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 …

▪ Abstract Mantle plumes are recognized by domal uplift, triple junction rifting, and especially
the presence of a large igneous province (LIP), dominated in the Phanerozoic by flood …

More than 50 per cent of the Earth's upper mantle consists of olivine and it is generally
thought that mantle-derived melts are generated in equilibrium with this mineral. Here …

Results are reported of an exploration of mantle source lithology for intraplate magmas
using whole-rock and olivine phenocryst compositions. This analysis includes modern mid …

Recycled ancient oceanic crust with variable amounts of aging, or inclusion of sediments of
differing types and origins has often been invoked as a source for present‐day ocean island …

Osmium, Ru, Ir, Pt, Pd and Re abundances and 187Os/188Os data on peridotites were
determined using improved analytical techniques in order to precisely constrain the highly …

Mantle temperatures provide a key test of the mantle plume hypothesis, and olivine-liquid
equilibria provide perhaps the most certain means of estimating mantle temperatures. Here …

Abstract The short-lived 182 Hf-182 W isotope system (t 1/2= 9 Ma) left evidence in both
ancient and modern terrestrial rock record of processes that took place during the earliest …

Oceanic basalts, such as mid-ocean ridge basalts (MORB) and ocean island basalts (OIB),
are characterized by large isotopic and trace element variability that is hard to reconcile with …

The Earth's lithosphere can focus basaltic magmatism along pre-existing weakness zones or
discontinuities. However, apart from the influence on the geochemistry of magmas emplaced …