Crustal melting and continent uplift by mafic underplating at ...
2024年10月19日 · Our results suggest that crustal thickening by felsic melt and mafic underplate are important for plateau uplift in the EAP, Andes and Tibet. The presence of partial melt within the crust of...
Crustal melting in orogenic belts revealed by eclogite thermal
2022年8月9日 · Our results show that the temperature at ~30-km depth beneath the orogens reaches the solidus of wet granite and phengite (~940 K), therefore, the partial melting in the orogenic continental...
Crustal melting and granite magmatism: key issues
2001年4月1日 · Upper crustal granites are a necessary complement to melt-depleted granulites common in the lower crust, but the role of mafic magma in crustal melting remains uncertain. Plutons occur at various depths above and below the brittle-to-viscous transition in the crust and have a variety of 3-D shapes that may vary systematically with depth.
Melting conditions in the modern Tibetan crust since the Miocene - Nature
2018年8月29日 · Crustal melting produces granitic liquids and is a fundamental process by which the continents have differentiated into a depleted and dry lower layer and an upper enriched crust 1.
Crustal melting vs. fractionation of basaltic magmas: Part 1, …
2021年11月15日 · The crustal melting model (Fig. 2 b) revolves around partial melting in the (lower) crust to produce granitic melts. Inputs of heat and fluids lead eventually to the formation of an anatectic lower crust, that undergoes a range of tectonic, petrological and chemical processes that can be summarized in terms of melting reactions, segregation ...
Crustal melting and suprasolidus phase equilibria: From first ...
2021年10月1日 · In this article we review the current understanding of crustal melting (also known as anatexis) within the context of phase equilibria. Melting is the process of transforming a solid substance into a liquid, usually, but not exclusively, by the addition of heat.
A modern pulse of ultrafast exhumation and diachronous crustal melting ...
2022年8月5日 · We combine monazite petrochronology with thermal modeling to evaluate the relative roles of crustal melting, surface denudation, and tectonics in facilitating ultrafast exhumation of the Nanga Parb...
Crustal melting, ductile flow, and deformation in mountain belts: Cause ...
2013年12月1日 · The volume of crustal melting is controlled by the fertility of the dominantly pelitic protolith, the internal radiogenic heat flow, and the rates of crustal shortening and thickening. Deformation and melting are diachronous across mountain chains.
Slab-derived fluids as a crucial factor for the metallogeny
22 小时之前 · Zircon from the barren granites have Ti-in-zircon temperatures ranging from 626 to 789℃ (mean = 712 ± 48℃), which are much lower than the amphibole-dehydration melting reactions (850 to 900 °C; Wolf and Wyllie 1994), but concordant with the water-fluxed melting reactions under crustal pressures (< 800 °C; Weinberg and Hasalová 2015 ...
Critical metal enrichment in crustal melts: The role of …
2022年8月23日 · These distinctive trends appear to be independent of tectonic setting (i.e., continental collision and crustal thinning). Our data set highlights the importance of higher-temperature melting (>750 °C), in particular, biotite breakdown reactions, for the release of Li, Be, Sn, Cs, and W into crustal melts.