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New OSL dating of UK loess: indications of two phases of Late Glacial dust accretion in SE England and climate implications
Author(s) -
Clarke Michèle L.,
Milodowski Antoni E.,
Bouch Jon E.,
Leng Melanie J.,
Northmore Kevin J.
Publication year - 2007
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/jqs.1061
Subject(s) - geology , loess , accretion (finance) , glacial period , debris , geochemistry , archaeology , quartz , paleontology , geomorphology , physical geography , oceanography , geography , physics , astrophysics
Windblown dust deposits or loess, locally known in the UK as brickearth, blanket many parts of southern England outside the limits of the British and Irish Ice Sheet. The best‐studied loess exposures occur in Kent, southeast England, where the deposits are believed to be Late Glacial in age. New sedimentological evidence is presented for phases of accretion with two distinct units, a calcareous brickearth exhibiting periglacial cryoturbation and a non‐calcareous, massive brickearth. Optically stimulated luminescence (OSL) dating has been applied to chemically isolated modal quartz silts to derive a chronology for sediment accretion and to better understand the palaeoclimatic significance of these deposits. © British Geological Survey/Natural Environment Research Council copyright 2007. Reproduced with the permission of BGS/NERC. Published by John Wiley & Sons, Ltd.