Инд. авторы:	Dobretsov N.L., Zhmodik S.M., Lazareva E.V., Bryanskaya A.V., Ponomarchuk V.A., Saryg-ool B.Y, Kirichenko I.S., Tolstov A.V., Karmanov N.S.
Заглавие:	Structural and Morphological Features of the Participation of Microorganisms in the Formation of Nb-REE-Rich Ores of the Tomtor Field (Russia)
Библ. ссылка:	Dobretsov N.L., Zhmodik S.M., Lazareva E.V., Bryanskaya A.V., Ponomarchuk V.A., Saryg-ool B.Y, Kirichenko I.S., Tolstov A.V., Karmanov N.S. Structural and Morphological Features of the Participation of Microorganisms in the Formation of Nb-REE-Rich Ores of the Tomtor Field (Russia) // Doklady Earth Sciences. - 2021. - Vol.496. - Iss. 2. - P.135-138. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X21020057; WoS: 000627785600008;
Реферат:	eng: Data indicating the important role of microorganisms in the redistribution of REEs in the weathering crust and the decisive role in the concentration of REEs during the formation of ores in the upper ore horizon of the Tomtor field are obtained. The uptake of REEs was carried out by the community of microorganisms, such as phototrophs, methanogens, methanotrophs, and proteobacteria, which form the basis of the microbiocenosis for this paleoecosystem. The isotopic composition of C carbonates in all samples studied with fossilized microorganisms corresponds to the biogenic one, and the isotopic composition delta O-18(SMOW) (from 7 to 20 parts per thousand) indicates the endogenous (hydrothermal) and, to a lesser extent, exogenous nature of the solutions. The low (Sr-87/Sr-86)(I) values of carbonates (similar to 0.7036-0.7042) exclude the participation of seawater.
Ключевые слова:	microorganisms; weathering crust; carbonatites; Tomtor Nb-REE field;
Издано:	2021
Физ. характеристика:	с.135-138