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
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Paleozoic alkaline volcanism: geochemistry and petrogenesis of Um Khors and Um Shaghir trachytes of the central Eastern Desert, Egypt
TL;DR: The Um Khors and Um Shaghir trachyte (UKT and UST) plugs and sheets represent two conspicuous outcrops of Paleozoic alkaline volcanism in the central Eastern Desert of Egypt as discussed by the authors.
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Geochemistry of reduced fluids from alkaline igneous rocks of the Khibiny pluton
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Volcanic dykes in the north Chilean Coast Range
TL;DR: The dykes can be divided into three groups according to their petrography, major and trace element compositions as mentioned in this paper, and they are genetically related to a continental fault system, whereas the dykes of series II and III are directly related to the post-Triassic evolution of the active continental margin.
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Rare earth element abundances in the CK chondrites including the Kobe meteorite
TL;DR: The Kobe (CK4) meteorite and other CK chondrites are characterized with respect to rare earth element (REE) abundances using 12 bulk samples from 10 CK CHs including Ningqiang, Karoonda, Kobe, Y-693, Maralinga and Y-82102 as mentioned in this paper.
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O enxame de diques de anfibolito do Cráton São Francisco meridional
TL;DR: In this paper, diques maficos datados em 2,19 Ga se constituiram em resposta a contracao for NW ocorrida durante a Orogenia Transamazonica, o magma toleitico se alojou, cristalizou and se metamorfisou sintectonicamente ao longo de zonas de cisalhamento transcorrente that se desenvolviam sob condicoes metamoricicas de facies anfibolito al
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.