For clarity, Cebolla does not “lie” in the southeast corner of the San Juan Basin and it has not been drilled for decades to make Farmington the largest NM oil town.
Cebolla IS in the heart of the Rio Chama Watershed, on Hwy 84, and is even in BLM's Taos Office jurisdiction, and not that of the San Juan Basin's Farmington Office.
The Mancos Shale does not sit a couple thousand feet below the surface of Cebolla as alleged by Dave Evans.
The seasonally water-bearing Mancos Shale (especially the Elpedro soil derived therefrom) IS Cebolla's surface.
Thereunder, Greenhorn Limestone & Dakota Sandstone are just above the deeper water-bearing Morrison.