A summit accordance (sometimes also known by the German loan word gipfelflur) exists when hills and mountaintops, and eventually also
plateaux, have such a disposition that they form a
geometric plane that may be either horizontal or tilted. Summit accordances can be the vestiges of former continuous
erosion surfaces that were uplifted and
eroded.[1] Other proposed explanations include:[2]
the possibility that erosion becomes more effective at height, tearing down mountains that stand out
that
isostasy regulates the height of individual mountain masses meaning that small mountains might be uplifted and large mountains dragged down
that landscape dissection by uniformly spaced streams eventually reach a state in which summits attain similar heights
that summit accordance is derivative of
structural planes exposed by erosion
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Beckinsale, Robert P.; Chorley, Richard J. (2003) [1991]. "Chapter Seven: American Polycyclic Geomorphology". The History of the Study of Landforms. Vol. Three. Taylor & Francis e-Library. pp. 235–236.