Table of Contents
Textures and Microstructures
Volume 22, Issue 4, Pages 233-260

Deconvolution of Superposed Pole Figures by Discrete ODF Methods: Comparison of ADC and WIMV for Quartz and Calcite With Trigonal Crystal and Triclinic Specimen Symmetry

1Department of Geology and Geophysics, University of California, Berkeley, CA 94720, USA
2Institute of Metals Research, Polish Academy of Sciences, Reymonta 25, Krakow, Poland
3Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA

Received 11 February 1994; Accepted 22 March 1994

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Discrete methods of orientation distribution (ODF) analysis are applied to quartz and calcite rocks with trigonol crystal and triclinic sample symmetry. ODF’s are calculated from pole figures measured by neutron diffraction. A particular complication for quartz is the presence of overlapping peaks which can be separated with the WIMV or ADC algorithms based on diffraction intensity differences. Both methods provide similar solutions. Characteristic differences are discussed. By comparing ODF’s obtained from different data subsets (changing number and extent of pole figures) it is concluded that quantity and quality of data, as well as the texture type, have a crucial influence on resolution. It is demonstrated that discrete methods provide the possibility to obtain quantitative texture information from minimal experimental data.