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


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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.

作者简介

E. Letnikova

Sobolev Institute of Geology and Mineralogy, Siberian Branch

编辑信件的主要联系方式.
Email: efletnik@igm.nsc.ru
俄罗斯联邦, pr. Akad. Koptyuga 3, Novosibirsk, 630090

F. Letnikov

Institute of the Earth’s Crust, Siberian Branch

Email: efletnik@igm.nsc.ru
俄罗斯联邦, Lermontova ul. 128, Irkutsk, 664033

S. Shkol’nik

Institute of the Earth’s Crust, Siberian Branch

Email: efletnik@igm.nsc.ru
俄罗斯联邦, Lermontova ul. 128, Irkutsk, 664033

T. Cherkashina

Institute of the Earth’s Crust, Siberian Branch

Email: efletnik@igm.nsc.ru
俄罗斯联邦, Lermontova ul. 128, Irkutsk, 664033

L. Reznitskii

Institute of the Earth’s Crust, Siberian Branch

Email: efletnik@igm.nsc.ru
俄罗斯联邦, Lermontova ul. 128, Irkutsk, 664033

I. Vishnevskaya

Sobolev Institute of Geology and Mineralogy, Siberian Branch

Email: efletnik@igm.nsc.ru
俄罗斯联邦, pr. Akad. Koptyuga 3, Novosibirsk, 630090

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