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Geological Society, London, Special Publications; 1993; v. 72; p. 235-244;
DOI: 10.1144/GSL.SP.1993.072.01.19
© 1993 Geological Society of London

Coastal Dunefields

Use of cement types in the palaeoenvironmental interpretation of coastal aeolianite sequences

Susan J. McLaren

Department of Geography, Kings College, Strand, London WC2R 2LS, UK

The interpretation of palaeodune sequences is an important component in palaeoenvironmental analyses. Studies of the diagenetic alteration of palaeodunes is one of the main ways of determining post-depositional environmental conditions. This paper questions the long-held and generally accepted ideas that cement types/fabrics are a ‘major method of recognising the original mineralogy of the cements and by inference their origin under marine, vadose or phreatic conditions’ (Arthur et al. 1982). A detailed study of last interglacial aeolianites from Mallorca, Tunisia and the Bahamas has shown that although many cement types may be characteristic of the meteoric vadose zone, none are unique. No single cement type is diagnostic of the vadose zone.