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Type: Journal article
Title: Quantifying particle aggregation in sediments
Author: Haberlah, David
McTainsh, Grant H.
Citation: Sedimentology, 2011; 58(5):1208-1216
Publisher: Blackwell Publishing Ltd
Issue Date: 2011
ISSN: 0037-0746
School/Discipline: School of Earth and Environmental Sciences
Statement of
David Haberlah and Grant H. McTainsh
Abstract: Sediments often occur as non-normal size distributions composed of discrete, partially aggregated particle populations. These populations reflect provenance, dispersal pathways and their depositional environments. Recent experimental laboratory studies describing mud flocculation in turbulent marine systems prompted this investigation of the potential of aggregates to record size-sensitive transport dynamics in a terrestrial fluvial system. Here, sediment-size distributions in their natural condition of particle–aggregate mixtures are analysed by parametric statistics. A practical and freely available decompositional approach is outlined and field tested, which allows sediment to be viewed in both its conventional particulate form and as its naturally occurring mixture of transport-stable aggregates and elementary particles. From a sequence of upward-fining slack water couplets in the Flinders Ranges, South Australia, it is demonstrated that the characteristics, provenance and depositional history of fine-grained sediments consisting of particle-aggregate mixtures can best be understood fully by quantifying aggregation.
Keywords: Aggregation; decomposition; Flinders Ranges; mud; parametric; particle-size analysis; sediment-size analysis; silts
Rights: Copyright 2011 The Authors. Journal compilation. © 1999–2011 John Wiley & Sons, Inc. All Rights Reserved.
DOI: 10.1111/j.1365-3091.2010.01201.x
Appears in Collections:Earth and Environmental Sciences publications

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