Abstract
RECENTLY a hypothesis on the age of the main orogenic deformation of the Dalradian rocks of Britain proposed by Fitch, Miller and Brown1 was criticized on stratigraphic grounds by T. G. Miller2. I find myself in agreement with the essentials (though not the whole) of Miller's argument against a Pre-Cambrian age for the main orogenic deformation of the Dalradian rocks, and feel that some further points should be made on this aspect of the ‘working hypothesis’ of Fitch, Miller and Brown. A fuller account of my views on the geographical and time relationships of the ‘early Caledonian’ and ‘late Caledonian’ orogenies of Britain is being prepared to amplify the conclusions briefly indicated in the introduction of an earlier work3, but it would appear pertinent to raise briefly some of the relevant points now.
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TREMLETT, W. Age of the Caledonian Orogeny and Metamorphism in Britain. Nature 205, 1202 (1965). https://doi.org/10.1038/2051202a0
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DOI: https://doi.org/10.1038/2051202a0
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