1. Cryogenic processes were latecomers to the planation lexicon

2. In China, a main response is the rejuvenation of planation surface researches.

3. Towards the south, Neogene planation has eroded the Paleogene pediplain, although major pediplanation and aggradation had everywhere ceased by the Upper Miocene when canyon formation commenced.

4. 8 During the Pliocene to early Pleistocene strong NW-SE crustal extension resulted in disintegration of the planation geomorphology and formation of a graben basin in the area.