Abstract Many workers accept a metamorphic model for orogenic gold ore formation, where gold-bearing aqueous-carbonic fluid is an inherent product of devolatilization across the greenschist-amphibolite boundary with majority deposits formed within seismogenic zone at depths 6–12 km. Fertile oceanic rocks that source and metal may be heated through varied tectonic scenarios affecting deforming u...

Abstract Equilibria between Ti oxides and silicate melt lead to isotope fractionation in terrestrial samples, with isotopically light heavy coexisting melt. However, while is mostly tetravalent around 10% of the overall trivalent at f O 2 relevant lunar magmatism (~ IW-1). The different valences could additionally influence stable during petrogenesis basalts an unknown extent. We performed expe...