“…They can be produced by melting of subcontinental lithospheric mantle, depleted MORB (middle oceanic ridge basalt)-type mantle, plumerelated enriched mantle, or subduction component-enriched lithospheric mantle (e.g., Hall and Hughes, 1987;Piccardo and Guarnieri, 2011;Pirajno, 2004;Torsvik et al, 1998). Their formation is commonly linked to dynamic processes such as asthenosphere mantle upwelling due to slab break-off (Xie et al, 2012), a spreading ridge or continental rifting (Andronicos et al, 2008;Olson, 1992), the ascent of a deep-seated mantle plume (Torsvik et al, 1998), subduction-metasomatism of continental lithospheric mantle (Hall and Hughes, 1987) and slab roll-back or ridge subduction (Sisson et al, 2003). The compositions of early-crystallized minerals (e.g., olivine, hypersthene and clinopyroxene) in norites likely record important information regarding the temperature conditions and magmatic evolution of their parental magmas (e.g., Beard, 1986).…”