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The ‚loess’︁ section at Borden, Kent, SE England
Author(s) -
Catt John A.,
Bateman Richard M.,
Wintle Ann G.,
Murphy Christopher P.
Publication year - 1987
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.3390020207
Subject(s) - colluvium , geology , loess , silt , deposition (geology) , geochemistry , holocene , geomorphology , sedimentary depositional environment , interglacial , thermoluminescence dating , mineralogy , sediment , paleontology , glacial period , alluvium , structural basin
A 5.3m profile originally described as loess with a buried interglacial soil is reinterpreted from petrographic evidence and thermoluminescence dating as a Holocene colluvial accretionary soil. Mineralogical analyses of coarse silt (16–63 μm) fractions suggest that most of the silty colluvium was derived from weathered Thanet Beds upslope, though some loess was incorporated during the final depositional phase. Thin sections show that clay illuviation occurred penecontem‐poraneously with deposition of colluvium. Thermoluminescence properties suggest partial optical bleaching of the grains during rapid deposition, which is consistent with a Holocene colluvial origin.