Post-deposition
During inter- and post- Mississippian subaerial exposure facies underwent further diagenesis
- sponge spicule dissolution
- vuggy porosity development in moldic rich rocks
- Autobrecciation
Areas of increased diagenesis can be correlated with basement lineaments
- Recurrent movement
- Create topography for exposure
- Local preservation in lower relief blocks
- Bounding fault seals
Meteoric water influx, or the range of the mixing zone controlling diagenesis
- Limited in depth below the exposure surface
- Limited in depth downdip into unaltered cherty Cowley Formation facies
Combination of original accumulation, block fault movement, sponge spicule concentration, and possibly thickness of overlying bioclastic wacke-grainstones resulted in variable reservoir properties and the creation of pods of production separated by non-productive cherty dolomite mudstones.