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Minerals
Special Issues
Geochemistry and Geochronology of Organic-rich Sediments and Hydrocarbons
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Geochemistry and Geochronology of Organic-rich Sediments and Hydrocarbons

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: closed (31 May 2020) | Viewed by 8379

Special Issue Editor

Prof. Dr. Svetlana Tessalina

E-Mail Website
Guest Editor
John de Laeter Centre, Curtin University, Perth, WA 6845, Australia
Interests: highly siderophile elements; Re-Os systematics; organic-rich sediments; geochronology; hydrocarbons; ore deposits

Special Issue Information

Dear Colleagues,

The geochemistry of organic-rich sediments (e.g., black shales) may provide important information about temporal changes in ocean chemistry, including past climatic, evolutionary, and geodynamic events in the Earth’s history. The whole rock major and trace element geochemistry of shales has been used to determine provenance and redox depositional conditions during sedimentation. Various redox-sensitive and bio-essential trace metals can become enriched in black shales as a function of the nature of the environment in which they were deposited. Of particular interest are shales with high metal enrichment, as they may represent an important geochemical flux. In addition to archiving paleo-ocean and climatic conditions, black shales offer important economic targets for hydrocarbon and mineral exploration. Re and Os are both hydrophile and siderophile elements that can become enriched in organic matter. The 187Re-187Os geochronometer has proven to be useful to determine the depositional ages of organic-rich clastic sedimentary rocks, such as black shales, as well as provide timing constraints for key petroleum events, such as crude oil generation, thermochemical sulphate reduction, and thermal cracking. The Os isotopic ratios may also serve as source traces of the oil. As such, Re-Os studies on hydrocarbons and black shales have potentially a wide application in timescale calibration studies and basin analysis. In this volume, we invite contributions focused on studies of geochemistry and geochronology of hydrocarbons and organic-rich sediments.

Prof. Dr. Svetlana Tessalina
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. 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

  • Re-Os systematics
  • black shales
  • organic-rich sediments
  • geochronology
  • hydrocarbons
  • trace elements

Published Papers (3 papers)

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Research

19 pages, 8966 KiB  
Article
Diverse Scale Data for Shale Gas Formation Description—Why Is Digital Shale Rock Model Construction Difficult? The Polish Silurian and Ordovician Rocks Case Study
by Paulina I. Krakowska-Madejska and Jadwiga A. Jarzyna
Minerals 2020, 10(2), 108; https://doi.org/10.3390/min10020108 - 27 Jan 2020
Cited by 1 | Viewed by 2194
Abstract
The aim of the study was to show that the petrophysical parameters, characterizing the shale gas formation, obtained from the various scale well logging and laboratory methods, correlated among themselves. Relationships determined on the basis of mesoscale (logs) and microscale outcomes (laboratory experiments [...] Read more.
The aim of the study was to show that the petrophysical parameters, characterizing the shale gas formation, obtained from the various scale well logging and laboratory methods, correlated among themselves. Relationships determined on the basis of mesoscale (logs) and microscale outcomes (laboratory experiments on plugs or crumbs) were also recognizable in nanoscale in the computed tomography results. Selected logs (spectral gamma ray, resistivity, density, neutron, geochemical and acoustic logs) and laboratory methods turned out to be effective in rock typing and description of petrophysical parameters. Nanoscale results processing and interpretation was supported by the sophisticated special software poROSE (version 3.18, AGH University of Science and Technology, Kraków, Poland) to determine special parameters, which correlated with the standard laboratory outcomes. Results of the mercury injection porosimetry, together with adsorption/desorption of nitrogen at 77 K and pressure decay permeability, were used as the basal parameters for building a digital model of shale rock and a detailed description of the Silurian and Ordovician shale formation, treated as the hydrocarbon prospective unconventional reservoirs. Including the computed X-ray tomography results in the correlation analyses, gave the platform to extend the standard 2D approach in building the rock model to novel, 3D and more detailed presentations of rock characteristics. Full article
(This article belongs to the Special Issue Geochemistry and Geochronology of Organic-rich Sediments and Hydrocarbons)
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21 pages, 6193 KiB  
Article
New Data and Evidence on the Mineralogy and Geochemistry of Wulantuga High-Ge Coal Deposit of Shengli Coalfield, Inner Mongolia, China
by Chen Yao, Xinguo Zhuang, Xavier Querol, Jing Li, Baoqing Li, Natalia Moreno and Feng Zhang
Minerals 2020, 10(1), 17; https://doi.org/10.3390/min10010017 - 24 Dec 2019
Viewed by 2137
Abstract
The mode of occurrence and origin of highly-enriched trace elements, especially Ge, in Wulantuga high-Ge coal deposit have been widely reported. In this study, coal samples and several coalified trunks embedded within the roof strata are collected, which provides a good opportunity to [...] Read more.
The mode of occurrence and origin of highly-enriched trace elements, especially Ge, in Wulantuga high-Ge coal deposit have been widely reported. In this study, coal samples and several coalified trunks embedded within the roof strata are collected, which provides a good opportunity to further confirm if Ge is mainly associated with organic matter. Minerals in coal samples are mainly quartz, kaolinite, montmorillonite, pyrite, and gypsum, along with trace albite, barite, chlorite, and Fe-oxide, while those in coalified trunk samples include melanterite, pyrite, and gypsum, with traces of chlorite and magnesiocopiapite. Germanium, As, W, Sb, Hg, Be, and Cs are enriched in coal samples, and these elements are also enriched in the coalified trunks and roof glutenite. The elevated contents of Ge, As, W, Sb, and Hg were almost exclusively derived from the influx of hydrothermal fluids as evidenced by the presence of pyrite veins and chamosite as well as enhanced elemental associations of Ge-W and As-Sb-Hg in the studied lignite samples. The coalified trunks in the study area should be taken into consideration due to the high contents of hazardous elements that cause potential environmental impacts during mining waste disposal and land reclamation. Full article
(This article belongs to the Special Issue Geochemistry and Geochronology of Organic-rich Sediments and Hydrocarbons)
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13 pages, 9680 KiB  
Article
Geochemical Analysis for Determining Total Organic Carbon Content Based on ∆LogR Technique in the South Pars Field
by Omeid Rahmani, Mehdi Khoshnoodkia, Ali Kadkhodaie, Amin Beiranvand Pour and Haylay Tsegab
Minerals 2019, 9(12), 735; https://doi.org/10.3390/min9120735 - 28 Nov 2019
Cited by 11 | Viewed by 3580
Abstract
There is a recognized need for the determination of total organic carbon (TOC) as an essential factor in the evaluation of source rocks. In this study, the ∆LogR technique was coupled with logging curves of sonic, resistivity, spectral gamma-ray (SGR), and computed gamma-ray [...] Read more.
There is a recognized need for the determination of total organic carbon (TOC) as an essential factor in the evaluation of source rocks. In this study, the ∆LogR technique was coupled with logging curves of sonic, resistivity, spectral gamma-ray (SGR), and computed gamma-ray (CGR) to determine an accurate content of TOC in the Gadvan Formation. Multiple linear regression analysis was also applied to the ∆LogR technique. To this aim, 14 samples of the Gadvan Formation were taken from Wells B and C in the South Pars field and analyzed using Rock-Eval pyrolysis. Results from the ∆LogR technique and multiple linear regression analysis, well logs, and Rock-Eval were compared to calculate the accurate content of TOC in the Gadvan Formation. Geochemical data confirmed that the Gadvan Formation was a relatively poor source rock in the South Pars field, as average TOC and Tmax values of the samples were 0.79 and less than 430 °C, respectively. Also, the content of potassium (K < 0.1%) confirmed the origin of the source rock as a pure carbonate, whereas the low content of thorium (Th < 5 ppm) was indicative of the percentage of clays. There was a moderate content of uranium (U < 10 ppm), suggesting that the Gadvan Formation was not deposited in an excellent reducing environment to conserve the organic matter. Moreover, the results from the integration of the multiple linear regression model with SGR and CGR showed that the value of R2 was higher than the results obtained without SGR and CGR. Findings from this study could help the exploration and production team to determine the accurate content of TOC using the ∆LogR technique in association with logging curves. Full article
(This article belongs to the Special Issue Geochemistry and Geochronology of Organic-rich Sediments and Hydrocarbons)
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