The composition and state of Earth's core, located deeper than 2,900 km from the surface,
remain largely uncertain. Recent static experiments on iron and alloys performed up to inner …

The silicon isotope composition of biogenic silica (δ 30 Si BSi) in the ocean is a function of
the δ 30 Si of the available dissolved Si (DSi; H 2 SiO 4), the degree of utilisation of the …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

terrestrial rocks. By the year 1850, 18 elements had been identified in meteorites: carbon,
oxygen, sodium, magnesium, aluminum, silicon, phosphorous, sulfur, potassium, calcium …

To constrain further the Mg isotopic composition of the Earth and chondrites, and investigate
the behavior of Mg isotopes during planetary formation and magmatic processes, we report …

A model of core formation is presented that involves the Earth accreting heterogeneously
through a series of impacts with smaller differentiated bodies. Each collision results in the …

The heavy iron isotopic composition of Earth's crust relative to chondrites has been
explained by vaporization during the Moon-forming impact, equilibrium partitioning between …

Understanding the nature and origin of the precursor material to terrestrial planets is key to
deciphering the mechanisms and timescales of planet formation. Nucleosynthetic variability …

Earth's origins are challenging to elucidate, given the lack of surviving terrestrial geology
from the first 500 Myr of the Solar System. In this Review, we discuss breakthroughs in …

Geochemical evidence suggests that the material accreted by the Earth did not change in
nature during Earth's accretion, presumably because the inner protoplanetary disc had …