rough material / additive and subtractive processes

 

ROUGH MATERIAL
SHAPES, TEXTURE
 

"That additive and subtractive topography-formingprocesses are so commensurate is one of Earth’sextraordinary attributes. The landscape of other rockyplanets and moons look alien precisely because theseworlds lack such a balance in the rates of creative anddestructive topographic agents.[…]
However, life itself can alter the processes that shapetopography: there is strong evidence that colonisation of land by plants in early Silurian time slowed global erosion rates and led to the emergence of rivers with well-definedchannels. (It has taken humans only a few centuries toreverse that trend; by some estimates, modern erosionrates—accelerated by deforestation, agriculture, desertification,and urbanisation—are orders of magnitude higher thangeologic averages.)" —MARCIA BJORNERUD / TIMEFULLNESS