Lesson 52 : How to Create Geological Maps in GIS

Geologic maps

Geologic maps are uniquely suited to solving problems involving Earth resources, hazards, and environments. Geologic maps represent the distribution of different types of rock and surficial deposits, as well as locations of geologic structures such as faults and folds. Geologic maps are the primary source of information for various aspects of land-use planning, including the siting of buildings and transportation systems.

The combination of geologic maps and GIS databases help us address a great variety of complex geologic and hydrologic issues, such as: How does subsurface distribution of porous and impermeable rock affect the flow of water, the potential for contamination, and the volume available for use.