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The ever-increasing demand for energy and hydrocarbons coincides with gradual depletion of currently producing conventional oil and gas reservoirs. Therefore new exploration plays are extended to more complex oil and gas plays, such as karstified limestones and hydrothermal dolomites. Furthermore production from currently producing reservoirs is optimized by revisiting or improving the geological knowledge of these reservoirs. These two perspectives are covered in this study on dolomitization in association with magmatic processes and karstification of platform carbonates. The spatial distribution of the reservoir facies is of great importance in heterogeneous reservoirs, such as karstified limestone and dolomite. Gathering 3D high-resolution (spatial) data from the subsurface is often not possible. Outcrop analogue studies are typically used to overcome this obstacle. By studying rocks in outcrop, that are similar to the reservoir rocks, the 3D architecture of the reservoir facies can be assessed in great detail. Furthermore this allows to unravel the diagenesis of the rocks, without depending on wellbore positioning, that might miss specific but significant diagenetic features. Outcrop analogues can provide the essential 3D distribution of the reservoir facies and characteristics that cannot be derived directly from the subsurface. Furthermore outcrops can be studied at high resolution on reservoir scale

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