Linked from
The 7 pages that link to Geologic map, each with the reason it gives.
Structural geologyRelated: Map patterns expose folds, faults, and regional structural relationships.
Relative datingRelated: Relative age relationships help determine how mapped units are ordered.
LithologyRelated: Mapped units are commonly differentiated and labeled by lithology.
Stratigraphic unitRelated: Mapped units make the regional arrangement of rocks legible.