تاقدیس

thumb|Cross-sectional diagram of an anticline thumb|Jim Crowley (USGS) standing in front of folded layers of banded iron formation of Hamersley Range, Australia. In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the location where the curvature is greatest, and the limbs are the sides of the fold that dip away from the hinge. Anticlines can be recognized and differentiated from antiforms by a sequence of rock laye