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Faughan and Dungiven Basins - DerrynaflawLondonderry
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Summary Full report
Site Type: Inland exposure
Site Status:
District:
Grid Reference: X26904095
Rocks
Rock Age: Quaternary
Rock Type: Gravel, Sand
Interest
Other interest: No data, Glacio-fluvial sediment, deltaic foresets

Summary of site:

A square kilometre of largely worked-out sands and gravels on the south-east foot slopes of Altahullion Hill still retains evidence of a delta with its surface 142m above present sea level. Flow structures in the sands indicate a water source to the south. Since its deposition it has been deeply dissected by a meltwater channel to form Altmover Glen, carving the delta into two parts.


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