Weald Clay

Weald Clay

Weald Clay is a Lower Cretaceous sedimentary rock underlying areas of South East England. It is part of the Wealden Group of rocks. The clay is named after the Weald, an area of Sussex. It varies from orange and grey in colour and is used in brickmaking.

The un-weathered form is blue/grey, and the yellow/orange is the weathered form; they have quite different physical properties. Blue looks superficially like a soft slate, is quite dry and hard and will support the weight of buildings quite easily.Because it is quite impermeable , and so dry, it does not get broken by tree roots. It is typically found at 750mm down below a layer of yellow clay. Yellow, found on the surface, absorbs water quite readily so becomes very soft in the winter.

The two different types make quite different bricks.

ee also

* Wealden
* Wealden Group
* Clay
* London Clay
* Oxford Clay
* List of dinosaur-bearing rock formations


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Weald clay — Weald Weald, n. [AS. See {Wold}.] A wood or forest; a wooded land or region; also, an open country; often used in place names. [1913 Webster] Fled all night long by glimmering waste and weald, And heard the spirits of the waste and weald Moan as… …   The Collaborative International Dictionary of English

  • Weald-Clay — (spr. Uild Kleh), so v. w. Waldthon …   Pierer's Universal-Lexikon

  • Weald clay — noun Geology a series of clays, sandstones, limestones, and ironstones forming the upper part of the Wealden strata …   English new terms dictionary

  • Weald — Weald, n. [AS. See {Wold}.] A wood or forest; a wooded land or region; also, an open country; often used in place names. [1913 Webster] Fled all night long by glimmering waste and weald, And heard the spirits of the waste and weald Moan as she… …   The Collaborative International Dictionary of English

  • Weald — The Weald (PronEng|wɪəld) is the name given to a physiographic area in south east England situated between the parallel chalk escarpments of the North and the South Downs. It should be regarded in two separate parts: the sandstone High Weald in… …   Wikipedia

  • weald — n. (also weald) (prec. by the) Brit. a formerly wooded district including parts of Kent, Surrey, and East Sussex. Phrases and idioms: weald clay beds of clay, sandstone, limestone, and ironstone, forming the top of Wealden strata, with abundant… …   Useful english dictionary

  • Weald and Downland Open Air Museum — The museum covers convert|50|acre|ha, with nearly 50 historic buildings dating from the thirteenth to nineteenth centuries, along with gardens, farm animals, walks and a lake.The buildings at the museum were all threatened with destruction. They… …   Wikipedia

  • Oxford Clay Formation — Oxford Clay (Jurassic) exposed near Weymouth, England. The Oxford Clay Formation is a Jurassic marine sedimentary rock formation underlying much of southeast England, from as far west as Dorset and as far north as Yorkshire. The Oxford Clay is of …   Wikipedia

  • Oxford Clay — is a Jurassic marine sedimentary rock underlying much of South East England, from as far west as Dorset and as far north as Yorkshire. The Oxford Clay is argillaceous (consists of clay) and is of Callovian to lower Oxfordian age.Oxford Clay… …   Wikipedia

  • High Weald Landscape Trail — Infobox Hiking trail Name=High Weald Landscape Trail Photo= Caption= Location=East and West Sussex, and Kent England Designation= Length=convert|90|mi|abbr=on Start/End Points=Horsham Rye Use=Hiking ElevChange= HighPoint= LowPoint= Difficulty=… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”