Mapping sedimentary basins requires the use of various methods and tools, depending on the scale, purpose, and data availability of the project. Structural mapping involves mapping the faults, folds, and fractures that affect the basin structure and deformation. This can be done using seismic reflection, gravity, magnetic, or electrical methods to map the subsurface structures and correlate them with surface features. Stratigraphic mapping is concerned with mapping the distribution, thickness, and correlation of sedimentary layers within a basin. Seismic stratigraphy, well logs, biostratigraphy, or chemostratigraphy can be used to map the stratigraphic units and their boundaries. Facies mapping involves mapping the variations in sedimentary characteristics, such as grain size, texture, composition, and fossils within a basin. Facies analysis, sequence stratigraphy, or geostatistics can be employed to map the spatial and temporal changes in sedimentary facies and their relationships with depositional environments. Lastly, geochemical mapping involves mapping the chemical and isotopic composition of sediments, fluids, and rocks within a basin. Geochemical analysis, basin modeling, or organic geochemistry can be used to map the source, maturity, migration, and accumulation of hydrocarbons and other resources within a basin.