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Late Pleistocene–Holocene river dynamics at the Trent-Soar confluence, England, UK

Auteur(s) et Affiliation(s)

BROWN, A.G.
Palaeoenvironmental Lab., Univ., Highfields Campus, Southampton, Royaume-Uni
TOMS, P.S.
Geochronology Lab., Dept. of Natural and Social Sciences, Univ., Gloucestershire, Royaume-Uni
CAREY, C.J.
Inst. of Archaeology and Antiquity, Univ., Birmingham, Royaume-Uni
HOWARD, A.J.
Inst. of Archaeology and Antiquity, Univ., Birmingham, Royaume-Uni
CHALLIS, K.
Inst. of Archaeology and Antiquity, Univ., Birmingham, Royaume-Uni


Description :
This paper uses a combination of remote sensing techniques (LiDAR, GPR, ER), borehole survey and chronometric dating to test differentiation in river style in the confluence-zone of a medium-sized, mixed-load, temperate river system (Trent, UK), which on the basis of planform evidence appears to conform to the meandering model. However, the analysis of confluence sediment body stratigraphy demonstrates that the confluence does not correspond with a simple meander migration model and chronostratigraphic data suggests it has undergone 2 major transformations. Firstly, from a high-energy braid-plain confluence in the Lateglacial, to a lower-energy braided confluence in the early to middle Holocene, which created a compound terrace. Second, incision into this terrace, creating a single-channel confluence with a high sinuosity south bank tributary (the River Soar). The late Holocene evolution of the confluence can be seen as a variant of the incisional-frequent channel reorganization (avulsion) model with sequential downstream migration of the reattachment point.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2013, vol. 38, n°. 3, p. 237-249, nombre de pages : 13, Références bibliographiques : 2 p.

Date :
2013

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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