Abstract The southern Coast Mountain batholith was episodically active from Jurassic to Eocene time and experienced four distinct high magmatic flux events during that period. Similar episodicity has been recognized in arcs worldwide, yet the mechanism(s) driving such punctuated behavior are debated. This study uses zircon Hf O isotopes, with whole-rock mineral geochemistry, track spatiotempora...

The continental crust in the overriding plate of India-Asia collision zone southern Tibet is characterized by an overthickened layer felsic composition with underlying granulite-eclogite layer. A large data set indicates that this experienced magmatism from 245 to 10 Ma, as recorded Gangdese Batholith. Magmatism was punctuated flare-ups at 185−170, 90−75, and 55−45 Ma caused a combination exter...

The southern Ferkessédougou batholith in the center-west of Côte d’Ivoire is study area. geology this area includes granitoids (granodiorite, two-mica granite, biotite granite and muscovite granite) metasediment panels. Petrographic studies were coupled with geochemical analyzes on whole rock order to provide new elements structural evolution portion West African craton. data show that basement...

In continental arcs the extension of geothermal gradients derived from shallow crustal levels to depth predicts widespread melting at pressures that are inconsistent with seismic studies. Numerical models of low-pressure metamorphism in continental arcs suggest that these extrapolations are problematic because magmatic advection is the dominant mechanism of heat transport in these terranes rath...

Magmatic processes in the continental crust such as crustal convection, melt ascent, magma emplacement, and batholith formation are not well understood. We solve conservation equations for mass, momentum, energy two-phase flow of solid 2D, a thick heated from below by one or several heat pulses. A simplified binary melting model is incorporated. systematically vary (a) retention number, charact...