| Computer Code: |
BLYP |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Compressed, humified peat and weakly organic silty sand. The Berryley Peat Bed has yielded 'infinite' radiocarbon ages (SRR-3724) of 39,59006 +/- 550 for the humic fraction and 34,600 +/- 910 for the humin fraction (Whittington et al, 1993) and luminescence ages of 160 +/- 16 and 251 +/- 24ka (Duller et al, 1995). Pollen analysis indicates that the peat probably formed during an Early Devensian interstadial in which birch-pine woodland first developed, probably followed by tundra vegetation in which the Balkan heath (Bruckenthalia spiculifolia) was present. |
| Definition of Lower Boundary: |
Sharp, conformable contact with mottled (weathered) top of dark grey diamicton of the Camp Fauld Till Formation, or bedrock. |
| Definition of Upper Boundary: |
Sheared glacitectonic contact with overlying greenish grey sandy diamicton of the Aldie Till Member, or sand and gravel with stringers of peat passing up into a head deposit named informally as the Hardslacks Gelifluctate Bed, in turn overlain by Aldie Till Member. |
| Thickness: |
< 0.5 m. |
| Geographical Limits: |
Moss of Cruden, Buchan |
| Parent Unit: |
Moy Burn Palaeosol Formation (MBP)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Berryley And Hardslacks Members Of Camp Fauld Formation Of Bowen (1999)
|
| Stratotypes: |
| Type Section |
The Camp Fauld Site lies on the southern slope of the Moss of Cruden, about 900 m north-west of Moreseat, Buchan. Whittington et al., 1993. |
| Reference(s): |
| Merritt, J W, Auton, C A, Connell, E R, Hall, A M and Peacock, J D. 2003. The Cainozoic geology and landscape evolution of north-east Scotland. Memoir of the British Geological Survey, Sheets 66E, 67, 76E, 77, 86E, 87W, 87E, 95, 96W, 96E and 97 (Scotland) |
| Whittington, G, Hall, A M and Jarvis, J. 1993. A pre-late Devensian pollen site from Camp Fauld, Buchan, northeast Scotland. New Phytologist, Vol.125, 867-874. |
| Duller, G A T, Wintle, A F and Hall, A M. 1995. Luminescence dating and its application to key-pre-Late Devensian sites in Scotland. Quaternary Science Reviews, Vol.14, 495-519. |
| Bowen, D Q. 1999. A revised correlation of Quaternary 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 |
