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 …

Semiconductor nanocrystals were prepared for use as fluorescent probes in biological
staining and diagnostics. Compared with conventional fluorophores, the nanocrystals have …

Mantle metasomatism is a relatively recent concept introduced in the early 1970s when
detailed studies of lithospheric mantle rock fragments (xenoliths), brought to the surface of in …

Re–Os data for peridotite xenoliths carried in Paleozoic kimberlites and Tertiary alkali
basalts confirm previous suggestions that the refractory and chemically buoyant lithospheric …

Continents, especially their Archean cores, are underlain by thick thermal boundary layers
that have been largely isolated from the convecting mantle over billion-year timescales, far …

Occurrence and ClassificationFragments of the Earth's mantle are frequently transported to
the surface via volcanic rocks that are dominantly alkaline in nature. These fragments range …

The Re-Os isotopic systematics of spinel-and garnet-bearing mantle xenoliths from North
and Central America, Europe, southern Africa, Asia, and the Pacific region were determined …

Osmium, Ru, Ir, Pt, Pd and Re abundances and 187Os/188Os data on peridotites were
determined using improved analytical techniques in order to precisely constrain the highly …

Archaean–Proterozoic crust, atop a thick (180 km), cold (40 mW/m2), melt-depleted mantle
keel, characterised the North China Craton (NCC) at the end of the Precambrian. Differing …