sedimentary layer ㅡㅡ
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
Sandstone is a sedimentary rock formed from layer upon layer of deposited sand which undergoes lithification.
Unconformity= break in sedimentary rock record
On the top
Clay
because sedimentary rocks are on the top layer, while igneous rocks are were the magma is
Unconformity
soil
A stratum.