Content and Composition of Rare Earth Elements in Ferromanganese Formations from the East Siberian Sea as an Indicator of Recent Sedimentation and Diagenesis Conditions

Content and Composition of Rare Earth Elements in Ferromanganese Formations from the East Siberian Sea as an Indicator of Recent Sedimentation and Diagenesis Conditions

The distribution of rare earth elements (REEs) in different morphotypes (ferruginous and ferromanganese crusts, discoid nodules, biomorphoses) of ferromanganese formations (FMFs) of the East Siberian Sea has been studied for the first time. The FMFs were formed during (sub)oxic diagenesis at differe...

Full description

Saved in:
Bibliographic Details
Published in:Doklady earth sciences Vol. 507; no. Suppl 2; pp. S287 - S294
Main Authors: Kolesnik, O. N., Kolesnik, A. N., Astakhov, A. S., Selutin, S. A., Ren, Xiangwen, Shi, Xuefa
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-12-2022
Springer
Springer Nature B.V
Subjects:
Cerium
Concretions
Crusts
Depletion
Diagenesis
Earth and Environmental Science
Earth Sciences
Ferromanganese
Ferromanganese nodules
Lithology
Manganese
Manganese content
Nodules
Oxidation
Rare earth elements
Sediment
Sedimentation
Sedimentation & deposition
Sedimentation rates
Sediments
Sediments (Geology)
Trace elements
East Siberian Sea
diagenesis
ferromanganese formations
terrigenous runoff
East Siberian Sea
rare earth elements
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The distribution of rare earth elements (REEs) in different morphotypes (ferruginous and ferromanganese crusts, discoid nodules, biomorphoses) of ferromanganese formations (FMFs) of the East Siberian Sea has been studied for the first time. The FMFs were formed during (sub)oxic diagenesis at different distances from the land and, accordingly, from the main sources of sedimentary material. Seaward, with an increase in the oxidation of sediments, primarily because of reducing sedimentation rates, FMFs, against a rising manganese content in them (Mn from 0.09 to 12.34%, Mn/Fe ratio from 0.01 to 1.15), show a decrease in the total REE content (ΣREE from 166.90 to 96.86 mg kg −1 ), depletion in cerium (Ce an from 0.90 to 0.71), and enrichment with middle REEs. Due to the rapid growth of FMFs, which should be faster than sedimentation rates, reactive REE species do not have time to accumulate; therefore, REE total content in FMFs is everywhere lower than in sediments.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X22601298