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About: Weald Clay

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Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England, between the North and South Downs, in an area called the Weald Basin. It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed portion of the Wessex Formation on the Isle of Wight. It predominantly consists of thinly bedded mudstone. The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking.

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  • Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England, between the North and South Downs, in an area called the Weald Basin. It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed portion of the Wessex Formation on the Isle of Wight. It predominantly consists of thinly bedded mudstone. The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking. The formation was deposited in lagoonal, lacustrine and alluvial conditions that varied from freshwater to brackish. The clay alternates with other subordinate lithologies, notably hard red-weathering beds of ironstone, limestone (Sussex Marble) and sandstones, notably including the calcareous sandstone unit referred to as the Horsham Stone. It has a gradual, conformable contact with the underlying Tunbridge Wells Sand Formation, and has a sharp, unconformable contact with the overlying Atherfield Clay Formation, a shallow marine unit deposited after marine transgression during the Aptian. (en)
  • A Formação Weald Clay, também conhecida simplesmente como Weald Clay é uma unidade de rocha sedimentar do Cretáceo Inferior subjacente às áreas do Sudeste da Inglaterra, entre as Colinas do Norte e do Sul, em uma área chamada . É a unidade mais alta do de rochas dentro da Bacia Weald, e a porção superior da unidade é equivalente em idade à porção exposta da Formação Wessex na Ilha de Wight. Ele consiste predominantemente em lamito com camadas finas. A formação foi depositada em condições lagunares, lacustres e aluviais que variaram de água doce a salobra. A argila se alterna com outras litologias subordinadas, notavelmente leitos duros de pedra-ferro, calcário (Mármore de Sussex) e arenitos, incluindo a unidade de arenito calcário referida como a . Ele tem um contato gradual e conformável com a subjacente e tem um contato brusco e inconformável com a sobrejacente, uma unidade marinha rasa depositada após a transgressão marinha durante o Aptiano. (pt)
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  • 1770941 (xsd:integer)
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  • 15120 (xsd:nonNegativeInteger)
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  • 1115442793 (xsd:integer)
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  • Hauterivian-Barremian, (en)
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  • Weald Clay exposed at Clock House Brickworks (en)
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  • Extent of the Weald Clay within the Weald Basin, shown with horizontal lines (en)
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  • Weald Clay (en)
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  • Barremian (en)
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  • Horsham Stone Member (en)
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  • 27600.0 (dbd:second)
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  • Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England, between the North and South Downs, in an area called the Weald Basin. It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed portion of the Wessex Formation on the Isle of Wight. It predominantly consists of thinly bedded mudstone. The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking. (en)
  • A Formação Weald Clay, também conhecida simplesmente como Weald Clay é uma unidade de rocha sedimentar do Cretáceo Inferior subjacente às áreas do Sudeste da Inglaterra, entre as Colinas do Norte e do Sul, em uma área chamada . É a unidade mais alta do de rochas dentro da Bacia Weald, e a porção superior da unidade é equivalente em idade à porção exposta da Formação Wessex na Ilha de Wight. Ele consiste predominantemente em lamito com camadas finas. (pt)
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  • Formação Weald Clay (pt)
  • Weald Clay (en)
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