نتایج جستجو برای: orogenic
تعداد نتایج: 1668 فیلتر نتایج به سال:
Abstract. Conceptual models of orogenic accretionary prisms assume that peak temperatures (Tmax?) increase towards the internal domains as crustal rocks are accreted from lower to upper plate. However, recognition pre-orogenic heating events in mountain belts questions magnitude thermal overprint during nappe stacking. Using Raman spectroscopy on carbonaceous material (RSCM) calculate Tmax?, we...
Interference between orogenic systems and deformation phases within them may lead to reworking reactivation of previous structures. The eastern sector the Spanish-Portuguese Central System holds evidence two systems, Variscan Alpine, plus a stage Permian extension. We perform an integrated structural analysis identify processes throughout geological record. record starts with crustal thickening...
[1] Mountain building at convergent margins requires tectonic forces that can overcome frictional resistance along large-scale thrust faults and support the gravitational potential energy stored within the thickened crust of the orogen. A general, dynamic model for this process is still lacking. Here we propose that mountain belts can be classified between two end-members. First, those of “slab...
Erosion, sediment production, and routing on a tectonically active continental margin reflect both tectonic and climatic processes; partitioning the relative importance of these processes remains controversial. Gulf of Alaska contains a preserved sedimentary record of the Yakutat Terrane collision with North America. Because tectonic convergence in the coastal St. Elias orogen has been roughly ...
dehbid mylonite nappes associated with the tutak gneiss dome as the zagros hinterland involved-basement window in the zagros orogenic belt has significant components of dextral sense of shear along the mylonite nappes and are related to the high proportion of simple shear relative to pure shear deformation. kinematic vorticity analysis (wk) was made in order to determination of relative amounts...
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