Geophysical Journal | 2010 volume 32 1

Criterion of relative thickness and bending-hardness approach in description of folding forms of single layer

© Gonchar V.V.

Buckling-strength approach is proposed for outline correlations between thickness and foldlength of the competent layer in naturally occurring folds, which is based on elastoplastic description of buckling in which the tangential modulus is used for nonelastic stage of deformation. Assumption of contemporary folding of layer and destruction of medium is introduced, which allows to obtaina link between depth and foldlength with layer/medium property contrast counting. Valuation of prefold deformation is made, which is fined compareable with elastic-scale deformation of rocks. Refference thickness as a criterion of different modes of buckling against faulting-plastic mode deformation of competent layer is regarded.

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