Fra Cristobal Mountains

In the fra cristobal and caballo mountains of sierra county, new mexico, the lower permian middleupper wolfcampian abo formation disconformably overlies the upper pennsylvanian newwellian bursum formation or middle upper pennsylvanian desmoinesianvirgilian bar b formation and is conformably overlain by the lower permian leonardian arroyo de alamillo formation of the yeso.