The Salado Formation, or main salt, consists of thick halite intervals interbedded with anhydrite, polyhalite, and siltstone.
Hendrickson and Jones (1953) and Maley and Huffington (1963) noted the relationship between thinning in the Salado Formation and development of sinks in southeastern New Mexico.
The thickness of the Salado Formation is variable and the upper contact is irregular due to dissolution.
The late Permian Rustler Formation conformably overlies the Salado Formation.
A comparison of the structure map on the Salado Formation (Fig.
This dissimilarity, coupled with the lack of sagging of the Rustler Formation over the Salado Formation, and the thickening of the Salado Formation beneath the Cedar Lake Draw area indicates there is no correlation between thinning in the Salado Formation and formation of Cedar Lake Draw (Howard, 1985).