Where does the earth’s crust come from, and how can there be new layers added on top of the earth isn’t getting bigger?

Question

Layers of crust from millions of years ago are in layers below the outermost crust, which would make sense if the earth was constantly growing in mass and size. Like in millions of years we will fossilize and structures will be buried but unless things just sink into the ground or there is mass added how do older layers of crust get underground?

In: 7

Answer 1

There’s lots of factors that contribute, for example wind and rain will spread dust and mud over the surface, give it enough time and layers will be formed. What’s even faster is nature. If you have a paved road that goes through a pine forest and just leave it alone for a few years, the pine needles will cover it and turn into soil, hiding it completely. Leave it a few decades and you’ll have to dig deep to reach it.