The BGS Lexicon of Named Rock Units — Result Details

Point Of Ayre Formation

Computer Code: POA Preferred Map Code: notEntered
Status Code: Full
Age range: Holocene Epoch (QH) — Holocene Epoch (QH)
Lithological Description: Coastal marine and brackish water deposits, including shingle beach ridges, beach deposits, blown sand dunes (Ayre Member), diatomite, fen-peat, lagoonal and lake mud (brackish and fresh water) (Lough Cranstall Member) and submerged forest peat, laminated silt and palaeosols (Phurt Member).
Definition of Lower Boundary: Generally unconformably overlying glacigenic diamicton or sand and gravel, or Lateglacial sediments (head gravels or humic sands, silts and clays), or bedrock.
Definition of Upper Boundary: Usually the ground surface.
Thickness: Unrecorded but probably commonly exceeds 5m locally.
Geographical Limits: Applies to all onshore coastal/marine deposits on the Isle of Man.
Parent Unit: British Coastal Deposits Group (COAS)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  The Point of Ayre area, extending between Rue Point, Point of Ayre and Cranstal, northern tip of the Isle of Man. Chadwick, R A, et al. 2001. 
Thomas, G S P. 1999. Northern England. 91-98 in Bowen, D Q (Editor), A revised correlation of Quaternary and Neogene deposits in the British Isles. Geological Society Special Report No.23. 
Chadwick, R A, Jackson, D I, Barnes, R P, Kimbell, G S, Johnson, H, Chiverell, R C, Thomas, G S P, Jones, N S, Riley, N J, Pickett, E A, Young, B, Holliday, D W, Ball, D F, Molyneux, S G, Long, D, Power, G M and Roberts, D H. 2001. Geology of the Isle of Man and its offshore area. British Geological Survey Research Report, RR/01/06. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: