Nomenclature and geometric classification of cleavage-transected folds

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doi: 10.1016/0191-8141(91)90127-5
Authors:Johnson, T. E.
Author Affiliations:Primary:
Univ. Cambridge, Dep. Earth Sci., Cambridge, United Kingdom
Volume Title:Journal of Structural Geology
Source:Journal of Structural Geology, 13(3), p.261-274. Publisher: Pergamon, Oxford-New York, International. ISSN: 0191-8141
Publication Date:1991
Note:In English. 69 refs.; illus. incl. block diags.
Summary:Terms and measures for describing real and theoretical three- dimensional cleavage-transected folds are reviewed and clarified. The geometrically possible range of cleavage-transected folds is explored. Reappraisal and extension of published measures allows study of geologically realistic asymmetrical folds. Scale-related description of cleavages and associated folds is formalized and sampling problems discussed. The plot comparing axial- with profile-plane fold transection by cleavage is used to classify transected folds in a geometrical manner. Plotted examples from Welsh asymmetric cleavage-transected folds of Acadian age show complex transection geometries. [J.M.H.]
Subjects:Asymmetric folds; Axial-plane structures; Cleavage; Cleavage folds; Folds; Geometry; Measurement; Nomenclature; Style; Theoretical studies
Abstract Numbers:92M/0905
Record ID:1991027344
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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