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

Figure 3

Field photographs of host rock (limestone) and igneous intrusions in the study area. (a) Panoramic view of the outcrop showing the distribution of dolerite intrusions in the Khyber Limestone succession shown by white dotted line. (b) Close-up view of a dolerite dyke intrusion in the Khyber limestone marked by yellow dotted line. Note that the marble is formed due to contact metamorphism phenomena. (c) Sharp contact between limestone-dolomite units in the formation. (d) Isolated block of limestone shown by yellow dotted line within the dolerite intrusion, surrounded by light brown-colored dolomite.