Results of a Systematic Survey, in 1878, of the Directions and Limits of Dispersion, Mode of Occurrence, and Relation to Drift-deposits of the Erratic Blocks or Boulders of the West of England and East of Wales, including a Revision of many Year's previous Obersvations

Abstract

[Though long familiar with the erratic blocks or (as they are now more generally called) boulders of the west of England, and though I had written many papers on the subject, which appeared in the ‘Quart. Journ. Geol Soc.’ and ‘Geological Magazine,’ I lately saw the necessity for a systematic revision of what I had done, and more especially for an extension of my observations in a south and southeast direction, where they could be made to throw some clear light on the nature and sequence of glacial events. As no attempt has hitherto been made to treat the subject of erratics as a distinct branch of science, and as most readers might probably expect to find in a paper on the subject little more than an inventory of facts, it may be well to begin with a few remarks and definitions calculated to excite a scientific interest in the subsequent detailed statements.]

Devensian glacigenic sedimentation and landscape evolution in the Cardigan area of southwest Wales

“…Most authors developed the concept of a major ice mass flowing south through the Irish Sea, and envisaged deposition on land (e.g. Morton, 1860;Tiddeman, 1872;Mackintosh, 1879;Jehu, 1904Jehu, , 1909Williams, 1927;Synge, 1964;Saunders, 1968;Bowen, 1973a,b). Extensive drift deposits in this region, well exposed at coastal sites, provided evidence for what is now regarded as terrestrial glaciation belonging to the Late Devensian stage.…”

Glacial meltwater erosion of the Mid-Cheshire Ridge: implications for ice dynamics during the Late Devensian glaciation of northwest England

“…The form of the Wrexham-Ellesmere-Whitchurch end moraine complex indicates that the ice front was bilobate at this point, where it was divided by the Mid-Cheshire Ridge (Boulton and Worsley, 1965). Early workers recognised that the last ice sheet flowed out of the Irish Sea Basin in a NNW-SSE direction (Morton, 1860(Morton, , 1870Mackintosh, 1879) and this regional pattern of ice flow is now firmly established (Gresswell, 1964;Thomas, 1985Thomas, , 1989Glasser and Hambrey, 1998). This study area has three main advantages for studies of meltwater behaviour beneath the Late Devensian ice sheet:…”