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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract


Journal of Sedimentary Petrology
Vol. 28 (1958)No. 3. (September), Pages 372-375

The Zig-Zag Nature of Type I and Type IV Curves

William F. Tanner

ABSTRACT

Many distributions of sedimentologic (and other geologic) data are non-Gaussian. Of nine examples studied in detail, seven are Pearson's Type IV, and two are Pearson's Type I. Each plots as a zig-zag line composed of two or more straight-line segments on probability paper. The zig-zag pattern appears to be caused by a deficiency of particles of certain sizes. This is perhaps a general, rather than a local, condition, as has been pointed out by many workers.


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