Geologic maps are two dimensional (2D) representations of geologic formations and structures at the Earth's surface, including formations, faults, folds, inclined strata, and rock types.
Geologists use geologic maps to represent where geologic formations, faults, folds, and inclined rock units are.
Geologic mapping is a highly interpretive, scientific process that can produce a range of map products for many different uses, including assessing ground-water quality and contamination risks; predicting earthquake, volcano, and landslide hazards; characterizing energy and mineral resources and their extraction costs
It helps define geological environment in terms of potential implementation of a particular engineering project, including its anticipated interaction with the planned engineering works in the area
