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Title: The nature and distribution of loess in Britain
Author: Lill, Grenville Owen
Awarding Body: University of Leeds
Current Institution: University of Leeds
Date of Award: 1976
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The previous literature concerning the distribution of loess in Britain has been noted with the general location of the deposits being concentrated in southern and eastern England. Other deposits have been recorded from the south west of England, Wales, north west England and Scotland. The field studies of these deposits have been limited to those occurring in eastern and south eastern England. A brief account of the loess which occurs as a band across northern Europe from the eastern part of Russia to the north of France is given, which along with the British deposits suggests that a single mechanism has controlled their transportation and deposition. 'Hobbsean' anticyclonic conditions are proposed as the dominant factor in forming this distribution pattern. The geotechnical and mineralogical properties of the samples obtained have been studied along with those supplied from a New Zealand site, for comparison. The mineralogical studies using x-ray diffractometry, x-ray fluoresence and thermogravimetry suggest that much of the 'clay fraction' consists of primary mineral particles. Study of the calcareous concretions found in the Essex brickearths along with those from an East German site and a Hungarian Brickworks has been undertaken. A highly alkaline environment is proposed for their formation, this is supported by the etching of the quartz particles by the calcium carbonate. The nature of the individual grains was observed and recorded by scanning electron microscopy; optical microscopy was used to study the soil fabric.
Supervisor: Neville, A. M. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available