with the Orwell Member. The Orwell Member is itself subdivided into three parts, known, from the base, as units A, B and C. Unit A consists of up to 1 m of fine-grained glauconitic sands with black gravel and some fossil fragments at the base. Unit B conformably overlies Unit A, consisting of up to 1.75 m of bioturbated silty sands and sandy clayey silts, locally with broken shells and dark clay laminae. Unit C, up to 2.5 m in thickness, consists of tuffaceous sandy silt with fine sand laminae.

Use

Gravels

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