Petrographic analysis by Dr AO Wilson (Saker Geological Services) and Prof BW Sellwood (University of Reading), originally prepared for PGA et al (1987) Sedimentary Geology and Diagentic History of the Jurassic to Permian Rocks of North Iraq.
REVISIONS
2006: Wireline logs added and stratigraphy revised.
2009: Stratigraphy revised.
2010: Associated digital photomicrograph library prepared.
2014: Stratigraphy revised.
2016: Redrafted, Lithology revised based on the original petrography, also incorporating data from cuttings descriptions from PGA et al (1985). (IPC thin sections underestimate shale content).