Geologic Maps Geologic Principles Original horizontality Superposition

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Presentation transcript:

Geologic Maps Geologic Principles Original horizontality Superposition Cross Cutting

Angular Unconfromity Angular Unconformity Page 50

Relative Dating - Geologic Column Page 52

Geologic Structures Fault Page 53

Geologic Structures Page 54 Anticline Syncline Dome Basin

Geologic Maps Rock types and their distribution Show Bird's Eye View How Maps are made Topo Map base Outcrops (rock exposed at the earth’s surface) Draw contacts

Geologic Map Parts Formation A rock unit distinct from rock above and below e.g. Color and Symbols represent different formations Orange Formation in Northern Illinois Symbol Stratigraphic Column Cross Section

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