| Computer Code: |
DSG |
Preferred Map Code: |
DL |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Sand and gravel, red-brown, with clasts predominantly of Devonian sandstone, mudstone and andesite. Locally with lenses of silt and clay. |
| Definition of Lower Boundary: |
Unconformable on bedrock or conformable on Mill of Forest Till Formation or Ury Silts Formation. |
| Definition of Upper Boundary: |
Either at the ground surface or unconformably overlain by Flandrian deposits. |
| Thickness: |
Very variable, generally 5 to 10m; more than 23m proved in boreholes. |
| Geographical Limits: |
Howe of Mearns area and flanking the coastline between Stonehaven and the mouth of the River Dee. |
| Parent Unit: |
Mearns Glacigenic Subgroup (MDR)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Kaim of Clearymuir Gravel Pit, 1.3km eastnortheast of Drumlithie Crossroads. |
| Reference Section |
British Geological Survey borehole NO77NE/1 at Causeywell Brae c 2.2km east of Auchenblae, from 0.1m to 23.5m depth in borehole. |
| Reference Section |
British Geological Survey borehole NO78SE/4, at Orchard Hill, Drumlithie, from 0.3m to 3.4m depth in borehole. |
| 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) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S066
S067
S056
S066
S077
|
