| Computer Code: |
KDRD |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Mid Pleistocene (QPM)
— Late Pleistocene (QPL) |
| Lithological Description: |
Sand, gravel and diamicton (till) of lithologies derived from the north of the Isle of Man (Chadwick et al., 2001). |
| Definition of Lower Boundary: |
Unconformably overlies a bedrock platform at between 41 and 53 m below OD and partly overlies the Ayre Formation. At the type section of the Kiondroughad Formation, it overlies coarse grained gravel and clay of the Ayre Formation. |
| Definition of Upper Boundary: |
Base of the Shellag Formation. At the type section of the Kiondroughad Formation, the base of the Shellag Formation comprises a clayey diamicton with cobbles. |
| Thickness: |
About 60 m at its type section. |
| Geographical Limits: |
Isle of Man (50k Sheets E36, 45, 46, and 56). |
| 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: |
| Reference Section |
Borehole 16, Kiondroughad, northwest side of the Isle of Man. Chadwick 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. |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
