| 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
|
| Stratotypes: |
| Type Section |
c 73 to 140m below OD on Borehole IV, Point of Ayre, Isle of Man. Chadwick, R A, et al (2001). |
| 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 |
