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Synonyms for chondritic

having a granular structure like that of chondrites



References in periodicals archive ?
The chondrite-normalised REE patterns of these rocks are depleted in most of LREE (i.e., between 10x and 18x chondritic) and have flat HREE pattern (Fig.
Four syenitic samples and one metarhyolite sample show similar chondrite-normalized patterns, with light REE enrichment (200 to 400 times chondritic values) and gently sloping heavy REE at 20 to 40 times chondritic values, and lie in the field defined by felsic samples from the West Barneys River suite (Fig.
"Adding a tiny amount of chondritic material could explain where many present-day metals came from," says Matthias Willbold, a geochemist at the University of Bristol in England, whose team reports the findings in the Sept.
Previous observations of Phobos at visible and near-infrared wavelengths have been interpreted to suggest the possible presence of carbonaceous chondritic meteorites, carbon-rich "ultra primitive" materials, commonly associated with asteroids dominant in the middle part of the asteroid belt.
The authors speculated with the possibility that this nanophase could be the iridium K-T boundary carrier and that it originated from condensation of a chondritic vaporized impactor inside a vapour impact plume.
The mantle-normalized patterns of AUK are also characterized by near chondritic Ti/Zr (~110) and depletion of Th, Nb and LREE (Fig.
Whole-rock isotopic data from the Riga, Marjamaa, Naissaare, Neeme, and Abja plutons indicate an approximately chondritic source for Nd in the mafic rocks of the Riga batholith and the Abja intrusion, and a Palaeoproterozoic (Svecofennian) protolith for the felsic rocks--the [T.sub.DM] model ages of the felsic rocks range from 2.10 to 1.89 Ga (Ramo et al.
(1978) Rare earth abundance in chondritic meteorites.
Plots of the analyses, normalized to chondritic values (Anders and Ebihara, 1982) are shown in Figure 9 and Figure 10.
Since primitive and differentiated asteroids, planetary embryos, and the Earth-Moon system represent different stages of planet formation, studies of chondritic meteorites and samples from Vesta, Mars, the Moon, and Earth can provide constraints on the evolution of planetary volatiles from primordial to present-day compositions.
O'Nions, "Rare-earth abundances in chondritic meteorites," Geochimica et Cosmochimica Acta, vol.
Identification of REE fractionation in the metacarbonate rocks was carried out by normalising (Haskin et al, 1968) the concentration of the rare earth elements to average chondritic meteorites, and the result for samples having concentrations beyond detection limits is presented as REE pattern (Figure 7).
(2010) demonstrated the presence of non-reworked extraterrestrial L-type chondritic chromite grains in the breccia, which gives further support to an impact origin.
Chondrite Normalized REE Diagrams: Chondrite normalized REE diagrams are generally prepared to determine the behavior of REE in the rocks and to constrain their source compositions, with reference to normalized chondritic values.