Subduction at convergent margins introduces a range of sedimentary and crustal materials
into the mantle, providing the most dominant form of heterogeneity in the source of oceanic …

Noble gas isotope systematics, particular those of He, have been fundamental in showing
that some ocean island basalts (OIB) were sourced from deep mantle plumes. Relationships …

Helium isotopes provide an important tool for tracing early-Earth, primordial reservoirs that
have survived in the planet's interior,,. Volcanic hotspot lavas, like those erupted at Hawaii …

The customary practice for displaying REE abundances is to normalize them to chondritic
abundances and then to plot these normalized abundances in order of atomic number, Z …

The oceanic crust is formed by a combination of magmatic and tectonic processes at mid‐
ocean spreading centers. Under ultraslow spreading environment, however, observations of …

The spatial distribution of the geochemical domains hosting recycled crust and primordial
(high‐3He/4He) reservoirs, and how they are linked to mantle convection, are poorly …

Abstract The Southwest Indian Ridge (SWIR) is characterized by an ultraslow spreading
rate, thin crust, and extensive outcrops of serpentinized peridotite. Previous studies have …

Abstract The Indomed-Gallieni supersegment (46-52° E) of the Southwest Indian Ridge
(SWIR) has been of interest as a melt-rich endmember of ultraslow spreading mid-ocean …

Abstract Interaction between the Southwest Indian Ridge (46° E and 52° 20′ E) and Crozet
hotspot has been proposed by geophysical studies but remains controversial mostly due to …

Abstract The Southern Ocean (SO) plays a fundamental role in global climate due to the
presence of the intense eastward‐flowing Antarctic Circumpolar Current (ACC), one of the …