Anticline fold developed due to bending of soft sedimentary strata on the hangwall of a synsedimentary listric normal fault. Its a regional structure, mostly seen in a passive continental margin.

This type of fold usually occurs in sedimentary rock formations that have been subjected to compressional forces, which can cause the layers of rock to bend and fold.

In a rollover anticline, the layers of rock on either side of the fold dip in opposite directions, with the axis of the fold dipping in the same direction as the overlying layer. The term “rollover” refers to the way that the layers of rock roll over each other as they bend, creating the characteristic shape of the fold.

Rollover anticlines are important in the oil and gas industry because they can trap hydrocarbons within the folds of the rock. Geologists use various techniques, including seismic imaging, to identify and map out these structures in order to locate potential sources of oil and gas.