Buckling of the oceanic lithosphere from geophysical data and experiments
Buckling of the oceanic lithosphere from geophysical data and experiments
复制标题
来自地球物理数据和实验的海洋岩石圈屈曲
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
P. Davy
中科院分区：
文献类型：
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作者：
J. Bull;J. Martinod;P. Davy
对于中印度洋海盆发育的海洋基底和上覆沉积物的长波长（100-300 km）起伏的形成，提出了两种主要假说：全层褶皱（屈曲）和局部增厚（逆石香肠）。使用适当比例的两层模拟模型的海洋岩石圈包括一个脆性层以上的韧性层，我们表明，整个脆性层的屈曲很可能是变形的模式。然而，岩石圈-软流圈边界保持原状。我们发现脆性层的厚度和折叠的波长之间的关系，使得波长是脆性层厚度的7倍。
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.