Accession Number:

AD0731079

Title:

Development of Capabilities of Optical Diffraction Analysis for Quantitatively Comparing and Correlating Rock Fabrics and Fabric Changes

Descriptive Note:

Semiannual technical rept. no. 1, 1 Feb-1 Aug 1971

Corporate Author:

WISCONSIN UNIV-MILWAUKEE DEPT OF GEOLOGICAL SCIENCES

Personal Author(s):

Report Date:

1971-08-26

Pagination or Media Count:

37.0

Abstract:

Series of optical diffraction patterns two-dimensional Fourier amplitude transforms have been produced from photographs of rock specimens during successive stages of deformation to show spatial changes in fabric. Spatial filters and reference transforms for analysis of fabrics are being constructed from both artificial patterns and from transforms of real inputs. A method of mapping the transforms has been developed in which the input transparency is rotated about the optic axis to yield a spoke radial assembly of intensity profiles. Transforms have also been generated using partially coherent mercury vapor light as a source and a standard microscope plus auxiliary optics as the optical system.

Subject Categories:

  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE