The BGS Lexicon of Named Rock Units — Result Details
Esker deposits
| Computer Code: | EK | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Pleistocene Epoch (QP) — Pleistocene Epoch (QP) | ||
| Lithological Description: | Esker deposits are long, low, narrow, sinuous, steep-sided ridges or mounds composed of irregularly stratified sand and gravel deposited by subglacial or englacial streams flowing between ice walls of a glacier. In Britain, esker ridges range in length from less than a kilometre tens of kilometres, and in height from about 5 to 20 m. | ||
| 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: | Glaciofluvial ice contact deposits (GFIC) | ||
| Previous Name(s): | Esker [Obsolete Name and Code: Use EK]
(-1092)
Esker [Obsolete Name and Code: Use EK] (-1092) |
||
| 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: | |||
| none recorded or not applicable | |||