Abstract:
Understanding the Samana Suk Formation will help in understanding the
Pakistani Jurassic carbonates, which is the goal of this study. The Samana Suk
Formation revealed in this region is mostly made up of hard, compact, fine- to coarsegrained dolomitic limestones, with dolomite developing as a secondary diagenetic
characteristic in some areas. The limestone on the outcrop appears light grey on the
new surface and light brown on the aged surface. The limestone is enormous in certain
areas, planar, thin through medium to thick-bedded, and fossiliferous. We have
investigated and noted several features in the field, including stylolite fractures, calcite
veins, calcite patches, and dolomite beds and patches. A detailed depositional model of
the microfacies has been established based on the photomicrographs which shows that
these microfacies are deposited on the inner part of homoclinal ramp from lagoon to
carbonate shoal setting.
