Harwich Formation

The Harwich Formation is a geological formation found in the London Basin of southeastern England. It is Ypresian (early Eocene) in age. It lies unconformably on the Lambeth Group over most of its extent, but may overlie either the Thanet Formation or the Chalk Group to the south. It is overlain by the London Clay Formation.[1]

Harwich Formation
Stratigraphic range: Ypresian
TypeFormation
Unit ofThames Group
Sub-unitsBlackheath Member
UnderliesLondon Clay Formation
OverliesLambeth Group
Thickness<2-24 m
Lithology
Primarysand, silt & clay
Othergravel
Location
Regionsoutheastern England
CountryUnited Kingdom
ExtentLondon Basin
Type section
Named forHarwich

References

  1. "Harwich Formation". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 31 July 2016.
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