Constraints on the preservation of diamict facies (melt-out tills) at the margins of stagnant glaciers

Paul, Michael A.; Eyles, Nicholas

doi:10.1016/0277-3791(90)90004-t

Cited by 99 publications

(55 citation statements)

References 53 publications

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“…This is consistent with evidence from other ice-marginal systems where sediments are brought to a higher level by ice-marginal thrusting (Johnson et al, 1995). The presence of dmeltout tillT released from stagnant ice (Paul and Eyles, 1990) may therefore be an uncommon glacial product only characteristic of areas where ice has undergone compressive flow prior to stagnation (Andersson, 1998). Absence of meltout till across much of north-central Ireland, and evidence for wholesale stagnation of clean basal ice , may suggest that ice disintegrated when the ice sheet surface fell below the equilibrium line altitude rather than following a period of ice activity (Knight, 2003c).…”

Section: Conclusion and Wider Implicationssupporting

confidence: 88%

Geomorphic evidence for active and inactive phases of Late Devensian ice in north-central Ireland

Knight

2006

Geomorphology

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Section: Conclusion and Wider Implicationssupporting

confidence: 88%

Geomorphic evidence for active and inactive phases of Late Devensian ice in north-central Ireland

Knight

2006

Geomorphology

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“…Similar sediments have been described from elsewhere that contain this admixture of massive tills and sorted units possibly indicative of the melt-out (Boulton, 1970;Haldorsen and Shaw, 1982;Paul and Eyles, 1990;Piotrowski, 1992). Recently, it has become apparent that certain glacigenic sediments that have been described as melt-out tills, may better be described as mélange sediments (cf.…”

Section: The Internal Architecture Of Tillsmentioning

confidence: 56%

Till—as a glacial “tectomict”, its internal architecture, and the development of a “typing” method for till differentiation

2006

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“…Ryder, 1971;Church and Ryder, 1972;Paul and Eyles, 1990;Zielinski and van Loon, 1996;Ballantyne, 2002a,b). Large quantities of meltwater were released that saturated sediments previously deposited on the Rotherslade valley slopes.…”

Section: The New Interpretation Of the Rotherslade Sequencementioning

confidence: 99%

Reinterpreting Rotherslade, Gower Peninsula: implications for Last Glacial ice limits and Quaternary stratigraphy of the British Isles

Hiemstra

Rijsdijk

Shakesby

et al. 2009

J Quaternary Science

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Rotherslade on the Gower Peninsula in south Wales has been viewed as a key site for the reconstruction of Quaternary depositional environments in the British Isles. Since the early 20th century, and certainly since the 1980s, the accepted view has been that Rotherslade is the most westerly location on the south Gower coast where there is in situ basal till exposed and that, logically, this location marks the position of the LGM ice limit. However, reinvestigation of the sediments and their architecture, and analysis of clast fabrics and thin sections of critical sedimentary units, show that none of the exposed sediments has properties diagnostic of subglacial deposition or deformation. We postulate here that LGM ice terminated at the western side of Swansea Bay, a few kilometres to the north-east of Rotherslade, and propose that the sedimentary sequence comprises Early to Middle Devensian periglacial sediments, overlain by a complex of Late Devensian, ice-proximal outwash fan deposits, an assemblage of paraglacial debris and, finally, periglacial mass movement deposits. The proposed repositioning of the Late Devensian ice limit and the associated new subaerial interpretation of the sediments suggest that a reassessment of sedimentary sequences (Hunts Bay, Western Slade) and landforms (Paviland Moraine) farther west on Gower, which have attained similar stratigraphical status, is now warranted.

show abstract

Constraints on the preservation of diamict facies (melt-out tills) at the margins of stagnant glaciers

Cited by 99 publications

References 53 publications

Geomorphic evidence for active and inactive phases of Late Devensian ice in north-central Ireland

Geomorphic evidence for active and inactive phases of Late Devensian ice in north-central Ireland

Till—as a glacial “tectomict”, its internal architecture, and the development of a “typing” method for till differentiation

Reinterpreting Rotherslade, Gower Peninsula: implications for Last Glacial ice limits and Quaternary stratigraphy of the British Isles

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