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Geology of south-eastern England showing the High Weald in yellow-green (9a) and the Low Weald in darker green (9); chalk downland is in pale green (6) Geological section from north to south: High and Low Weald shown as one
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 .
Weald The Wealden Group, occasionally also referred to as the Wealden Supergroup , is a group (a sequence of rock strata ) in the lithostratigraphy of southern England . The Wealden group consists of paralic to continental (freshwater) facies sedimentary rocks of Berriasian to Aptian age and thus forms part of the English Lower Cretaceous .
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.
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 geology of East Sussex is defined by the Weald–Artois anticline, a 60 kilometres (37 mi) wide and 100 kilometres (62 mi) long fold within which caused the arching up of the chalk into a broad dome within the middle Miocene, [1] which has subsequently been eroded to reveal a lower Cretaceous to Upper Jurassic stratigraphy.
Dorset is one of only three areas on the UK mainland that has the geology needed to make this possible, according to the company. ... a member of Weald Action Group and local Green Party coordinator.
The oldest rocks encountered within the National Park are those of the Weald Clay Formation which stratigraphers place within the Wealden Group.They comprise a mix of sandstones, mudstones and limestones from the Hauterivian (c.139-129 Ma (million years ago)) and Barremian (c.129-124 Ma) stages. [1]