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Minerals
Special Issues
Sedimentology and Geochemistry of Organic Matter
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Sedimentology and Geochemistry of Organic Matter

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".

Deadline for manuscript submissions: closed (12 November 2021) | Viewed by 7183

Special Issue Editors

Dr. Armelle Riboulleau

E-Mail Website
Guest Editor
Laboratoire d'Océanologie et de Géosciences, UMR 8187, Université de Lille, CNRS, Université du Littoral Côte d'Opale, 59655 Villeneuve d'Ascq, France
Interests: sedimentology and geochemistry of organic matter; sedimentary organic matter preservation pathways; natural sulfurization; biomarkers as paleoenvironmental markers; biomarkers of Paleozoic plants
Prof. Dr. Suryendu Dutta

E-Mail Website
Guest Editor
Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
Interests: terpenoids; molecular taphonomy, protein diagenesis, evolution of lignin

Special Issue Information

Dear Colleagues,

Though only representing less than a percent of the Earths’ crust geochemical balance, organic matter is widespread at the surface of the Earth, either as a living biomass or as a residue of bio- and/or geochemical transformation of the biomass. Organic matter is highly reactive, and its presence in rocks and sediments has important direct and indirect consequences on the geochemical behaviour of mineral elements, either in natural environments or in association to human activities. Fossil organic matter also remains one of the main sources of energy for human activities, and is therefore still actively studied in order to improve the efficiency of energy industry. Sedimentary organic matter also is a marvellous recorder of the evolution of life. Analytical improvement enabling the analysis of increasingly smaller quantities or of increasingly complex material allows for progress in each of the cited domains and more. We invite you to contribute to this Special Issue of Minerals with articles testifying to the important role of sedimentary organic matter for the mineral world. Contributions can either be reviews or original research studies illustrating specific aspects of organic matter sedimentology or geochemistry, organic matter–mineral interactions, and analytical progress, in particular in the field of applied geology but also the exceptional preservation of organic matter in lägerstatten.

Dr. Armelle Riboulleau
Prof. Dr. Suryendu Dutta
Guest Editors

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. Minerals is an international peer-reviewed open access monthly 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 2400 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

  • Algae
  • Bacteria
  • Biomarkers
  • Chromatography
  • Clay-organic matter interaction
  • Fossil
  • Higher plant
  • Kerogen
  • Macerals
  • Organic geochemistry
  • Organic matter
  • Organic petrology
  • Organic pollutants
  • Paleoenvironment
  • Petroleum
  • Palynofacies
  • Preservation
  • Sedimentology
  • Spectroscopy.

Published Papers (2 papers)

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Research

21 pages, 4582 KiB  
Article
Geochemical Characterization of the Eocene Coal-Bearing Source Rocks, Xihu Sag, East China Sea Shelf Basin, China: Implications for Origin and Depositional Environment of Organic Matter and Hydrocarbon Potential
by Xiong Cheng, Dujie Hou, Xinhuai Zhou, Jinshui Liu, Hui Diao and Lin Wei
Minerals 2021, 11(8), 909; https://doi.org/10.3390/min11080909 - 23 Aug 2021
Cited by 3 | Viewed by 2612
Abstract
Eocene coal-bearing source rocks of the Pinghu Formation from the W-3 well in the western margin of the Xihu Sag, East China Sea Shelf Basin were analyzed using Rock-Eval pyrolysis and gas chromatography–mass spectrometry to investigate the samples’ source of organic matter, depositional [...] Read more.
Eocene coal-bearing source rocks of the Pinghu Formation from the W-3 well in the western margin of the Xihu Sag, East China Sea Shelf Basin were analyzed using Rock-Eval pyrolysis and gas chromatography–mass spectrometry to investigate the samples’ source of organic matter, depositional environment, thermal maturity, and hydrocarbon generative potential. The distribution patterns of n-alkanes, isoprenoids and steranes, high Pr/Ph ratios, abundant diterpanes, and the presence of non-hopanoid triterpanes indicate predominant source input from higher land plants. The contribution of aquatic organic matter was occasionally slightly elevated probably due to a raised water table. High hopane/sterane ratios and the occurrence of bicyclic sesquiterpanes and A-ring degraded triterpanes suggest microbial activity and the input of microbial organisms. Overwhelming predominance of gymnosperm-derived diterpanes over angiosperm-derived triterpanes suggest a domination of gymnosperms over angiosperms in local palaeovegetation during the period of deposition. The high Pr/Ph ratios, the plot of Pr/n-C17 versus Ph/n-C18, the almost complete absence of gammacerane, and the distribution pattern of hopanes suggest that the samples were deposited in a relatively oxic environment. Generally, fluctuation of redox potential is coupled with source input, i.e., less oxic conditions were associated with more aquatic organic matter, suggesting an occasionally raised water table. Comprehensive maturity evaluation based on Ro, Tmax, and biomarker parameters shows that the samples constitute a natural maturation profile ranging from marginally mature to a near peak oil window. Hydrogen index and atomic H/C and O/C ratios of kerogens suggest that the samples mainly contain type II/III organic matter and could generate mixed oil and gas. Full article
(This article belongs to the Special Issue Sedimentology and Geochemistry of Organic Matter)
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18 pages, 4524 KiB  
Article
Source Rock Evaluation and Hydrocarbon Generation Model of a Permian Alkaline Lakes—A Case Study of the Fengcheng Formation in the Mahu Sag, Junggar Basin
by Yong Tang, Wenjun He, Yubin Bai, Xiang Zhang, Jingzhou Zhao, Sen Yang, Heyuan Wu, Yang Zou and Weitao Wu
Minerals 2021, 11(6), 644; https://doi.org/10.3390/min11060644 - 17 Jun 2021
Cited by 17 | Viewed by 3648
Abstract
The alkaline lake source rocks of the Fengcheng Formation are developed in the Mahu Sag of the Junggar Basin. Different from traditional continental fresh water and saltwater lake source rocks, alkaline lake source rocks lack targeted evaluation criteria, and it is unknown whether [...] Read more.
The alkaline lake source rocks of the Fengcheng Formation are developed in the Mahu Sag of the Junggar Basin. Different from traditional continental fresh water and saltwater lake source rocks, alkaline lake source rocks lack targeted evaluation criteria, and it is unknown whether their hydrocarbon generation models are consistent with traditional models. Therefore, in the present study, evaluation standards and hydrocarbon generation models of alkaline lake source rocks are discussed based on geological and organic geochemical data and a systematic summary of the geochemical characteristics of the Fengcheng Formation source rocks. The Fengcheng Formation source rocks are mainly diamictite with mixed argillaceous rock and dolomite; most total organic carbon (TOC) values range from 0.2–1.4%; and the kerogen is primarily oil-prone type II, reaching low- to high-maturity stages. Based on the types of organic matter in source rocks and the relationships between organic matter abundance parameters, the evaluation standard of alkaline lake source rocks is proposed. The Fengcheng Formation is mainly composed of good to excellent source rocks (55.5%) with high hydrocarbon generation potential. The single-peak hydrocarbon generation model of the Fengcheng Formation is similar to that of traditional freshwater or saltwater lakes, with a high hydrocarbon generation rate, two to five times that of the traditional model; its main particularity is in the formation of naphthenic crude oil from the kerogen of bacteria and algae. A new understanding of the hydrocarbon generation potential and model of alkaline lake source rocks in the Fengcheng Formation can provide support for tight oil and shale oil exploration in the Mahu Sag. Full article
(This article belongs to the Special Issue Sedimentology and Geochemistry of Organic Matter)
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