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Visean

Visean
1. An epoch in the Mississippian, comprising the Chadian, Arundian, Holkerian, Asbian, and Brigantian Ages (these are also stage names in western European stratigraphy). The Visean is preceded by the Tournaisian, followed by the Serpukhovian, and dated at 349.5–332.9 Ma ( Harland et al., 1989).

2. The name of the corresponding European series which has its lower boundary at the base of the Chadian Stage near Clitheroe, Lancashire, England. It is roughly contemporaneous with the upper Carboniferous Limestone Series (Britain), and the upper Osagean, Meramecian, and lower Chesterian (N. America). See also DINANTIAN.

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Visean

Visean See CARBONIFEROUS.

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