The Structure and Tectonics of North-Eastern Perthshire

Matheson, Frederick John (1958) The Structure and Tectonics of North-Eastern Perthshire. PhD thesis, University of Glasgow.

Abstract

The Dalradian schists of North-eastern Perthshire range from the Blair Atholl Series to the Pitlochry Schist and contain epidiorite sills. From the "Flat Belt" to the Ben-y-Gloe Belt their structure has been interpreted by Bailey (1925) who suggested that the rocks were folded on N.E.-S.W. axes, but that folds belonging to various phases of the Caledonian orogeny could be recognised. He also invoked sliding to explain strati graphical discordances. In few-other parts of the Southern Highlands does a solution based on stratigraphie mapping present greater difficulties than in north-east Perthshire. This thesis shows that certain of these difficulties are resolved by the recognition of a complementary fold system on N.W.-S.E. axes. Evidence of this trend as well as the different types of folds on "Caledonoid" axes is given by the minor structures of the area. Several episodes of igneous activity followed the folding. The earliest was the formation of the Duchray Hill Gneiss from part of the Ben Lui Schist. This was followed by the intrusion of the Glen Shee Diorite and the Carn Mor Granodiorite. Finally the metasediments were out by suites of lamprophyre and felsite dykes.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Keywords: Geology, Plate tectonics
• Date of Award: 1958
• Depositing User: Enlighten Team
• Unique ID: glathesis:1958-79248
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 05 Mar 2020 11:24
• Last Modified: 05 Mar 2020 11:24
• URI: https://theses.gla.ac.uk/id/eprint/79248