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 …

▪ Abstract The Re-Os isotope sytem, based on the long-lived β− transition of 187Re to
187Os, has matured to wide use in cosmochemistry and high-temperature geochemistry …

Basalts and mantle peridotites of mid-ocean ridges are thought to sample Earth's upper
mantle. Osmium isotopes of abyssal peridotites uniquely preserve melt extraction events …

Thus, Hurley and his collaborators were able to distinguish crustal magma sources from
those located in the mantle on the basis of their initial strontium-isotopic compositions …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

Bulk abyssal peridotites have lower MgO and higher SiO2 than comparable continental
peridotites. If these low MgO SiO 2 ratios were a primary feature of the oceanic mantle, a …

The Earth's mantle beneath ocean ridges is widely thought to be depleted by previous melt
extraction, but well homogenized by convective stirring. This inference of homogeneity has …

The highly siderophile elements (HSE) pose a challenge for planetary geochemistry. They
are normally strongly partitioned into metal relative to silicate. Consequently, planetary core …

The Daxin'anling–Taihangshan or North–South Gravity Lineament (NSGL) is an important
geologic zone within the North China Craton (NCC). Crustal elevation, morphology, crustal …

Veined peridotite xenoliths from the mantle beneath the giant Ladolam gold deposit on Lihir
Island, Papua New Guinea, are 2 to 800 times more enriched in copper, gold, platinum, and …