This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The Quarterly journal of the Geological Society of London . of these beds stating that after careful comparison of the Sharpley rock that of the base ment beds of Eatchet Hill and the rock of Peldar Tor we consider them the equivalents one of another We have subsequently ex amined more minutely the whole district with the following