Homocline

They are terms that have been used in a mutually exclusive manner as a synonym for either a homocline[7] or monocline[8][9] depending the author.

For example, the erosion of homoclines consisting of resistant beds of either limestone, sandstone, or both interbedded with weaker, less resistant beds of either shale, siltstone, marl, or combination of them will produce either cuestas, homoclinal ridges, or hogbacks depending on the angle of dip of the strata.

The greater the difference in the resistance to erosion, the more pronounced the structural control and relief between valley and ridge crest.

[3][4][5] According to Whitney in 1890[12] and Kelley in 1955,[13] Charles Darwin used the term uniclinal prior to 1843 to describe to strata dipping uniformly in one direction.

[13] Thus, the term monocline was used to describe both beds dipping in one direction and a one-limbed flexure with different authors making incompatible distinctions between them.