Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams
Basalt discriminant diagrams have been used to identify the tectonic setting of basaltic magmatism since the 1970s and have played an important role in reconstructing paleotectonic environments. However, the significant increase in the availability of geochemical data has led to a reassessment of th...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-07-01
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| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17538947.2017.1365959 |
| _version_ | 1797678567048347648 |
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| author | X. L. Liu Q. Zhang W. C. Li F. C. Yang Y. Zhao Z. Li S. T. Jiao J. R. Wang N. Zhang S. S. Wang W. F. Chen Z. J. Pan J. Yang X. L. Du |
| author_facet | X. L. Liu Q. Zhang W. C. Li F. C. Yang Y. Zhao Z. Li S. T. Jiao J. R. Wang N. Zhang S. S. Wang W. F. Chen Z. J. Pan J. Yang X. L. Du |
| author_sort | X. L. Liu |
| collection | DOAJ |
| description | Basalt discriminant diagrams have been used to identify the tectonic setting of basaltic magmatism since the 1970s and have played an important role in reconstructing paleotectonic environments. However, the significant increase in the availability of geochemical data has led to a reassessment of these diagrams, suggesting that some of the tectonic settings indicated by these diagrams are not accurate. Here, we use a database of global ocean island basalt (OIB), mid-ocean ridge basalt (MORB), and island arc basalt (IAB) geochemistry to propose a series of new tectonic discriminant diagrams based on the ratios of large-ion lithophile elements (LILEs) to high field strength elements (HFSEs). These new diagrams indicate that the LILE can be used to differentiate OIB, MORB, and IAB samples, meaning that LILE/HFSE ratios can discriminate between these basalts that form in different tectonic settings. Our new diagrams can correctly assign samples to OIB, MORB, and IAB categories more than 85% of the time, with the discrimination between OIB and MORB having an accuracy of slightly less than 85%. |
| first_indexed | 2024-03-11T23:01:49Z |
| format | Article |
| id | doaj.art-93178d732e8844e8a8f22a64a9283460 |
| institution | Directory Open Access Journal |
| issn | 1753-8947 1753-8955 |
| language | English |
| last_indexed | 2024-03-11T23:01:49Z |
| publishDate | 2018-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj.art-93178d732e8844e8a8f22a64a92834602023-09-21T14:38:06ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552018-07-0111775276010.1080/17538947.2017.13659591365959Applicability of large-ion lithophile and high field strength element basalt discrimination diagramsX. L. Liu0Q. Zhang1W. C. Li2F. C. Yang3Y. Zhao4Z. Li5S. T. Jiao6J. R. Wang7N. Zhang8S. S. Wang9W. F. Chen10Z. J. Pan11J. Yang12X. L. Du13Kunming University of Science and TechnologyChinese Academy of SciencesChengdu Geological Survey Center of China Geological SurveyChinese Academy of SciencesChinese Academy of SciencesKunming University of Science and TechnologyChinese Academy of SciencesSchool of Earth Science, Lanzhou UniversityKunming University of Science and TechnologyKunming University of Science and TechnologySchool of Earth Science, Lanzhou UniversitySchool of Earth Science, Lanzhou UniversitySchool of Earth Science, Lanzhou UniversitySchool of Earth Science, Lanzhou UniversityBasalt discriminant diagrams have been used to identify the tectonic setting of basaltic magmatism since the 1970s and have played an important role in reconstructing paleotectonic environments. However, the significant increase in the availability of geochemical data has led to a reassessment of these diagrams, suggesting that some of the tectonic settings indicated by these diagrams are not accurate. Here, we use a database of global ocean island basalt (OIB), mid-ocean ridge basalt (MORB), and island arc basalt (IAB) geochemistry to propose a series of new tectonic discriminant diagrams based on the ratios of large-ion lithophile elements (LILEs) to high field strength elements (HFSEs). These new diagrams indicate that the LILE can be used to differentiate OIB, MORB, and IAB samples, meaning that LILE/HFSE ratios can discriminate between these basalts that form in different tectonic settings. Our new diagrams can correctly assign samples to OIB, MORB, and IAB categories more than 85% of the time, with the discrimination between OIB and MORB having an accuracy of slightly less than 85%.http://dx.doi.org/10.1080/17538947.2017.1365959basaltlilehfsediscrimination diagramgeochemistry |
| spellingShingle | X. L. Liu Q. Zhang W. C. Li F. C. Yang Y. Zhao Z. Li S. T. Jiao J. R. Wang N. Zhang S. S. Wang W. F. Chen Z. J. Pan J. Yang X. L. Du Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams International Journal of Digital Earth basalt lile hfse discrimination diagram geochemistry |
| title | Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams |
| title_full | Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams |
| title_fullStr | Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams |
| title_full_unstemmed | Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams |
| title_short | Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams |
| title_sort | applicability of large ion lithophile and high field strength element basalt discrimination diagrams |
| topic | basalt lile hfse discrimination diagram geochemistry |
| url | http://dx.doi.org/10.1080/17538947.2017.1365959 |
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