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Accelerated uplift resulting from Anglian glacioisostatic rebound in the Middle Thames Valley, UK?: Evidence from the river terrace record

Lookup NU author(s): Professor Darrel Maddy


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A relatively simple analysis of the terraces of the Middle Thames valley reveals a complex sequence of responses to late-Anglian (late Middle Pleistocene) drainage disruption. A decrease in the amounts of vertical incision separating the later post-Anglian terraces strongly suggests a major change in the rate of incision in the Middle Thames area in the post-Anglian. A late Anglian and early post-Anglian incision rate of 1.45 m ka-1 was quickly replaced by incision at a rate of 0.089 m ka-1 in the later post-Anglian period. The lower incision rate of the later post-Anglian compares favourably with previous estimates of regional uplift. Two plausible explanations for the enhanced incision in the late Anglian and early post-Anglian are recognized, one related to ponding of the river by Anglian ice and the other to glacio-isostatic rebound. In the latter case, the mismatch between expected and actual heights of late-Anglian deposits would suggest glacio-isostatic uplift of the order of 22-25 m. (C) 2000 Elsevier Science Ltd.

Publication metadata

Author(s): Maddy D, Bridgland D

Publication type: Review

Publication status: Published

Journal: Quaternary Science Reviews

Year: 2000

Volume: 19

Issue: 16

Pages: 1581-1588

Print publication date: 01/01/2000

ISSN (print): 0277-3791

ISSN (electronic): 1873-457X


DOI: 10.1016/S0277-3791(99)00105-5