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Folding

Geology
Plate Tectonics
Folding
Geological History

Image of Syncline and Anticline

Although there are more than just two kinds of folds we will only mention these two: Syncline and Anticline

These folds are caused by horizontal compression, forcing the rock layers to bend and twist.
Syncline: is a fold in a rock where the axis dips.
Anticline: is a fold in a rock where the axis is pushed up.

 

The Devil's Punchbowl is a large sandstone syncline, where the edges of the formation have been folded upward, and the center has dipped. The entire formation is not only a syncline, but a plunging syncline. This is illustrated in the graphic below.

image of plunging syncline