Abstract
RELICT periglacial phenomena have been recorded from south-west England for more than two hundred years. Reference has been made to head, clitter, rubble drift, loessic deposits and other manifestations of mechanical rock-weathering and ablation of debris under sub-arctic conditions1, to geomorphological features which resemble actively developing tundra land-forms2 and to fossil floras with arctic or alpine characters3. But so far as has been ascertained, no account has been given of phenomena which attest to the former existence of frozen ground (tjäle) in Devon.
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References
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WATERS, R. Involutions and Ice-Wedges in Devon. Nature 189, 389–390 (1961). https://doi.org/10.1038/189389a0
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DOI: https://doi.org/10.1038/189389a0
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