A review of lamellae

Lamellae, bands of increased silicate clay and iron, are globally ubiquitous in Quaternary sands and have been studied for almost a century. However, their study is hampered by confusion in the literature; a researcher who only reads a single case study may be misled into thinking that these features form in only one way. This paper reviews recent research on these confusing features outlining three general formation pathways: pedogenic, petrogenic, and pedo-petrogenic, and within these numerous specific evolutions. The review will be useful to geomorphologists that have lamellae in their field areas but whose research is focused elsewhere and those interested in determining local lamellae genesis. It will help Quaternary scientists understand that lamellae are confusing features and should not be assumed to have climatic significance or indicate buried soils when encountered at depth. (C) 2000 Elsevier Science B.V. All rights reserved.