The BGS Lexicon of Named Rock Units — Result Details

Ayre Lighthouse Formation

Computer Code: AYRL Preferred Map Code: notEntered
Status Code: Full
Age range: Hoxnian Stage (QX) — Hoxnian Stage (QX)
Lithological Description: Sand, gravel and diamicton of northern origin that rests on Permo-Triassic bedrock (known only from boreholes).
Definition of Lower Boundary: Unconformably overlies Permo-Triassic bedrock.
Definition of Upper Boundary: Base of the shelly silts and sands of the overlying Ayre Formation.
Thickness: c.70m at its type section.
Geographical Limits: Northern part of the Isle of Man (50k sheets 36 and possibly 46)
Parent Unit: Irish Sea Coast (Albion) Glacigenic Subgroup (ISCAG)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  c 73 to 140m below OD on Borehole IV, Point of Ayre, Isle of Man. 
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