4 - Trearddur to Holyhead
Porth y Gwin - Schists
A closer view of the Rocks in Porth y Gwin
The Schists vary in colour from Silvery to Brownish ,heavily fracture and folded.
Schist is a hard metamorphic rock , formed by the metamorphosis of mudstone /shale/...
that shows schistosity - the tendency to split into layers.
Ref: NW 1943
Date: 07/04/2023
Location: SH 2115 7980
