Anglesey's Geosites Guide

Part of the GeoMôn Website


Index to Anglesey's Geosites

This is the index page from which you may navigate to pages giving details of some of Anglesey's geosites. They are classified according to the period of geological time they represent. Additionally, there are two separate categories of geosites where the palaeontology or mineralisation are the features of particular note. The site categories may be accessed via the menu at the top of each page. Click on a category to view a site listing, from which you may pick a particular site if you want to find out more about it.

Below, you will additionally find links to downloadable and printable PDF files listing and briefly summarising the geosites of Anglesey, arranged by category.

Please note that the inclusion of sites in these listings in no way allows access to the sites described. The information is merely a scientific description. Many of the sites are Sites of Special Scientific Interest (SSSI), and/or on private land where permission to visit could be denied, or the site is unsuitable for safety or other reasons. Access to any site which is not in the public domain is entirely at the discretion of site owners. In no case is the collection and removal of specimens allowed from any site. Bona fide researchers require a permit from CCW to collect any specimens from GCR sites (SSSI) and these are generally allowed only under supervision. Queries regarding any of these sites should be directed to COFNOD, Parc Menai, Bangor. They will be able to answer any queries in the near future when all the relevant information is in their hands.

PDF listings - you need Adobe Acrobat Reader. Most people have it but if not it can be downloaded from Adobe's website - click HERE.

Listings Menu:

(handy tip: it is recommended that you right-click your mouse on any link and choose "open in new window" from the options that you see)

Introduction to the RIGS Network in Anglesey
Precambrian sites - stratigraphy
Precambrian sites - structural
Lower Palaeozoic sites
Upper Palaeozoic sites
Igneous sites
Quaternary sites
Soil science sites
Historic geology sites




Above: Porth Trefadog - a Precambrian Geosite. Photo: Stewart Campbell.