Dynamics and palaeoclimatic significance of a Loch Lomond Stadial glacier: Coire Ardair, Creag Meagaidh, Western Highlands, Scotland. / Jones, R. Selwyn; Lowe, Joseph; Palmer, Adrian; Eaves, Shaun ; Golledge, Nicholas.

In: Proceedings of the Geologists' Association, Vol. 128, No. 1, 01.02.2017, p. 54-66.

Research output: Contribution to journalArticle

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Abstract

The extent, basal conditions and retreat history of a Loch Lomond Stadial glacier are reconstructed based on detailed geomorphological and sedimentological assessment. We present new evidence from the vicinity of Coire Ardair that supports the former existence of a warm-based, locally-fed valley glacier, with probable cold-based ice on the surrounding plateau. This is broadly consistent with modelled creep-dominated flow in the upper catchment and sliding-dominated flow throughout much of the valley. A dense suite of moraines, primarily formed in ice-marginal environments, records a multi-phase recessional history: (1) active and oscillatory retreat; (2) a prolonged ice stillstand; (3) partial ice stagnation with occasional minor readvances; (4) increased oscillatory retreat with a substantial readvance event; and (5) rapid and uninterrupted retreat. We propose that a Coire Ardair glacier responded to sub-centennial scale climate fluctuations, possibly associated with the periodic delivery of warmer air masses to the region, rather than to a single, prominent shift in climate.
Original languageEnglish
Pages (from-to)54-66
Number of pages13
JournalProceedings of the Geologists' Association
Volume128
Issue number1
Early online date12 Dec 2015
DOIs
Publication statusPublished - 1 Feb 2017
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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