Date: Sunday, 22 September 2019 - Friday, 27 September 2019
Time: 10:00AM - 6:00PM
Type: Excursion


Field days: Monday/Tuesday/Wednesday/Thursday

Leader: Chris Arkwright.

This is a 5-night trip with 4 days in the field.

Anglesey is regarded as a "classic" area of British geology; while its oldest rocks appear to be unrelated to those of the rest of the British Isles, the remainder provide a detailed record of events which led to the formation of southern Britain. Formed between 650 and 300 Ma, they include high grade gneisses, a granite pluton, metasediments, sandstones, mudstones and the famous Anglesey Blueschists. There are also Paleogene dykes and abundant glacial features. A number of NE–SW faults slice the island into blocks; large sandstones blocks are thought by some geologists to mark the location of an ancient subduction zone. The original map was published in 1920 and BGS is currently undertaking a project of new research into the island’s geology.

Accommodation will be in B&B and means of travel has yet to be decided

The trip is now almost full; if you wish more details please email the residential excursions secretary, Maggie Donnelly, at