Some last glaciation drift deposits near Pontypridd, South Wales

Harris, Charles; Wright, M. D.

doi:10.1002/gj.3350150104

Cited by 18 publications

(3 citation statements)

References 7 publications

(2 reference statements)

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“…This is similar to the periglacial hypothesis but argues that the landforms are the result of solifluction operating on glacial and periglacial drifts following glaciation largely during the periglacial episodes of the Younger Dryas (Loch Lomond) Stadial and follows from research by authors such as Potts (1971) and Harris and Wright (1980) in Wales who identified glacially modified clasts within the deposits. This hypothesis was developed in the Cheviot Hills by Douglas and Harrison (1985;1987).…”

Section: The Younger Dryas (Loch Lomond Stadial) Solifluction Hypothesissupporting

confidence: 69%

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Late Quaternary solifluction sheets in the British uplands

Harrison

Hughes

Glasser

et al. 2021

J Quaternary Science

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Solifluction sheets are large‐scale and extensive valley‐floor and valley‐side landforms developed widely in the British Isles from mass‐wasting of glacial and periglacial sediments during late‐glacial times. We describe their geographical distribution and review the processes that have led to their development. We use data from the Cheviot Hills, the one site in the British Isles where sedimentology and optically stimulated luminescence dating have been combined, to assess their age and nature of deposition. We also present data from central Wales where a new mapping and resistivity survey has reconstructed the nature of valley‐side solifluction sheets. We explore the relative lack of recent research on these landforms and argue that solifluction sheets represent a clear example of how upland geomorphological systems have responded to late‐glacial climate change. We end by identifying a number of areas where research on these enigmatic features could be focussed, including better understanding of their distribution, sedimentology and age.

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Section: The Younger Dryas (Loch Lomond Stadial) Solifluction Hypothesissupporting

confidence: 69%

“…The processes responsible for their emplacement has been discussed in a number of publications (e.g. Harris and Wright, 1980; Harrison, 1996; Harris, 1998).…”

Section: Introductionmentioning

confidence: 99%

Late Quaternary solifluction sheets in the British uplands

Harrison

Hughes

Glasser

et al. 2021

J Quaternary Science

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“…The stratigraphy and sedimentology of the tills at Llanilid were used by Donnelly (1988) and Harris and Donnelly (1991) to verify their Late Devensian age compared to apparently older tills in the Vale of Glamorgan. A similar study proposed a Late Devensian age for tills at Pontypridd (Harris and Wright, 1980).…”

Section: South Walesmentioning

confidence: 71%

The last British Ice Sheet: A review of the evidence utilised in the compilation of the Glacial Map of Britain

Evans

Clark

Mitchell

2005

Earth-Science Reviews

127

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This paper reviews the evidence presently available (as at December 2003) in an effort to stimulate further research on the last British Ice Sheet and promote a reconstruction of ice sheet behaviour based on glacial geology and geomorphology. The wide range of evidence that has been scrutinized for inclusion on the glacial map is assessed with respect to the variability of its quality and quantity and the existing controversies in ice sheet reconstructions. Landforms interpreted as being of unequivocal ice-marginal origin (moraines, ice-contact glacifluvial landforms and lateral meltwater channels) and till sheet margins are used in conjunction with available chronological control to locate former glacier and ice-sheet margins throughout the last glacial cycle. Subglacial landforms (drumlins, flutings and eskers) have been used to demarcate former flow patterns within the ice sheet. The compilation of evidence in a regional map is crucial to any future reconstructions of palaeo-ice sheet dynamics and will provide a clearer understanding of ice sheet configuration, ice divide migration and ice thickness and coverage for the British Ice Sheet as it evolved through the last glacial cycle.2

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The sedimentology, stratigraphy and14C dating of a turf-banked solifluction lobe: evidence for Holocene slope instability at Okstindan, northern Norway

Elliott

Worsley

1999

J. Quaternary Sci.

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The stratigraphy of a trench excavated through a solifluction lobe lying at an altitude of 860 m a.s.l. on the eastern flank of the Okstindan mountains is described. Sedimentological evidence suggests that the movement was probably dominated by a flow process, with silty sands episodically bursting‐out through a thinly vegetated lobe front in the spring and early summer thaw phases, when pore‐water pressures were likely to be increased. A continuous buried soil extends for some 14 m. Fourteen new radiocarbon age estimates from thin‐slice samples of this buried soil and organic fractions derived from laboratory pre‐treatment procedures are discussed. These data indicate that the solifluction probably commenced in the mid‐Holocene and continued throughout the Neoglacial. The slope instability may be correlated tentatively with the record of glacial variations, shifts in tree lines and archaeological evidence, supporting a link with regional climatic deterioration. Copyright © 1999 John Wiley & Sons, Ltd.

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Some last glaciation drift deposits near Pontypridd, South Wales

Cited by 18 publications

References 7 publications

Late Quaternary solifluction sheets in the British uplands

Late Quaternary solifluction sheets in the British uplands

The last British Ice Sheet: A review of the evidence utilised in the compilation of the Glacial Map of Britain

The sedimentology, stratigraphy and14C dating of a turf-banked solifluction lobe: evidence for Holocene slope instability at Okstindan, northern Norway

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