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
Type Area  Sporadic outcrops in the vicinity of and between Polyphant and South Petherwin. 
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