Shale can metamorphose into slate, which can metamorphose into phyllite, which can metamorphose into schist, which can metamorphose into gneiss.
Gneiss is the metamorphosed type of granite.
shale
Sedimentary rock such as shale or limestone
== Shale is a sedimentary rock, comprised of lithified mud and clay minerals.
shale is
A metamorphic rock.
shale or mudstone
If the mud has lithified into shale or mudstone, then metamorphosed, the answer would be slate.
shale
Serpentine is a type of metamorphosed sedimentary rock.
Gneiss is the metamorphosed type of granite.
shale
Shale
sedimentary
Shale is a type of rock. A piece of shale is normally flat and thin like a small chalkboard.
the type of rock made mostly from clay is the shale rock
Sedimentary rock such as shale or limestone