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Process studies in the environments of modern glaciers provide useful models for analyzing sedimentary sequences of former glaciers and ice sheets. Ice marginal and subglacial sedimentary sequences result from the complex interaction of subaerial, subsurface and subglacial processes. Diamictons may be deposited by several of these processes and may or may not be classified genetically as tills, yet because of the nature of the environment will be transitional to one another in terms of their properties and contacts. Various controls on sedimentation determine the importance and timing of specific depositional processes and their interaction with one another, and thus facies …
