Physical controls on dynamics of spontaneously retreating subduction zones ...
Retreating subduction zones are geological features present all over the world, such as Scotia region, between South America and Antarctica or, according to some studies, in the Caribbean. Retreating subduction zones consist in a plate having a downward motion towards the Earth’s mantle, which retre...
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| Format: | Thesis |
| Language: | English |
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ETH Zurich
2020
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| Online Access: | https://dx.doi.org/10.3929/ethz-b-000465082 http://hdl.handle.net/20.500.11850/465082 |
| Summary: | Retreating subduction zones are geological features present all over the world, such as Scotia region, between South America and Antarctica or, according to some studies, in the Caribbean. Retreating subduction zones consist in a plate having a downward motion towards the Earth’s mantle, which retreats due to slab pull. They are expressed by curved trenches at the surface. Subduction zones are at the interface between our planet’s surface and its mantle and deep structures. What happens there is influenced by deep mechanisms and the properties of the mantle, but also by what is happening at the surface, such as loading and unloading of the trench, the subducting and overriding plate, or the physical properties of the subducted material. In this work, I am interested in understanding how these systems move around, what influences their course both in depth and at the surface. To address this research question, I need to take into account many characteristics, from the composition and mechanical evolution of ... |
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