The BGS Lexicon of Named Rock Units — Result Details

Didymograptus Bifidus Beds

Computer Code: DBB Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Abereiddian Stage (O2) — Abereiddian Stage (O2)
Lithological Description: Grey silty graptolitic mudstones with thin tuffaceous horizons.
Definition of Lower Boundary: Awaits modern stratigraphical study.
Definition of Upper Boundary: Awaits modern stratigraphical study.
Thickness: Unspecified
Geographical Limits: Not specified.
Parent Unit: Not Available (!)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E245 E244 E229 E210