- Dr. Sven Lukas
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Buried ice; Dead-ice zone; Hummocky moraine; Ice-collapse landscape; Kame-and-kettle terrain; Kettle moraine
Ice-cored moraines are ice-marginal landforms that comprise a discrete body of glacier ice buried underneath sediment. These landforms are transitional because any incorporated ice needs to melt out before the final resulting landform, e.g. a stable moraine, is formed.
The term “ice-cored moraine” was introduced into the scientific literature by Østrem (1959, 1965) to describe the frequently observed occurrence of bodies of ice within sediment accumulations at or near ice fronts. Such landforms are widespread in modern glacier forelands and have been investigated in numerous settings over the past five decades.
Usually, ice-cored moraines evolve through a chain of processes involving: (a) the isolation of a body of glacier ice through the establishment of a sediment/debris cover near the margin which, if sufficiently thick
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- Graham, D. J., Bennett, M. R., Glasser, N. F., Hambrey, M. J., Huddart, D., and Midgley, N. G., 2007. A test of the englacial thrusting hypothesis of “hummocky”moraine formation: case studies from the northwest Highlands, Scotland: Comments.Boreas,36, 103–107.
- Kjær, K. H., and Krüger, J., 2001. The final phase of dead-ice development: processes and sediment architecture, Kötlujökull, Iceland.Sedimentology,48, 935–952.
- Lønne, I., and Lyså, A., 2005. Deglaciation dynamics following the Little Ice Age on Svalbard: implications for shaping of landscapes at high latitudes.Geomorphology,72, 300–319.
- Lukas, S., 2005. A test of the englacial thrusting hypothesis of ‘hummocky’ moraine formation - case studies from the north-west Highlands, Scotland.Boreas,34, 287–307.
- Lukas, S., 2007. Englacial thrusting and (hummocky) moraine formation: a reply to comments by Graham et al. (2007).Boreas,36, 108–113.
- Lukas, S., Nicholson, L. I., Ross, F. H., and Humlum, O., 2005. Formation, meltout processes and landscape alteration of high-arctic ice-cored moraines - examples from Nordenskiöld Land, central Spitsbergen.Polar Geography,29, 157–187.
- Lukas, S., Nicholson, L. I., and Humlum, O., 2007. Comment on Lønne and Lyså 2005: Deglaciation dynamics following the Little Ice Age on Svalbard: Implications for shaping of landscapes at high latitudes, Geomorphology 72, 300–319.Geomorphology,84, 145–149.
- Lukas, S., Coray, S., Graf, A., and Schlüchter, C., 2011. The influence of clast lithology and fluvial reworking on the reliability of clast shape measurements in glacial environments – a case study from a temperate Alpine glacier. In Bridgland, D. R. (ed.),Clast Lithological Analysis. Technical Guide. London: Quaternary Research Association, in press.
- Østrem, G., 1959. Ice melting under a thin layer of moraine, and the existence of ice cores in moraine ridges.Geografiska Annaler,51, 228–230.
- Østrem, G., 1965. Problems of dating ice-cored moraines.Geografiska Annaler,47A, 1–38.
- Schomacker, A., and Kjær, K. H., 2007. Origin and de-icing of multiple generations of ice-cored moraines at Brúarjökull, Iceland.Boreas,36, 411–425.
- Schomacker, A., and Kjær, K. H., 2008. Quantification of dead-ice melting in ice-cored moraines at the high-Arctic glacier Holmströmbreen, Svalbard.Boreas,37, 211–225.
- Ice-Cored Moraines
- Reference Work Title
- Encyclopedia of Snow, Ice and Glaciers
- pp 616-619
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- Encyclopedia of Earth Sciences Series
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- Springer Netherlands
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- Springer Science+Business Media B.V.
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