Art. IX.] Herrick-Johnson, Geology of the Albuquerque Sheet 239 
PLATES XLIX-LII (Inclusive ) 
These illustrations are intended to accompany the section on building ma- 
terials and to indicate the use made of the available resources. The churches 
are for the most part built of local brick or flagstaff sandstone. The Grant 
block (Plate L) is of Kansas City red brick with buff trimmings. The 
fine building of the commercial club *is wholly built of Flagstaff red sand- 
stone. (Jura-triassic ?) The school houses are built of local red brick. Several 
private residences are shown dating from an earlier period of the city’s growth. 
PLATE LIII. 
Ftg. I. Lignite bands in upper (Fox Hills) cretaceous. Mesa Isleta mono 
dine, Rio Puerco valley. 
Fig. 2. Same as above, showing eroded pinacles of white sand below 
the lignite. 
PLATE LIV. 
Fig. /. Mesa Isleta monocline, from a distance. 
Fig. 2. Concretionary zone in Santa Fe marls. West side of Albuquer- 
que mesa, near Fig. i. 
PLATE LV. 
Fig. I. Punta de la Mesa sandstone west of the Coralles-Cabezon road, a 
few miles south-east of Cabezon. 
Fig. 2, Vermilion beds as exposed in valley-south-west of Serrita mesa. 
Top of chocolate beds showing at base. 
PLATE LVI. 
Fig. i. Serrita mesa, southern end of Nacimiento range. Gypsum beds 
showing at base. The figure does not clearly show the stratification which is 
very distinct to the eye. 
Fig. 2. Upper Cretaceous shales, sands and lignite west of the north end 
of Albuquerque mesa. In the coal series. 
PLATE LVII. 
Figs. I and 2. Eroded Santa Fe marls, west side of Albuquerque mesa. 
PLATE LVIII. 
Fig. 1. Tres Hermanos sandstone, showing the large concretions. 
Fig. 2. Same sandstone with layer of indurated sandstone above. 
