| 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
|
| Stratotypes: |
| 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. |
| Reference(s): |
| 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: |
|
E400
|
