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Predicted tortuosity of muds

Bernard P. Boudreau and Filip J. R. Meysman
Predicted tortuosity of muds
Geology (Boulder) (August 2006) 34 (8): 693-696


Tortuosity figures prominently in geochemical, hydrological, and geophysical calculations concerned with sediments, but it is a difficult parameter to measure. Past theoretical models for predicting the tortuosity from porosity data do not work with marine muds, and scientists and engineers have had to resort to entirely empirical models, without a mechanistic explanation and with unknown predictive power. We offer the first geometric model for the dependence of tortuosity on porosity in marine muds; the model is based on the tortuosity of separated layers of nonoverlapping disks. The fitted geometric constant in this model indicates that natural marine sediments act as if their fabric were made of disks with thickness:diameter ratios very close to 1:2, which indicates a blocklike fabric with respect to diffusion. The model was also applied to predict the tortuosity of a variety of sediments and soils not in the original database, and it provides a satisfactory prediction of the mean trend in these data.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 34
Serial Issue: 8
Title: Predicted tortuosity of muds
Affiliation: Dalhousie University, Department of Oceanography, Halifax, NS, Canada
Pages: 693-696
Published: 200608
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 25
Accession Number: 2006-062594
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Netherlands Institute of Ecology (NIOO-KNAW), NLD, Netherlands
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200635
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