The BGS Lexicon of Named Rock Units — Result Details

Peldar Dacite Breccia

Computer Code: PLD Preferred Map Code: PDB
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Breccia consisting of enclaves of fine-grained, porphyritic dacite and green-grey microdiorite, in black medium-grained crystal-vitric matrix: locally rafts of volcaniclastic siltstone.
Definition of Lower Boundary: All exposed boundaries are faulted.
Definition of Upper Boundary: All exposed boundaries are faulted.
Thickness: 0-650m
Geographical Limits: Extends from Whitwick Quarry northwards and is last seen in the railway cutting north-west of Whitwick Church. Occurs again in Bardon Quarry, to the south.
Parent Unit: Whitwick Volcanic Complex (WVO)
Previous Name(s): Peldar-Type Porphyroid (-1120)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Bardon Quarry. 
Type Area  Whitwick Quarry. 
Reference(s):
Carney, J N, 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. 
Watts, W W, 1947. Geology of the ancient rocks of Charnwood Forest, Leicestershire. Leicester: Leicester Literary and Philosophical Society. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E155 E141