The BGS Lexicon of Named Rock Units — Result Details

Morley Lane Volcanic Formation

Computer Code: MLV Preferred Map Code: MLV
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Porphyritic metadacite lavas interbedded with greenish-grey 'tuffs' that may in part represent highly sheared fault-rocks.
Definition of Lower Boundary: Not seen.
Definition of Upper Boundary: Sharply overlain by Ives Head Formation at 541m depth in Morley Quarry Borehole. Ives Head Formation basal bed, is a grey, laminated volcaniclastic siltstone/sandstone.
Thickness: Apparent thickness of 294m
Geographical Limits: Not known at outcrop.
Parent Unit: Blackbrook Group (CBK)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Partial Type Section  Morley Quarry borehole core from 541m to total depth at 835m. 
Pharaoh, T C and Evans, C J, 1987. Morley Quarry No.1 Borehole: Geological Well Completion Report. Investigation of the Geothermal Potential of the UK. British Geological Survey Report. 
Carney, J N, 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable