Graphical representation of particle shape using triangular diagrams : an excel spreadsheet method

Auteurs :
GRAHAM, D.J.
MIDGLEY, N.G.

Description :
Analysis of the shape of sedimentary particles can provide information about their transport history and aid facies differenciation and the characterization of depositional environments. Triangular diagrams, emplying ratios of the 3 orthogonal particle axes, have been advocated as the most appropriate method for unbiased predentation of primary particle shape data. A speadsheet method for the production of these diagrams is described. Clast data-sets from a range of environments are presented using this method. An alternative use of the spreadsheet for the presentation of sedimentary fabric shape is suggested.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2000, vol. 25, n°. 13, p. 1473-1477, Collation : Illustration, Références bibliographiques : 22 ref.

Date :
2000

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley