A Caltech Library Service

A modified logarithmic probability graph for the interpretation of mechanical analyses of sediments

Otto, George H. (1939) A modified logarithmic probability graph for the interpretation of mechanical analyses of sediments. Journal of Sedimentary Petrology, 9 (2). pp. 62-76. ISSN 0022-4472. doi:10.1306/D4269044-2B26-11D7-8648000102C1865D.

PDF - Reprint
See Usage Policy.


Use this Persistent URL to link to this item:


Mechanical analyses of sediments are studied by comparison with other analyses. Both graphical and numerical methods of comparison are in use, each kind having its limitations. Two terms of a Gram-Charlier series, expressed in Krumbein's phi units, represent the data in many types of analyses, thus enabling them to be reduced to three numerical values or parameters. Graphical methods are given for recognizing such analyses, for obtaining the parameters, and for evaluating the extent to which they summarize the analytical information. A general procedure is outlined for systematic interpretation of mechanical analyses. The advantages of this method of interpretation are shown by considering in detail the information that can be deduced from the graphical study of a sieve analysis of a dune sand.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:© 1939 by the SEPM Society for Sedimentary Geology.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Hydrodynamics Laboratory18
Issue or Number:2
Record Number:CaltechAUTHORS:20140826-111105132
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48911
Deposited On:26 Aug 2014 19:52
Last Modified:10 Nov 2021 18:37

Repository Staff Only: item control page