Various, Encyclopaedia Britannica, 11th Edition…
“ The history of the origin of the land-forms of England, as far as they have been deduced from geological studies, is exceedingly complicated. The fact that every known geological formation (except the Miocene) is represented, proves of itself how long the history has been, and how multifarious the changes. It must suffice to say that the separation of Ireland from England was a comparatively recent episode, while the severance of the land-connexion between England and the continent by the formation of the Strait of Dover is still more recent and probably occurred with the human period. ”
