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 …

The current state and surface conditions of the Earth and its twin planet Venus are drastically
different. Whether these differences are directly inherited from the earliest stages of …

The Lutetium–Hafnium radiogenic isotopic system is widely used as a chronometer and
tracer of planetary evolution. In order for this isotopic system to fulfill its potential in planetary …

The Pacific Centre for Isotopic and Geochemical Research (PCIGR) at the University of
British Columbia has undertaken a systematic analysis of the isotopic (Sr, Nd, and Pb) …

We present newly acquired trace element compositions for more than 300 zircon grains in
36 gabbros formed at the slow-spreading Mid-Atlantic and Southwest Indian Ridges. Rare …

Clumped isotope geochemistry is concerned with the state of ordering of rare isotopes in
natural materials. That is, it examines the extent to which rare isotopes (D, 13C, 15N, 18O …

The 182Hf–182W systematics of meteoritic and planetary samples provide firm constraints
on the chronology of the accretion and earliest evolution of asteroids and terrestrial planets …

Isotopic variations usually follow mass-dependent fractionation, meaning that the relative
variations in isotopic ratios scale with the difference in mass of the isotopes involved (eg …

Detrital zircon crystals from the Jack Hills metasedimentary belt, Western Australia, are the
only surviving vestiges of Hadean crust and represent an extraordinary archive into the …

Many geological and geochemical changes are recorded on Earth between 3 and 2 Ga.
Among the more important of these are the following:(1) increasing proportion of basalts with …