gault

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gault

(ɡɔːlt)
n
(Geological Science) a stiff compact clay or thick heavy clayey soil
[C16: of obscure origin]

Gault

(ɡɔːlt)
n
(Geological Science) the Gault the Lower Cretaceous clay formation in eastern England
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In the context of surface repository for low level nuclear waste, the Lower Cretaceous Gault clay formation is a near-surface aquitard that Andra (the French National Radioactive Waste Management Agency) has begun to investigate in the area of Brienne-le-Chateau (north-eastern France).
The Gault clay formation in the studied area consists of siliciclastic shales deposited in an open marine environment at the maximum flooding surface [25] from Middle to Upper Albian (Lower Cretaceous) on the Greensands formation [26] (Figure 1).