Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland
Abstract Measurements of widths, diameters and boulder sizes of patterned ground in the Cairngorm Mountains indicate two sorts of stripes and polygons (fine and coarse). Pipkrake and boulder-inclination observations and measurements suggest that fine polygons are produced by heave and their sizes ar...
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Language: | English |
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Cambridge University Press (CUP)
1971
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Online Access: | http://dx.doi.org/10.1017/s0022143000022073 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022073 |
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crcambridgeupr:10.1017/s0022143000022073 2024-03-03T08:46:06+00:00 Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland King, R. Bruce 1971 http://dx.doi.org/10.1017/s0022143000022073 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022073 en eng Cambridge University Press (CUP) Journal of Glaciology volume 10, issue 60, page 375-386 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1971 crcambridgeupr https://doi.org/10.1017/s0022143000022073 2024-02-08T08:32:56Z Abstract Measurements of widths, diameters and boulder sizes of patterned ground in the Cairngorm Mountains indicate two sorts of stripes and polygons (fine and coarse). Pipkrake and boulder-inclination observations and measurements suggest that fine polygons are produced by heave and their sizes are dependent upon the frequency of boulders large enough to be resistant to heave, which in turn depends upon climatic severity. The lack of orientation, angle of boulder inclination, hemispherical shape, high relative size dispersion and lithological dependence of coarse polygons indicate a selective weathering origin. The frequency of low inclination of boulders in stripes suggests an origin due to solifluction, whereby large immobile or relatively slower-moving boulders impede soil (and smaller boulder) movements and control stripe spacing. Movement observation and lichenometry indicate that fine polygons and stripes and bare coarse polygons are active at the present time and that coarse stripes and vegetated coarse polygons probably date from the Little Ice Age. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Stripe ENVELOPE(9.914,9.914,63.019,63.019) Journal of Glaciology 10 60 375 386 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes King, R. Bruce Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
topic_facet |
Earth-Surface Processes |
description |
Abstract Measurements of widths, diameters and boulder sizes of patterned ground in the Cairngorm Mountains indicate two sorts of stripes and polygons (fine and coarse). Pipkrake and boulder-inclination observations and measurements suggest that fine polygons are produced by heave and their sizes are dependent upon the frequency of boulders large enough to be resistant to heave, which in turn depends upon climatic severity. The lack of orientation, angle of boulder inclination, hemispherical shape, high relative size dispersion and lithological dependence of coarse polygons indicate a selective weathering origin. The frequency of low inclination of boulders in stripes suggests an origin due to solifluction, whereby large immobile or relatively slower-moving boulders impede soil (and smaller boulder) movements and control stripe spacing. Movement observation and lichenometry indicate that fine polygons and stripes and bare coarse polygons are active at the present time and that coarse stripes and vegetated coarse polygons probably date from the Little Ice Age. |
format |
Article in Journal/Newspaper |
author |
King, R. Bruce |
author_facet |
King, R. Bruce |
author_sort |
King, R. Bruce |
title |
Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
title_short |
Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
title_full |
Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
title_fullStr |
Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
title_full_unstemmed |
Boulder Polygons and Stripes in the Cairngorm Mountains, Scotland |
title_sort |
boulder polygons and stripes in the cairngorm mountains, scotland |
publisher |
Cambridge University Press (CUP) |
publishDate |
1971 |
url |
http://dx.doi.org/10.1017/s0022143000022073 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022073 |
long_lat |
ENVELOPE(9.914,9.914,63.019,63.019) |
geographic |
Stripe |
geographic_facet |
Stripe |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 10, issue 60, page 375-386 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000022073 |
container_title |
Journal of Glaciology |
container_volume |
10 |
container_issue |
60 |
container_start_page |
375 |
op_container_end_page |
386 |
_version_ |
1792501999256731648 |