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
|
Stratotypes: |
Partial Type Section |
Morley Quarry borehole core from 541m to total depth at 835m. |
Reference(s): |
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 |