Geological Map

The bedrock geology in the Gerrards Cross area comprises of Lambeth and London clays with some upper chalk found at the western edge of the town. The underlying bedrock is capped with gravels from the ancestral course of the river Thames. The Soils Survey (Cranfield, 2007) classifies the soil around Gerrards Cross as shallow silty calcareous soils over chalk (Soil Series 3.42 Grey Rendzinas) with some areas of deep loam (Soil Series 5.12 Gleyic brown calcareous earths) to the north of the town.