Abstract

This article presents graphical methods for illustrating the dependence of fabrics on aspect ratio of grains. The method is especially useful for analyzing the massive amounts of fabric data generated by computerized fitting of ellipses to images of sedimentary grains. The methods were applied to grains in a thin section of sand taken from an experimental microdelta. The section was made vertical and parallel to the water current. The results show strongly developed fabrics that are influenced heavily by grain shape and size. The graphical representations help us grasp the influence of aspect ratio in its entirety. These results are notably not obtainable through standard analysis using rose diagrams unless a series of the diagrams are made for the intervals of aspect ratios.

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