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Paleolimnological studies of laminated sediments from the Shropshire-Cheshire meres

Lookup NU author(s): Dr Martin Jones

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Abstract

Studies of frozen and soft mud cores from Ellesmere Mere, Rostherne Mere and Berrington Pool, the three deepest of the Shropshire-Cheshire meres of the English Midlands, reveal the presence of laminations which may be varves. This hypothesis is being tested by means of fine resolution diatom and other microfossil analysis after the method of Simola (1977). Even where the laminations are faint and disrupted, it appears that seasonal signals from algal blooms are preserved.Organic geochemical analyses of sediments from Ellesmere show that the uppermost layers contain abundant organic matter (over 17% total dry matter) and that the extractable lipid fractions from different horizons exhibit clear compositional differences. These are produced by temporal changes in the organic inputs to the sediments, and also by diagnetic effects.The clastic and organic content of the cores also provides evidence for lake level variations in this area over the last 250 years.


Publication metadata

Author(s): Farr KM, Jones DM, O'Sullivan PE, Eglinton G, Tarling DH, Hedges REM

Publication type: Article

Publication status: Published

Journal: Hydrobiologia

Year: 1990

Volume: 214

Issue: 1

Pages: 279-292

ISSN (print): 0018-8158

ISSN (electronic): 1573-5117

Publisher: Springer Netherlands

URL: http://dx.doi.org/10.1007/BF00050962

DOI: 10.1007/BF00050962


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