The geology of Anglesey, North Wales : project scoping study

This report is the published product of a study by the British Geological Survey (BGS) to describe the geology and history of geological research on Anglesey, North Wales. The geology of this island, which ranges from Neoproterozoic to Pleistocene in age, is highly complex and has been the focus of scientific research since the 19th Century. However, a number of key scientific questions remain unanswered. A multidisciplinary Anglesey project is proposed to investigate the geological evolution of this island and will examine: (1) the tectonic drivers and processes responsible for the assembly of Anglesey from the late Neoproterozoic through the Lower Palaeozoic (Cambro-Ordovician); (2) the sedimentology and stratigraphy of the Ordovician and Silurian sequences on Anglesey and their relationships to the Lower Palaeozoic succession of mainland Wales; (3) Devonian and Carboniferous basin evolution on Anglesey and its relationships to the Upper Palaeozoic succession of mainland north-west Wales; and (4) the subsequent, glacial history of Anglesey with particular reference to the control of bedrock geology on temporal and spatial changes in subglacial processes and landform development beneath Irish Sea ice stream during the Late Devensian.