Boninites are rare, high-Si, high-Mg, low-Ti lavas that have considerable tectonic
significance, especially for recognizing and interpreting episodes of subduction initiation in …

Several defective assumptions have hindered understanding the evolution of Earth and its
nearest neighbors. These include the claim that the Lu-Hf and Sm-Nd isotope systems can …

We measured Ni partitioning between olivine and melt,, in experiments on mid-ocean ridge
basalt (MORB) encapsulated in olivine at pressures from 1 atm to 3· 0 GPa and …

Cratonic lithosphere is believed to have been chemically buoyant and mechanically
resistant to destruction over billions of years. Yet the absence of cratonic roots at some …

The application of the olivine–spinel aluminum exchange thermometer to natural samples is
limited by the restricted experimental data set on which it was calibrated. Here, we present a …

Drill core samples from the 3.33 Ga high-alumina-type Commondale komatiites from the
southern Kaapvaal craton (South Africa) were analysed for major, trace elements and Hf …

The Finnish part of the Archaean Karelia Province is divided into several complexes on the
basis of lithological, structural, metamorphic and geochronological differences between …

The Archaean bedrock of the Karelia and Belomorian Provinces is mostly composed of
granitoids and volcanic rocks of greenstone belts whose ages vary from c. 3.50 to 2.66 Ga …

Abstract The c. 3· 3 Ga Commondale komatiites located south of the Barberton greenstone
belt in the Kaapvaal Craton are different from other komatiites, possessing compositional …

Rocks with chemical compositions similar to Cenozoic boninites occur in many Archean
cratons (boninite-like rocks), but they are rarely well-preserved, well-sampled, or presented …