Geomorphic evidence of Younger Dryas glaciation in the Macgillycuddy's Reeks, south west Ireland

E Anderson, S Harrison, D G Passmore, Timothy Michael Mighall

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Geomorphological mapping in the Macgillycuddy's Reeks, south west Ireland, has revealed evidence for a phase of local glaciation following the retreat of the Glenavy Stadial glacial ice, On the basis of contrasting geomorphic evidence within and outside the limits of local glaciation it is considered that this glacial phase was triggered by Younger Dryas climatic cooling. This evidence can be summarised as follows: (1)Schmidt Hammer rebound Values (R-value) demonstrate that the surface strength of glacially moulded in situ rock within the glacial limits is higher than equivalent bedrock exposures outside, indicating that R-value contrasts can only be attributed to temporal weathering differences; (2) Periglacial features are absent or poorly developed within the glacial limits, but are well developed outside. Reconstruction of the former glacial extent revealed six small high level cirque glaciers, with a total surface area of 1.4 km(2) and a mean equilibriun line altitude of 700 m.

Original languageEnglish
Pages (from-to)75-90
Number of pages16
JournalJournal of Quaternary Science
Volume13
Issue number6
Publication statusPublished - 1998

Keywords

  • Ireland
  • Younger Dryas
  • local glaciation moraine assemblages
  • chronology
  • glacier reconstruction
  • SCHMIDT HAMMER
  • PROTALUS RAMPARTS
  • ROCK
  • SCOTLAND
  • MOUNTAIN
  • NORWAY
  • AGE
  • ENVIRONMENT
  • VEGETATION
  • GLACIERS

Cite this

Geomorphic evidence of Younger Dryas glaciation in the Macgillycuddy's Reeks, south west Ireland. / Anderson, E ; Harrison, S ; Passmore, D G ; Mighall, Timothy Michael.

In: Journal of Quaternary Science, Vol. 13, No. 6, 1998, p. 75-90.

Research output: Contribution to journalArticle

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abstract = "Geomorphological mapping in the Macgillycuddy's Reeks, south west Ireland, has revealed evidence for a phase of local glaciation following the retreat of the Glenavy Stadial glacial ice, On the basis of contrasting geomorphic evidence within and outside the limits of local glaciation it is considered that this glacial phase was triggered by Younger Dryas climatic cooling. This evidence can be summarised as follows: (1)Schmidt Hammer rebound Values (R-value) demonstrate that the surface strength of glacially moulded in situ rock within the glacial limits is higher than equivalent bedrock exposures outside, indicating that R-value contrasts can only be attributed to temporal weathering differences; (2) Periglacial features are absent or poorly developed within the glacial limits, but are well developed outside. Reconstruction of the former glacial extent revealed six small high level cirque glaciers, with a total surface area of 1.4 km(2) and a mean equilibriun line altitude of 700 m.",
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AU - Harrison, S

AU - Passmore, D G

AU - Mighall, Timothy Michael

PY - 1998

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N2 - Geomorphological mapping in the Macgillycuddy's Reeks, south west Ireland, has revealed evidence for a phase of local glaciation following the retreat of the Glenavy Stadial glacial ice, On the basis of contrasting geomorphic evidence within and outside the limits of local glaciation it is considered that this glacial phase was triggered by Younger Dryas climatic cooling. This evidence can be summarised as follows: (1)Schmidt Hammer rebound Values (R-value) demonstrate that the surface strength of glacially moulded in situ rock within the glacial limits is higher than equivalent bedrock exposures outside, indicating that R-value contrasts can only be attributed to temporal weathering differences; (2) Periglacial features are absent or poorly developed within the glacial limits, but are well developed outside. Reconstruction of the former glacial extent revealed six small high level cirque glaciers, with a total surface area of 1.4 km(2) and a mean equilibriun line altitude of 700 m.

AB - Geomorphological mapping in the Macgillycuddy's Reeks, south west Ireland, has revealed evidence for a phase of local glaciation following the retreat of the Glenavy Stadial glacial ice, On the basis of contrasting geomorphic evidence within and outside the limits of local glaciation it is considered that this glacial phase was triggered by Younger Dryas climatic cooling. This evidence can be summarised as follows: (1)Schmidt Hammer rebound Values (R-value) demonstrate that the surface strength of glacially moulded in situ rock within the glacial limits is higher than equivalent bedrock exposures outside, indicating that R-value contrasts can only be attributed to temporal weathering differences; (2) Periglacial features are absent or poorly developed within the glacial limits, but are well developed outside. Reconstruction of the former glacial extent revealed six small high level cirque glaciers, with a total surface area of 1.4 km(2) and a mean equilibriun line altitude of 700 m.

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KW - chronology

KW - glacier reconstruction

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KW - PROTALUS RAMPARTS

KW - ROCK

KW - SCOTLAND

KW - MOUNTAIN

KW - NORWAY

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KW - ENVIRONMENT

KW - VEGETATION

KW - GLACIERS

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