279 
- These beds appear to be p cree nt e as those ob- 
served on Delaware Creek, irty mil es above its confluence. 
The floor of the ete is boner smooth, but here and 
there marked with and abrupt conical hills of sand- 
stone and — om one to two hundred feet high. 
“sdulos gillaceous, and, in some pla- 
ces, silicious. 
‘oihetb ehooe distance from this t, we begin to approach, 
Seer of the Guadalupe Moun- 
from: described. places, the sandstone is 
ste, by den ation, to the wean of six hundred feet. 
limestones are confined mostly to the sos 
a thi of nearly fo 
¥ aa nave ss gener Sepeseaes ascent 
