نتایج جستجو برای: orogenic regions
تعداد نتایج: 354199 فیلتر نتایج به سال:
Abstract. The dynamics of growing collisional orogens are mainly controlled by buoyancy and shear forces. However, the relative importance these forces, their temporal evolution impact on tectonic style orogenic wedges remain elusive. Here, we quantify forces during orogeny investigate wedge formation exhumation crustal rocks. We leverage two-dimensional petrological–thermomechanical numerical ...
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...
Abstract It is widely accepted that tectonics generally enhances river incision. However, why rivers have not incised further into orogenic plateaus to destroy terrains over long-time scales remains ambiguous. Here we hypothesize the diverse nature of regional could impeded erosion, taking Yarlung River in Tibetan Plateau as a case. We constrain incision history and effect tectonic rift on fluv...
[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 ...
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