| Computer Code: |
PATT |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Mid Pleistocene (QPM)
— Mid Pleistocene (QPM) |
| Lithological Description: |
Gravelly sandy clay diamicton with angular to rounded clasts of micaceous psammite, grey granite, porphyry and quartzite. Pale olive brown and slightly weathered. |
| Definition of Lower Boundary: |
Unconformable, on bedrock. |
| Definition of Upper Boundary: |
Generally unconformable with the Ardverikie Till Formation, but locally conformable with overlying Linn of Pattack Silt Formation. |
| Thickness: |
Less than 4 m. |
| Geographical Limits: |
Valley of the River Pattack and around the Gaick Plateau (BGS 1:50 000 sheets S63E, S64E and S64W). |
| Parent Unit: |
Central Grampian (Albion) Glacigenic Subgroup (CGAG)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
River cliff section 350 m downstream of the confluence of the River Pattack and the Allt Coire nam Plaidean. |
| Reference Section |
River cliff section 250 to 350 m upstream of the confluence of the River Pattack and the Allt Coire nam Plaidean. |
| Reference Section |
River cliff section at the confluence of the River Pattack and the Allt Beinn Eilde. |
| Reference(s): |
| 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. |
| Merritt, J W, 1999. The Quaternary geology of the Dalwhinnie District. British Geological Survey Technical Report WA/99/14R. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S064
S064
S063
|
