Computer Code: |
PLSG |
Preferred Map Code: |
PSG |
Status Code: |
Full |
Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
Lithological Description: |
Sand and gravel, typically reddish brown and silty, containing clasts of red sandstone, greywacke sandstone and siltstone, and grey granodiorite. |
Definition of Lower Boundary: |
Erosional contact with the underlying Chapelknowe Till Member of the Gretna Till Formation. |
Definition of Upper Boundary: |
Commonly a gradational, glacitectonic contact with overlying Plumpe Bridge Till Member of the Gretna Till Formation. |
Thickness: |
15m |
Geographical Limits: |
Solway Lowlands. |
Parent Unit: |
Irish Sea Coast Glacigenic Subgroup (ISCG)
|
Previous Name(s): |
Middle Sands and Gravels [Obsolete Name and Code: Use GFSA, SEAG, CGWD, LOGG, PLSG, PFS, EVSI, THBG, EVSG]
(-122)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Partial Type Section |
River cliff of the Logan Burn, 1.5km south of Chapelknowe, Dumfries-shire. Geologists' field locality card ME 300 |
Partial Type Section |
Section behind cowshed at Plumpe Farm, 1km east of Gretna, Dumfries-shire. Geologists' field locality ME 262-263 |
Reference(s): |
Trotter, F M, 1922. Report from the Cumberland District. In: Summary of the Progress of the Geological Survey of Great Britain for 1921, 46-48. |
Trotter, F M, 1923. Report from the Cumberland District. In: Summary of Progress of the Geological Survey of Great Britain for 1922, 61-63. |
Trotter, F M and Hollingworth, S E, 1932. The glacial sequence in the North of England. Geological Magazine, Vol.69, 374-380. |
McMillan, A A, Merritt, J W, Auton, C A and Golledge, N R [In preparation]. The Quaternary geology of the Solway area. BGS Research Report. |
Trotter, F M. 1929. The glaciation of the Eastern Edenside, the Alston Block, and the Carlisle Plain. Quarterly Journal of the Geological Society of London, Vol.85, 549-612. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E011
S006
|