Palaeoglaciology of the Welsh sector of the British–Irish Ice Sheet

Krister N. Jansson, Neil F. Glasser

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

40 Dyfyniadau(SciVal)

Crynodeb

This palaeoglaciological reconstruction, based on the distribution of glacial lineations interpreted from satellite imagery, considers the extent, thickness and dynamics of the Welsh Ice Cap and its interaction with the British–Irish Ice Sheet. Two major ice-flow events were identified. The oldest phase of ice flow (Event I) is characterized by ice flowing from an ice dispersal centre situated over the higher terrain in north– central Wales and by ice thick enough to cover the mountain summits. At this time the interior of the ice cap is inferred to have been dominated by cold-based ice. During the growth of the Welsh Ice Cap it became confluent with the British–Irish Ice Sheet. The Welsh Ice Cap at this time was again sufficiently thick to submerge the highest mountain summits. The youngest detected phase of ice flow (Event II) was marked by an abrupt change in the dynamics of the Welsh Ice Cap. During Event II the Welsh Ice Cap was drained by at least four ice streams, which followed major troughs in northern and eastern Wales.
Iaith wreiddiolSaesneg
Tudalennau (o-i)25-37
Nifer y tudalennau13
CyfnodolynJournal of the Geological Society
Cyfrol162
Rhif cyhoeddi1
StatwsCyhoeddwyd - 2005

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'Palaeoglaciology of the Welsh sector of the British–Irish Ice Sheet'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

Dyfynnu hyn