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Quicksand Structures in the Bedded Tuffs of Great Langdale, Westmorland

Abstract

QUICKSAND structures similar to those described by Selley (ref. 1, Fig. 1a and b) abound in the bedded tuffs (Ordovician) of Great Langdale. These sediments appear to have been highly susceptible to the type of behaviour suggested by Shearman2 and called by him “ ‘quicksand’ movement”. These authors described examples in Torri-donian1 and Devonian2 sandstones where this process, involving the repacking of sand grains and the expulsion of excess pore-water from the sediment, had, they assumed, operated “penecontemporaneously”. It appears that both authors consider that this process took place below a thin (less than 1 m ?) cover of sediment.

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References

  1. Selley, R. C., in Developments in Sedimentology, 1 (Elsevier Co., London, 1964).

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  2. Shearman, D. J., in Developments in Sedimentology, 1 (Elsevier Co., London, 1964).

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PARKER, W. Quicksand Structures in the Bedded Tuffs of Great Langdale, Westmorland. Nature 210, 1247–1248 (1966). https://doi.org/10.1038/2101247a0

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