Gerbault, Muriel and Burov, Eugenii B. and Poliakov, Alexei N.B. and Daignières, Marc Do faults trigger folding in the lithosphere? (1999) Geophysical Research Letters, 26 (2). 271-274. ISSN 0094-8276
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(Document in English)
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Official URL: https://doi.org/10.1029/1998GL900293
Abstract
A number of observations reveal large periodic undulations within the oceanic and continental lithospheres. The question if these observations are the result of large- scale compressive instabilities, i.e. buckling, remains open. In this study, we support the buckling hypothesis by di- rect numerical modeling. We compare our results with the data on three most proeminent cases of the oceanic and continental folding-like deformation (Indian Ocean, Western Gobi (Central Asia) and Central Australia). We demon- strate that under reasonable tectonic stresses, folds can de- velop from brittle faults cutting through the brittle parts of a lithosphere. The predicted wavelengths and finite growth rates are in agreement with observations. We also show that within a continental lithosphere with thermal age greater than 400 My, either a bi-harmonic mode (two superimposed wavelengths, crustal and mantle one) or a coupled mode (mono-layer deformation) of inelastic folding can develop, depending on the strength and thickness of the lower crust.
Item Type: | Article |
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HAL Id: | hal-03157577 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Bureau de Recherches Géologiques et Minières - BRGM (FRANCE) Other partners > Université de Montpellier (FRANCE) |
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Deposited On: | 03 Mar 2021 10:51 |
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