The BGS Lexicon of Named Rock Units — Result Details
Till
| Computer Code: | TILL | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Pleistocene Epoch (QP) — Pleistocene Epoch (QP) | ||
| Lithological Description: | Till is unsorted and unstratified drift, generally overconsolidated, deposited directly by and underneath a glacier without subsequent reworking by water from the glacier. It consists of a heterogenous mixture of clay, sand, gravel, and boulders varying widely in size and shape (diamicton). Synonym: boulder clay. Obsolete: pinnel. | ||
| 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: | Glacigenic deposits (GLACI) | ||
| Previous Name(s): | Glacial till [Obsolete Name and Code: Use TILL]
(-4224)
Boulder clay [Obsolete Name and Code: Use TILL] (BOC) Glacial till [Obsolete Name and Code: Use TILL] (-4224) |
||
| 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 E237 E021 S095 S094 S094 S021 E014 E015 S013 S031 S031 E130 E203 E078 E070 E077 E181 E022 E024 E028 E048 E007 S017 S023 S024 S024 S025 S026 E219 E003 S033 S032 S032 S036 S040 S034 E059 S028 S028 S049 S055 S055 S056 S056 S084 S030 S030 S038 S039 S039 S041 S071 S076 S080 S080 S043 S044 S044 S043 S083 S083 S084 S092 S097 S101 S053 S103 S103 S109 S109 S110 S116 S116 S117 S117 S119 S119 S120 S052 S052 S121 S122 S130 S131 E246 E096 E039 E171 N28 | |||