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Reading segmented grain-size curves

Published online by Cambridge University Press:  01 May 2009

E. K. Walton ,
W. E. Stephens  and
M. S. Shawa
E. K. Walton
Affiliation:
Department of Geology, University of St Andrews, St Andrews, Fife KY16 9ST, Scotland
W. E. Stephens
Affiliation:
Department of Geology, University of St Andrews, St Andrews, Fife KY16 9ST, Scotland
M. S. Shawa
Affiliation:
Geoconsultants, Calgary, Canada
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Summary

Cumulative curves of grain-size against frequency often show segmented shapes which have been interpreted as the result of combination of normally distributed populations. The origin of the segments is explored by the examination of two classes of models, truncation and mixing. Similar curves may be generated by a variety of models. The segments rarely reflect precisely the original populations. Simulation of the tri-segmented curves commonly ascribed to combinations of suspension, saltation and traction populations shows that the characteristics of the contributing populations are not consistent with these three modes of transportation.

Information

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 6 , November 1980 , pp. 517 - 524
Copyright
Copyright © Cambridge University Press 1980

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References

Bagnold, R. A. 1979. Acceptance of Sorby Medal. Sedimentology 26 159–60.Google Scholar
Clark, M. W. 1976. Some methods for statistical analysis of multimodal distributions and their application to grain-size data. J. Int. Ass. Math. Geol. 8 267–82.CrossRefGoogle Scholar
Dapples, E. C. 1975. Laws of distribution applied to sand grains. Mem. geol. Soc. Am. no. 142.Google Scholar
Fuller, A. O. 1961. Size characteristics of shallow marine sands from Cape of Good Hope, South Africa. J. sedim. Petrol. 31 256–61.CrossRefGoogle Scholar
Middleton, G. V. 1976. Hydraulic interpretation of sand size distributions. J. Geol. 84, 405–26.CrossRefGoogle Scholar
Moss, A. J. 1962. The physical nature of common sandy and pebbly deposits. Part 1. Am. J. Sci. 260 337–73.CrossRefGoogle Scholar
Moss, A. J. 1972. Bedload sediments. Sedimentology, 18 159–219.CrossRefGoogle Scholar
Sagoe, K. O. & Visher, G. S. 1977. Population breaks in grain-size distributions of sand — a theoretical model. J. sedim. Petrol. 476 285–310.Google Scholar
Schultz, D. M. 1975. Mass-size distributions — a review and a proposed new model. In Statistical Distribution in Scientific Work vol. 2, (ed Patil, G. P., Kotz, S. & Ord, J. K.), pp. 275–88. Dordrecht: D. Reidel.Google Scholar
Spencer, D. W. 1963. The interpretation of grain-size distribution curves of clastic sediments. J. sedim. Petrol. 33 180–90.Google Scholar
Tanner, W. F. 1964. Modification of sediment size distributions. J. sedim. Petrol. 34 156–64.Google Scholar
Visher, G. S. 1969. Grain size distributions and depositional processes. J. sedim. Petrol. 39 1074–1106.Google Scholar