Changes in sediment flux to continental margins are commonly interpreted terms of tectonic growth topography or climatic change. Here, we show that variations yield from orogenic systems, previously considered as resulting climate change, drainage reorganisation mantle processes can be explained by intrinsic mechanisms mountain belt/foreland basin systems naturally evolving during post-orogenic...

Ophiolites of the Alpine belt derive from closure Mesozoic Tethys Ocean that was interposed between palaeo-Europe and palaeo-Adria continental plates. The orogeny has intensely reworked oceanic rocks into metaophiolites with various metamorphic imprints. In Western Alps, continental-derived units are distributed within two paired bands: An inner band where subduction-related high-pressure (HP) ...

Department of Obstetric and Gynaecology, Himalayan Institute of Medical Science, Dehradun, Pin code248140 Associate Professor, Department of Obstetric and Gynaecology, Himalayan Institute of Medical Science, Dehradun Pin code248140 Associate Professor, Department of Microbiology, Himalayan Institute of Medical Science, Dehradun-Pin code248140 PG resident , Department of Obstetric and Gynaecolog...

The Caledonian orogenic belt of northern Britain hosts some significant quartz vein-hosted gold deposits. However, as in orogenic belts worldwide, the relationship between gold mineralization and regional tectonics, magmatism, and metamorphism is a matter of debate. This is primarily due to the absence of precise temporal constraints for the mineralization. Here we report high-precision 40Ar/39...

The Ghohroud granitoids (GG), containing mafic microgranular enclaves (MMEs) are located in the central part of Urumieh-Dokhtar Magmatic Arc (UDMA) Iran. They associated with subduction-related magmatism Alpine-Himalayan orogenic belt. GG comprised a variety intermediate and felsic rocks, including tonalite, granodiorite, granite, diorite porphyry monzodiorite. MMEs gabbroic tonalite compositio...

The application of big data is great significance to the quantitative study on provenance. In this paper, taking bauxite in Yanlong area, western Henan, as an example, detrital zircon U-Pb age obtained by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) are used results show that Caledonian and Sibao Jinning zircons from North Qinling Orogenic Belt (NQOB). contrast, Lvlia...

About 5400 cal yr BP, a large landslide formed a N400-m-tall dam in the upper Marsyandi River, central Nepal. The resulting lacustrine and deltaic deposits stretched N7 km upstream, reaching a thickness of 120 m. C dating of 7 wood fragments reveals that the aggradation and subsequent incision occurred remarkably quickly (∼500 yr). Reconstructed volumes of lacustrine (∼0.16 km) and deltaic (∼0....

Extreme orogenic convective storms in southeastern South America are divided into three categories: storms with deep convective cores, storms with wide convective cores, and storms containing broad stratiform regions. Data from the Tropical Rainfall Measuring Mission satellite’s Precipitation Radar show that storms with wide convective cores are the most frequent, tending to originate near the ...