Nd isotope systematics of the Vendian–Early Cambrian sedimentary ores in the northern segment of the Paleoasian Ocean

被引：0
|
作者：
E. F. Letnikova
F. A. Letnikov
S. I. Shkol’nik
T. Yu. Cherkashina
L. Z. Reznitskii
I. A. Vishnevskaya
机构：
[1] Russian Academy of Sciences,Sobolev Institute of Geology and Mineralogy, Siberian Branch
[2] Russian Academy of Sciences,Institute of the Earth’s Crust, Siberian Branch
来源：
Doklady Earth Sciences | 2016年 / 466卷
关键词：
Cambrian; Barite; Sedimentary Basin; DOKLADY Earth Science; Phosphorite;
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摘要：
Isotope–geochemical studies of Mn, P, and Ba ores were performed in order to establish the influence of submarine hydrotherms on the formation of Early Cambrian sedimentary rocks of the southern environs of the Siberian Platform. Based on study of the geochemical and isotope (εNd) characteristics of the shallow-water Mn and Ba ores and phosphorites of southern environs of the Siberian Platform with similar ages, two types of sedimentary basins of the different geodynamic origins were distinguished: intraplate oceanic and those of the active continental margin, for which the sources of ore materials differ by the proportions of the mantle and contaminated crustal matter.
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页码：42 / 46
页数：4
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