Thin sections of the upper Smackover Formation taken from cores in seven wells from seven oil fields in Miller, Lafayette, and Columbia counties in southwestern Arkansas were analyzed for trends in primary porosity type and diagenetic features, including cementation, dissolution, replacement, and compaction. The seven wells were grouped into three diagenetic zones that generally correlate with Moore and Druckman’s (1981) original study.

IC-47 (1.33 MB)

Plate 1 (4.22 MB)

Appendix 1 (1.18 MB)

Appendix 2 (1.84 MB)