At subduction zones, crustal material is recycled back into the mantle. A certain proportion, however, is returned to the overriding plate via magmatism. The magmas show a characteristic range of compositions that have been explained by three-component mixing in their source regions: hydrous fluids derived from subducted altered oceanic crust and components derived from the thin sedimentary ven...

SCIENCE SUMMARY Site U1309 (Prospectus Site AMFW-01A) is located on the central dome of Atlantis Massif, 15 km west of the median valley axis of the Mid-Atlantic Ridge, where the seafloor coincides with a corrugated detachment fault surface. Site U1309 comprises eight holes drilled within 2 km of one another and along a spreading-parallel corridor (see Expedition 304 Site U1309 Site Summary). H...

Seismic tomography models of the three-dimensional upper mantle velocity structure of the Mediterranean-Carpathian region provide a better understanding of the lithospheric processes governing its geodynamical evolution. Slab detachment, in particular lateral migration of this process along the plate boundary, is a key element in the lithospheric dynamics of the region during the last 20 to 30 ...

Seismic hazard in continental rifts varies as a function of strain accommodation by tectonic or magmatic processes. The nature of faulting in the Sevier Desert, located in eastern Basin and Range of central Utah, and how this faulting relates to the Sevier Desert Detachment low-angle normal fault, have been debated for nearly four decades. Here, we show that the geodetic signal of extension acr...

the aligoodarz granitoid occurs in sanandaj-sirjan zone (ssz), western iran. tonalite, granodiorite and granite are the main rock types cropping out in the area. comparison of aligoodarz granitoid with dehno and boroujerd granitoids reveals several similarities in their chemical characteristics. thus, the above mentioned granitoids can be assigned as a co-genetic magmatic suite, in which pluton...

Unlike the other terrestrial planets, Earth has a substantial silica-rich continental crust with bulk andesitic composition. A small number of meteorites compositions have been identified that are thought to be products partial melting chondritic protoliths, mode petrogenesis distinct from Earth’s crust. Here we show, using geochemical analyses, unlike known meteorites, Erg Chech 002 strongly f...

Abstract The Wrangell Arc in Alaska (USA) and adjacent volcanic fields the Yukon provide a long-term record of interrelations between flat-slab subduction Yakutat microplate, strike-slip translation along Denali–Totschunda–Duke River fault system, magmatism focused within proximal to Cretaceous suture zone. Detrital zircon (DZ) U-Pb (n = 2640) lithic (DARL) 40Ar/39Ar dates 2771) from 30 modern ...