Zobrazeno 101 - 110
of 288
pro vyhledávání: '"K, Ballantyne"'
Autor:
Colin K. Ballantyne
Publikováno v:
Scottish Geographical Journal. 115:249-259
(1999). An Teallach: A late Devensian Nunatak in Wester Ross. Scottish Geographical Journal: Vol. 115, No. 3, pp. 249-259.
Autor:
Colin K. Ballantyne
Publikováno v:
Scottish Geographical Journal. 115:319-328
Geomorphological mapping and analysis of soil mineralogy indicates that all summits on the Knoydart Peninsula were over‐ridden by the last ice sheet apart from Ladhar Bheinn (1020 m), where the ice attained a maximum altitude of c. 950 m. This figu
Autor:
Colin K. Ballantyne, Simon Hinchliffe
Publikováno v:
Scottish Geographical Journal. 115:53-70
Calculations based on the volume of talus accumulations at the foot of a basalt cliff indicate that 4.3–7.8 m (mean 5.6 m) of rockwall retreat has occurred since deglaciation at 17.5 Cal ka BP, implying average rockwall retreat rates of 0.25–0.45
Publikováno v:
Quaternary Science Reviews. 17:1149-1184
Recent models of the last Scottish ice sheet suggest that nunataks remained above the ice surface in areas peripheral to the main centres of accumulation. This proposition has been investigated on 140 mountains over an area of 10,000 km2 in NW Scotla
Autor:
Colin K. Ballantyne
Publikováno v:
Permafrost and Periglacial Processes. 9:327-345
In north-west Scotland, mountain-top detritus forms blockfields or diamicts, depending on lithology. Clast angularity, absence of grussification and transition to underlying rock imply formation by frost-wedging of bedrock. Age is constrained by trim
Autor:
Colin K. Ballantyne
Publikováno v:
Earth Surface Processes and Landforms. 23:625-641
The summit plateau of The Storr (719 m) in northern Skye is mantled by a sheet of aeolian sediment up to 2·9 m thick, covering an area of 33 000 m2 with a volume of 41 000 m3. The deposits are of massive, poorly sorted sand with significant componen
Publikováno v:
Earth Surface Processes and Landforms. 23:545-560
Sections up to 3·5 m deep cut through the upper rectilinear segment of relict, vegetated talus slopes at the foot of the Trotternish escarpment reveal stacked debris-flow deposits intercalated with occasional slopewash horizons and buried organic so
Publikováno v:
The Holocene. 8:347-351
Major postglacial rock slope failures are a common feature of the Scottish Highlands and other mountainous areas that were deglaciated at the end of the Pleistocene, but evaluation of the causes and triggers of failure has been hindered by a lack of
Autor:
Colin K. Ballantyne, Angela L. Lamb
Publikováno v:
Proceedings of the Geologists' Association. 109:305-316
The mountains of the SW Lake District support a high-level weathering limit that separates an upper zone of shattered bedrock, blockfields and tors from a lower zone of glacially-moulded bedrock. This weathering limit declines from c. 870 m in the ea
Autor:
Colin K. Ballantyne, Danny McCarroll
Publikováno v:
Scottish Journal of Geology. 33:183-186
[Dahl et al. (1996)][1] have recently published a reconstruction of the upper surface of the last (Late Devensian) ice sheet on Skye. This shows that at its maximum thickness the ice surface descended from 750–870 m in the Cuillins to c. 450 m in n