• finite difference
• modeling
• along-strike difference
• Himalayan range
• numerical modeling

In this Master's degree work, the results of one will be presented
experimental study of finite difference numerical modeling of systems
orogenic/accretionary prisms. The project aimed to investigate
the geometric-kinematic development of structures and associations of structures in orogenic prisms. In particular, the architectural variability of orogens along-strike as a function of the mechanical and rheological properties of the crust involved in the convergence process, its structural inheritance and of thermal ones. A common feature of many mountain ranges is represented by the dimensional variability and deformation style that it can be encountered along the direction to the front of the system. Examples are multiple and observable in ancient orogenic systems eg. the Caledonian chain (Klein et al., 1999) and in the Appalachians (Malo et al., 1995), and those active e.g. the Apennine chain (Pace et al., 2022), the Alps (Schmid et al., 2017), the Andes (Spikings et al., 2001; Likerman et al., 2013) and the orogenic system of Taiwan (Chen et al., 2003; Lin and Watts, 2002). Even the Himalayan range although considered in the first order as characterized by a structuring long strike cylinder with tectonic units traceable for hundreds of kilometers (Dhital, 2015; Searle and lama, 2017) in its external portions, it shows a significant variation of structural and parallel styles of the general architecture of the system starting from its dimensional development (Yin, 2006; Harvey et al., 2015). Comparative analysis of 2 transects (Webb et al., 2011; Murphy, 2007) in the western portion of the chain, it represents the case study and comparison of the results of similar modeling performed. Among the different factors that have been documented in the literature as significant in the control of the structuring in the outer portions of the chains I most commonly mentioned are: the lithological characteristics of the sediments, the morphology of the basement in the foreland basin, the mechanical properties of the multilayer affected by you deformation, the rheology of the lithosphere, and finally the strain rates (slip rate) of the convergent system. In this thesis work the properties will be tested frictional levels of detachment, their geometry, and the number inside of the crustal multilayer and its structural inheritance represented in the structures interior of the multilayer in deformation and the presence/absence of faults at its core internal.