PLATE 6 



Mississippian Tectonic Map 



Stanley, Jack Fork, and Johns Valley elastics of Ouachita Mountains are 

 shown as a Mississippian basin. They may be in part Pennsylvanian. LS means 

 La Salle anticlinal belt. It rose gently, was eroded, and buried before the 

 Mississippian period ended. Orange here indicates areas of orogeny, signifi- 

 cant uplift, or mountains of an immediately prior orogeny. In the Antler 

 orogenic belt both sedimentation and orogeny occurred. 





