. . . . . "To 10m."@en . "Blue-Grey Series [Obsolete: use BCD, ESTI]"@en . "0.0118"^^ . "Clay and silt with subsidiary gravel and sand. Stratified superficial deposits. Occurs onshore. Formed during the Devensian Stage (Quaternary Period) (.116-.0118 Ma BP)."@en . "ESTI"@en . "Essie Till Formation"@en . "Pebbly sandy silty clay diamicton, calcareous, dark bluish grey but mottled orangey brown near top, and dark greenish grey at depth, containing well-dispersed clasts of red granite, quartzite and schistose metasediments, and sparse fragments of shell, red marl, red sandstone and chalk. The unit locally includes rafts of red clayey diamicton and black fossiliferous mudstone. Commonly including a lower unit that is dark reddish brown."@en . . "Essie Till Formation"@en . . "Generally sharp, erosional with overlying glaciofluvial or alluvial sand and gravel or ground surface."@en . . "0.116"^^ . . "Sharp uncomformable, undulating contact with Hatton Till Formation or bedrock, or gradational, planar, glacitectonic contact with laminated silt and clay of the Ugie Clay Formation. At partial type section NK05SE 1 the unit unconformably overlies unnamed greenish grey sand and gravel, which in turn rests on olive brown diamicton of the Hythie Till Formation."@en . . "stable"@en .