Buckling of the oceanic lithosphere from geophysical data and experiments

Buckling of the oceanic lithosphere from geophysical data and experiments Two major hypotheses have been advanced for the formation of the long wavelength (100–300 km) undulations of oceanic basement and overlying sediments developed in the central Indian Ocean basin: whole layer folding (buckling) and local thickening (inverse boudinage). Using appropriately scaled two‐layer analogue models for the oceanic lithosphere comprising a brittle layer above a ductile layer, we show that buckling of the entire brittle layer is likely to be the mode of deformation. However, the lithosphere‐asthenosphere boundary remains undisturbed. We find a relationship between the thickness of the brittle layer and the wavelength of folding such that the wavelength is 7 times the brittle layer thickness. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tectonics Wiley

Buckling of the oceanic lithosphere from geophysical data and experiments

Tectonics, Volume 11 (3) – Jun 1, 1992

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Publisher
Wiley
Copyright
Copyright © 1992 by the American Geophysical Union.
ISSN
0278-7407
eISSN
1944-9194
DOI
10.1029/91TC02908
Publisher site
See Article on Publisher Site

Abstract

Two major hypotheses have been advanced for the formation of the long wavelength (100–300 km) undulations of oceanic basement and overlying sediments developed in the central Indian Ocean basin: whole layer folding (buckling) and local thickening (inverse boudinage). Using appropriately scaled two‐layer analogue models for the oceanic lithosphere comprising a brittle layer above a ductile layer, we show that buckling of the entire brittle layer is likely to be the mode of deformation. However, the lithosphere‐asthenosphere boundary remains undisturbed. We find a relationship between the thickness of the brittle layer and the wavelength of folding such that the wavelength is 7 times the brittle layer thickness.

Journal

TectonicsWiley

Published: Jun 1, 1992

References

  • Observations of flexure and the rheology of the Oceanic lithosphere
    Bodine, Bodine; Steckler, Steckler; Watts, Watts
  • Seasat‐derived gravity constraints on stress and deformation in the northeastern Indian Ocean
    Stein, Stein; Cloetingh, Cloetingh; Wortel, Wortel

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