Geologic Maps Geology 100 Geology for Environmental Scientists.

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Presentation transcript:

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