...G. M. Power; R. P. Barnes Abstract The results from exploration geochemical stream sediment surveys of the central Wales lead-zinc orefield by undergraduates from the University of Portsmouth between 1979 and 2003 are now available on open access at www.geologis.com for further investigation...

...T. D. Adams Abstract In the hydroelectric project developed on the flanks of Plynlimon, about 10 miles east of Aberystwyth, Wales, a pressure tunnel leading off from the reservoir near Ponterwyd is driven through a succession of light- and dark-colored mudstones and black shales, all of lower...

...T. D. Adams Abstract The Ponterwyd district, east of Aberystwyth, western Wales, is part of a dissected plateau modified by localized glacial deposition and subsequent fluvial erosion. In connection with the recent construction of a dam and reservoir, a survey has revealed four buried channels...

... Palaeozoic rocks in Central Wales suggest that the strata in the Wallog-Borth region are younger than those to the south. However, the overall structure of the Aberystwyth Grits is that of a periclinal syncline with those beds lying around Wallog and Borth dipping to the south. This is borne out by the fact...