Abstract

Synopsis Polyphase deformation of glaciolacustrine sediments in the Cairngorm Mountains suggests ice-margin oscillations within a plateau ice-field outlet lobe following the Late Devensian Glacial Maximum, c. 18 ka 14 C BP . Lithostratigraphical analysis of exposures of glacial lake sediments in Gleann Einich reveals that an initial phase of proglacial thrusting was followed by a phase of subglacial deformation resulting from glacier-overriding from the south. Subsequent ice retreat led to the deposition of more extensive lake and delta sediments. This new model of active retreat supports recent theories of a Late Devensian deglaciation punctuated by ice-margin readvances.

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