Abstract
Astract Previous hypotheses to explain the origin of the Labyrinth have invoked floods, glacial erosion, and uniformitarian arguments of salt weathering and deflation. The landscape is one of reticulate troughs, deeper to the east than west, with irregular long profiles and enclosed depressions. The troughs are shown to belong to a hierarchy and display curvilinear form. Their origin is related to glacial plucking along joints and subsequent deepening by ice-marginal and proglacial meltwater systems. Periglacial alteration of the primary form, particularly asymmetric infill by solifluction and scree, is largely a result of debris supplied by freeze-thaw processes. Intertrough blocks initially formed upstanding masses between reticulate, joint-controlled depressions, and were subject to subglacial abrasion by a glacier sliding over its bed. The required wet-based ice conditions imply either extremely thick ice or a warmer climate than present. Landform is used to deduce a complex origin for the Labyrinth w...
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