The BGS Lexicon of Named Rock Units — Result Details

Bodmin Intrusion

Computer Code: BIIN Preferred Map Code: notEntered
Status Code: Full, pending ratification
Age range: Cisuralian Epoch (PLC) — Cisuralian Epoch (PLC)
Lithological Description: Pluton comprising granite and microgranite. Generally coarse-grained and megacrystic with grain size averaging 2-3 mm. It has a typically inequigranular, hypidiomorphic, granitic texture and is grey when fresh, becoming buff when weathered.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: Bodmin Moor, Cornwall.
Parent Unit: Not Available (!)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Centred on Bodmin Moor and extending around 190 sq km, Selwood et al., 1998. 
Reference(s):
Selwood, E B, Thomas, J M, Williams, B J, Clayton, R, Durning, B, Smith, O and Warr, L N, 1998. Geology of the country around Trevose Head and Camelford. Memoir of the British Geological Survey, sheets 335 and 336 (England and Wales). 
Darbyshire, D P F and Sheppard, T J. 1985. Chronology of granite magmatism and associated mineralisation, SW England. Journal of the Geological Society, London, 142, 1159-1177. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable