What Is a Basin Map?

A basin map is a geological map focusing on sedimentary basins—crustal depressions filled with thick sediment sequences. It shows:

• Basin outlines and morphology
• Stratigraphy (unit distribution, thickness, age)
• Structural elements (faults, folds, unconformities)
• Petroleum systems (source, reservoir, seal, migration)
• Basement structure
• Isopach contours (equal sediment thickness)
• Paleogeographic reconstructions

Compiled from seismic, well logs, and surface data, basin maps guide hydrocarbon exploration, groundwater studies, and hazard assessment.