What are some other types of weathering apart from onion skin, freeze-thaw, chemical, and biological?

Question

What are some other types of weathering apart from onion skin, freeze-thaw, chemical, and biological?

Answer 1

Onion skin and "freeze-thaw" are both forms of physical weathering - actual breaking of rocks into smaller bits. Chemical weathering is actually changing the composition of the rock due to chemical reactions (with water and acids mostly), making it fall apart.

The two types of weathering interact - physical weathering breaks the rock up, so more surface area is exposed to chemical weathering. "Biological" weathering is actually a combination of physical and chemical - acids released by plants enhance chemical erosion, while roots and burrowing (some bivalves burrow straight into rocks!) are physical weathering processes.

Answer 2

physical: you only included some physical traits, add the rest!

Answer 3

non u have them all

Answer 4

Wind sheer!  Constant beating from heavy winds, particularly if small particles of sand or grit get picked up by it slowly erode stone by sand blasting it.

Surely erosion caused by waves counts too.

Answer 5

Mechanical weathering - temperatures play an important part. in cool moist areas cracks in exposed rocks often fill with water. when temperatures drop below freezing point the water turns to ice. as a result the ice exerts pressure on the cracks. frequent freezing and thawing eventually break large boulders apart, on steep slopes the fragments tumble downhill. in hot regions rock expands when its heated, which causes the outer shell to peel away from the rock.