Development of Capabilities of Optical Diffraction Analysis for Quantitatively Comparing and Correlating Rock Fabrics and Fabric Changes
Technical rept. no. 2 (Final), 14 Jan 1972-2 May 1973
WISCONSIN UNIV-MILWAUKEE DEPT OF GEOLOGICAL SCIENCES
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Standard uniaxial loading of rock specimens and cantilever and third- part loading of rock slices cemented to aluminum beams have provided input data. Fabrics of rock specimens undergoing deformation have been recorded photographically in white light, in ultra-violet illumination after treatment of specimens with fluorescent dye penetrants, and with acetate peels. These fabric pictures have been converted to their two-dimensional Fourier amplitude transforms by optical diffraction. Changes in the transforms reflect spatial changes in the fabrics with loading. Transforms have been produced from petrographic thin sections using a modified laboratory microscope and partially coherent light this technique promises wider application of optical diffraction analysis in petrofabric studies. An extensive collection of reference inputs and their transforms has been prepared.
- Geology, Geochemistry and Mineralogy