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Section across southern England showing the inverted nature of the Weald Basin. The Weald Basin (/ ˈ w iː l d /) is a major topographic feature of the area that is now southern England and northern France from the Triassic to the Late Cretaceous. Its uplift in the Late Cretaceous marked the formation of the Wealden Anticline.
High Rocks is a key geomorphological site for sandstone weathering features developed on the highest cliffs in the Weald.The Ardingly Sandstone has suffered gentle deformation, and joints have opened out to form spectacular gulls (tension cracks) which are wide enough in places for a person to enter.
In Kent, the Wadhurst Clay has been proven to over 70m thick near Tunbridge Wells [2] and in West Sussex up to 80m near Horsham. [4] The base of the Wadhurst Clay is taken at the bottom of the Top Ashdown Pebble Bed. The base of this marker horizon marks the formational change to the Ashdown Formation. Despite its name this thin and ...
These ridges are the remains of the Wealden dome, a denuded anticline across Kent, Surrey and Sussex, which was the result of uplifting caused by the Alpine movements between 10-20 million years ago. The dome was formed of an upper layer of Chalk above subsequent layers of Upper Greensand, Gault, Lower Greensand, Weald Clay and the Hastings Beds.
These geological units make up the core of the Weald in the English counties of East Sussex and Kent. The other component formations of the Hastings Beds are the overlying Wadhurst Clay Formation and the Tunbridge Wells Sand Formation. The Hastings Beds in turn forms part of the Wealden Supergroup which underlies much of South East England.
Weald is specifically a West Saxon form; wold is the Anglian form of the word. [1] The Middle English form of the word is wēld, and the modern spelling is a reintroduction of the Old English form attributed to its use by William Lambarde in his A Perambulation of Kent of 1576. [2]
The geology of West Sussex in southeast England comprises a succession of sedimentary rocks of Cretaceous age overlain in the south by sediments of Palaeogene age. The sequence of strata from both periods consists of a variety of sandstones, mudstones, siltstones and limestones. These sediments were deposited within the Hampshire and Weald basins.
The Weald–Artois Anticline, or Wealden Anticline, is a large anticline, a geological structure running between the regions of the Weald in southern England and Artois in northern France. The fold formed during the Alpine orogeny , from the late Oligocene to middle Miocene as an uplifted form of the Weald basin through inversion of the basin.