The interactions between the geophysical processes and geodynamics of the lithosphere play a crucial role in the geologic structure of the Earth’s crust. The Bangui magnetic anomaly is a notable feature in the lithospheric structure of the Central African Republic (CAR) resulting from a complex tectonic evolution. This study reports on the coherenc...
Published in Frontiers in Earth Science
Plate tectonic reconstructions of three of the best-defined Cenozoic subduction initiation (SI) events in the western Pacific, Izu-Bonin-Mariana, Vanuatu, and Puysegur subduction zones, show substantial components of strike-slip motion before and during the subduction initiation. Using computational models, we show that strike-slip motion has a lar...
Published in Frontiers in Earth Science
The Karakoram Terrane (KT) represents the southern margin of the Eurasian Plate, mainly consisting of Late Jurassic-Early Cretaceous subduction-related granites and post-collisional Miocene leucogranites, which intrude the Late Neo-Proterozoic basement. We report for the first time the existence of the Cryogenian KT basement as recorded from the ge...
Published in Frontiers in Earth Science
Published in Frontiers in Earth Science
The subduction of positively buoyant features has been implicated in the development of flat and shallow dipping slabs, the formation of cusps in trench geometry, and the cessation of associated arc magmatism. However, how such buoyant anomalies influence subduction dynamics to produce these different tectonic expressions remains debated. In this p...
Published in Frontiers in Earth Science
Since its formation, the Earth has cooled from molten magma to the present layered structure. The liquid and molten substance in the interior of the Earth continuously solidifies, radiating heat to the outer space and causing changes in the pressure and density inside the Earth. Constrained by the rigid lithosphere, the change in density decreases ...
Published in Proceedings of the National Academy of Sciences of the United States of America
With plate tectonics operating on Earth, the preservation potential for mantle reservoirs from the Hadean Eon (>4.0 Ga) has been regarded as very small. The quest for such early remnants has been spurred by the observation that many Archean rocks exhibit excesses of 182W, the decay product of short-lived 182Hf. However, it remains speculative wheth...
The subduction of positively buoyant features has been implicated in the development of flat and shallow dipping slabs, the formation of cusps in trench geometry, and the cessation of associated arc magmatism. However, how such buoyant anomalies influence subduction dynamics to produce these different tectonic expressions remains debated. In this p...
Published in Petrology
Plate-tectonic paleogeodynamic setting of volcanic massive sulfide-bearing complexes of the Magnitogorsk island-arc megazone was reonstructed based on petrological-geochemical study and available geophysical data. The correlation between La/Yb ratio, Th, Yb, TiO2, and Zr concentrations in the basalts of ore regions, and ore volumes (Cu + Zn, in kt)...
Published in Doklady Earth Sciences
AbstractThe popular rotational hypothesis of the formation and evolution of the main structures of the Eastern Arctic lithosphere during the Late Jurassic–Early Cretaceous, in particular, the opening of the Canadian Basin, the closure of the Angayucham and South Anyui paleoceans, and the formation of collision structures during the movement of the ...
