he geographical position of the City of Cardiff, and the geological formations, especially the superficial strata of the neighbourhood, exert of course a powerful influence upon the climate and meteorology of the district. The town lies at the mouth of three rivers, the Rhymney on the eastern boundary, the Ely on the west, and the Taff passing through the centre of the town, all three discharging their contents into the Bristol Channel. The low-lying alluvial plain, upon which part of the town is built, stretches from the western boundary along the course of the Severn to Chepstow. The lower or southern parts rest upon a stiff blue marine clay of considerable thickness near the Docks, which becomes thinner and gradually terminates about the centre of the town, the underlying gravel coming to the surface and extending in a northerly direction with varying thickness, attaining a height of about 40 feet above mean sea level in Queen Street and Newport Road, to about 90 feet in Cathays, and resting upon the New Red Marl, the Old Red Sandstone and Silurian formations cropping up on the Penvlan Hill at an elevation of about 200 feet, a range of hills about 5 miles to the north of Cardiff forming the southern edge of . . . South Wales [211].
Bibliography
Cardiff records; being materials for a history of the county borough from the earliest times by Cardiff, Wales. Records Committee.. Matthews, John Hobson, ed. 1898. Internet Archive online version of a copy in the Allen County Public Library Genealogy Center. Web. 15 November 2018.
Last modified 31 March 2022