The BGS Lexicon of Named Rock Units — Result Details

Earnley Sand Formation

Computer Code: EA Preferred Map Code: Ea
Status Code: Full
Age range: Lutetian Age (GL) — Lutetian Age (GL)
Lithological Description: Glauconitic silty sands and sandy silts.
Definition of Lower Boundary: Rests on Wittering Formation. Base of formation marked by the transgressive surface overlain by glauconitic silty sands and pebble bed.
Definition of Upper Boundary: Overlain by the Marsh Farm Formation. Boundary marked by the upward change from the glauconitic sands of the Earnley Sand Formation to the thin-bedded clays and silts with glauconitic sand laminae of the Marsh Farm Formation.
Thickness: 22-25m
Geographical Limits: Eastern Hampshire Basin.
Parent Unit: Bracklesham Group (BRB)
Previous Name(s): Earnley 'Division' (-1518)
Earnley Formation (-3381)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Seacliffs at Whitecliff Bay, Isle of Wight. 
Reference Section  Bracklesham Bay Foreshore 
Reference(s):
Edwards, R A and Freshney, E C. 1987. Lithostratigraphical classification of the Hampshire Basin Palaeogene Deposits (Reading Formation to Headon Formation) Tertiary Research, Vol.8, 43-73. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E315 E331