SIERRA 

 CONCORDIA 



SIERRA CUPIOO 



SIERRA 

 GARAMBULLO 



LEGEND 



SEDIMENTARY ROCKS 

 RECENT | Qa [ ALLUVIUM 



PLEISTOCENE 



I"q"1 





SIERRA 

 GUITARRA 



SIERRA 

 MESQUITE 

 OEL SUR 



SIERRA SIERRA 



MESQUITE BE ^ R N A D0 SIER«A D| 

 OEL NORTE / — .. UOSPINOS 



SIERRA 

 CANEJO 



?< 



E3 



AURORA LIMESTONE 

 kKlpH LA PENA FORMATION 

 ■Jkcu) CUPIOO LIMESTONE 



TARAISES FORMATION 



LA CASITA FORMATION 

 LA GLORIA FORMATION 



El 



OXFOROIAN 



ICNEOUS ROCKS 



CCNOZOIC ? SZ?1 PORPHYRY AND GRANITE 



SIERRA 

 MESQUITE 

 DEL NORTE 

 Ka kc 



SIERRA DE 



SAN FRANCISCO 



Kip 



SIERRA 



MESQUITE 



OEL NORTE 



ELEVATION ABOVE 

 MEAN SEA LEVEL 

 IN FEET 



VERTICAL ANO HORIZONTAL 

 SCALES IDENTICAL 



Fig. 28.4. Cross sections of the middle part of the Sierra de Parras, Coahuila, Mexico. Reproduced from 

 Imlay, 1937. 



