1. If a set of rock layers has been disturbed by movement of tectonic plates, the youngest layer may no longer be on top.
The one closest to the surface because rock layers are laid down one on top of another.
The bottom layer of a sedimentary rock is called the basal layer. This layer is considered the coarsest in the rock.
Sandstone is a sedimentary rock formed from layer upon layer of deposited sand which undergoes lithification.
Unconformity= break in sedimentary rock record
A stratum.
Clay
On the top
sedimentary layer ㅡㅡ
The one closest to the surface because rock layers are laid down one on top of another.
The "youngest" (newest) sedimentary rocks are a few million years old, those that underwent rapid compaction in the shortest lithification process.
a layer of rock
The bottom layer of a sedimentary rock is called the basal layer. This layer is considered the coarsest in the rock.
This is Shale, a Sedimentary rock.
Unconformity
Then you would be able to observe the next to the youngest rock layer.
Sandstone is a sedimentary rock formed from layer upon layer of deposited sand which undergoes lithification.
Unconformity= break in sedimentary rock record