Abyssal peridotites are ultramafic rocks collected from mid-ocean ridges that are the
residues of adiabatic decompression melting. Their compositions provide information on the …

The record of the continental lithosphere is patchy and incomplete; no known rock is older
than 4.02 Ga, and less than 5% of the rocks preserved are older than 3 Ga. In addition, there …

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

The origin of giant lode gold deposits of Mesozoic age in the North China craton (NCC) is
enigmatic because high-grade metamorphic ancient crust would be highly depleted in gold …

An accurate assessment of the bulk chemical composition of Mars is fundamental to
understanding planetary accretion, differentiation, mantle evolution, the nature of the …

The excess of highly siderophile elements in the Earth's mantle is thought to reflect the
addition of primitive meteoritic material after core formation ceased,,,. This 'late veneer'either …

Accretionary orogens are the sites of long-lived convergent margin tectonics, both
compressional and extensional. They are also the hosts to the majority of the world's …

Platinum-group element (PGE) deposits in the Bushveld Complex and other layered
intrusions form when large, incompletely solidified magma chambers undergo central …

Geochemical data for H 2 O and other volatiles, as well as major and trace elements, are
reported for 377 samples of lunar volcanic glass from three chemical groups (A15 green …

The excess of highly siderophile (iron-loving) elements (HSEs) and the chondritic ratios of
most HSEs in the bulk silicate Earth (BSE) may reflect the accretion of a chondritic 'late …