Modifications to middle and upper Jurassic nomenclature in the southeastern San Juan Basin, New Mexico
Steven M. Condon
Units in the southeastern San Juan Basin and Acoma sag previously known as the Bluff Sandstone and Zuni Sandstone have been reassigned to other formations. The lower part of the Bluff Sandstone is no longer recognized in this area, and instead the sandstone is correlated with the Horse Mesa Member of the Middle Jurassic Wanakah Formation. The upper part of the Bluff Sandstone, also known as the Zuni Sandstone, is not recognized as a separate formation, but rather is interpreted to be an eolian facies of the Recapture Member of the Upper Jurassic Morrison Formation.
- Condon, Steven M., 1989, Modifications to middle and upper Jurassic nomenclature in the southeastern San Juan Basin, New Mexico, in: Southeastern Colorado Plateau, Anderson, Orin J.; Lucas, Spencer G.; Love, David W.; Cather, Steven M., New Mexico Geological Society, Guidebook, 40th Field Conference, pp. 231-238.