chondrite

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  • noun

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a rock of meteoric origin containing chondrules

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The scientists note another difference is that these carbonaceous chondrites have bulk water contents of 15 to 20 percent, while Ceres' content is as much as 30 percent.
In 2013, Saal and colleagues reported in Science that the D/H ratio of water trapped within the glass matched that measured in both Earth's oceans and Alexander's carbonaceous chondrites (SN: 6/29/13, p.
We think that chondrites represent the earliest building blocks of rocky planets such as Earth, Mars or Venus," Miller said.
The standardization based on chondrite, which reflects the differentiation degree of the sample and characteristics of the source region in comparison with pristine terrestrial materials, is one of the approaches to the study of the distribution pattern of REEs in shale sediment.
The new mineral was discovered within the meteorite officially designated Yamato 691 enstatite chondrite.
Most of the latter are chondrites which contain chondrules--small spheroidal objects a millimetre or so in diameter, some of the most primitive material in the Solar System.
The rocks are carbonrich chondrites, ancient fragments of asteroids formed shortly after the birth of the Solar System 5bn years ago.
Ces diagrammes permettent de preciser les processus en jeu des systemes d'arcs insulaires modernes et anciens et incluent des diagrammes radiaux normalises pour les chondrites, pour les basaltes de dorsales oceaniques (MORB) et pour le manteau, lesquels son caracterises par des profils anguleux irreguliers des courbes de contenus en elements traces (en contraste avec les profils relativement reguliers des suites intra-cratoniques).
Chondrites reworked all other trace fossils and was the last bioturbation episode to have influenced the chalk.
We previously had utilized thermomagnetic analysis of carbonaceous chondrites to establish the presence of magnetite ([Fe.
Chondrites are stony meteorites that have not been modified due to melting or differentiation of the parent body.
2) shows three major depositional units, each heavily bioturbated by Chondrites and Teichichnus.