Инд. авторы:	Letnikova E.F., Letnikov F.A, Kuznetsov A.B., Shkol'Nik S.I., Reznitskii L.Z., Turchenko T.L.
Заглавие:	Genesis of manganese ores and their position in sedimentary basins of the eastern segment of the Paleoasian Ocean: Sm-Nd isotopic and geochemical evidence
Библ. ссылка:	Letnikova E.F., Letnikov F.A, Kuznetsov A.B., Shkol'Nik S.I., Reznitskii L.Z., Turchenko T.L. Genesis of manganese ores and their position in sedimentary basins of the eastern segment of the Paleoasian Ocean: Sm-Nd isotopic and geochemical evidence // Doklady Earth Sciences. - 2011. - Vol.439. - Iss. 2. - P.1157-1162. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X11080253; SCOPUS: 2-s2.0-80054003011;
Реферат:	eng: The first geochemical and Sm-Nd isotopic characteristics of Neoproterozoic-Cambrian manganese ores from the south folded framing of the Siberian Craton have been obtained. For manganese ores from the Podikat deposit, Tsagan-Zaba and, in part, for Slyudyanka ore manifestations, an explicit positive Eu anomaly and variable Ce behavior are typical no depending on degree of metamorphism. In the rocks of Itantsa ore manifestation and, in part, in those of Slyudyanka, REEs have distribution patterns similar to the normal sedimentary pattern and are characterized by a gentle slope with a negative Eu anomaly and by the absence of a Ce anomaly. With the geochemical peculiarities, including REE distribution in them, on aggregate, reconstruction of vast hydrothermal fields within the south framing of the Siberian Craton and spatial position of the studied manganese basins relative to the craton has become possible. © 2011 Pleiades Publishing, Ltd.
Ключевые слова:	Russian Federation; sedimentary basin; samarium; rare earth element; paleoceanography; neodymium isotope; metamorphism; manganese deposit; geochemistry; europium; cesium; Ores; Sedimentology; Europium; Spatial positions; Sedimentary basin; Paleo-Asian Ocean; Ore manifestation; Manganese ore; Isotopic characteristics; Hydrothermal field; Geochemical evidence; Gentle slopes; Distribution patterns; Sedimentary rocks; Normal distribution; Neodymium; Manganese; Isotopes; Siberian Craton; Geochemistry;
Издано:	2011
Физ. характеристика:	с.1157-1162