Abstract
Around Durness north-west Scotland, the top of the Sailmhor Formation, Durness Group, is developed as a palaeokarstic surface deeply penetrated by breccia-filled fissures. Fossil evidence for the age of the Sailmhor Formation is equivocal, but we suggest here that the brecciated surface probably represents a break corresponding to the whole of the Middle and Upper Cambrian. Such a break is also seen in the contemporaneous carbonate successions in Greenland and Spitzbergen.
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Palmer, T., McKerrow, W. & Cowie, J. Sedimentological evidence for a stratigraphical break in the Durness Group. Nature 287, 720–722 (1980). https://doi.org/10.1038/287720a0
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DOI: https://doi.org/10.1038/287720a0
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