Ductile (Plastic) Deformation Folding. Stress vs. Strain Rheology Deformation Force.

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Presentation transcript:

Ductile (Plastic) Deformation Folding

Stress vs. Strain Rheology Deformation Force

Folded Structures 1.Anticlines 2.Synclines 3.Monoclines 4.Basins 5.Domes

Anticlines

Anticline - oldest rock formation in the middle.

Syncline - youngest rock formation in the middle.

Syncline in Eastern Tennessee

Plunge - the inclination of the fold axis

Plunge Measured from a horizontal line.

Monocline

Peru Monocline – caused by basement-block faulting

Fold Geometry

SymmetricalAsymmetricalOverturned

Anticlines and Synclines

Domes Oldest rock in center Basins Youngest rock in center

Map view of structures Map Symbols

Horizontal Strata

Inclined Strata

Dome

Black Hills Dome

Black Hills Geology

Basin

Plunging Anticlines And Synclines

Sheep Mountain Anticline, Wyoming

Wisconsin Arch Mich. Basin Cincinnati Arch Nashville Dome Ozark Dome Forest City Basin Kankakee Arch Illinois Basin Mississippi Rvr. Arch