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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Journal ArticleDOI
Heterogeneity in syntectonic granitoids emplaced in a major shear zone, southern Brazil
Claudia Regina Passarelli,Ian McReath,Miguel Ângelo Stipp Basei,Oswaldo Siga,Mario da Costa Campos Neto +4 more
TL;DR: The 614 Ma Fernandes granitoid association as discussed by the authors is composed mainly of hornblende syenogranites including A-type, and alkali-calcic and calc-alkaline types.
Journal ArticleDOI
Origin of the hornblende andesites of northern kamchatka
TL;DR: In this paper, the origin of the Hornblende andesites of the Kamchatka region is discussed, and a detailed account of their evolution is given. International Geology Review: Vol. 31, No. 3, pp. 246-252.
Journal ArticleDOI
The oxidation state of europium in hydrothermal scheelite: in situ measurement by xanes spectroscopy
TL;DR: X-ray microfluorescence and Eu L 3 micro X-ray absorption near-edge structure (XANES) spectroscopy were conducted to determine the distribution and valence state of europium in two samples of scheelite (CaWO4) containing between 40 and 350 ppm Eu as mentioned in this paper.
Book ChapterDOI
Average Composition of Lower and Intermediate Continental Crust, Kapuskasing Structural Zone, Ontario
M. G. Truscott,D. M. Shaw +1 more
TL;DR: In this paper, the average compositions of the Archean lower and intermediate continental crust (LCC and ICC) in the region of the Kapuskasing Structural Zone (KSZ) were made using the proportions and average composition of lithologic units.
Journal ArticleDOI
The nature and origin of eclogite blocks in serpentinite from the Tamworth Belt, New England Fold Belt, eastern Australia
A. D. Allan,Evan C. Leitch +1 more
TL;DR: In this paper, small eclogite blocks are found in the eastern part of the Tamworth Belt of the New England Fold Belt, where they are either accidental blocks incorporated into the ultramafic body during emplacement from a forearc substrate or were produced by high pressure metamorphism of a basaltic intrusion carried to depth in the ultramerafic rocks of a downgoing slab.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.