Cuesta del Cura Limestone

 
 
Cuesta del Cura Limestone  exposed at Los Chorros Canyon of highway 57 (monterrey-Saltillo-San Luis Potosi). This was the outcrops exposed before the recently reconstruction of the highway. Note the prattle, evenly bedded, continuous stratification of the limestone layers. Chert layers and bands are abundant and irregularly distributed throughout the unit. This limestone are pelagic biomicirtes containing abundant planktics and calcified radiolarians.  Disharmonic  folding is a common feature of the Cuseta del Cura Limestone.