Further observations on the stone runs of the Falkland Islands
DOI:
https://doi.org/10.26485/BP/1975/24/15Keywords:
stone runs morphology, composition of stone runs, frost weatheringAbstract
The last discussion on the stone runs of the Falkland Islands criticised the theory that solifluction was a significant process in their evolution, and it advocated that they evolved in situ. This paper describes morphological and internal characteristics of the stone runs which were ignored in previous accounts, and considers the spatial relationships of the runs with glacial landforms, with other slope phenomena, and with remnants of a regolith of chemically rotted bedrock. It is concluded that processes similar to those which form sorted stone stripes in periglacial environments probably created the stone runs, but that the latter evolved on an exceptional scale on the Falkland Islands during the Pleistocene because of climatic, lithological and regolith factors.
References
ANDERSSON, J. G., 1906 - Solifluction, a component of subaerial denudation. Jour. Geol., vol. 14; p, 91-112.
BAKER, H. A., 1922 - Final report on the geology of the Falkland Islands, 1920-1922. Stanley, 38.
CHAMBERS, M. J., 1967 - Investigations of patterned ground at Signy Island, South Orkney Islands, III. Miniature patterns, frost heaving and general conclusions. British Antarctic Survey Bull. No. 12; p. 1-22.
CLAPPERTON, C. M., 1971 - Evidence of cirque glaciation in the Falkland Islands. Jour. Glaciol., vol. 10, No. 58; p. 121-25.
EMBLETON, C , and KING, C. A. M., 1968 - Glacial and Periglacial Geomorphology. Arnold, London.
GEIKIE, J., 1894 - The Great Ice Age. 3rd ed. London.
JOHN, B. S., and SUGDEN, D. E., 1971 - Raised marine features and phases of glaciation in the South Shetland Islands. British Antarctic Survey Bull. No. 24; p. 45-111.
JOYCE, J. R. F., 1950 - Stone runs of the Falkland Islands. Geol. Mag;, vol. 87, No. 2; p. 105-15.
LUNDQUIST, G., 1962 - Patterned ground and related frost phenomena in Sweden. Arsb. Sver. Geol. Unders., 55, No. 7; 101 pp.
MAUNG, D. H., 1960 - Geological structure and history of the Falkland Islands, (in) The Falkland Islands, eds. M. B. R. Cawkell, D. H. Maling and F. M. Cawkell; Macmillan, London.
WASHBURN, A. L., 1956 - Classification of patterned ground and review of suggested origins. Bull. Geol. Soc. Am., vol. 67, No. 7.; p. 823-65.
