Palaeocurrent Directions in the Upper Cambrian of North Wales

Abstract

RECENTLY, Evans, Garrett and Whitaker¹ recorded some palaeocurrent measurements from the Maentwrog and Ffestiniog beds of North Wales. They suggest that their measurements show that currents came generally from the south-south-west during Maentwrog and Ffestiniog times. The authors make no acknowledgment of the work of Kopstein², who reached the same conclusion using, in part, the same criteria and localities (op. cit., p. 81, and appendix 3). I have made a detailed investigation of the palaeogeography of these and other Cambrian sediments in North and South Wales³ and have recorded the presence of palaeocurrents from the southwesterly quadrant from widespread localities in the Upper Cambrian rocks of North Wales^4,5.