THE SANTA FE ROUTE. 93 
Three miles west of Suwanee there is an extinct hot spring or 
geyser cone not far south of the tracks. (See Pl. XIII, B, p. 75.) 
It contains a shallow crater 30 feet in diameter with walls of a hot- 
spring deposit, which also constitutes the low cone in which it is situ- 
ated. The form of the bowl and cone indicates that at a time not 
very remote there was at this place a hot spring, or possibly a geyser, 
similar to those now active in the Yellowstone Park. South of 
Armijo siding a large valley from the south enters that of the San 
Jose. About 10 miles up this valley is a large recent volcanic cone, 
Cerro Verde (vair’day), and its lava flow appears to extend down to 
the San Jose Valley. 
RITO ROSARIO 
ie aes *74 Gray massive sandstone 
“1 of Laguna and Acoma 
-_+ "| Buff sandstone 
‘| (Dakota) 
Shale (Morrison) 
iF Red sandstone 
Gypsum 80 Gypsum 60” 
pai Limestone (thin layers) ee | imestone(thin layers) 
KA 4 deat, 
1+ 1] Massive sandstone 7 
".° Jd (gray above,redbelow) © creo, ‘| (buff above, red below) 
Wingate) : ae 
Red shale 
FIGURE 18.—Secti howi lati f bed at Rito and near Rosario, N. Mex. 
> ovr 
At Rito (ree’to) the railway passes a small pueblo (El Rito) of 
Laguna Indians, built on a low lava-capped plateau a short distance 
south of the railway. There are now only a few 
Rite. Indians at this place, as those living higher up the 
Favation 5,064 feet. valley cut off the water during the irrigating season. 
tees ONY 1 miles. Mh ese Indians subsist by raising sheep and goats and 
cultivating small crops. 
South of Rito there is a high mesa of red and buff sandstone (Zuni) 
‘extending far to the south. To the north is a high cliff capped by 
bright-red sandstones, at the base of which is the outcrop of a great 
deposit of pure-white gypsum, 50 feet or more thick. As shown in 
Plate XIV, B (p. 96), it extends along the north side of the track 
for some distance. It is one of the most prominent exposures of 
gypsum known, rivaling the one east of Rosario station (see p. 82) 
and apparently of the same age. Figure 18 is introduced to show 
the succession of rocks in which the gypsum occurs at both places. 
This bed of gypsum crops out at several points in the region between 
Rosario and Rito with the same relations to adjoming rocks, so that 
there is no doubt as to its continuity. It is the same deposit which 
is exposed north of Suwanee, as shown in figure 17. It has been 
97579°—Bull. 613—15——7 
