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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 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 .
The Weald–Artois Anticline continues some 40 miles (64 km) further south-eastwards under the Straits of Dover, and includes the Boulonnais of France. [ 4 ] Many important fossils have been found in the sandstones and clays of the Weald, including, for example, Baryonyx .
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.
The Weald–Artois Anticline is a major anticline which outcrops in southeast England and northern France. It was formed from the late Oligocene to middle Miocene , during the Alpine orogeny . North America
A north-south cross-section through the Weald-Artois Anticline, East Sussex. The South Downs are formed from a thick band of chalk which was deposited during the Cretaceous Period between 100 and 66 million years ago within a shallow sea which extended across much of northwest Europe.
The peripheral areas are mostly of softer sandstones and clays and these form the gentler rolling landscape of Low Weald, of which the Vale of Kent is a part. [1] The Weald-Artois Anticline continues some 65 km (40 mi) further south-eastwards under the Straits of Dover, and includes the Boulonnais of France.
Artois (/ ɑːr ˈ t w ɑː / ar-TWAH, French:; Dutch: Artesië; Picard: Artoé; English adjective: Artesian) is a region of northern France. Its territory covers an area of about 4,000 km 2 and it has a population of about one million.