The BGS Lexicon of Named Rock Units — Result Details
Raised Tidal Flat Deposits Of Holocene Age
| Computer Code: | RTFDF | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Index Level | ||
| Age range: | Holocene Epoch (QH) — Holocene Epoch (QH) | ||
| Lithological Description: | Silt, clay and fine-grained sand with lenses of gravel. | ||
| Definition of Lower Boundary: | Sharp, unconformable, generally planar contact on various older superficial deposits, most commonly till. | ||
| Definition of Upper Boundary: | Ground surface, or sharp, undulating, conformable contact with younger superficial deposits, including peat and blown sand. | ||
| Thickness: | To 20m | ||
| Geographical Limits: | Britain to the north of the Humber-Ribble. | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Raised marine/beach/estuarine deposits of postglacial age [Obsolete Name and Code: Use RTFDF]
(-1152)
Raised Tidal Flat Deposits Of Flandrian Age (-5250) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | The southern shore of the Inverness Firth, 2 to 18km northeast of Inverness. Fletcher et al., 1996. | ||
| Reference(s): | |||
| Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S084 | |||