I would recommend the classic textbook by Galloway and Hobday (1996) , Terrigenous Clastic Depositional Systems; Applied to Fossil Fuels and Ground Water Resources: Springer-Verlag, Berlin. It is still used today as the best publication on interpreting well log motifs in terms of environment of deposition. I attended an all day remote workshop yesterday sponsored by the Southwest section of AAPG with the guest speaker Dr. Thomas (Mac) McGilvery of the University of Arkansas on this same subject. He referred to this book as well. In general, you want to select your flooding surfaces on the well log and then determine whether you are in a water level shallowing or a water level deepening environment by the log signature of the sands and where the presence of coal lies within the sequence.

Thank you very much. This is helpful. Sharon Cornelius

I would use Sharon's advice to get an idea of what your baselines could be from examples cited in the references she indicated.

The next step would be to integrate any subsurface core data sets you may have available in order to calibrate your logging responses against actual rock data sets obtained from the subsurface. Integrate the core analysis data sets and any interpretation you may be able to glean from the cores. This way you can attempt to calibrate your geophysical responses to actual rock data sets.

This is the methodology that has been employed in the Petroleum Exploration and Development fields as standard protocols.

Once you get your logs calibrated to the core data sets you can attempt to use drill cuttings as a proxy for the core data sets. Using drill cuttings does introduce errors through collection contamination.

If you wish please feel free to contact me and we can initiate an at length discussion regarding these and other methodologies.