Journal ArticleDOI
Evolution of the Kaapvaal Craton as viewed from geochemical and SmNd isotopic analyses of intracratonic pelites
Bor-ming Jahn,Kent C. Condie +1 more
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In this paper, the authors show that the relatively uniform Sm/Nd ratios in sediments do not indicate a near-constant composition for the upper continental crust of the world.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1995-06-01. It has received 320 citations till now. The article focuses on the topics: Craton & Continental crust.read more
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Crustal evolution of southeastern China: Nd and Sr isotopic evidence
TL;DR: In this paper, the authors present a synthesis of crustal evolution in SE China based on extensive Nd and Sr isotopic data compiled from the literature for intrusive granitoids, volcanic, sedimentary and metamorphic rocks from three major tectonic units of SE China: Dabie, Yangtze and Cathaysia.
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Chemical composition of the continental crust as revealed by studies in East China
TL;DR: In this paper, the authors reported abundances of sixty-three major, trace, and rare earth elements in the upper crust in five tectonic units (the interior and southern margin of the North China craton, the North and South Qinling orogenic belts, and the Yangtze craton) of central East China and the study area as a whole.
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Neoproterozoic granitoids in South China: crustal melting above a mantle plume at ca. 825 Ma?
Xian-Hua Li,Xian-Hua Li +1 more
TL;DR: In this paper, the authors show that pre-rifting granitoids are widespread in the Yangtze craton, South China, and they exhibit no temporal or spatial zonation, hence no simple genetic relationship can be established between the different granitoid types and geodynamic environments, as suggested previously.
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Contrasting geochemical and Sm-Nd isotopic compositions of Archean metasediments from the Kongling high-grade terrain of the Yangtze craton: evidence for cratonic evolution and redistribution of REE during crustal anatexis
TL;DR: In this article, three clastic metasediments from the Kongling high-grade terrain of the Yangtze craton, South China were analyzed for major, trace and rare earth elements and Sm-Nd isotopic ratios.
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Geochemical characterization of the Luochuan loess-paleosol sequence, China, and paleoclimatic implications
TL;DR: In this paper, chemical (major and trace element) and isotopic (Sr, Nd) analyses of the Luochuan loess-paleosol sequence in China were performed in order to examine the following problems: (1) potential source heterogeneity; (2) element behavior during pedogenesis; (3) paleoclimatic implications; and (4) the use of loess data to determine the average composition of the upper continental crust.
References
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The continental crust: Its composition and evolution
TL;DR: In this paper, the authors describe the composition of the present upper crust and deal with possible compositions for the total crust and the inferred composition of lower crust, and the question of the uniformity of crustal composition throughout geological time is discussed.
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Early Proterozoic climates and plate motions inferred from major element chemistry of lutites
H.W. Nesbitt,Grant M. Young +1 more
TL;DR: The early Proterozoic Huronian Supergroup of the north shore of Lake Huron (Fig. 1) is a thick succession of sedimentary and volcanic rocks deposited between about 2,500 and 2,100 Myr ago as discussed by the authors.
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Chemical composition and evolution of the upper continental crust: Contrasting results from surface samples and shales
TL;DR: The average chemical composition of the upper continental crust (UC) as a function of age is estimated from chemical analyses, geologic maps, stratigraphic sections and isotopic ages as discussed by the authors.
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A Sm-Nd isotopic study of atmospheric dusts and particulates from major river systems
TL;DR: In this paper, the average ratio of Sm/Nd is about 0.19 in the upper continental crust, and has remained so since the early Archean, thereby precluding the likelihood of major mafic-to-felsic or felsicto-mafic trends in the overall composition of the sedimentary mass through earth history.