Geologic Maps
Geology 100
Geology for Environmental Scientists
Geologic Map of the US
Symbols found on geologic maps
Horizontal Strata
Geologic map of
part of the Grand
Canyon. Each
color represents a
different
formation.
Inclined Strata
Dome
Geologic map
of the Black
Hills of South
Dakota, a large
structural dome.
The Black Hills of South Dakota are a structural dome.
Basin
Bedrock geologic map of the Great Lakes region
Michigan Basin
Surficial geology map of the Great Lakes region
Plunging Folds
Geologic
map of
Valley and
Ridge of
Pennsylvania
Satellite image of
central
Appalachians
Area in last
picture
False color satellite image of folded sedimentary
rocks, central Appalachian Mountains.
Faults
Geologic map of thrust belt in Montana
Angular
Unconformity
Geologic Map
of the southern
Appalachians.
Note the
Nashville
Dome, folds,
faults, and an
unconformity.
Method for constructing a geologic cross section