England
MoD use
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Part of the England islands map.
Irish: Foulness Island; French: Foulness
Bedrock: Thames Group (Clay, Silt, Sand And Gravel), Eocene–Eocene. Superficial deposits: Alluvium (Clay (Undifferentiated) And Silt (Undifferentiated) And Sand(Undifferentiated)). Contains British Geological Survey materials © UKRI 2026, licensed under the BGS Open Data Licence (OGL v3.0). Source: BGS DigMapGB-625 Bedrock & Superficial WMS.
Last reviewed: 2026-08-13.