Zn/Fe systematics in mafic and ultramafic systems: Implications for detecting major element heterogeneities in the Earth’s mantle

Melting during late-stage rifting in Afar is hot and deep

“…3; ref. 31) indicate an origin for the observed basalts predominantly by peridotite melting. Equilibrium P and T conditions for the lavas and mantle peridotite, shown in Fig.…”

Petrogenesis of Late Cenozoic basalts from North Hainan Island: Constraints from melt inclusions and their host olivines

“…Han et al (2009), Zou andFan (2010) and Wang et al (2012). Field for peridotite is from Le Roux et al (2010) and MORB is from PETDB database (http://petdb.ldeo.columbia.edu/petdb). Note that the Hainan basalts have higher Zn/Fe, Zn/Mn, and Fe/Mn than MORB and peridotites, which probably indicates the involvement of pyroxenite in their mantle source.…”

“…According to high-pressure melting experiments on hornblendite, clinopyroxene hornblendite, and hornblendite plus peridotite hybrids, Pilet et al (2008Pilet et al ( , 2011 showed that partial melts of metasomatic hornblendite veins can reproduce key major and trace element characteristics of oceanic and continental alkaline magmas. Ratios of moderately incompatible trace elements and major elements, such as Fe/Mn (Humayun et al, 2004;Liu et al, 2008;Qin and Humayun, 2008;Le Roux et al, 2010, 2011, Zn/Fe and Zn/Mn (Le Roux et al, 2010Roux et al, , 2011, can be good indicators of the lithology and residual mineral assemblages of the magma source. Le Roux et al (2010Roux et al ( , 2011 indicate that Zn/Fe, Fe/Mn and Zn/Mn do not fractionate between olivine, orthopyroxene and partial melts, but are strongly fractionated when garnet or clinopyroxene are the dominant phases involved during melting or crystallization.…”

“…Ratios of moderately incompatible trace elements and major elements, such as Fe/Mn (Humayun et al, 2004;Liu et al, 2008;Qin and Humayun, 2008;Le Roux et al, 2010, 2011, Zn/Fe and Zn/Mn (Le Roux et al, 2010Roux et al, , 2011, can be good indicators of the lithology and residual mineral assemblages of the magma source. Le Roux et al (2010Roux et al ( , 2011 indicate that Zn/Fe, Fe/Mn and Zn/Mn do not fractionate between olivine, orthopyroxene and partial melts, but are strongly fractionated when garnet or clinopyroxene are the dominant phases involved during melting or crystallization. Davis et al (2013) experimentally determined mineral/melt partitioning of FRTE and then calculated model partial melts of peridotite.…”

Petrogenesis of early Jurassic basalts in southern Jiangxi Province, South China: Implications for the thermal state of the Mesozoic mantle beneath South China

“…Wang et al, , 2014Heinonen et al, 2013). Zn/Fe and Fe/Mn ratios are promising proxies for discriminating a pyroxenite from a peridotite source (Le Roux et al, 2010;Ferguson et al, 2013;Zhang et al, 2015). Most of our samples have Zn/Fe and Fe/Mn ratios similar to peridotite melts (Fig.…”