76 
GUIDEBOOK OF THE WESTERN UNITED STATES 
From Uvalde Station past Hacienda siding (ah-see-ane’da) , nearly to 
2) 
Anacacho Mtn. 
id te 
Alluvium 
“8 
Fiaure 7.—Sketch section —e Mountain south through Anacacho Mountain, Tex. 
the Nueces River, the railroad is on asmooth plain of 
alluvium. There i is a notable exposure of the uncon- 
formable contact of the Eagle Ford slabby limestone 
on the massive Buda limestone on the bank of the 
Nueces River 4 miles northwest of Hacienda siding, 
as shown in Plate 10, B. The Nueces River is in a 
shallow valley also floored by alluvium, with rocky 
banks at intervals. In dry weather it carries little 
water, but farther south it is a large watercourse, 
entering the Gulf of Mexico at Corpus Christi. 
In the days when Texas was a part of the Republic 
of Mexico, as a department of Coahuila, the Nueces 
River was its southern boundary, between it and 
Tamaulipas and Coahuila, both of which straddled . 
the Rio Grande; on the west Texas adjoined the 
States of Chihuahua (che-wah’wa) and Nuevo Méjico 
as far as the Red River. The available geographic 
data of those times were so few, however, that the 
contemporary maps were greatly distorted as to 
locations and distances. Under the Republic the 
wide area between the Nueces and the Rio Grande, 
long in dispute between Texas and Mexico, was a 
no man’s land, roamed over by Comanche and 
other Indians and by many outlaws. 
West of the Nueces River the railroad ascends 
into a region of low buttes and ridges of Austin 
chalk with scattered small outcrops. Trees are rare. 
: Lewis Hill to the north and Obi 
Cline. Hill to the south are igneous, intru- 
cso gad feet. _ sive masses (basalt), and larger bod- 
pvt ee ies of these rocks constitute buttes 
farther south. The chalk is covered 
by loam and sand (alluvium) near Cline and for 
some distance west, but it is visible in adjacent 
slopes. Eight miles southeast of Cline are exten- 
sive quarries in the Anacacho limestone, which there 
carries a ere ees of asphalt. (See pl. 10, 
EY odie south, as shown in Figure 7 
cae its iecteen part here, as in the region farther east, the pee 
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