Early sulfide saturation in arc volcanic rocks of southeast China: Implications for the formation of co-magmatic porphyry–epithermal Cu–Au deposits
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.04.014
Abstract: Abstract It is widely considered that arc magmas are highly oxidized, and can thus dissolve a large amount of sulfur, thereby preventing significant sulfide saturation prior to fluid saturation. Therefore, chalcophile metals (e.g., Cu and… read more here.
Keywords: arc magmas; arc; porphyry epithermal; saturation ... See more keywords
Rhenium enrichment in the northwest Pacific arc
Sign Up to like & getrecommendations! Published in 2019 at "Ore Geology Reviews"
DOI: 10.1016/j.oregeorev.2019.103176
Abstract: Abstract Rhenium (Re) is one of the least abundant elements in the silicate Earth. However, independent rhenium sulfide was reported in the Usu and Kudryavy volcanos, namely rheniite (ReS2, 74.5 wt% of Re). This raises questions… read more here.
Keywords: arc magmas; arc; northwest pacific; subduction ... See more keywords
Oxidising agents in sub-arc mantle melts link slab devolatilisation and arc magmas
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-05804-2
Abstract: Subduction zone magmas are more oxidised on eruption than those at mid-ocean ridges. This is attributed either to oxidising components, derived from subducted lithosphere (slab) and added to the mantle wedge, or to oxidation processes… read more here.
Keywords: arc magmas; arc mantle; sub arc;
Arc magmas oxidised by water dissociation and hydrogen incorporation in orthopyroxene
Sign Up to like & getrecommendations! Published in 2019 at "Nature geoscience"
DOI: 10.1038/s41561-019-0411-x
Abstract: Elevated H2O concentrations and oxygen fugacities are two fundamental properties that distinguish magmas formed in subduction zones from new crust generated at mid-ocean ridges. However, the mechanism of magma oxidation and how it relates to… read more here.
Keywords: arc magmas; magmas; oxidised water; magmas oxidised ... See more keywords
Oxidized primary arc magmas: Constraints from Cu/Zr systematics in global arc volcanics
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.abk0718
Abstract: Arc volcanics are more oxidized than mid-ocean ridge basalts (MORB), but it is debated whether this is a mantle feature or a result of magmatic evolution. Copper, a sulfur-loving element, has been used to trace… read more here.
Keywords: arc; arc magmas; systematics; mantle ... See more keywords