Linear chains of volcanic ocean islands are one of the most distinctive features on our
planet. The longest, the Hawaiian–Emperor Chain, has been active for more than 80 million …

Mantle plumes—which are usually, but not always, chemically distinct from the mid-ocean
ridge basalt (MORB)—may be rooted in the core-mantle boundary and begin with large …

Plate tectonic processes introduce basaltic crust (as eclogite) into the peridotitic mantle. The
proportions of these two sources in mantle melts are poorly understood. Silica-rich melts …

Abstract Many precious,'iron-loving'metals, such as gold, are surprisingly abundant in the
accessible parts of the Earth, given the efficiency with which core formation should have …

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 …

The lowermost mantle right above the core-mantle boundary is highly heterogeneous
containing multiple poorly understood seismic features. The smallest but most extreme …

The oxygen fugacities of nine mantle-derived komatiitic and picritic systems ranging in age
from 3.55 Ga to modern day were determined using the redox-sensitive partitioning of V …

Ratios of first-row transition elements (FRTE), such as Fe/Mn and Zn/Fe, may be fractionated
differently by partial melting of peridotite than by partial melting of recycled lithologies like …

Abstract The IUPAC (International Union of Pure and Applied Chemistry) Periodic Table of
the Elements and Isotopes (IPTEI) was created to familiarize students, teachers, and non …

Shield-stage high-MgO alkalic lavas from La Palma and El Hierro (Canary Islands) have
been characterized for their O–Sr–Nd–Os–Pb isotope compositions and major-, trace-, and …