Abstract
The pore spaces and particles comprising (a) 2 artificial sands consisting of uniform spherical particles and (b) 4 natural shell gravels from Church Island, Menai Strait, N. Wales, were observed directly in thin sections. Porosity and granulometry measurements made visually agreed with those obtained by traditional methods. Pore-size distributions could also be measured and always showed greater dispersion than particle-size distributions. In the almost monometric sands, the mean pore diameter was 30 to 40% of the mean particle diameter, in agreement with the Koseny-Carmen equation. In the polymorphic shell gravels, the mean pore size was only 15 to 20% of the mean particle size, and diminished with increased content of fine particles. A theoretical treatment is given, based on a model of interconnecting dilations and constrictions, to allow the proportion of total void space available to an organism of given diameter to be predicted.
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Graton, L. C. and [H. J. Fraser: Systematic packing of spheres with particular relation to porosity and permeability. J. Geol. 43 (1), 785–909 (1935).
Krumbein, W. C.: Thin section mechanical analysis. J. Geol. 43, 482–496 (1935).
Orr, C. and [J. M. Dallavalle: Fine particle measurement, 353 pp. New York: McMillan 1959.
Swanson, C. L. W. and [J. B. Peterson: Differences in the microstructure of profiles of the Marshall and the Shelby silt loam. Proc. Soil. Sci. Soc. Am. 5, 297–303 (1940).
Williams, R.: A technique for measuring the interstitial voids of a sediment based on epoxy resin impregnation. Proc. 1st Confer. Meiofauna. Smithson. Contr. Zool. 76, (1971). (In press).
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Communicated by J. H. S. Blaxter, Oban
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Crisp, D.J., Williams, R. Direct measurement of pore-size distribution on artificial and natural deposits and prediction of pore space accessible to interstitial organisms. Marine Biology 10, 214–226 (1971). https://doi.org/10.1007/BF00352810
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DOI: https://doi.org/10.1007/BF00352810