The crustal thickness together with the depositional architecture (e.g. porosity and permeability) should be used to determine the subsurface fluid circulation in terms of hydrocarbon exploration within the rifted basin. The intrusives are potential targets for solid minerals.
Key words: Bouguer, Airy Heiskanen model, isostatic residual, free air, isostatic regional gravity, 2.5D gravity model.
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