Journal ArticleDOI
Rare-earth abundances in chondritic meteorites
TLDR
In this article, 15 chondrites, including eight carbonaceous chondites, were analyzed for rare earth element abundances by isotope dilution, and the persistence of anomalies in chondritic materials relatively removed from direct condensational processes implies that anomalous components were introduced at a late stage of chondrite formation.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1978-08-01. It has received 1346 citations till now. The article focuses on the topics: Chondrule & Chondrite.read more
Citations
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Contribution of metapelitic sediments to the composition, heat production, and seismic velocity of the lower crust of southern New Mexico, U.S.A.
TL;DR: Granulite and sillimanite-bearing quartzofeldspathic xenoliths were probably emplaced in the lower crust by tectonic underplating at a lower Proterozoic subduction zone as discussed by the authors.
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The Shabogamo Intrusive Suite, Labrador: Sr and Nd isotopic evidence for contaminated mafic magmas in the Proterozoic
TL;DR: The Shabogamo Intrusive Suite comprises numerous bodies of variably metamorphosed gabbro which intrude Archean and Proterozoic sequences at the junction of the Superior, Churchill, and Grenville structural provinces in western Labrador as discussed by the authors.
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H-chondrites - Trace element clues to their origin
TL;DR: In this paper, the abundances of 20 trace elements in four H4, two H3 and two H5 chondrites from the British Museum were analyzed in terms of the inhomogeneity of parent bodies and the depletion of volatiles in the higher petrologic types.
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The trace element chemistry of CaS in enstatite chondrites and some implications regarding its origin
John W. Larimer,R. Ganapathy +1 more
TL;DR: The trace element distribution in oldhamite (CaS) extracted from enstatite chondrites was determined by INAA as discussed by the authors, and the petrologic setting of the grains was studied microscopically, and their minor element contents determined by microprobe analysis.
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U-Pb geochronology and coupled Hf-Nd-Sr isotopic-chemical constraints of the Cassiterita Orthogneiss (2.47-2.41-Ga) in the Mineiro belt, Sao Francisco craton: Geodynamic fingerprints beyond the Archean-Paleoproterozoic Transition
N.S. Barbosa,N.S. Barbosa,Wilson Teixeira,Ciro Alexandre Ávila,P.M. Montecinos,Everton Marques Bongiolo,F.F. Vasconcelos +6 more
TL;DR: The Cassiterita Orthogneiss is the oldest pluton so far found within the Mineiro belt as discussed by the authors, with an in situ zircon U-Pb ages of between 2472 and 2414.
References
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Book
Advanced Inorganic Chemistry
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
Journal ArticleDOI
Synthesis of the Elements in Stars
TL;DR: In this article, a count of the stable and radioactive elements and isotopes is given, and Table I,1 shows that only promethium has not been found in nature, whereas 99 elements are found terrestrially and technetium is found in stars.
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Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites
TL;DR: In this paper, the exact determination of REE and Ba abundances in three carbonaceous (Orgueil Cl, Murchison C2 and Allende C3) and seven olivine-bronzite chondrites were carried out by mass spectrometric isotope dilution technique.
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A chemical-petrologic classification for the chondritic meteorites.
W. R. Van Schmus,John A. Wood +1 more
TL;DR: In this article, a two-dimensional classification grid based on chemical and petrologic subdivisions of chondritic meteorites is proposed, which extends the current chemical subdivisions to account for varying petrolic (implied metamorphic) properties within the primary chemical groups.