A clay rich, unstratified deposit, left behind by continental glaciers, commonly with embedded pieces of gravel and rock sized particles (boulder clay), and relatively uncongenial to arable agriculture. An older term drift, comprises all loose materials covering formerly glaciated land, and as well as till, includes the stratified deposits of outwash plains, eskers, kames, varves, glaciofluvial materials and others. Indurated till is termed tillite.
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Bibliography
Martini, I.P., Brookfield, M.E., and Sadura, S., 2001. Principles of Glacial Geomorphology and Geology. Upper Saddle River, NJ: Prentice-Hall, 381 pp.
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(2008). Till. In: Chesworth, W. (eds) Encyclopedia of Soil Science. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-3995-9_599
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DOI: https://doi.org/10.1007/978-1-4020-3995-9_599
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