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Glacially moulded landslide runout debris in the Scottish Highlands
Item metadata
dc.contributor.author | Ballantyne, Colin K. | |
dc.date.accessioned | 2019-07-18T23:41:01Z | |
dc.date.available | 2019-07-18T23:41:01Z | |
dc.date.issued | 2018 | |
dc.identifier | 255005398 | |
dc.identifier | c7f3747e-6089-481e-8e88-a25e2f0ad1ad | |
dc.identifier | 85050282981 | |
dc.identifier | 000451529400009 | |
dc.identifier.citation | Ballantyne , C K 2018 , ' Glacially moulded landslide runout debris in the Scottish Highlands ' , Scottish Geographical Journal , vol. 134 , no. 3-4 , pp. 224–236 . https://doi.org/10.1080/14702541.2018.1501085 | en |
dc.identifier.issn | 1470-2541 | |
dc.identifier.other | RIS: urn:6026917B8D956A7BAAFBEB6FE377C44C | |
dc.identifier.uri | https://hdl.handle.net/10023/18130 | |
dc.description.abstract | A tongue of hummocky terrain ∼1 km long and ∼400 m wide extends downslope from the source area of a rock-slope failure that formed the summit arête of Sgùrr nan Ceathreamhnan in the NW Highlands. The tongue descends from ∼810 m to ∼650 m, crosses a corrie obliquely and laps onto an opposing slope. Individual hummocks are circular to elongate, up to 6 m high and streamlined. A possible origin as recessional or ice-stagnation moraines is inconsistent with hummock morphology and the alignment of the hummock belt, and the streamlining of the hummocks is incompatible with the form of unmodified rock-avalanche runout hummocks. It is proposed that the tongue of hummocky terrain represents rock-slope failure during or after ice-sheet deglaciation, and subsequent modification of runout debris by subglacial erosion during the Loch Lomond Stade (∼12.9–11.7 ka). This interpretation implies (i) that the debris was deposited by an excess-runout rock avalanche; (ii) that the glacier that subsequently occupied the corrie was warm-based; (iii) that Lateglacial landslide runout debris was not invariably evacuated by Loch Lomond Stadial glaciers, as previously suggested; and (iv) that some features interpreted as hummocky moraines elsewhere may have a similar origin. | |
dc.format.extent | 13 | |
dc.format.extent | 1830574 | |
dc.language.iso | eng | |
dc.relation.ispartof | Scottish Geographical Journal | en |
dc.subject | Glacial bedforms | en |
dc.subject | Hummocks | en |
dc.subject | Lateglacial | en |
dc.subject | Loch Lomond Stade | en |
dc.subject | Rock avalanche | en |
dc.subject | Rock-slope failure | en |
dc.subject | G Geography (General) | en |
dc.subject | NDAS | en |
dc.subject.lcc | G1 | en |
dc.title | Glacially moulded landslide runout debris in the Scottish Highlands | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Geography & Sustainable Development | en |
dc.identifier.doi | 10.1080/14702541.2018.1501085 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2019-07-19 |
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