Occurrence of Attributes in Original Text

The text related to the cultural heritage 'The Slate Landscape of Northwest Wales' has mentioned 'Geological' in the following places:
Occurrence Sentence Text Source
The slate industry in North Wales is a World Heritage Site, whilst Welsh slate has been designated by the International Union of Geological Sciences as a Global Heritage Stone Resource.
The slate deposits of Wales belong to three geological series: Cambrian, Ordovician and Silurian.