Computer analysis of orientation data in structural geology

Loudon, T. Victor. 1964 Computer analysis of orientation data in structural geology. Northwestern University, 129pp. (Office of Naval Research Geography Branch ONR Task no. 389-135, Contract no. 1228(26) technical report) (Unpublished)

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Three-dimensional orientation data can be simplified by transforming them to refer to axes related to the symmetry of the distribution. Three uncorrelated scalar variates are generated by the transformation. Each of the scalar variates generally has direct geological significance. Each variate can be described by the usual statistical parameters. Thus, the orientation, tightness, asymmetry, shape and size can be measured statistically; first in the direction of greatest buckling; second, parallel to the fold axis. The degree to which a fold is cylindrical or conical in form can be estimated by a least-squares method. A Fortran IV program has been written to perform the computations. A consideration of the spatial variation of the parameters allows various types of folding to be discriminated quantitatively, and permits the testing of hypotheses of the origin of folding.

Item Type: Publication - Report
Programmes: BGS Programmes > Information Systems Development
Funders/Sponsors: US Office of Naval Research
Additional Information. Not used in RCUK Gateway to Research.: This report has been made possible through support and sponsorship by the United States Department of the Navy, Office of Xaval Research, under ONR Task Number 389-135, Contract Nom l228(26). Reproduction In whole or in part is permitted for any purpose by the United States Govemnt.
Additional Keywords: orientation analysis, fortran, structural geology, computing history
NORA Subject Terms: Earth Sciences
Computer Science
Date made live: 12 Sep 2012 10:14 +0 (UTC)

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