Abyssal peridotites are ultramafic rocks collected from mid-ocean ridges that are the
residues of adiabatic decompression melting. Their compositions provide information on the …

Ubiquitous heterogeneity in the Earth's mantle has been documented by numerous
chemical and isotopic analyses of oceanic basalts. Despite the ever-increasing amount of …

When Harry Hess first proposed the theory of seafloor spreading, he imagined that mantle
peridotite upwelling at midocean ridges reacted with water to form a serpentinite oceanic …

A REE-in-two-pyroxene thermometer for mafic and ultramafic rocks has been developed on
the basis of the temperature and pyroxene composition dependent rare earth element (REE) …

The concentration of carbon in primary mid‐ocean ridge basalts (MORBs), and the
associated fluxes of CO2 outgassed at ocean ridges, is examined through new data …

Archean, Paleoproterozoic, and Mesoproterozoic rocks, assemblages, and structures differ
greatly both from each other and from modern ones, and lack evidence for subduction and …

We report major, trace, and volatile element (CO 2, H 2 O, F, Cl, S) contents and Sr, Nd, and
Pb isotopes of mid-ocean ridge basalt (MORB) glasses from the Northern East Pacific Rise …

Abyssal peridotites are oceanic mantle fragments that were recently processed through
ridges and represent residues of both modern and ancient melting. To constrain the nature …

Terrestrial oceanic and continental basalts are enriched by approximately+ 0.1‰ in
56Fe/54Fe ratio relative to primitive, undifferentiated meteorites (chondrites). The δ56Fe …

The Oman ophiolite consists of several massifs cropping out along a 500 km long band
trending NW–SE along the coast of Oman; it is one of the best exposed sections of oceanic …