The BGS Lexicon of Named Rock Units — Result Details

Ayre Formation

Computer Code: AYRE Preferred Map Code: notEntered
Status Code: Full
Age range: Ipswichian Stage (QI) — Ipswichian Stage (QI)
Lithological Description: Shelly silts and sands with a marine fauna (known only from boreholes).
Definition of Lower Boundary: Overlies sand, gravel and diamicton of the Ayre Lighthouse Formation.
Definition of Upper Boundary: Base of sand and gravel of the overlying Kiondroughad Formation.
Thickness: 8m at its type section.
Geographical Limits: Northern part of the Isle of Man (50k sheets 36 and possibly 46).
Parent Unit: British Coastal Deposits Group (COAS)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  65-73m below OD in Borehole IV, Point of Ayre, Isle of Man. 
Reference(s):
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable