The BGS Lexicon of Named Rock Units — Result Details

Landlake Limestone Member

Computer Code: LLKL Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Famennian Age (DA) — Tournaisian Stage (CT)
Lithological Description: Greenish grey slate with thin bioclastic limestone beds.
Definition of Lower Boundary: Thrust fault
Definition of Upper Boundary: Thrust fault
Thickness: Not known.
Geographical Limits: Polyphant-South Petherwin area.
Parent Unit: Petherwin Formation (PWB)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Sporadic outcrops in the vicinity of and between Polyphant and South Petherwin. 
Reference(s):
British Geological Survey, 1993. Tavistock. England and Wales Sheet 337. Solid and Drift 1:50 000 Provisional Series (Keyworth, Nottingham: British Geological Survey). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable