Isopach maps record the thickness of geological formations. The following are benefits that oil exploration teams derive from using them:
1. Professionals can use the maps to analyze swelling and shrinking of formations over time.
2. While isopach mapping does not record formation depth, it does offer information about potential hydrocarbon reservoirs and coal seams, which is useful for planning drilling expeditions.
3. If taking readings on an almost horizontal upper surface, a person can interpret the diagram as a paleotopographic map.
4. Isopach maps work well for finding buried structures in areas where formations are thinning over structural crests.
5. Each line connecting points illustrates formations of equal thickness, which, when combined with data from seismic surveys, geological maps, and drilling surveys, create a detailed base map.