The BGS Lexicon of Named Rock Units — Result Details
Grampound Formation
| Computer Code: | GRAD | Preferred Map Code: | Gmp |
|---|---|---|---|
| Status Code: | Pending Upgrade | ||
| Age range: | Mid Devonian Epoch (DM) — Mid Devonian Epoch (DM) | ||
| Lithological Description: | Thinly interlaminated grey slaty mudstone and mid-grey siltstone, weathering yellowish green, with sporadic thin beds of sandstone and sparse lenticular limestone. | ||
| Definition of Lower Boundary: | Faulted contact. | ||
| Definition of Upper Boundary: | Carrick Thrust (in Mevagissey map area). | ||
| Thickness: | Unknown | ||
| Geographical Limits: | At least along the northern margin of the Mevagissey (353) Sheet area and in the northeastern corner of the Falmouth (352) Sheet area. | ||
| Parent Unit: | Not Available (!) | ||
| Previous Name(s): | Grampound Grit [Obsolete Name And Code: Use TRSA Or GRAD]
(GPG)
Grampound Group [Obsolete Name and Code: Use GRAD] (-1571) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Inland exposures in the Grampound area. | ||
| Partial Type Section | Coastal section at Pentewan. | ||
| Reference(s): | |||
| none recorded or not applicable | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E353 E354 | |||