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Re‐evaluation of the Middle Pleistocene stratigraphy of Herefordshire, England
Author(s) -
Richards Andrew E.
Publication year - 1998
Publication title -
journal of quaternary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.142
H-Index - 94
eISSN - 1099-1417
pISSN - 0267-8179
DOI - 10.1002/(sici)1099-1417(199803/04)13:2<115::aid-jqs333>3.0.co;2-d
Subject(s) - geology , pleistocene , tributary , fluvial , paleontology , stage (stratigraphy) , glacial period , ice sheet , stratigraphy , geomorphology , early pleistocene , tectonics , geography , structural basin , cartography
Lithostratigraphical analysis of remnants of high‐level, poorly sorted gravel remnants in northeast Herefordshire has allowed the revision and expansion of the existing regional Middle Pleistocene stratigraphical sequence to incorporate two new formations. The oldest Pleistocene sediments in the region, the Humber Formation, represents part of a major, northerly derived, cold‐stage fluvial system, which incorporated the ancestors of the rivers Lugg and Wye and tributaries of the Severn. The Risbury Formation consists of glacigenic sediments, which were deposited by a large ice‐lobe emanating from a Welsh ice‐cap. The Risbury Formation is correlated with glacigenic deposits in the Cradley Brook Valley on the west side of the Malvern Hills, which were formerly ascribed to a pre‐Hoxnian, Severn Valley ice‐sheet. © 1998 John Wiley & Sons, Ltd.