Indentation of a continent with a built-in thickness change: experiment and nature
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- 作者：Sokoutis ; Dimitrios ; Bonini ; Marco ; Medvedev ; Sergei ; Boccaletti ; Mario ; Talbot ; Christopher J. ; et. al.
- 关键词：Analogue modelling ; Extended Thin Sheet Approximation (ETSA) ; Indentation tectonics ; Lateral escape ; Oblique orogens ; Transversal crustal thickness variation
- 刊名：Tectonophysics
- 出版年：2000
- 出版时间：May 20, 2000
- 年：2000
- 卷：320
- 期：3-4
- 页码：243-270
- 全文大小：967 K
文摘
Orogens oblique to the direction of plate convergence are currently attributed to obliquity between the margins of one or both of the sutured continents to their direction convergence. We use a single analogue experiment and natural examples to illustrate a potential additional factor: variations in strength of the indented continent at a high angle to the convergence direction. The wavelengths of structures in laterally shortened lithosphere depend on the strength of the most competent layers. Lateral variations in crustal thickness must therefore lead to structures oblique to any applied lateral compression.