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Quaternary
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Early Diagenetic Processes in Marine Cold Seeps
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Early Diagenetic Processes in Marine Cold Seeps

A special issue of Quaternary (ISSN 2571-550X).

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 1258

Special Issue Editors

Dr. Alexey Ruban

E-Mail Website
Guest Editor
Division for Geology, School of Earth Sciences & Engineering, Tomsk Polytechnic University, Tomsk 634050, Russia
Interests: carbonates; carbon isotopes; cold seeps; geochemistry; minerology
Dr. Elena Gershelis

E-Mail Website
Guest Editor
Division for Geology, School of Earth Sciences & Engineering, Tomsk Polytechnic University, 634050 Tomsk, Russia
Interests: organic carbon; biomarkers; Rock-Eval pyrolysis; grain size; permafrost

Special Issue Information

Dear Colleagues,

Cold seeps are a widespread phenomenon that occur on the shelves and continental slopes of inland and marginal seas around the world. The seepage of hydrocarbon-rich fluids causes a change in the biogeochemical environment in sediments and in bottom water. This contributes to the formation of carbonate and sulphide minerals, the enrichment of sediments with some trace elements, the transformation of communities of benthic animals and microorganisms, etc. In addition, cold seeps are a source of methane (the strongest greenhouse gas), the emission of which into the atmosphere can lead to positive feedback on climate warming. The study of modern cold seeps is the key to understanding their role in sedimentary processes and climate change in past geological periods.

Multidisciplinary studies of cold seep marine sediments based on a variety of laboratory methods and covering various research aspects regarding the impact of fluid seepage are welcome.

Dr. Alexey Ruban
Dr. Elena Gershelis
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Quaternary is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cold seep
  • marine sediments
  • anaerobic oxidation of methane
  • sulfate reduction
  • carbonates
  • redox-sensitive elements
  • geochemistry
  • mineralogy

Published Papers (1 paper)

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Research

18 pages, 5593 KiB  
Article
Rare Earth Elements in Sediments from the Laptev Sea Shelf: Insight into Sources and Distribution Factors
by Alexey Ruban, Oleg Dudarev, Maxim Rudmin and Igor Semiletov
Quaternary 2024, 7(1), 12; https://doi.org/10.3390/quat7010012 - 28 Feb 2024
Viewed by 910
Abstract
The study of rare earth elements (REEs) in marine sediments is a powerful geochemical tool for determining depositional processes and sediment provenance, as well as for understanding paleoenvironmental changes. In this context, we present REE, some major and trace elements, grain size, and [...] Read more.
The study of rare earth elements (REEs) in marine sediments is a powerful geochemical tool for determining depositional processes and sediment provenance, as well as for understanding paleoenvironmental changes. In this context, we present REE, some major and trace elements, grain size, and mineralogy data on surface and core sediments, which were collected in different areas of the eastern Laptev Sea Shelf (LSS; Arctic Ocean). The primary objective of this paper was to assess the principal controlling factors influencing REE concentration and their vertical to lateral distribution. The total REE content (ΣREE) ranged from 139 ppm to 239 ppm within the studied sediment samples, predominantly consisting of silt. The normalized REE distribution patterns, based on North American Shale Composite (NASC) standard, exhibited an enrichment in light REE (LREE) when compared to heavy REE (HREE), which is similar to that in Lena River suspended particulate matter. The primary sources of REEs in the eastern LSS were both the suspended particulate matter from the Lena River and sediments originating from the coastal ice complex. The spatial distribution of REEs was primarily contingent upon the distance from sediment sources and prevailing hydrological conditions and was generally characterized by a decrease in REE concentration seaward. There was a moderate positive correlation between ΣREE and mean grain size in the studied surface sediment. However, this relationship was specific only for surface samples and was not found in the sediment cores, indicating that sediment grain size does not play a significant role in the REE vertical distribution. The strong positive correlation between ΣREE and Al, K, Ti, V, Cr, Zr, Hf, and Th suggests that REEs are hosted by not only heavy but also clay minerals. The vertical fluctuations of LREE/HREE, Eu/Eu*, (La/Lu)N can point at variable dominance of one or another REE source for during sediment accumulation. Full article
(This article belongs to the Special Issue Early Diagenetic Processes in Marine Cold Seeps)
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