A DEFORMATION APPARATUS FOR THREE-DIMENSIONAL COAXIAL DEFORMATION AND ITS APPLICATION TO RHEOLOGICALLY STRATIFIED ANALOGUE MATERIAL
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dc.contributor.author | Zulauf G. | |
dc.contributor.author | Zulauf J. | |
dc.contributor.author | Hastreiter P. | |
dc.contributor.author | Tomandl B. | |
dc.date.accessioned | 2022-01-20T02:30:05Z | |
dc.date.available | 2022-01-20T02:30:05Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=1264225 | |
dc.identifier.citation | Journal of Structural Geology, 2003, 25, 3, 469-480 | |
dc.identifier.issn | 0191-8141 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34424 | |
dc.description.abstract | A new apparatus is described that supports all types of three-dimensional coaxial deformation from pure constriction to pure flattening. Up to 78% shortening is possible at strain rates ranging from 4x10-6 to 1x10-2s-1. The apparatus has been used to study the influence of the deformation regime on the geometry of a deforming stiff layer embedded in a weak matrix. Layer and matrix consist of plasticine, the apparent viscosity η and stress exponent n of which vary from 2x106 to 2x107Pas and 6-9, respectively. First results suggest a considerable influence of the deformation regime on the geometry of the deformed layer including its thickness. If the viscosity ratio between layer and matrix is small (η2/η1#5), folding is restricted to the flattening and plane strain regime, the latter if the layer is initially oriented perpendicular to the long axis X of the finite strain ellipsoid. If the layer is oriented perpendicular to the intermediate Y axis under plane and constrictional strain, low viscosity ratios result in boudinage, but folding is hardly developed. However, simultaneous growth of folds and boudins is possible under pure constriction at a viscosity ratio of 10. Three-dimensional images, based on computer tomography, suggest a strong interaction between such coeval folds and boudins, resulting in characteristic deformation patterns that should not occur if both structures form in sequence during polyphase deformation. | |
dc.subject | DEFORMATION APPARATUS | |
dc.subject | THREE-DIMENSIONAL COAXIAL DEFORMATION | |
dc.subject | RHEOLOGICALLY STRATIFIED ANALOGUE MATERIAL | |
dc.title | A DEFORMATION APPARATUS FOR THREE-DIMENSIONAL COAXIAL DEFORMATION AND ITS APPLICATION TO RHEOLOGICALLY STRATIFIED ANALOGUE MATERIAL | |
dc.type | Статья |
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