Abstract

Two palaeosol sequences are described from early Carboniferous floodplain deposits from South Wales, which exhibit a complex series of pedogenic profiles. Soil types recognized include vertic Aridisols and Entisols, as well as dolomite-bearing Sulphaquents. The sequential and lateral changes in these soil types are interpreted as due to both intrinsic factors, such as channel avulsion and changing proximity to channel belts (causing changes in sedimentation rates), and extrinsic factors, such as possible climatic changes and a marine transgression.

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