Diagenetic Modifications and Reservoir Heterogeneity Associated with Magmatic Intrusions in the Devonian Khyber Limestone, Peshawar Basin, NW Pakistan

Figure 4

Field photographs of major diagenetic phases (marble, dolomites) in the study area. (a) Contact relationships between limestone/marble with igneous intrusion and dolomite. Note that isolated blocks of limestone frequently occur within the succession. (b) Black igneous dyke material in contact with medium grey dolomite. (c) Irregular contact between light grey limestone and dark brown dolomite. (d) Cut slab showing dark brown, sugary textured dolomite Dol. II in contact with light brown dolomitic marble; inset shows a close-up view of the pore-filling dolomite (Dol. II) and dolomitic marble (DM). Lm St: limestone.

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