The BGS Lexicon of Named Rock Units — Result Details

Glaciolacustrine deposits

Computer Code: GLLD Preferred Map Code: notEntered
Status Code: Index Level
Age range: Pleistocene Epoch (QP) — Pleistocene Epoch (QP)
Lithological Description: Glaciolacustrine deposits were laid down in glacial lakes. Composed of coarse-grained bedload and suspended fine-grained material transported by meltwater flowing into lakes bordering the glacier. Deposits include sands, silts and clays of deltaic origin, shoreface sand and gravel and lake bottom varved, fine-grained (fine sand, silt and clay) sediments. Dropstones from floating ice are a common feature. Synonyms: glacilacustrine deposits, glacial lake deposits. Silt and clay, laminated, commonly rich in organic matter, locally with interbedded peat.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Proglacial deposits (PGDEP)
Previous Name(s): Glacial Lake Deposits (-12)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
McMillan, A A and Powell, J H. 1999. The classification of artificial (man made) ground and natural superficial deposits. British Geological Survey Research Report, RR/99/04. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E221 S015 S023 S031 S031 E130 E203 E078 E142 E024 E014 S032 S040 E141 S084 S030 S038 S076 E096 N28 E214