What Is Onion-skin Weathering?

Onion Skin Weathering is basically a form of Weathering. Another name for Onion-Skin Weathering is Thermal Expansion, insulation weathering, exfoliation, thermal shock etc.

This kind of weathering occurs in areas with large diurnal temperature range such as a dessert. Since the temperature is high in the day and low at night, the rocks heat up and expand during the day and cool and contracts by night. The outer layers of rock experience stress this way, which in turn causes peeling off of outer layer of rocks.

The rock heats up and expands by day, then cools and contracts by night, this puts stress on the outer layer of the rock and causes it to peel off.
This type of weathering occurs in areas with high temperatures such as deserts.

Onion skin weathering is when a rock is heated up to high temperatures and then cooled down the extreme low temperatures quickly which causes the parts of rock to fall off.

Onion skin weathering occures when the heat causes the rock to expand and the cold causes it to contract. Over many years, flakes of rock peel away. This mainly occurs when extreme weather changes happen during the day and the night, you get it a lot in deserts. XD

Onion skin is a physical weathering

Onion skin weathering affects sedimentary rocks such as slate. Onion skin weathering is so called because when it affects something, that object looks as if layers of it have been peeled away (like an onion).

Onion skin weathering is most common in the dessert when the days are hot and the nights are cold. The rock slowly starts to peel and layers come off like an onion

Hello
onion skin is cool

There are all different types of minerals witch expand and contract at different rates, this causes the rock to peel away at different rates, it is known as differential mineral expansion.