Abundances of the elements: Meteoritic and solar
Solar-system abundances of the elements
Interstellar grains in meteorites: I. Isolation of SiC, graphite and diamond; size distributions of SiC and graphite
Origin, age, and composition of meteorites
- E. Anders
- Geology, Physics
- 1 December 1964
This paper attempts to bring together and evaluate all significant evidence on the origin of meteorites.The iron meteorites seem to have formed at low pressures. Laboratory evidence shows that the…
Pre-biotic organic matter from comets and asteroids
- E. Anders
- 16 November 1989
About 20 g cm−2 intact organic carbon may have accumulated in the few hundred million years between the last cataclysmic impact and the beginning of life, which may have included some biologically important compounds that did not form by abiotic synthesis on Earth.
Chemical composition of Earth, Venus, and Mercury.
Review of available data shows only a few gross trends for the inner planets: FeO decreases with heliocentric distance, whereas volatiles are depleted and refractories are enriched in the smaller planets.
Interstellar diamonds in meteorites
Primitive meteorites contain up to 400 p.p.m. of a very fine-grained type of carbon, noncommittally called Cδ1. It apparently conies from outside the Solar System, as it carries isotopically…
Distribution of gold and rhenium between nickel-iron and silicate melts: implications for the abundance of siderophile elements on the Earth and Moon
Samarium-146 in the Early Solar System: Evidence from Neodymium in the Allende Meteorite
A carbon-chromite fraction from the Allende C3V chondrite shows strikingly large isotopic enrichments of neodymium-142 and neodynium- 143, providing an improved estimate of the original abundance of extinct samarium-146 in the early solar system.
Evidence for interstellar SiC in the Murray carbonaceous meteorite
Silicon carbide has been observed in the interstellar medium and in circumstellar shells. Although it might be expected to occur in primitive meteorites that contain other kinds of pre-solar…