Basaltic volcanism'samples' the Earth's mantle to great depths, because solid-state
convection transports deep material into the (shallow) melting region. The isotopic and trace …

The study of noble gases in oceanic basalts is central to understanding chemical
heterogeneity of the Earth's mantle and origin of the atmosphere. In the terrestrial …

The mean composition of mid‐ocean ridge basalts (MORB) is determined using a global
data set of major elements, trace elements, and isotopes compiled from new and previously …

The isotopic compositions of terrestrial hydrogen and nitrogen are clearly different from
those of the nebular gas from which the solar system formed, and also differ from most of …

Compositional models of the Earth are critically dependent on three main sources of
information: the seismic profile of the Earth and its interpretation, comparisons between …

Chemical geodynamics ADS Classic is now deprecated. It will be completely retired in October
2019. This page will automatically redirect to the new ADS interface at that point. SAO/NASA …

The average chemical compositions of the continental crust and the oceanic crust
(represented by MORB), normalized to primitive mantle values and plotted as functions of …

Nb/U ratios and Ce/Pb ratios are surprisingly uniform at47±10and25±5, respectively, in both
mid-ocean ridge basalts (MORB) and ocean island basalts (OIB). We show that these ratios …

We present an estimate for the composition of the depleted mantle (DM), the source for mid‐
ocean ridge basalts (MORBs). A combination of approaches is required to estimate the …

We present a comprehensive geochemical data set for the most recent volcanics from the
Mariana Islands, which provides new constraints on the timing and nature of fluxes from the …