Foundations of Mendip (British Geological Survey) – Rocks of the Mendips
Information on the many types of rocks that make up the Mendip Hills.
Silurian
Foundations of Mendip (British Geological Survey) – Geological Timescale
A timechart setting out the geological timescale by period, era and eon.
Themes
Foundations of Mendip (British Geological Survey) – Ancient Environments
Illustrated descriptions of the ancient environments in which the rocks of the Mendips were formed.