File:EGS MOI Fig S 04.jpg

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Summary

description	{{\|1=Tectonic model for Grampian phase of the Caledonian orogeny (from Open University 2003, with acknowledgement to Woodcock&Strachan, 2000). A. A pre-Grampian stage showing the opening of the Iapetus Ocean and sedimentation of the Dalradian Supergroup on the rifted Laurentian crust. B. S-directed subduction formed an island arc on continental crust. C. Initial collision led to narrowing of ocean tracts, the obduction of ophiolites, and widespread deformation of the Moine and Dalradian supergroups on the Laurentian margin. D. Continued collision resulted in folding and underthrusting of the Laurentian margin, and a N-dipping subduction zone. From: Fig. S.4. Strachan, Rob et al. Editors. 2010. A geological excursion guide to the Moine geology of the Northern Highlands of Scotland. Edinburgh: Geological Society of Edinburgh and Geological Society of Glasgow}}
source	Edinburgh Geological Society
author	Edinburgh Geological Society

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