Whitchurch Sand Formation

Whitchurch Sand Formation
Stratigraphic range: Valanginian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Wealden Group
Underlies	Gault, Lower Greensand Group
Overlies	Haddenham Formation, Portland Group
Thickness	up to 20 metres (70 ft)
Lithology
Primary	Sandstone
Other	Mudstone, Siltstone, Ironstone
Location
Region	Europe
Country	United Kingdom
Extent	Buckinghamshire, Oxfordshire, Wiltshire
Type section
Named for	Whitchurch, Buckinghamshire

The Whitchurch Sand Formation is a geological formation, in England. part of the Wealden Group, it is preserved as an inlier in hills in Buckinghamshire, Oxfordshire and Wiltshire. It was deposited in the Valanginian stage of the Early Cretaceous. The lithology largely consists of unconsolidated fine-medium grained sand with isolated bodies of limonite cemented sandstone, with localised beds of siltstone and mudstone. ^{[1] [2]}

References

1. "Whitchurch Sand Formation". BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 7 August 2018.
2. Radley, Jonathan D.; Allen, Percival (April 2012). "The marginal Wealden (non-marine Lower Cretaceous) between Wiltshire and Buckinghamshire, England". Proceedings of the Geologists' Association. 123 (2): 374–381. doi:10.1016/j.pgeola.2011.11.004. ISSN   0016-7878.