Intertidal sediments in the Auchenhew Beds (Triassic) of Arran

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Abstract
Synopsis: Study of a 45 m succession of the Auchenhew Beds (Triassic) of western Arran, with a record of halite pseudomorphs, symmetrical ripple marks, flaser, wavy and lenticular bedding, bimodal palaeocurrents and particular vertical arrangements of lithologies and structures, has provided evidence of intertidal conditions, probably within the context of a relatively arid, low energy, muddy shoreline. The new observations lend support to earlier suggestions of a marine connection and influence at this time and necessitate some reconsideration of the environmental significance of trace fossils previously described from this area.