Definition
Boulders forming distinct furrows upslope (Johnsson et al. 2012).
Category
A type of periglacial landform
Synonyms
Formation
Ploughing boulders are periglacial features associated with active layer processes, e.g., solifluction. Movement rates on Earth average from zero to a few cm per year and are exponentially related to gradient (Ballantyne 2001).
Formation models: (Johnsson et al. 2012 and references therein)
- (1)
Frost creep
- (2)
Heating and cooling
- (3)
Freezing and expansion of water trapped upslope the boulder
- (4)
Sliding of a block on the upper surface of a frozen ground which lies directly beneath a rather wet and fluid layer
- (5)
Gelifluction (freeze–thaw)
Distribution
Ploughing boulders are among the most widespread periglacial features and occur in all periglacial environments (Fig. 1).
References
Ballantyne CK (2001) Measurement and theory of ploughing boulder movement. Permafr Periglac Process 12:267–288. doi:10.1002/ppp.389
Berthling I, Eiken T, Sollid JL (2001) Frost heave and thaw consolidation of ploughing boulders in a mid-alpine environment, Finse, Southern Norway. Permafr Periglac Process 12:165–177. doi:10.1002/ppp.367
Johnsson A, Reiss D, Hauber E, Zanetti M, Hiesinger H, Johansson L, Olmvo M (2012) Periglacial mass-wasting landforms on Mars suggestive of transient liquid water in the recent past: insights from solifluction lobes on Svalbard. Icarus 218:489–505
Sernander R (1905) Flytjord I svenska fjälltrakter. Geol Fören Stosck Föeh 27:42–84
Tufnell L (1972) Ploughing blocks with special reference to NW England. Biuletyn Peryglacjalny 21:237–270
Wilson P (1993) Ploughing boulder characteristics and associated soil properties in the Lake District and southern Scotland. Scott Geogr Mag 109:18–26. doi:10.1080/00369229318736872
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Feuillet, T. (2014). Ploughing Boulder. In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_272-1
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DOI: https://doi.org/10.1007/978-1-4614-9213-9_272-1
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Publisher Name: Springer, New York, NY
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