Mantle plumes originate at depths near the core− mantle boundary (~ 2,800 km). As such,
they provide invaluable information about the composition of the deep mantle and insight …

Isotopic variations usually follow mass-dependent fractionation, meaning that the relative
variations in isotopic ratios scale with the difference in mass of the isotopes involved (eg …

New tungsten isotope data for modern ocean island basalts (OIB) from Hawaii, Samoa, and
Iceland reveal variable 182W/184W, ranging from that of the ambient upper mantle to ratios …

The short-lived Hf-W isotope system has a wide range of important applications in
cosmochemistry and geochemistry. The siderophile behavior of W, combined with the …

Komatiites are crystallized samples of high-temperature, high-MgO lavas that were common
during the Archean, but became increasingly rarer in the Proterozoic and Phanerozoic …

Recent developments in planet formation theory and measurements of low D/H in deep
mantle material support a solar nebula source for some of Earth's hydrogen. Here we …

The isotopic characteristics of ocean island basalts have long been used to infer the nature
of their source and the long-term evolution of the Earth's mantle. Anticorrelation between …

Terrestrial planets are thought to experience episode (s) of large‐scale melting early in their
history. Fractionation during magma‐ocean freezing leads to unstable stratification within …

We report new data for W concentrations, stable W isotopic compositions, high-precision
182 W/184 W ratios, highly siderophile element (HSE) abundances and 187 Re–187 Os …

The low 182W/184W and high 3He/4He in some ocean island basalts compared to the bulk
mantle values may derive from the Earth's core through long-term core-mantle interactions. It …