Abstract Most known porphyry Cu deposits formed in the Phanerozoic and are exclusively associated with moderately oxidized, sulfur-rich, hydrous arc-related magmas derived from partial melting of asthenospheric mantle metasomatized by slab-derived fluids. Yet, whether similar metallogenic processes also operated Precambrian remains obscure. Here we address issue investigating origin, f O 2 , S ...

The lower structural levels of the Variscan orogen exposed in Eastern Pyrenees reveal three genetically associated magmatic suites: (i) a batholitic sized calc-alkaline granitoid (Sant Llorenç – La Jonquera, SL–LJ); (ii) minor mafic intrusions with local ultramafic cumulates (Ceret and Mas Claret complexes); (iii) peraluminous leucogranite bodies. These suites were emplaced syn- to post-collisi...

Mantle-derived magmatism provides important insights for understanding the mechanism of lithospheric thinning. Here we report results an integrated geochronological and geochemical study Late Triassic mafic dykes in Eastern Hebei, northern North China Craton. In situ zircon U-Pb dating shows that were emplaced between 238 223 Ma; coeval Gaojiadian Mataizi intruded Precambrian basement at 238–23...

Recycling of Fe-rich materials through subduction may affect the element budgets and redox properties mantle, thus influencing differentiation trends mineralization types mantle-derived magmas. However, effects different recycled on mantle are dependent their lithologies, which still poorly constrained. Stable Fe isotopes can act as useful tracers for distinguishing among imprints be documented...

Abstract The Payenia region of Argentina (34.5–38°S) is a large Pliocene‐Quaternary volcanic province basaltic compositions in the Andean Cordillera foothills representing northernmost extent back‐arc volcanism Southern Volcanic Zone (SVZ). Although chemical diversity basalts has been characterized previously, processes and sources responsible for such variation remain controversial. Here, we r...

Oceanic basalts, such as mid-ocean ridge basalts (MORB) and ocean island basalts (OIB), are characterized by large isotopic and trace element variability that is hard to reconcile with partial melting of a peridotitic mantle alone. Their variability has been attributed to the presence of heterogeneities within the mantle, such as recycled crust, metasomatized material or outer core contribution...