it is actually both. it is classed as a sedimentary rock, and to say that is it stratified is just the process of layering of the earth or minerals that make it up.
hope this helps
The Shale is not a metamorphic rock it is a sedimentary rock.
This is Shale, a Sedimentary rock.
shale is a sedimentary rock
Shale is clastic sedimentary rock.
Shale is clastic sedimentary rock.
Shale is a sedimentary rock.
Shale is a clastic sedimentary rock
Shale is a sedimentary rock formed from the compaction of fine-grained sediment such as mud or clay.
sedimentary
It is a sedimentary rock.
no it is a sedimentary rock
It is a Sedimentary rock