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Influence of temperature and moisture availability on physical rock weathering along the Victoria Land coast, Antarctica

Published online by Cambridge University Press:  15 October 2007

Christine Elliott
Christine Elliott
Affiliation:
Department of Geography, University of Canterbury, Private Bag 4800, Christchurch 8140, New [email protected]
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Abstract

Rock weathering plays an important role in soil development. A better understanding of how different temperature and moisture regimes impact on the rates of rock breakdown can thus contribute to our knowledge of how rates of soil production might be affected by changes in climate. Laboratory simulations using two temperature cycles determined from field data and three moisture levels were carried out on samples of granite from three locations along the Victoria Land coast. Estimates of weathering rate from these experiments were of the same order of magnitude as some other more field based studies undertaken in similar environments. However, actual values for samples from the three locations varied depending on the specific characteristics of the rock, especially grain size, porosity and extent of micro-cracking. Moisture availability was found to be an important factor in determining weight loss in the samples from Gneiss Point but not in those from Terra Nova Bay or Teall Island with the moderate level of moisture application having the greatest impact. Spring/autumn temperature cycles had a different effect on the breakdown of the rock samples compared to summer cycles but the magnitude of the effect was dependent on moisture level and rock characteristics, especially quartz content and the ability to absorb heat and moisture. The samples of rock from Terra Nova Bay and Gneiss Point where no moisture had been applied had significantly higher rates of breakdown under spring/autumn cycles than summer ones. However, this effect was reversed in the Gneiss Point samples after moisture was added. A future climate scenario using the weathering rates found in this research where there was, for example, a 10% increase in summer temperature cycles and a corresponding decrease in spring/autumn cycles predicted that a reduction in weathering would occur in conditions of little or no precipitation at Terra Nova Bay and Gneiss Point but there would be limited effect under higher levels of moisture.

Keywords

freeze-thawGranite Harbour Intrusiveslaboratory simulationsLatitudinal Gradient Projectrock characteristics
Type
Earth Sciences
Information
Antarctic Science , Volume 20 , Issue 1 , February 2008 , pp. 61 - 67
Copyright
Copyright © Antarctic Science Ltd 2008

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References

Alexander, M.G., Mackechnie, J.R. & Ballim, Y. 1999. Guide to the use of durability indexes for achieving durability in concrete structures. Research Monograph No. 2, Cape Town: University of Cape Town, 35 pp.Google Scholar
André, M.-F. 1995. Postglacial microweathering of granite roches moutonnées in northern Scandinavia (Riksgransen area, 68°N). In Slaymaker, O., ed. Steeplands geomorphology. Chichester: Wiley, 103–127.Google Scholar
Attewell, P.B. & Farmer, I.W. 1976. Principles of engineering geology. London: Chapman Hall, 1072 pp.CrossRefGoogle Scholar
Bockheim, J.G. 2002. Landform and soil development in the McMurdo Dry Valleys, Antarctica: a regional synthesis. Arctic, Antarctic and Alpine Research, 34, 308–317.CrossRefGoogle Scholar
Callaghan, T.V., Press, M.C., Lee, J.A., Robinson, D.L. & Anderson, C.W. 1999. Spatial and temporal variability in the responses of Arctic ecosystems to environmental change. Polar Research, 18, 191–197.CrossRefGoogle Scholar
Campbell, I.B., Claridge, G.G.C. & Balks, M.R. & Campbell, D.I.et al. 1997. Moisture content in soils of the McMurdo Sound and Dry Valley region of Antarctica. In Lyons, W.B., Howard-Williams, C. & Hawes, I., eds. Ecosystem processes in Antarctic ice-free landscapes. Rotterdam: Balkema, 61–76.Google Scholar
Elliott, C. 2004. Surface moisture availability and rock weathering in cold climates. New Zealand Geographer, 61 (1), 44–51.CrossRefGoogle Scholar
Fitzharris, B.B. 1996. The cryosphere: changes and their impacts. In Watson, R.T., Zinyowera, M.C. & Moss, R.G., eds. Climate change 1995: impacts, adaptations, and mitigation of climate change: scientific-technical analyses. Cambridge: Cambridge University Press, 241–266.Google Scholar
Fountain, A.G., Lyons, W.B., Burkins, M.B., Dana, G.L., Doran, P.T., Lewis, K.J., McKnight, D.M., Moorhead, D.L., Parsons, A.N., Priscu, J.C., Wall, D.H., Wharton Jr, R.A. & Virginia, R.A. 1999. Physical controls on the Taylor Valley ecosystem, Antarctica. Bioscience, 49, 961–971.CrossRefGoogle Scholar
Goudie, A.S. 2000. Experimental physical weathering. Zeitchrift für Geomorphologie, Supplementary Band, 120, 133–144.Google Scholar
Hall, K. 1988. A laboratory simulation of rock breakdown due to freeze-thaw in a maritime Antarctic environment. Earth Surface Processes and Landforms, 13, 369–382.CrossRefGoogle Scholar
Hall, K. 1998. Rock temperatures and implications for cold region weathering. II: new data from Rothera, Adelaide Island, Antarctica. Permafrost and Periglacial Processes, 9, 47–55.3.0.CO;2-N>CrossRefGoogle Scholar
Hall, K. & Hall, A. 1996. Weathering by wetting and drying: some experimental results. Earth Surface Processes and Landforms, 21, 365–376.3.0.CO;2-L>CrossRefGoogle Scholar
Hall, K., Thorn, C.E., Matsuoka, N. & Prick, A. 2002. Weathering in cold regions: some thoughts and perspectives. Progress in Physical Geography, 26, 577–603.CrossRefGoogle Scholar
Howard-Williams, C., Peterson, D., Lyons, W.B., Cattaneo-Vietti, R. & Gordon, S. 2006. Measuring ecosystem response in a rapidly changing environment: the Latitudinal Gradient Project. Antarctic Science, 18, 465–471.CrossRefGoogle Scholar
Jahn, A. 1976. Geomorphological modeling and nature protection in Arctic and subarctic environments. Geoforum, 7, 121–137.CrossRefGoogle Scholar
Lautridou, J.-P. & Seppala, M. 1986. Experimental frost shattering of some Precambrian rocks, Finland. Geografiska Annaler, 68A, 89–100.CrossRefGoogle Scholar
Lowe, P.R. 1977. An approximating polynomial for the computation of saturation vapour pressure. Journal of Applied Meteorology, 16, 100–103.2.0.CO;2>CrossRefGoogle Scholar
McClave, J.T. & Sincich, T. 2000. Statistics, 8th ed.Upper Saddle River, NJ: Prentice Hall, 112 pp.Google Scholar
Merriam, R., Rieke, H.H. & Young, C.K. 1970. Tensile strength related to mineralogy and texture of some granitic rocks. Engineering Geology, 4, 155–160.CrossRefGoogle Scholar
Peterson, D. & Howard-Williams, C., eds. 2001. The Latitudinal Gradient Project. Christchurch: Antarctica New Zealand, Special Publication, 46 pp.Google Scholar
Robinson, D.A. & Williams, R.B.G. 1994. Rock weathering and landform evolution. Chichester: John Wiley, 544 pp.Google Scholar
Spate, A.P., Burgess, J.S. & Shevlin, J. 1995. Rates of rock surface lowering, Princess Elizabeth Land, Eastern Antarctica. Earth Surface Processes and Landforms, 20, 567–573.CrossRefGoogle Scholar
Summerfield, M.A., Sugden, D.E., Denton, G.H., Marchant, D.R., Cockburn, H.A.P. & Stuart, F.M. 1999. Cosmogenic isotope data support previous evidence of extremely low rates of denudation in the Dry Valleys Region, southern Victoria Land, Antarctica. Geological Society, London, Special Publications, 162, 255–267.CrossRefGoogle Scholar
von Ende, C.N. 1993. Repeated measures analysis: growth and other time dependent measures. In Scheiner, S.M. & Gurevitch, J., eds. Design and analysis of ecological experiments. New York: Chapman & Hall, 113–137.Google Scholar
Warke, P. 2000. Micro-environmental conditions and rock weathering in hot, arid regions. Zeitchrift für Geomorphologie, Supplementary Band, 120, 83–95.Google Scholar
Yoshikawa, K., Ishimaru, S. & Harada, K. 2000. Weathering of Palaeozoic marble in the Independence Hills and Patriot Hills, Ellsworth Mountains, Antarctica. Physical Geography, 21, 568–576.CrossRefGoogle Scholar