The BGS Lexicon of Named Rock Units — Result Details

Shetland Ophiolite Complex

Computer Code: SHOP Preferred Map Code: symbol
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Silurian Period (S)
Lithological Description: The unit is composed of two ophiolitic nappes, the upper and lower nappes, which are separated and underlain by imbricate zones composed of metasedimentary strata, including ophiolitic erosional debris, acid and basic metavolcanic rocks, ophiolitic rocks and hornblende schist.
Definition of Lower Boundary: The base of the complex is marked by a thrust.
Definition of Upper Boundary: The top of the upper nappe is not seen.
Thickness: At least 8 km thick.
Geographical Limits: The Shetland Ophiolite covers the eastern half of Unst, and the central and eastern parts of Fetlar.
Parent Unit: Caledonian Supersuite (CIGSS)
Previous Name(s): Shetland Ophiolite Complex [Obsolete Code: Use SHOP] (SHOC)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  The Punds to Wick of Hagdale, Unst, Shetland. Flinn, 1999. 
Partial Type Section  Skeo Taing to Clugan, Unst, Shetland. Flinn, 1999. 
Reference(s):
Flinn, D. 1996. The Shetland Ophiolite Complex: field evidence for the intrusive emplacement of the 'cumulate' layers. Scottish Journal of Geology, 32 (2), 151-8. 
Flinn, D. 1999. The Shetland Ophiolite, In: Stephenson, D, Bevins, R E, Millward, D, Highton, A J, Parsons, I, Stone, P and Wadsworth, W J. (Eds), Caledonian Igneous Rocks of Great Britain, Joint Nature ConservationCommittee, pp 36-51. 
Read H H. 1934. The metamorphic history of the Unst in the Shetland Islands Quarterly Journal of the Geological Society of London, 90, 637-88. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S131