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GEOREF RECORD

Methods of calculating the axes of cylindrical folds; a review

D. M. Cruden
Methods of calculating the axes of cylindrical folds; a review
Geological Society of America Bulletin (1968) 79 (1): 143-148

Abstract

The graphical methods for determining the axes of cylindrical folds by use of pi or beta diagrams have inherent errors and have no means of detecting errors of measurement. These disadvantages are overcome by means of a mathematical method which requires repeated measurements at each outcrop in order to test whether uncertainty about orientation of the best-fit great circle can be reasonably accounted for by uncertainty in measurement of bedding. A population with a spherical-normal distribution is assumed and the calculation of the fold axis orientation makes use of matrices, involving eigenvectors and eigenvalues.


ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 79
Serial Issue: 1
Title: Methods of calculating the axes of cylindrical folds; a review
Author(s): Cruden, D. M.
Pages: 143-148
Published: 1968
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Accession Number: 1968-050487
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1968
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