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Quarterly Journal of the Geological Society, 114, 478-482, 1 November 1958, https://doi.org/10.1144/gsjgs.114.1.0478
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Abstract

Dr. S. H. Straw said that the 6500 feet or so of Ludlovian deposits in the area formed the thickest development of these rocks so far recorded in Wales. Over half of this thickness was made up of the Bailey Hill Beds which, with their innumerable gritty bands, were a repetition of the Denbighshire Grit facies of North Wales. They extended southwards for some miles along the western side of Radnor Forest, but farther to the south and east the gritty bands died out and at Builth the corresponding eds were represented by sandy shales. Recent work by Cummins (1957 Geol. Mag94, 433–51) seemed to indicate that the Denbighshire Grits were derived from a south-westerly source. Had the author any evidence as to the direction from which the Bailey Hill Beds had been derived ?

The scarcity of fossils in some parts of the succession made close correlation with all but the adjacent area of Clun Forest difficult and uncertain ; but the speaker hoped that the author would extend his investigations into the areas to the east and south-east with a view to linking up, eventually, his succession with those at Ludlow on the one hand and Builth on the other.

Dr. J. D. Lawson said that successions in the basin facies were now established at Builth, Clun Forest, the Brecon anticlinal and Knighton; with Llandovery and Bishops Castle soon to come. All these areas had their own classifications based on fossil, lithological or locality names. A

pattern

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Quarterly Journal of the Geological Society: 114 (1-4)
Quarterly Journal of the Geological Society
Volume 114, Issue 1-4
November 1958
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Quarterly Journal of the Geological Society, 114, 478-482, 1 November 1958, https://doi.org/10.1144/gsjgs.114.1.0478

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