Category
page 1Ordovician England
Caledonian orogeny
mountain-building era

Avalonia
thumb|upright=1.35|Current extent of Avalonia highlighted in yellow
Avalonia was a microcontinent in the Paleozoic era. Crustal fragments of this former microcontinent are terranes in parts of the eastern coast of North America: Atlantic Canada, and parts of the East Coast of the United States. In addition, terranes derived from Avalonia also make up portions of Northwestern Europe, being found in England, Wales and parts of Ireland.
Stiperstones
thumb|Shattered Cambrian quartzite at the Devil's Chair, Stiperstones