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Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals
The "geochemical effect of lanthanides" is a new concept proposed by the authors during the past decade. This concept reflects lanthanide shrinkage in elemental geochemistry, and it is statistically quantifiable. However, the geological significance of the various parameters of the equatio...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7418026/ https://www.ncbi.nlm.nih.gov/pubmed/32778696 http://dx.doi.org/10.1038/s41598-020-70477-1 |
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author | Yang, Jianye Qin, Shenjun Li, Jing Xu, Fei |
author_facet | Yang, Jianye Qin, Shenjun Li, Jing Xu, Fei |
author_sort | Yang, Jianye |
collection | PubMed |
description | The "geochemical effect of lanthanides" is a new concept proposed by the authors during the past decade. This concept reflects lanthanide shrinkage in elemental geochemistry, and it is statistically quantifiable. However, the geological significance of the various parameters of the equations obtained following quantization is not entirely clear. Cooperation and discussions from scholars in related research fields of rare earth elements in geology are required. In the present paper, from the perspective of coal geochemistry, the metamorphic coal seam of C2 series in Fengfeng Mine of Handan Coalfield in Hebei Province, China was used as an example. The geochemical significance of parameters in geochemical effect regression equation for lanthanides was evaluated, and two new formulas (regression equations) that characterized the geochemical behaviors of lanthanides were proposed. On this basis, concepts related to the geochemical effect of lanthanides, such as “individual parameters”, “parameters in common”, “two-sided parameters”, and the “deviation value” of lanthanides, were proposed. In this study, it was proved that the goodness of fit for all types of function regression equations for lanthanides and the radii of their trivalent ions, and the “deviation value” of lanthanides, were all “individual parameters” that could indicate the post-modified geological environment of C2 coal seam, such as the influence from magmatic-hydrothermal fluids. A covariant figure was constructed according to these individual parameters and other indexes, and the C2 coal seam in Handan was effectively divided into two different metamorphic series of A (C2 coal seam uninfluenced or slightly influenced by magmatic-hydrothermal fluids) and B (C2 coal seam strongly influenced and evidently changed by magmatic-hydrothermal fluids). Consequently, the scientific significance of all the parameters for lanthanides in an identifying series of metamorphic coals within the geochemical effect regression equation was further clarified. |
format | Online Article Text |
id | pubmed-7418026 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-74180262020-08-13 Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals Yang, Jianye Qin, Shenjun Li, Jing Xu, Fei Sci Rep Article The "geochemical effect of lanthanides" is a new concept proposed by the authors during the past decade. This concept reflects lanthanide shrinkage in elemental geochemistry, and it is statistically quantifiable. However, the geological significance of the various parameters of the equations obtained following quantization is not entirely clear. Cooperation and discussions from scholars in related research fields of rare earth elements in geology are required. In the present paper, from the perspective of coal geochemistry, the metamorphic coal seam of C2 series in Fengfeng Mine of Handan Coalfield in Hebei Province, China was used as an example. The geochemical significance of parameters in geochemical effect regression equation for lanthanides was evaluated, and two new formulas (regression equations) that characterized the geochemical behaviors of lanthanides were proposed. On this basis, concepts related to the geochemical effect of lanthanides, such as “individual parameters”, “parameters in common”, “two-sided parameters”, and the “deviation value” of lanthanides, were proposed. In this study, it was proved that the goodness of fit for all types of function regression equations for lanthanides and the radii of their trivalent ions, and the “deviation value” of lanthanides, were all “individual parameters” that could indicate the post-modified geological environment of C2 coal seam, such as the influence from magmatic-hydrothermal fluids. A covariant figure was constructed according to these individual parameters and other indexes, and the C2 coal seam in Handan was effectively divided into two different metamorphic series of A (C2 coal seam uninfluenced or slightly influenced by magmatic-hydrothermal fluids) and B (C2 coal seam strongly influenced and evidently changed by magmatic-hydrothermal fluids). Consequently, the scientific significance of all the parameters for lanthanides in an identifying series of metamorphic coals within the geochemical effect regression equation was further clarified. Nature Publishing Group UK 2020-08-10 /pmc/articles/PMC7418026/ /pubmed/32778696 http://dx.doi.org/10.1038/s41598-020-70477-1 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Yang, Jianye Qin, Shenjun Li, Jing Xu, Fei Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title | Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title_full | Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title_fullStr | Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title_full_unstemmed | Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title_short | Parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
title_sort | parameters of geochemical effect equation for lanthanides and their geochemical significance for a series of metamorphic coals |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7418026/ https://www.ncbi.nlm.nih.gov/pubmed/32778696 http://dx.doi.org/10.1038/s41598-020-70477-1 |
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