1. This period was sufficiently long for the widespread planation of oceanic islands, many of them volcanic.

2. Terrain from southeast to northwest tilted planation surface southeast to the northwest to hilly areas.

3. The dating of planation surface is still an intractable problem.

4. In addition, the formation and evolution models of planation surface under various climate and tectonics still need to be generalized and abstracted.

5. These planation surfaces joined once each other imply that the vast southeastern part of China was in a state of peneplain during late geological period.

6. There have occurred bending and doming of a large number of planation surfaces and alluvialpluvial fans.

7. Field observation and analysis of the DEM of Western Sichuan Plateau indicate that, there are two planation surfaces and one erosion surface in Western Sichuan Plateau.

8. In China[], a main response is the rejuvenation of planation surface researches.

9. There can be distinguished four stages in their formation:glaciation, freezing weathering, aeolation and planation .

10. Ma, and lakes and top lacustrine deposits of Wudaoliang Group became base surface for erosion and peneplanation since Late Miocene, which formed planation surface or peneplain of the Tibetan Plateau.

11. This paper also analyzes the relation between the slopes and elevations and gets the information of planation surfaces in the Dabie orogenic belt.

12. The Carboniferous bauxite deposits in the western Henan Province occur on the planation paleosurface and was deposited in epicontinental seas or lakes of the North China Block.

13. The Nanling Mountains and their adjacent highlands mostly have an approximate altitude of 2000 m, where the top planation surfaces are still remained on some summits.

14. During Tertiary period, the secondary enrichment happened to the gold in weathering crust of planation surface.

15. 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.

16. Phase-transition analysis, age-boundary line analysis, correlation and crust of weathering analysis are all used in determining the age of the planation surface.

17. Besieged City accomplished defamiliarization through word concept conversion, temporary copy, adjust word order, planation separately, abnormality of collocations.

18. It was observed that the relative deposits of the Tertiary ieokarst, i e , limestone residual laterite, are widely distributed on the main planation surface of Plateau of Tibet.