Examples from the Web for peneplain
At a stage shortly preceding the base-level stage the surface would be a peneplain.
Immense regional intrusions, the cores of once lofty mountain ranges, are found upon the Laurentian peneplain.The Elements of Geology|William Harmon Norton
This surface, or “peneplain,” was probably the result of denudation working away the beds almost to sea-level.
They appear to correspond with the level of the first peneplain recognized in the Devil's lake region.
Like the deep decomposition-soils in moister regions, it indicates a peneplain on which erosion has ceased.The Argentine Republic|Pierre Denis